바퀴

[나경실]

 

Cockroach

From Wikipedia, the free encyclopedia

Jump to navigationJump to search

This article is about the insect. For other uses, see Cockroach (disambiguation).

Cockroach Temporal range: 145–0 Ma PreЄ Є O S D C P T J K Pg N Cretaceous–recent
Common household cockroaches A) German cockroach B) American cockroach C) Australian cockroach D&E) Oriental cockroach (♀ & ♂)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Superorder:	Dictyoptera
Order:	Blattodea
Families
Blaberidae Blattidae Corydiidae Cryptocercidae Ectobiidae Lamproblattidae Nocticolidae Tryonicidae

Cockroaches are insects of the order Blattodea, which also includes termites. About 30 cockroach species out of 4,600 are associated with human habitats. About four species are well known as pests.

The cockroaches are an ancient group, dating back at least as far as the Carboniferous period, some 320 million years ago. Those early ancestors however lacked the internal ovipositors of modern roaches. Cockroaches are somewhat generalized insects without special adaptations like the sucking mouthparts of aphids and other true bugs; they have chewing mouthparts and are likely among the most primitive of living neopteran insects. They are common and hardy insects, and can tolerate a wide range of environments from Arctic cold to tropical heat. Tropical cockroaches are often much bigger than temperate species, and, contrary to popular belief, extinct cockroach relatives and 'roachoids' such as the Carboniferous Archimylacris and the PermianApthoroblattina were not as large as the biggest modern species.

Some species, such as the gregarious German cockroach, have an elaborate social structure involving common shelter, social dependence, information transfer and kin recognition. Cockroaches have appeared in human culture since classical antiquity. They are popularly depicted as dirty pests, though the great majority of species are inoffensive and live in a wide range of habitats around the world.

Contents

  [hide] 

• 1Taxonomy and evolution
• 2Description
• 3Distribution and habitat
• 4Behavior
  • 4.1Collective decision-making
  • 4.2Social behavior
  • 4.3Sounds
• 5Biology
  • 5.1Digestive tract
  • 5.2Tracheae and breathing
  • 5.3Reproduction
  • 5.4Hardiness
• 6Relationship with humans
  • 6.1In research and education
  • 6.2As pests
    • 6.2.1Control
  • 6.3As food
  • 6.4In traditional and homeopathic medicine
  • 6.5Conservation
  • 6.6In culture
• 7References
• 8External links

Taxonomy and evolution

A 40- to 50-million-year-old cockroach in Baltic amber (Eocene)

Cockroaches are members of the order Blattodea, which includes the termites, a group of insects once thought to be separate from cockroaches. Currently, 4,600 species and over 460 genera are described worldwide.^[1][2]The name "cockroach" comes from the Spanish word for cockroach, cucaracha, transformed by 1620s English folk etymology into "cock" and "roach".^[3] The scientific name derives from the Latin blatta, "an insect that shuns the light", which in classical Latin was applied not only to cockroaches, but also to mantids.^[4][5]

Historically, the name Blattaria was used largely interchangeably with the name Blattodea, but whilst the former name was used to refer to 'true' cockroaches exclusively, the latter also includes the termites. The current catalogue of world cockroach species uses the name Blattodea for the group.^[1] Another name, Blattoptera, is also sometimes used.^[6] The earliest cockroach-like fossils ("blattopterans" or "roachids") are from the Carboniferous period 320 million years ago, as are fossil roachoid nymphs.^[7][8][9]

Since the 19th century, scientists believed that cockroaches were an ancient group of insects that had a Devonian origin, according to one hypothesis.^[10] Fossil roachoids that lived during that time differ from modern cockroaches in having long external ovipositorsand are the ancestors of mantises, as well as modern blattodeans. As the body, hind wings and mouthparts are not preserved in fossils frequently, the relationship of these roachoids and modern cockroaches remains disputed. The first fossils of modern cockroaches with internal ovipositors appeared in the early Cretaceous. A recent phylogenetic analysis suggests that cockroaches originated at least in the Jurassic.^[10]

The evolutionary relationships of the Blattodea (cockroaches and termites) shown in the cladogram are based on Eggleton, Beccaloni & Inward (2007).^[11] The cockroach families Lamproblattidae and Tryonicidae are not shown but are placed within the superfamily Blattoidea. The cockroach families Corydiidae and Ectobiidae were previously known as the Polyphagidae and Blattellidae.^[12]

Dictyoptera

Blattodea

Blattoidea

Termitoidea (Termites)

	Termitidae
	Rhinotermitidae

Kalotermitidae

	Termopsidae
	Hodotermitidae

Mastotermitidae

Cryptocercoidae

Cryptocercidae (brown-hooded cockroaches)

Blattidae (Oriental, American and other cockroaches)

Blaberoidea

	Blaberidae (Giant cockroaches)
	Ectobiidae (part)

Ectobiidae (part)

Corydioidea

	Corydiidae (Sand cockroaches, etc)
	Nocticolidae (Cave cockroaches, etc)

Mantodea (Mantises)

Termites were previously regarded as a separate order Isoptera to cockroaches. However, recent genetic evidence strongly suggests that they evolved directly from 'true' cockroaches, and many authors now place them as an "epifamily" of Blattodea.^[11] This evidence supported a hypothesis suggested in 1934 that termites are closely related to the wood-eating cockroaches (genus Cryptocercus). This hypothesis was originally based on similarity of the symbiotic gut flagellates in termites regarded as living fossilsand wood-eating cockroaches.^[13] Additional evidence emerged when F. A. McKittrick (1965) noted similar morphological characteristics between some termites and cockroach nymphs.^[14] The similarities among these cockroaches and termites have led some scientists to reclassify termites as a single family, the Termitidae, within the order Blattodea.^[11][15] Other scientists have taken a more conservative approach, proposing to retain the termites as the Termitoidea, an epifamily within the order. Such measure preserves the classification of termites at family level and below.^[16]

Description

Domino cockroach Therea petiveriana, normally found in India

Most species of cockroach are about the size of a thumbnail, but several species are bigger. The world's heaviest cockroach is the Australian giant burrowing cockroach Macropanesthia rhinoceros, which can reach 9 cm (3.5 in) in length and weigh more than 30 g (1.1 oz).^[17]Comparable in size is the Central American giant cockroach Blaberus giganteus, which grows to a similar length.^[18] The longest cockroach species is Megaloblatta longipennis, which can reach 97 mm (3.8 in) in length and 45 mm (1.8 in) across.^[19] A Central and South American species, Megaloblatta blaberoides, has the largest wingspan of up to 185 mm (7.3 in).^[20]

