Knowledge (XXG)

Anti-predator adaptation

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610:. The idea behind Batesian mimicry is that predators that have tried to eat the unpalatable species learn to associate its colors and markings with an unpleasant taste. This results in the predator learning to avoid species displaying similar colours and markings, including Batesian mimics, which are in effect parasitic on the chemical or other defences of the unprofitable models. Some species of octopus can mimic a selection of other animals by changing their skin color, skin pattern and body motion. When a damselfish attacks an octopus, the octopus mimics a banded sea-snake. The model chosen varies with the octopus's predator and habitat. Most of these octopuses use Batesian mimicry, selecting an organism repulsive to predators as a model. 992: 479:", causes the fawn's heart rate to drop from 155 to 38 beats per minute within one beat of the heart. This drop in heart rate can last up to two minutes, causing the fawn to experience a depressed breathing rate and decrease in movement, called tonic immobility. Tonic immobility is a reflex response that causes the fawn to enter a low body position that simulates the position of a corpse. Upon discovery of the fawn, the predator loses interest in the "dead" prey. Other symptoms of alarm bradycardia, such as salivation, urination, and defecation, can also cause the predator to lose interest. 1285: 693: 147: 911: 629: 33: 766: 488: 1199: 844: 448: 319: 1357: 570: 257: 198: 944: 396: 806: 940:
exceed those of lions for great distances, lions try to attack an ostrich when its head is down. By grouping, the ostriches present the lions with greater difficulty in determining how long the ostriches' heads stay down. Thus, although individual vigilance decreases, the overall vigilance of the group increases.
935:. Goshawks are less successful when attacking larger flocks of wood pigeons than they are when attacking smaller flocks. This is because the larger the flock size, the more likely it is that one bird will notice the hawk sooner and fly away. Once one pigeon flies off in alarm, the rest of the pigeons follow. Wild 52:. First, the predators approach their potential prey. Predators bite or try to swallow the hagfishes, but the hagfishes have already projected jets of slime (arrows) into the predators' mouths. Choking, the predators release the hagfishes and gag in an attempt to remove slime from their mouths and gill chambers. 681:. These fish have a sharp scalpel-like spine on the front of each of their tail fins, able to inflict deep wounds. The area around the spines is often brightly colored to advertise the defensive capability; predators often avoid the Sohal surgeonfish. Defensive spines may be detachable, barbed or poisonous. 1147:
secrete enormous amounts of mucus when it is provoked or stressed. The gelatinous slime has dramatic effects on the flow and viscosity of water, rapidly clogging the gills of any fish that attempt to capture hagfish; predators typically release the hagfish within seconds. Common predators of hagfish
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and his colleagues as an example of this. When stationary, a single zebra stands out because of its large size. To reduce the risk of attack, zebras often travel in herds. The striped patterns of all the zebras in the herd may confuse the predator, making it harder for the predator to focus in on an
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or other snake, a "chutter". The monkeys hearing these calls respond defensively, but differently in each case: to the eagle call, they look up and run into cover; to the leopard call, they run up into the trees; to the snake call, they stand on two legs and look around for snakes, and on seeing the
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also seeds of plants, make use of poisonous chemicals for self-defence. These may be concentrated in surface structures such as spines or glands, giving an attacker a taste of the chemicals before it actually bites or swallows the prey animal: many toxins are bitter-tasting. A last-ditch defence is
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in Tsavo National Park in Kenya feed either alone or in groups of up to four birds. They are subject to predation by lions. As the ostrich group size increases, the frequency at which each individual raises its head to look for predators decreases. Because ostriches are able to run at speeds that
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to explain why animals seek central positions in a group. The theory's central idea is to reduce the individual's domain of danger. A domain of danger is the area within the group in which the individual is more likely to be attacked by a predator. The center of the group has the lowest domain of
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of North America have evolved to eliminate their shadow and blend in with the ground. The bodies of these lizards are flattened, and their sides thin towards the edge. This body form, along with the white scales fringed along their sides, allows the lizards to effectively hide their shadows. In
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A radical strategy for avoiding predators which may otherwise kill a large majority of the emerging stage of a population is to emerge very rarely, at irregular intervals. Predators with a life-cycle of one or a few years are unable to reproduce rapidly enough in response to such an emergence.