Head of Periplaneta americana

Cockroaches are generalized insects, with few special adaptations, and may be among the most primitiveliving neopteran insects. They have a relatively small head and a broad, flattened body, and most species are reddish-brown to dark brown. They have large compound eyes, two ocelli, and long, flexible antennae. The mouthparts are on the underside of the head and include generalized chewing mandibles, salivary glands and various touch and taste receptors.^[21]

The body is divided into a thorax of three segments and a ten-segmented abdomen. The external surface has a tough exoskeleton which contains calcium carbonate and protects the inner organs and provides attachment to muscles. It is coated with wax to repel water. The wings are attached to the second and third thoracic segments. The tegmina, or first pair of wings, are tough and protective, lying as a shield on top of the membranous hind wings, which are used in flight. All four wings have branching longitudinal veins, and multiple cross-veins.^[22]

The three pairs of legs are sturdy, with large coxae and five claws each.^[22] They are attached to each of the three thoracic segments. The front legs are the shortest and the hind legs the longest, providing the main propulsive power when the insect runs.^[21] The spines on the legs were earlier considered to be sensory, but observations of the insect's gait on sand and wire meshes have demonstrated that they help in locomotion on difficult terrain. The structures have been used as inspiration for robotic legs.^[23][24]

The abdomen has ten segments, each with a pair of spiracles for respiration. Segment ten bears a pair of cerci, a pair of anal styles, the anus and the external genitalia. Males have an aedeagus through which they secrete sperm during copulation and females have spermathecae for storing sperm and an ovipositor through which the ootheca is laid.^[21]

Distribution and habitat

Cockroaches are abundant throughout the world and live in a wide range of environments, especially in the tropics and subtropics.^[25] Cockroaches can withstand extremely cold temperatures, allowing them to live in the Arctic. Some species are capable of surviving temperatures of −188 °F (−122 °C) by manufacturing an antifreeze made out of glycerol.^[26] In North America, 50 species separated into five families are found throughout the continent.^[25] 450 species are found in Australia.^[27] Only about four widespread species are commonly regarded as pests.^[28][29]

Cockroaches occupy a wide range of habitats. Many live in leaf litter, among the stems of matted vegetation, in rotting wood, in holes in stumps, in cavities under bark, under log piles and among debris. Some live in arid regions and have developed mechanisms to survive without access to water sources. Others are aquatic, living near the surface of water bodies, including bromeliad phytotelmata, and diving to forage for food. Most of these respire by piercing the water surface with the tip of the abdomen which acts as a snorkel, but some carry a bubble of air under their thoracic shield when they submerge. Others live in the forest canopy where they may be one of the main types of invertebrate present. Here they may hide during the day in crevices, among dead leaves, in bird and insect nests or among epiphytes, emerging at night to feed.^[30]

Behavior

A cockroach soon after ecdysis

Cockroaches are social insects; a large number of species are either gregarious or inclined to aggregate, and a slightly smaller number exhibit parental care.^[31] It used to be thought that cockroaches aggregated because they were reacting to environmental cues, but it is now believed that pheromones are involved in these behaviors. Some species secrete these in their feces with gut microbial symbionts being involved, while others use glands located on their mandibles. Pheromones produced by the cuticle may enable cockroaches to distinguish between different populations of cockroach by odor. The behaviors involved have only been studied in a few species, but German cockroaches leave fecal trails with an odor gradient.^[31] Other cockroaches follow such trails to discover sources of food and water, and where other cockroaches are hiding. Thus, cockroaches have emergent behavior, in which group or swarm behavior emerges from a simple set of individual interactions.^[32]

Daily rhythms may also be regulated by a complex set of hormonal controls of which only a small subset have been understood. In 2005, the role of one of these proteins, pigment dispersing factor (PDF), was isolated and found to be a key mediator in the circadian rhythms of the cockroach.^[33]

Pest species adapt readily to a variety of environments, but prefer warm conditions found within buildings. Many tropical species prefer even warmer environments. Cockroaches are mainly nocturnal^[34] and run away when exposed to light. An exception to this is the Asian cockroach, which flies mostly at night but is attracted to brightly-lit surfaces and pale colors.^[35]

Collective decision-making

Gregarious cockroaches display collective decision-making when choosing food sources. When a sufficient number of individuals (a "quorum") exploits a food source, this signals to newcomer cockroaches that they should stay there longer rather than leave for elsewhere.^[36] Other mathematical models have been developed to explain aggregation dynamics and conspecific recognition.^[37][38]

Cooperation and competition are balanced in cockroach group decision-making behavior.^[32]

Cockroaches appear to use just two pieces of information to decide where to go, namely how dark it is and how many other cockroaches there are. A study used specially-scented roach-sized robots that appear to the roaches as real to demonstrate that once there are enough insects in a place to form a critical mass, the roaches accepted the collective decision on where to hide, even if this was an unusually light place.^[39]

Social behavior

Gregarious German cockroaches show different behavior when reared in isolation from when reared in a group. In one study, isolated cockroaches were less likely to leave their shelters and explore, spent less time eating, interacted less with conspecifics when exposed to them, and took longer to recognize receptive females. Because these changes occurred in many contexts, the authors suggested them as constituting a behavioral syndrome. These effects might have been due either to reduced metabolic and developmental rates in isolated individuals or the fact that the isolated individuals hadn't had a training period to learn about what others were like via their antennae.^[40]

Individual American cockroaches appear to have consistently different "personalities" regarding how they seek shelter. In addition, group personality is not simply the sum of individual choices, but reflects conformity and collective decision-making.^[41][42]

The gregarious German and American cockroaches have elaborate social structure, chemical signalling, and "social herd" characteristics. Lihoreau and his fellow researchers stated:^[32]

“

The social biology of domiciliary cockroaches ... can be characterized by a common shelter, overlapping generations, non-closure of groups, equal reproductive potential of group members, an absence of task specialization, high levels of social dependence, central place foraging, social information transfer, kin recognition, and a meta-population structure.[32]

”