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occurs when an organism (the mimic) simulates signal properties of another organism (the model) to confuse a third organism. This results in the mimic gaining protection, food, and mating advantages. There are two classical types of defensive mimicry: Batesian and Müllerian. Both involve
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when threatened. The stomach oil is made from their aquatic diets. It causes the predator's feathers to mat, leading to the loss of flying ability and the loss of water repellency. This is especially dangerous for aquatic birds because their water repellent feathers protect them from
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are able to shoot squirts of blood from their eyes, by rapidly increasing the blood pressure within the eye sockets, if threatened. Because an individual may lose up to 53% of blood in a single squirt, this is only used against persistent predators like foxes, wolves and coyotes
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uses any combination of materials, coloration, or illumination for concealment to make the organism hard to detect by sight. It is common in both terrestrial and marine animals. Camouflage can be achieved in many different ways, such as through resemblance to surroundings,
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used by animals to either avoid predation or to enhance prey hunting. Predation risk has long been recognized as critical in shaping behavioral decisions. For example, this predation risk is of prime importance in determining the time of evening emergence in echolocating
421:, jumping high with stiff legs and an arched back. This is thought to signal to predators that they have a high level of fitness and can outrun the predator. As a result, predators may choose to pursue a different prey that is less likely to outrun them. 982:
Defensive structures such as spines may be used both to ward off attack as already mentioned, and if need be to fight back against a predator. Methods of fighting back include chemical defences, mobbing, defensive regurgitation, and suicidal altruism.
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are insects that live on the surface of fresh water, and are attacked from beneath by predatory fish. Experiments varying the group size of the water striders showed that the attack rate per individual water strider decreases as group size increases.
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with zigzagging or jinking flight. In the tropical rain forests of Southeast Asia in particular, many vertebrates escape predators by falling and gliding. Among the insects, many moths turn sharply, fall, or perform a powered dive in response to the
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In the improved vigilance effect, groups are able to detect predators sooner than solitary individuals. For many predators, success depends on surprise. If the prey is alerted early in an attack, they have an improved chance of escape. For example,
194:. They forage in relatively open habitats, and reduce their activity outside their nest burrows in response to moonlight. During a full moon, they shift their activity towards areas of relatively dense cover to compensate for the extra brightness. 381:, so as to scare off or momentarily distract a predator, thus giving the prey animal an opportunity to escape. In the absence of toxins or other defences, this is essentially bluffing, in contrast to aposematism which involves honest signals. 3386:
Eisner, Thomas; Jones, Tappey H.; Aneshansley, Daniel J.; Tschinkel, Walter R.; Silberglied, Robert E.; Meinwald, Jerrold (1977). "Chemistry of defensive secretions of bombardier beetles (Brachinini, Metriini, Ozaenini, Paussini)".
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has specialized glands on the tip of its abdomen that allows it to direct a toxic spray towards predators. The spray is generated explosively through oxidation of hydroquinones and is sprayed at a temperature of 100 °C.
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Individuals living in large groups may be safer from attack because the predator may be confused by the large group size. As the group moves, the predator has greater difficulty targeting an individual prey animal. The
3416: 1186:, a common predator. The male red colobus monkeys group together and place themselves between predators and the group's females and juveniles. The males jump together and actively bite the chimpanzees. 1633:
Daly, M.; Behrends, P.R.; Wilson, M.; Jacobs, L. (1992). "Behavioural modulation of predation risk: moonlight avoidance and crepuscular compensation in a nocturnal desert rodent, Dipodomys merriami".
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In communal defence, prey groups actively defend themselves by grouping together, and sometimes by attacking or mobbing a predator, rather than allowing themselves to be passive victims of predation.