Sounds

Some species make a hissing noise while other cockroaches make a chirping noise. The Madagascar hissing cockroach produces its sound through the modified spiracleson the fourth abdominal segment. Several different hisses are produced, including disturbance sounds, produced by adults and larger nymphs, and aggressive, courtship and copulatory sounds produced by adult males.^[43] Henschoutedenia epilamproides has a stridulatory organ between its thorax and abdomen, but the purpose of the sound produced is unclear.^[44]

Several Australian species practice acoustic and vibration behavior as an aspect of courtship. They have been observed producing hisses and whistles from air forced through the spiracles. Furthermore, in the presence of a potential mate, some cockroaches tap the substrate in a rhythmic, repetitive manner. Acoustic signals may be of greater preval‎ence amongst perching species, particularly those that live on low vegetation in Australia's tropics.^[45]

Biology

Digestive tract

Cockroaches are generally omnivorous; the American cockroach (Periplaneta americana), for example, feeds on a great variety of foodstuffs including bread, fruit, leather, starch in book bindings, paper, glue, skin flakes, hair, dead insects and soiled clothing.^[46] Many species of cockroach harbor symbiotic protozoans and bacteria in their gut which are able to digest cellulose. In many species, these symbionts may be essential if the insect is to utilize cellulose; however, some species secrete cellulase in their saliva, and the wood-eating cockroach, Panesthia cribrata, is able to survive indefinitely on a diet of crystallized cellulose while being free of micro-organisms.^[47]

The similarity of these symbionts in the genus Cryptocercus to those in termites are such that these cockroaches have been suggested to be more closely related to termites than to other cockroaches,^[48] and current research strongly supports this hypothesis about their relationships.^[49] All species studied so far carry the obligate mutualistic endosymbiont bacterium Blattabacterium, with the exception of Nocticola australiensise, an Australian cave-dwelling species without eyes, pigment or wings, which recent genetic studies indicate is a very primitive cockroach.^[50][51] It had previously been thought that all five families of cockroach were descended from a common ancestor that was infected with B. cuenoti. It may be that N. australiensise subsequently lost its symbionts, or alternatively this hypothesis will need to be re-examined.^[51]

Tracheae and breathing

Like other insects, cockroaches breathe through a system of tubes called tracheae which are attached to openings called spiracles on all body segments. When the carbon dioxide level in the insect rises high enough, valves on the spiracles open and carbon dioxide diffuses out and oxygen diffuses in. The tracheal system branches repeatedly, the finest tracheoles bringing air directly to each cell, allowing gaseous exchange to take place.^[52]

While cockroaches do not have lungs as do vertebrates, and can continue to respire if their heads are removed, in some very large species, the body musculature may contract rhythmically to forcibly move air in and out of the spiracles; this may be considered a form of breathing.^[52]

Reproduction

Cockroaches use pheromones to attract mates, and the males practice courtship rituals, such as posturing and stridulation. Like many insects, cockroaches mate facing away from each other with their genitalia in contact, and copulation can be prolonged. A few species are known to be parthenogenetic, reproducing without the need for males.^[22]

Female cockroaches are sometimes seen carrying egg cases on the end of their abdomens; the German cockroach holds about 30 to 40 long, thin eggs in a case called an ootheca. She drops the capsule prior to hatching, though live births do occur in rare instances. The egg capsule may take more than five hours to lay and is initially bright white in color. The eggs are hatched from the combined pressure of the hatchlings gulping air. The hatchlings are initially bright white nymphs and continue inflating themselves with air, becoming harder and darker within about four hours. Their transient white stage while hatching and later while molting has led to claims of albinocockroaches.^[22] Development from eggs to adults takes three to four months. Cockroaches live up to a year, and the female may produce up to eight egg cases in a lifetime; in favorable conditions, she can produce 300 to 400 offspring. Other species of cockroaches, however, can produce far more eggs; in some cases a female needs to be impregnated only once to be able to lay eggs for the rest of her life.^[22]

The female usually attaches the egg case to a substrate, inserts it into a suitably protective crevice, or carries it about until just before the eggs hatch. Some species, however, are ovoviviparous, keeping the eggs inside their body, with or without an egg case, until they hatch. At least one genus, Diploptera, is fully viviparous.^[22]

Cockroaches have incomplete metamorphosis, meaning that the nymphs are generally similar to the adults, except for undeveloped wings and genitalia. Development is generally slow, and may take a few months to over a year. The adults are also long-lived, and have survived for as much as four years in the laboratory.^[22]

• 

  3 millimeter cockroach nymph

 
• 

  Female Periplaneta fuliginosa with ootheca

 
• 

  Empty ootheca

 
• 

  American cockroach oothecae

Hardiness

Cockroaches are among the hardiest insects. Some species are capable of remaining active for a month without food and are able to survive on limited resources, such as the glue from the back of postage stamps.^[53] Some can go without air for 45 minutes. Japanese cockroach (Periplaneta japonica) nymphs, which hibernate in cold winters, survived twelve hours at −5 °C to −8 °C in laboratory experiments.^[54]

Experiments on decapitated specimens of several species of cockroach found a variety of behavioral functionality remained, including shock avoidance and escape behavior, although many insects other than cockroaches are also able to survive decapitation, and popular claims of the longevity of headless cockroaches do not appear to be based on published research.^[55][56] The severed head is able to survive and wave its antennae for several hours, or longer when refrigerated and given nutrients.^[56]

It is popularly suggested that cockroaches will "inherit the earth" if humanity destroys itself in a nuclear war. Cockroaches do indeed have a much higher radiation resistance than vertebrates, with the lethal dose perhaps six to 15 times that for humans. However, they are not exceptionally radiation-resistant compared to other insects, such as the fruit fly.^[57]

The cockroach's ability to withstand radiation better than human beings can be explained through the cell cycle. Cells are most vulnerable to the effects of radiation when they are dividing. A cockroach's cells divide only once each time it molts, which is weekly at most in a juvenile roach. Since not all cockroaches would be molting at the same time, many would be unaffected by an acute burst of radiation, but lingering radioactive fallout would still be harmful.^[52]

Relationship with humans

Cockroaches in research: Periplaneta americana in an electrophysiology experiment

In research and education

Because of their ease of rearing and resilience, cockroaches have been used as insect models in the laboratory, particularly in the fields of neurobiology, reproductive physiology and social behavior.^[31] The cockroach is a convenient insect to study as it is large and simple to raise in a laboratory environment. This makes it suitable both for research and for school and undergraduate biology studies. It can be used in experiments on topics such as learning, sexual pheromones, spatial orientation, aggression, activity rhythms and the biological clock, and behavioral ecology.^[58] Research conducted in 2014 suggests that humans fear cockroaches the most, even more than mosquitoes, due to an evolutionary aversion.^[59]

As pests

The Blattodea include some thirty species of cockroaches associated with humans; these species are atypical of the thousands of species in the order.^[60] They feed on human and pet food and can leave an offensive odor.^[61] They can passively transport pathogenic microbes on their body surfaces, particularly in environments such as hospitals.^[62][63] Cockroaches are linked with allergic reactions in humans.^[64][65] One of the proteins that trigger allergic reactions is tropomyosin.^[66] These allergens are also linked with asthma.^[67] About 60% of asthma patients in Chicago are also sensitive to cockroach allergens. Studies similar to this have been done globally and all the results are similar. Cockroaches can live for a few days up to a month without food, so just because no cockroaches are visible in a home does not mean they are not there. Approximately 20-48% of homes with no visible sign of cockroaches have detectable cockroach allergens in dust.^[68]

Cockroaches can burrow into human ears, causing pain and hearing loss.^[69][70] They may be removed with forceps, possibly after first drowning with olive oil.^[71][72][73]

Control

Many remedies have been tried in the search for control of the major pest species of cockroaches, which are resilient and fast-breeding. Household chemicals like sodium bicarbonate (baking soda) have been suggested, without evidence for their effectiveness.^[74] Garden herbs including bay, catnip, mint, cucumber, and garlic have been proposed as repellents.^[75] Poisoned bait containing hydramethylnon or fipronil, and boric acid powder is effective on adults.^[76] Baits with egg killers are also quite effective at reducing the cockroach population. Alternatively, insecticides containing deltamethrin or pyrethrin are very effective.^[76] In Singapore and Malaysia, taxi drivers use pandan leaves to repel cockroaches in their vehicles.^[77]

Few parasites and predators are effective for biological control of cockroaches. Parasitoidal wasps such as Ampulex wasps sting nerve ganglia in the cockroach's thorax, temporarily paralyzing the victim, allowing the wasp to deliver a second sting into the cockroach's brain. The wasp clips the antennae with its mandibles and drinks some hemolymph before dragging the prey to a burrow, where an egg is laid on it. The wasp larva feeds on the subdued living cockroach.^[78]

Cockroaches can be trapped in a deep, smooth-walled jar baited with food inside, placed so that cockroaches can reach the opening, for example with a ramp of card or twigs on the outside. An inch or so of water or stale beer (by itself a cockroach attractant) in the jar can be used to drown any insects thus captured. The method works well with the American cockroach, but less so with the German cockroach.^[79]

As food

See also: Entomophagy and Cockroach farming

Although considered disgusting in Western culture, cockroaches are eaten in many places around the world.^[80][81] Whereas household pest cockroaches may carry bacteria and viruses, cockroaches bred under laboratory conditions can be used to prepare nutritious food.^[82] In Mexico and Thailand, the heads and legs are removed, and the remainder may be boiled, sautéed, grilled, dried or diced.^[80] In China, cockroaches have become popular as medicine and cockroach farming is rising with over 100 farms.^[83] The cockroaches are fried twice in a wok of hot oil, which makes them crispy with soft innards that are like cottage cheese.^[84][85] Fried cockroaches are ground and sold as pills for stomach, heart and liver diseases.^[86] A cockroach recipe from Formosa (Taiwan) specifies salting and frying cockroaches after removing the head and entrails.^[87]

In traditional and homeopathic medicine

In China, cockroaches are raised in large quantities for medicinal purposes.^[88]

Two species of cockroach were used in homeopathic medicine in the 19th century.^[89]

Conservation

See also: Depopulation of cockroaches in post-Soviet states

While a small minority of cockroaches are associated with human habitats and viewed as repugnant by many people, a few species are of conservation concern. The Lord Howe Island wood-feeding cockroach (Panesthia lata) is listed as endangered by the New South Wales Scientific Committee, but the cockroach may be extinct on Lord Howe Island itself. The introduction of rats, the spread of Rhodes grass (Chloris gayana) and fires are possible reasons for their scarcity.^[90] Two species are currently listed as endangered and critically endangered by the IUCN Red List, Delosia ornata and Nocticola gerlachi.^[91][92] Both cockroaches have a restricted distribution and are threatened by habitat loss and rising sea levels. Only 600 Delosia ornata adults and 300 nymphs are known to exist, and these are threatened by a hotel development. No action has been taken to save the two cockroach species, but protecting their natural habitats may prevent their extinction. In the former Soviet Union, cockroach populations have been declining at an alarming rate; this may be exaggerated, or the phenomenon may be temporary or cyclic.^[93] One species of roach, Simandoa conserfariam is considered extinct in the wild.

In culture

Main article: Cockroaches in popular culture

Madagascar hissing cockroacheskept as pets

Cockroaches were known and considered repellent but useful in medicines in Classical times. An insect named in Greek "σίλφη" (silphe) has been identified with the cockroach. It is mentioned by Aristotle, saying that it sheds its skin; it is described as foul-smelling in Aristophanes' play Peace; Euenus called it a pest of book collections, being "page-eating, destructive, black-bodied" in his Analect. Virgil named the cockroach "Lucifuga" ("one that avoids light"). Pliny the Elder recorded the use of "Blatta" in various medicines; he describes the insect as disgusting, and as seeking out dark corners to avoid the light.^[94][95] Dioscorides recorded the use of the "Silphe", ground up with oil, as a remedy for earache.^[95]

Lafcadio Hearn (1850–1904) asserted that "For tetanus cockroach tea is given. I do not know how many cockroaches go to make up the cup; but I find that faith in this remedy is strong among many of the American population of New Orleans. A poultice of boiled cockroaches is placed over the wound." He adds that cockroaches are eaten, fried with garlic, for indigestion.^[96]

Several cockroach species, such as Blaptica dubia, are raised as food for insectivorous pets.^[97] A few cockroach species are raised as pets, most commonly the giant Madagascar hissing cockroach, Gromphadorhina portentosa.^[98] Whilst the hissing cockroaches may be the most commonly kept species, there are many species that are kept by cockroach enthusiasts; there is even a specialist society: the Blattodea Culture Group (BCG), which was a thriving organisation for about 15 years although now appears to be dormant.^[99] The BCG provided a source of literature for people interested in rearing cockroaches which was otherwise limited to either scientific papers, or general insect books, or books covering a variety of exotic pets; in the absence of an inclusive book one member published Introduction to Rearing Cockroaches which still appears to be the only book dedicated to rearing cockroaches.^[100]