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proposed that group living evolved because it provides benefits to the individual rather than to the group as a whole, which becomes more conspicuous as it becomes larger. One common example is the
797:. Using decoy seals, the researchers varied the distance between the decoys to produce different domains of danger. The seals with a greater domain of danger had an increased risk of shark attack. 711:, have numerous protuberances and stinging spines along their dorsal surfaces. Species that possess these stinging spines suffer less predation than larvae that lack them, and a predator, the 433:, benefiting both predator and prey: the predator is informed that it has been detected and might as well save time and energy by giving up the chase, while the prey is protected from attack. 1270:
to protect the entire colony, so the self-destructive acts benefit all individuals in the colony. When a worker ant's leg is grasped, it suicidally expels the contents of its hypertrophied
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and other prey mammals flag with conspicuous (often black and white) tail markings when alarmed, informing the predator that it has been detected. Warning calls given by birds such as the
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chicks vomit a bright orange, foul smelling liquid when they sense danger. This repels prospective predators and may alert their parents to danger: they respond by delaying their return.
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often attacks these horses, sucking blood and carrying diseases. When the flies are most numerous, the horses gather in large groups, and individuals are indeed attacked less frequently.
606:, a palatable, harmless prey species mimics the appearance of another species that is noxious to predators, thus reducing the mimic's risk of attack. This form of mimicry is seen in many 1274:, expelling corrosive irritant compounds and adhesives onto the predator. These prevent predation and serve as a signal to other enemy ants to stop predation of the rest of the colony. 551:
attract the attention of predators away from an object, typically the nest or young, that is being protected, as when some birds feign a broken wing while hopping about on the ground.
1313:, according to the animal's capabilities. Escape paths are often erratic, making it difficult for the predator to predict which way the prey will go next: for example, birds such as 71:. Throughout the animal kingdom, adaptations have evolved for every stage of this struggle, namely by avoiding detection, warding off attack, fighting back, or escaping when caught. 2530:"Crypsis, conspicuousness, mimicry and polyphenism as antipredator defences of foraging octopuses on Indo-Pacific coral reefs, with a method of quantifying crypsis form video tapes" 769:
In a group, prey seek central positions in order to reduce their domain of danger. Individuals along the outer edges of the group are more at risk of being targeted by the predator.
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are birds which may nest either solitarily or in colonies. Within colonies, fieldfares mob and defecate on approaching predators, shown experimentally to reduce predation levels.
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Peterson, Steven C., Nelson D. Johnson, and John L. LeGuyader (1987). "Defensive Regurgitation of Allelochemicals Derived From Host Cyanogenesis By Eastern Tent Caterpillars".
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accurately squirt venom from their fangs at the eyes of potential predators, striking their target eight times out of ten, and causing severe pain. Termite soldiers in the
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shed their tails when attacked: the tail goes on writhing for a while, distracting the predator, and giving the lizard time to escape; a smaller tail slowly regrows.
173:. Nocturnality is an animal behavior characterized by activity during the night and sleeping during the day. This is a behavioral form of detection avoidance called 4167:
Geffroy, Benjamin; Sadoul, Bastien; Putman, Breanna J.; Berger-Tal, Oded; Garamszegi, László Zsolt; Møller, Anders Pape; Blumstein, Daniel T. (22 September 2020).
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danger, so animals are predicted to strive constantly to gain this position. Testing Hamilton's selfish herd effect, Alta De Vos and Justin O'Rainn (2010) studied
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The normal reaction of a prey animal to an attacking predator is to flee by any available means, whether flying, gliding, falling, swimming, running, jumping,
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snake, they sometimes mob it. Similar calls are found in other species of monkey, while birds also give different calls that elicit different responses.
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Derby, Charles D. (December 2007). "Escape by Inking and Secreting: Marine Molluscs Avoid Predators Through a Rich Array of Chemicals and Mechanisms".
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death to avoid being attacked by predators seeking live prey. Thanatosis can also be used by the predator in order to lure prey into approaching.
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A dilution effect is seen when animals living in a group "dilute" their risk of attack, each individual being just one of many in the group.
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Alboni, Paolo; Alboni, Marco; Bertorelle, Giorgio (2008). "The origin of vasovagal syncope: to protect the heart or to escape predation?".
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regurgitate when disturbed by ants. The vomit of noctuid moths has repellent and irritant properties that help to deter predator attacks.
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Sherbrooke, W.C. (2001). "Do vertebral-line patterns in two horned lizards (Phrynosoma spp.) mimic plant-stem shadows and stem litter?".