Cockroaches have been used for space tests. A cockroach given the name Nadezhda was sent into space by Russian scientists as part of a Foton-M mission, during which she mated, and later became the first terrestrial animal to produce offspring that had been conceived in space.^[101]

Because of their long association with humans, cockroaches are frequently referred to in popular culture. In Western culture, cockroaches are often depicted as dirty pests.^[102][103] In a 1750–1752 journal, Peter Osbeck noted that cockroaches were frequently seen and found their way to the bakeries, after the sailing ship Gothenburg ran aground and was destroyed by rocks.^[104]

Donald Harington's satirical novel The Cockroaches of Stay More (Harcourt, 1989) imagines a community of "roosterroaches" in a mythical Ozark town where the insects are named after their human counterparts. Madonna has famously quoted, "I am a survivor. I am like a cockroach, you just can't get rid of me."^[105] An urban legend maintains that cockroaches are immortal.^[106]

References

1. ^ Jump up to:^a b Beccaloni, G. W. (2014). "Cockroach Species File Online. Version 5.0".
2. Jump up^ "Blattodea (Cockroaches & Termites)". CSIRO Entomology. Retrieved 21 November2015.
3. Jump up^ Harper, Douglas. "Cockroach". Online Etymology Dictionary.
4. Jump up^ Gordh, G.; Headrick, D. H. (2009). A Dictionary of Entomology (2nd ed.). Wallingford: CABI. p. 200. ISBN 978-1-84593-542-9.
5. Jump up^ Lewis, Charlton T.; Short, Charles. "Blatta". Perseus Digital Library. Tufts University. Retrieved 26 October 2015.
6. Jump up^ Grimaldi, D. (1997). "A fossil mantis (Insecta, Mantodea) in Cretaceous amber of New Jersey: with comments on the early history of the Dictyoptera". American Museum Novitates. 3204: 1–11.
7. Jump up^ Garwood, R.; Sutton, M. (2010). "X-ray micro-tomography of Carboniferous stem-Dictyoptera: new insights into early insects". Biology Letters. 6 (5): 699–702. doi:10.1098/rsbl.2010.0199. PMC 2936155 . PMID 20392720.
8. Jump up^ Grimaldi, David; Engel, Michael S. (2005). Evolution of the Insects. Cambridge University Press. p. 1. ISBN 978-0-521-82149-0.
9. Jump up^ Garwood, R.; Ross, A.; Sotty, D.; Chabard, D.; Charbonnier, S.; Sutton, M.; Withers, P.J.; Butler, R.J. (2012). "Tomographic Reconstruction of Neopterous Carboniferous Insect Nymphs". PLoS ONE. 7 (9): e45779. doi:10.1371/journal.pone.0045779. PMC 3458060 . PMID 23049858.
10. ^ Jump up to:^a b Legendre, F.; Nel, A.; Svenson, G. J.; Robillard, T.; Pellens, R.; Grandcolas, P. (2015). "Phylogeny of Dictyoptera: Dating the Origin of Cockroaches, Praying Mantises and Termites with Molecular Data and Controlled Fossil Evidence". PLoS ONE. 10 (7): e0130127. doi:10.1371/journal.pone.0130127. PMC 4511787 . PMID 26200914.
11. ^ Jump up to:^a b c Inward, D.; Beccaloni, G.; Eggleton, P. (2007). "Death of an order: a comprehensive molecular phylogenetic study confirm‎s that termites are eusocial cockroaches". Biology Letters. 3 (3): 331–335. doi:10.1098/rsbl.2007.0102. PMC 2464702 . PMID 17412673.
12. Jump up^ Beccaloni, G.; Eggleton, P. (2013). Order Blattodea. In: Zhang; Z.-Q.; Survey of Taxonomic Richness, eds. "Animal Biodiversity: An Outline of Higher-level Classification" (PDF). Zootaxa. 3703 (1): 46–48. doi:10.11646/zootaxa.3703.1.10.
13. Jump up^ Cleveland, L.R.; Hall, S.K.; Sanders, E.P.; Collier, J. (1934). "The Wood-Feeding Roach Cryptocercus, Its Protozoa, and the Symbiosis between Protozoa and Roach". Memoirs of the American Academy of Arts and Sciences. 17 (2): 185–382. doi:10.1093/aesa/28.2.216.
14. Jump up^ McKittrick, F.A. (1965). "A contribution to the understanding of cockroach-termite affinities". Annals of the Entomological Society of America. 58 (1): 18–22. doi:10.1093/aesa/58.1.18. PMID 5834489.
15. Jump up^ Eggleton, Paul; Beccaloni, George; Inward, Daegan (2007). "Response to Lo et al". Biology Letters. 3 (5): 564–565. doi:10.1098/rsbl.2007.0367. PMC 2391203 .
16. Jump up^ Lo, Nathan; Engel, Michael S.; Cameron, Stephen; Nalepa, Christine A.; Tokuda, Gaku; Grimaldi, David; Kitade, Osamu; Krishna, Kumar; Klass, Klaus-Dieter; Maekawa, Kiyoto; Miura, Toru; Thompson, Graham J. (2007). "Comment. Save Isoptera: A comment on Inward et al". Biology Letters. 3 (5): 562–563. doi:10.1098/rsbl.2007.0264. PMC 2391185 . PMID 17698448.
17. Jump up^ "Pet facts: giant burrowing cockroaches". Australian Broadcasting Corporation. Retrieved 3 December 2005.
18. Jump up^ Huang, C.Y.; Sabree, Z.L.; Moran, N.A. (2012). "Genome Sequence of Blattabacteriumsp. Strain BGIGA, Endosymbiont of the Blaberus giganteus Cockroach". Journal of Bacteriology. 194 (16): 4450–4451. doi:10.1128/jb.00789-12. PMC 3416254 . PMID 22843586.
19. Jump up^ Guinness World Records. "Guinness World Records: World's Largest Cockroach".
20. Jump up^ "Natural History Museum: Cockroaches hit the shelves". Natural History Museum. May 2006. Archived from the original on 19 August 2006. Retrieved 23 November2015.
21. ^ Jump up to:^a b c "Diversity of Life: Cockroach anatomy". Biology4ISC. Retrieved 8 November2015.