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Foster, W.A.; Treherne, J.E. (1981). "Evidence for the dilution effect in the selfish herd from fish predation on a marine insect".
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in a last-ditch attempt to elude a predator's grasp or to distract the predator and thereby allow escape. The lost body part may be
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Stanford, Craig B (1995). "The influence of chimpanzee predation on group size and anti-predator behavior in red colobus monkeys".
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is the harassing of a predator by many prey animals. Mobbing is usually done to protect the young in social colonies. For example,
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had markedly reduced the antipredator responses of animals such as rats and pigeons; similar changes are observed in captive and
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give themselves a last chance to escape by distracting their attackers. To do this, they eject a mixture of chemicals, which may
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of fish. Experiments provide direct evidence for the decrease in individual attack rate seen with group living, for example in
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Another way to remain unattacked in plain sight is to look different from other members of the same species. Predators such as
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Jones, T.H.; Clark, D.A.; Edwards, A.; Davidson, D.W.; Spande, T.F.; Snelling, R.R. (2004). "The chemistry of exploding ants,
280:, a South American bird, habitually perches on a tree, convincingly resembling a broken stump of a branch, while a butterfly, 4253: 1935:
Bergstrom, C. T.; Lachmann, M. (2001). "Alarm calls as costly signals of antipredator vigilance: the watchful babbler game".
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Predators may feast on the emerging population, but are unable to consume more than a fraction of the brief surfeit of prey.
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spines are long, stiff, break at the tip, and in some species are barbed to stick into a would-be predator. In contrast, the
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Andersson, Malte; Wiklund, Christer G. (1978). "Clumping versus spacing out: Experiments on nest predation in fieldfares (
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fawns, which experience a drop in heart rate in response to approaching predators. This response, referred to as "alarm
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Pursuit-deterrent signals are behavioral signals used by prey to convince predators not to pursue them. For example,
182:. Although early access during brighter times permits easier foraging, it also leads to a higher predation risk from 1762: 966: 692: 2818:
Duncan, P.; Vigne, N. (1979). "The effect of group size in horses on the rate of attacks by blood-sucking flies".
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is a sharp, needle-like structure used to inflict pain on predators. An example of this seen in nature is in the
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include seabirds, pinnipeds and cetaceans, but few fish, suggesting that predatory fish avoid hagfish as prey.
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Group living can decrease the risk of predation to the individual in a variety of ways, as described below.
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Alternatively, prey animals may ward off attack, whether by advertising the presence of strong defences in
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individual zebra. Furthermore, when moving rapidly, the zebra stripes create a confusing, flickering
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selectively hunt for abundant types of insect, ignoring less common types that were present, forming
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Vincent, J. F. V.; Owers, P. (1986). "Mechanical design of hedgehog spines and porcupine quills".
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Many animals are protected against predators with armour in the form of hard shells (such as most
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regurgitates a droplet of digestive fluid to repel attacking ants. Similarly, larvae of the
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Derby, Charles D.; Kicklighter, Cynthia E.; Johnson, P. M. & Xu Zhang (29 March 2007).
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or otherwise confuse predators. In response to a predator, animals in these groups release
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addition, these lizards hide any remaining shadows by pressing their bodies to the ground.
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follows a zigzagging path, often doubling back erratically, when chased by a fish-eating
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Some prey animals are able to eject noxious materials to deter predators actively. The
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Endler, J. A. (1981). "An overview of the relationships between mimicry and crypsis".
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The first line of defence consists in avoiding detection, through mechanisms such as
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Holen, O.H.; Johnstone, R. A. (2004). "The Evolution of Mimicry under Constraints".
2416: 2001: 1921: 1878: 1794: 1356: 836:, which emerge at intervals of 13 or 17 years, are often used as an example of this 256: 4406: 4249: 3537: 2882: 2791: 2598: 2375:
Ritland, D. B. (1995). "Comparative unpalatability of mimetic viceroy butterflies (
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Hingston, R. W. G. (1927). "The liquid-squirting habit of oriental grasshoppers".
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Murphy, Shannon M.; Leahy, Susannah M.; Williams, Laila S.; Lill, John T. (2010).
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Avoiding Attack: The Evolutionary Ecology of Crypsis, Warning Signals and Mimicry
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can sacrifice a claw, which can be regrown over several successive moults; among
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can distract predators, continuing to writhe while the lizard makes its escape.
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Some birds and insects use defensive regurgitation to ward off predators. The
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secrete noxious liquids when threatened, sometimes ejecting these forcefully.
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Animals may avoid becoming prey by living out of sight of predators, whether
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Getty, T. (2002). "The discriminating babbler meets the optimal diet hawk".
1428: 1411: 1376: 1339: 1318: 1306: 1289: 840:, though other explanations of their unusual life-cycle have been proposed. 754: 682: 667: 569: 366: 166: 150: 87: 60: 4212: 4014: 3855: 3757: 3592: 3500: 3182: 3163: 2977: 2959: 2672:; a remarkable case of mimicry in butterflies. (R. Meldola translation.)". 2647: 2629: 2590: 2554: 2529: 2514: 2496: 2408: 2357: 2332: 2214: 2156: 2071: 1993: 1958: 1786: 1533: 545:, affecting the predator's feeding senses, causing it to attack the cloud. 3810:
Parejo, D; Avilés, JM; Peña, A; Sánchez, L; Ruano, F; et al. (2013).
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Bildstein, Keith L. (May 1983). "Why White-Tailed Deer Flag Their Tails".
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Tropical rain forests : an ecological and biogeographical comparison
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Hulme, P. E.; Benkman, C. W. (2002). Herrera, C. M.; Pellmyr, O. (eds.).
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Pasteur, Georges (1982). "A classificatory review of mimicry systems".
1913: 1492:"Hagfish Slime as a Defense Mechanism against Gill-breathing Predators" 1414:
recorded observations (around 350 BC) of the antipredator behaviour of
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Stevens, M; Searle, WT; Seymour, JE; Marshall, KL; Ruxton, GD (2011).
1515: 3681:) to Antipredator Blood-Squirting and Blood of Texas Horned Lizards ( 2874: 2282: 2280: 2140: 1441: 1400: 1360: 1167: 1105: 617:, two or more aposematic forms share the same warning signals, as in 607: 400: 323: 3890: 3623: 3607: 2434: 1832: 1162: 3473:
Young, B. A.; Dunlap, K.; Koenig, K.; Singer, M. (September 2004).
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Bertram, Brian C. (1980). "Vigilance and group size in ostriches".
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wrote a compendious study of camouflage, mimicry, and aposematism,
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give different calls depending on the nature of the attack: for an
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Many species make use of behavioral strategies to deter predators.
3283:"A review on self-destructive defense behaviors in social insects" 1490:; Stewart, Andrew L.; Struthers, Carl D.; Harvey, Euan S. (2011). 1396: 1355: 1314: 1283: 1197: 1161: 990: 962: 948: 942: 909: 890: 863: 855: 842: 804: 764: 691: 627: 568: 526: 486: 446: 394: 317: 295: 277: 255: 196: 145: 31: 3926:
Smedley, Scott R., Elizabeth Ehrhardt, and Thomas Eisner (1993).
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Norman, Mark; Finn, Julian; Tregenza, Tom (September 7, 2001).
1112:. Seeds deter predation with combinations of toxic non-protein 4118: 4116: 4114: 4112: 3369: 3367: 599:, or warning signals, to avoid being attacked by a predator. 2993:"The ecology, behavior, and evolution of periodical cicadas" 302:
of the desired prey. This creates a mechanism for negative
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An unusual type of predator deterrence is observed in the
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such as octopuses, make use of patterns of threatening or
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Duverge, P.L.; Jones, G; Rydell, J.; Ransome, R. (2000).
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similarly release blood at their joints when threatened (
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Pulliam, H. R. (1973). "On the advantages of flocking".
1835:. The Conchological Society of Great Britain and Ireland 813:: millions emerge at once, at long intervals, likely to 2528:
Hanlon, R.T.; Forsythe, J.W.; Joneschild, D.E. (1999).