22. ^ Jump up to:^{a b c d e f g} Hoell, H. V.; Doyen, J. T.; Purcell, A. H. (1998). Introduction to Insect Biology and Diversity (2nd ed.). Oxford University Press. pp. 362–364. ISBN 0-19-510033-6.
23. Jump up^ Ritzmann, Roy E.; Quinn, Roger D.; Fischer, Martin S. (2004). "Convergent evolution and locomotion through complex terrain by insects, vertebrates and robots" (PDF). Arthropod Structure & Development. 33 (3): 361–379. doi:10.1016/j.asd.2004.05.001.
24. Jump up^ Spagna, J.C.; Goldman, D.I.; Lin, P-C.; Koditschek, D.E.; Full, Robert J. (2007). "Distributed mechanical feedback control of rapid running on challenging terrain". Bioinspiration & Biomimetics. 2 (1): 9–18. doi:10.1088/1748-3182/2/1/002. PMID 17671322.
25. ^ Jump up to:^a b Meyer, J. "Blattodea". General Entomology. University of North Carolina. Retrieved 9 November 2015.
26. Jump up^ Mohs, K.; McGee, I. (2007). Animal planet: the most extreme bugs (1st ed.). John Wiley & Sons. p. 35. ISBN 978-0-7879-8663-6.
27. Jump up^ "Cockroaches: Order Blattodea". Australian Museum. January 13, 2012. Retrieved November 10, 2015.
28. Jump up^ Valles, S. M.; Koehler, P. G.; Brenner, R. J. (1999). "Comparative insecticide susceptibility and detoxification enzyme activities among pestiferous blattodea"(PDF). Comp Infibous Biochem Physiol C Pharmacol Toxicol Endocrinol. 124 (3): 227–232. doi:10.1016/S0742-8413(99)00076-6. PMID 10661713.
29. Jump up^ Schal, C; Hamilton, R. L. (1990). "Integrated suppression of synanthropic cockroaches" (PDF). Annu. Rev. Entomol. 35: 521–551. doi:10.1146/annurev.en.35.010190.002513. PMID 2405773.
30. Jump up^ Bell, William J.; Roth, Louis M.; Nalepa, Christine A. (2007). Cockroaches: Ecology, Behavior, and Natural History. JHU Press. pp. 55–58. ISBN 978-0-8018-8616-4.
31. ^ Jump up to:^a b c Costa, James T. (2006). The Other Insect Societies. Harvard University Press. p. 148. ISBN 978-0-674-02163-1.
32. ^ Jump up to:^a b c d Lihoreau, M.; Costa, J.T.; Rivault, C. (November 2012). "The social biology of domiciliary cockroaches: colony structure, kin recognition and collective decisions". Insectes Sociaux. 59 (4): 445–452. doi:10.1007/s00040-012-0234-x.
33. Jump up^ Hamasaka, Yasutaka; Mohrherr, C. J.; Predel, R.; Wegener, C. (22 December 2005). "Chronobiological analysis and mass spectrometric characterization of pigment-dispersing factor in the cockroach Leucophaea maderae". The Journal of Insect Science. 5 (43): 43. doi:10.1093/jis/5.1.43. PMC 1615250 . PMID 17119625.
34. Jump up^ Rust, M. K. (2007). "Cockroaches". University of California Integrated Pest Management Program. University of California. Retrieved 24 November 2015.
35. Jump up^ Richman, Dina L. (1 June 2014). "Asian cockroach". featured Creatures. University of Florida. Retrieved 4 November 2015.
36. Jump up^ Lihoreau, Mathieu; Deneubourg, Jean-Louis; Rivault, Colette (2010). "Collective foraging decision in a gregarious insect". Behavioral Ecology and Sociobiology. 64 (10): 1577–1587. doi:10.1007/s00265-010-0971-7.
37. Jump up^ Ame, Jean-Marc; Rivault, Colette; Deneubourg, Jean-Louis (Oct 2004). "Cockroach aggregation based on strain odour recognition". Animal Behaviour. 68 (4): 793–801. doi:10.1016/j.anbehav.2004.01.009.
38. Jump up^ Jeanson, Raphael; Rivault, Colette; Deneubourg, Jean-Louis; Blanco, Stephane; Fournier, Richard; Jost, Christian; Theraulaz, Guy (Jan 2005). "Self-organized aggregation in cockroaches". Animal Behaviour. 69 (1): 169–180. doi:10.1016/j.anbehav.2004.02.009.
39. Jump up^ Lemonick, Michael D. (15 November 2007). "Robotic Roaches Do the Trick". Time Magazine. Retrieved 24 November 2015.
40. Jump up^ Lihoreau, Mathieu; Brepson, Loïc; Rivault, Colette (2009). "The weight of the clan: Even in insects, social isolation can induce a behavioural syndrome". Behavioural Processes. 82: 81–84. doi:10.1016/j.beproc.2009.03.008. PMID 19615616.
41. Jump up^ Planas-Sitjà, Isaac; Deneubourg, Jean-Louis; Gibon, Céline; Sempo, Grégory (2015). "Group personality during collective decision-making: a multi-level approach" (PDF). Proc. R. Soc. B. 282: 20142515. doi:10.1098/rspb.2014.2515.
42. Jump up^ Morell, Virginia (3 February 2015). "Even cockroaches have personalities". Science. doi:10.1126/science.aaa7797. Retrieved 19 February 2015.
43. Jump up^ Nelson, Margaret C. (1979). "Sound production in the cockroach, Gromphadorhina portentosa: The sound-producing apparatus". Journal of Comparative Physiology. 132(1): 27–38. doi:10.1007/BF00617729.
44. Jump up^ Guthrie, D.M. (1966). "Sound production and reception in a cockroach". Journal of Experimental Biology. 45: 321–328.
45. Jump up^ Rentz, David (2014). A Guide to the Cockroaches of Australia. CSIRO Publishing. ISBN 978-0-643-10320-7.
46. Jump up^ Bell, William J.; Adiyodi, K. G. (1981). American Cockroach. Springer. p. 4. ISBN 978-0-412-16140-7.
47. Jump up^ Slaytor, Michael (1992). "Cellulose digestion in termites and cockroaches: What role do symbionts play?". Comparative Biochemistry and Physiology B. 103 (4): 775–784. doi:10.1016/0305-0491(92)90194-V.
48. Jump up^ Eggleton, P. (2001). "Termites and trees: a review of recent advances in termite phylogenetics". Insectes Sociaux. 48 (3): 187–193. doi:10.1007/PL00001766.
49. Jump up^ Lo, N.; Bandi, C.; Watanabe, H.; Nalepa, C.; Beninati, T. (2003). "Evidence for Cocladogenesis Between Diverse Dictyopteran Lineages and Their Intracellular Endosymbionts" (PDF). Molecular Biology and Evolution. 20 (6): 907–13. doi:10.1093/molbev/msg097. PMID 12716997. Archived from the original (PDF)on 8 August 2011.
50. Jump up^ Leung, Chee Chee (22 March 2007). "Cave may hold missing link". The Age. Retrieved 24 November 2015.
51. ^ Jump up to:^a b Lo, N.; Beninati, T; Stone, F.; Walker, J.; Sacchi, L. (2007). "Cockroaches that lackBlattabacterium endosymbionts: The phylogenetically divergent genus Nocticola". Biology Letters. 3 (3): 327–30. doi:10.1098/rsbl.2006.0614. PMC 2464682 . PMID 17376757.
52. ^ Jump up to:^a b c "The Cockroach FAQ". University of Massachusetts. Retrieved 24 November2015.
53. Jump up^ Mullen, Gary; Durden, Lance, eds. (2002). Medical and Veterinary Entomology. Amsterdam: Academic Press. p. 32. ISBN 0-12-510451-0.
54. Jump up^ Tanaka, K.; Tanaka, S. (1997). "Winter Survival and Freeze Tolerance in a Northern Cockroach, Periplaneta japonica (Blattidae: Dictyoptera)". Zoological Science. 14 (5): 849–853. doi:10.2108/zsj.14.849.
55. Jump up^ Berenbaum, May (30 September 2009). The Earwig's Tail: A Modern Bestiary of Multi-legged Legends. Harvard University Press. pp. 53–54. ISBN 978-0-674-03540-9.
56. ^ Jump up to:^a b Choi, Charles (15 March 2007). "Fact or fiction?: a cockroach can live without its head". Scientific American. Scientific American. Retrieved 27 December 2013.
57. Jump up^ Kruszelnicki, Karl S. (23 February 2006). "Cockroaches and Radiation". ABC Science. Retrieved 24 November 2015.
58. Jump up^ Bell, W. J. (2012) [1981]. The Laboratory Cockroach: Experiments in cockroach anatomy, physiology and behavior. Springer. ISBN 978-94-011-9726-7.
59. Jump up^ "Cockroaches: The insect we are programmed to fear". BBC. 18 September 2014.
60. Jump up^ Gullan, P. J.; Cranston, P. S. (2014). The Insects: An Outline of Entomology. Wiley. p. 508. ISBN 978-1-118-84615-5.
61. Jump up^ Brenner, R.J.; Koehler, P.; Patterson, R.S. (1987). "Health Implications of Cockroach Infestations". Infestations in Med. 4 (8): 349–355.
62. Jump up^ Rivault, C.; Cloarec, A.; Guyader, A. Le (1993). "Bacterial load of cockroaches in relation to urban environment". Epidemiology and Infection. 110 (2): 317–325. doi:10.1017/S0950268800068254. PMC 2272268 . PMID 8472775.
63. Jump up^ Elgderi, R.M.; Ghenghesh, K.S.; Berbash, N. (2006). "Carriage by the German cockroach (Blattella germanica) of multiple-antibiotic-resistant bacteria that are potentially pathogenic to humans, in hospitals and households in Tripoli, Libya". Ann Trop Med Parasitol. 100 (1): 55–62. doi:10.1179/136485906X78463. PMID 16417714.
64. Jump up^ Bernton, H.S.; Brown, H. (1964). "Insect Allergy Preliminary Studies of the Cockroach". J. Allergy. 35 (506–513): 506–13. doi:10.1016/0021-8707(64)90082-6. PMID 14226309.
65. Jump up^ Kutrup, B (2003). "Cockroach Infestation in Some Hospitals in Trabzon, Turkey"(PDF). Turk. J. Zool. 27: 73–77.
66. Jump up^ Santos, A. B.; Chapman, M. D.; Aalberse, R. C.; Vailes, L. D.; Ferriani, V. P.; Oliver, C.; Rizzo, M. C.; Naspitz, C. K.; et al. (1999). "Cockroach allergens and asthma in Brazil: identification of tropomyosin as a major allergen with potential cross-reactivity with mite and shrimp allergens". The Journal of Allergy and Clinical Immunology. 104 (2): 329–337. doi:10.1016/S0091-6749(99)70375-1. PMID 10452753.
67. Jump up^ Kang, B.; Vellody, D.; Homburger, H.; Yunginger, J. W. (1979). "Cockroach cause of allergic asthma. Its specificity and immunologic profile". The Journal of Allergy and Clinical Immunology. 63 (2): 80–86. doi:10.1016/0091-6749(79)90196-9. PMID 83332.
68. Jump up^ Eggleston, P.A.; Arruda, L.K. (2001). "Ecology and elimination of cockroaches and allergens in the home". Journal of Allergy and Clinical Immunology. 107: S422–S429. doi:10.1067/mai.2001.113671.
69. Jump up^ Helmer, Hendrik (10 November 2017). "Experience: A cockroach got stuck in my ear". Theguardian.com. Retrieved 10 November 2017.
70. Jump up^ "Doctors Pull Cockroach From Australian Man's Ear (PHOTO)". Huffingtonpost.com. 10 January 2014. Retrieved 10 November 2017 – via Huff Post.
71. Jump up^ "Doctor pulls 2cm long cockroach from Hendrik Helmer's ear". Independent.co.uk. 10 January 2014. Retrieved 10 November 2017.
72. Jump up^ "Man has 2cm cockroach removed from ear". Abc.net.au. 10 January 2014. Retrieved 10 November 2017.
73. Jump up^ Malhotra, Priya (23 August 2011). "The Common Ailment of Cockroach-in-Ear". Huffingtonpost.com. Retrieved 10 November 2017.
74. Jump up^ "Best Home Remedies To Kill And Control Cockroaches – Baking Soda". HRT.whw1.com. Retrieved 2015-06-20.
75. Jump up^ "Best Home Remedies To Kill And Control Cockroaches – Catnip". HRT.whw1.com. Retrieved 20 June 2015.
76. ^ Jump up to:^a b "Cockroaches". Alamance County Department of Environmental Health. Archived from the original on March 12, 2009. Retrieved 11 May 2008.
77. Jump up^ Li J. and Ho S.H. Pandan leaves (Pandanus amaryllifolius Roxb.) As A Natural Cockroach Repellent. Proceedings of the 9th National Undergraduate Research Opportunities Programme (13 September 2003).
78. Jump up^ Piper, Ross (2007). Extraordinary Animals: An Encyclopedia of Curious and Unusual Animals. Greenwood Press.
79. Jump up^ Herms, William Brodbeck (1915). Medical and Veterinary Entomology. MacMillan. p. 44.
80. ^ Jump up to:^a b Marion Copeland [2004]. Cockroach (Pages 86 to 88). Published by Reaktion Books
81. Jump up^ Ronald L. Taylor, Barbara J. Carter [1976]. Entertaining with Insects: Or, The Original Guide to Insect Cookery. Published by Woodbridge Press Publishing Company.
82. Jump up^ David George Gordon [1998]. The Eat-a-bug Cookbook (Page 78). Published by Ten Speed Press.
83. Jump up^ Demick, Barbara (15 October 2013). "Cockroach farms multiplying in China". Los Angeles Times. Retrieved 20 April 2018.
84. Jump up^ Malcolm Moore [2013]. How to eat a cockroach: a Telegraph guide. Published by Washington Post.
85. Jump up^ [2015]. How cockroaches could save lives. Published by BBC News.
86. Jump up^ David McKenzie [2014]. Eating cockroaches in China: Healing and delicious?. Published by CNN.
87. Jump up^ Richard Schweid [2015]. The Cockroach Papers: A Compendium of History and Lore (Page 69). Published by University of Chicago Press.
88. Jump up^ Chen, Stephen (2018-04-19). "A giant indoor farm in China is breeding 6 billion cockroaches a year. Here's why". South China Morning Post. Retrieved 2018-04-20.
89. Jump up^ Kmietowicz, Z. (1997-05-17). "Cockroaches blamed for high asthma rates". BMJ. 314(7092): i–i. doi:10.1136/bmj.314.7092.1433i.
90. Jump up^ "Lord Howe Island wood-feeding cockroach – endangered species listing". Office of Environment and Heritage. Government of New South Wales. 2011. Retrieved 10 November 2015.
91. Jump up^ Gerlach, J. (2012). "Delosia ornata". The IUCN Red List of Threatened Species. IUCN. 2012: e.T199490A2593559. doi:10.2305/IUCN.UK.2012.RLTS.T199490A2593559.en. Retrieved 6 January 2018.
92. Jump up^ Gerlach, J. (2012). "Nocticola gerlachi". The IUCN Red List of Threatened Species. IUCN. 2012: e.T199508A2595807. doi:10.2305/IUCN.UK.2012.RLTS.T199508A2595807.en. Retrieved 6 January 2018.
93. Jump up^ "Исчезновение тараканов на Белгородчине не связано с радиацией". Bel.ru (in Russian). 4 December 2006. Retrieved 24 November 2015.
94. Jump up^ Anthon, Charles (1843). Smith, William, ed. A Dictionary of Greek and Roman Antiquities (3rd American ed.). New York – Cincinnati – Chicago: American Book Company. p. 161.
95. ^ Jump up to:^a b Lockyer, Norman (1871). Nature. Macmillan Journals. p. 27.
96. Jump up^ Hearn, Lafcadio; Starr, S. Frederick (2001). Inventing New Orleans: Writings of Lafcadio Hearn. University Press of Mississippi. pp. 68–69. ISBN 978-1-57806-353-6.
97. Jump up^ Wu, Hao; Appel, Arthur G.; Hu, Xing Ping (2013). "Instar Determination of Blaptica dubia (Blattodea: Blaberidae) Using Gaussian Mixture Models". Annals of the Entomological Society of America. 106 (3): 323–328. doi:10.1603/AN12131. ISSN 0013-8746.
98. Jump up^ Mulder, Phil. "Madagascar Hissing Cockroaches: Information and Care" (PDF). Oklahoma 4-H Youth Development. Oklahoma State University. Retrieved 31 October2013.
99. Jump up^ "Blattodea Culture Group". Blattodea-culture-group.org. Retrieved 10 November2017.
100. Jump up^ Bragg, P.E. (1997) An Introduction to Rearing Cockroaches. P.E. Bragg, Ilkeston.
101. Jump up^ ""Hope" the Russian cockroach gives birth to first space babies". RIA Novosti. 23 October 2007. Retrieved 24 November 2015.
102. Jump up^ Berle, D. (2007). "Graded Exposure Therapy for Long-Standing Disgust-Related Cockroach Avoidance in an Older Male". Clinical Case Studies. 6 (4): 339–347. doi:10.1177/1534650106288965.
103. Jump up^ Botella, C.M.; Juan, M. C.; Baños, R. M.; Alcañiz, M.; Guillén, V.; Rey, B. (2005). "Mixing Realities? An Application of Augmented Reality for the Treatment of Cockroach Phobia". CyberPsychology & Behavior. 8 (2): 162–171. doi:10.1089/cpb.2005.8.162.
104. Jump up^ Klausnitzer, B. (1987). Insects: their biology and cultural history. New York: Universe Books. p. 42. ISBN 978-0-87663-666-4.
105. Jump up^ Madonna. "Madonna". Thinkexist.com. Retrieved 29 April 2012. I am a survivor. I am like a cockroach, you just can't get rid of me
106. Jump up^ "Cockroaches are not radiation-proof and most are not pests". BBC Earth. Retrieved 1 June 2018.

External links

Wikimedia Commons has media related to Blattodea.

Wikispecies has information related to Blattodea

• Cockroach Species File Online world catalogue of cockroaches.
• Cockroaches chapter in United States Environmental Protection Agency and UF/IFAS National Public Health Pesticide Applicator Training Manual
• Cockroach Studies journal (ISSN 1862-6491)

[show]

• v
• t
• e

Cockroaches

[show]

• v
• t
• e

Insect orders

[show]

• v
• t
• e

Extant Blattodea families

Categories: 

• Cockroaches
• Household pest insects
• Insect common names
• Insects in culture