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Pages displaying short descriptions of redirect targets
113:, by using defensive structures such as spines, and by 3276: 3274: 3272: 2379:) from four south-eastern United States populations". 1236:
Numerous insects utilize defensive regurgitation. The
1032:. Many insects acquire toxins from their food plants; 1739:. University of California, Riverside. Archived from 1591:"Functional significance of emergence timing in bats" 1170:
in defensive formation, horns ready, and highly alert
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for the animal's flesh itself to be toxic, as in the
715:, chooses larvae without spines when given a choice. 4045:(2nd ed.). Wiley-Blackwell. pp. 197, 200. 3245: 3243: 3241: 3239: 2674:
Proclamations of the Entomological Society of London
1584: 1582: 1001:, exuding a drop of noxious red liquid (upper right) 4389: 4341: 4299:
Antipredatory Behavior lecture by William E. Cooper
3606:Middendorf, George A.; Sherbrooke, Wade C. (1992). 3516:"Cobras Spit Venom at Eyes With Nearly Perfect Aim" 3448:
Transactions of the Entomological Society of London
3321: 3319: 3200: 2286: 1554:. University of California Press. pp. 117–118. 410:
to the predator that the chase will be unprofitable
36:Anti-predator adaptation in action: the seal shark 4264: 3928:"Defensive Regurgitation by a Noctuid Moth Larva ( 2326: 2324: 2322: 1666: 1664: 584:, similar in appearance, unpalatable to predators. 4069:Trace Fossils: Biology, Taxonomy and Applications 4039:Corlett, Richard T.; Primack, Richard B. (2011). 3670: 3668: 1460: – Psychological impact induced by predators 29:Defensive feature of prey for selective advantage 3281:Davidson, D.W.; Salim, K.A.; Billen, J. (2011). 1552:Introduction to horned lizards of North America 1545: 1543: 2704: 2702: 2700: 1628: 1626: 1387:discard stinging papillae; arthropods such as 1218:vomits a bright orange, oily substance called 4319: 3034:. Oxford University Press. pp. 113–121. 2942:De Vos, A.; O'Riain, M. J. (September 2009). 2612:Norman, M.D.; Finn, J.; Tregenza, T. (2001). 2091: 2089: 1375:(self-amputation), shedding one of their own 885:that give warning of an attack. For example, 67:organisms in their constant struggle against 8: 3962:: CS1 maint: multiple names: authors list ( 3911:: CS1 maint: multiple names: authors list ( 2614:"Dynamic Mimicry in an Indo-Malayan Octopus" 2481:"Dynamic mimicry in an Indo-Malayan octopus" 1469: – Plants' defenses against being eaten 3429:blog, 28 July 2009, retrieved 17 March 2010 3211: 3209: 2370: 2368: 1440:By the 21st century, adaptation to life in 1182:monkeys exhibit mobbing when threatened by 101:animals which do possess such defences, by 4326: 4312: 4304: 4242:Antipredator Defenses in Birds and Mammals 4034: 4032: 666:), or tough chitinous exoskeletons (as in 377:, such as suddenly displaying conspicuous 4349:Coloration evidence for natural selection 4202: 4184: 3947: 3845: 3835: 3747: 3490: 3172: 3162: 2967: 2899:(1971). "Geometry for the selfish herd". 2790: 2780: 2637: 2553: 2534:Biological Journal of the Linnean Society 2504: 2464:Stearns, Stephen; Hoekstra, Rolf (2005). 2356: 2337:Biological Journal of the Linnean Society 2301:Biological Journal of the Linnean Society 1948: 1614: 1523: 1015:Many prey animals, and to defend against 4093:Kruszelnicki, Karl S. (August 9, 1999). 3645:Pianka, Erika R. & Wendy L. Hodges. 2694:. University of Hawaii Press. pp. 96–97. 2017:Annual Review of Ecology and Systematics 784:The selfish herd theory was proposed by 353:Many weakly-defended animals, including 332:, attempting to startle a predator with 4134: 4122: 3441: 3439: 3437: 3435: 3373: 2805: 2468:. Oxford University Press. p. 464. 1478: 1143:The slime glands along the body of the 881:Animals that live in groups often give 499:from its nest by feigning a broken wing 3955: 3904: 3353: 3343: 2991:Williams, K.S. & C. Simon (1995). 276:as inedible objects. For example, the 4105:from the original on October 1, 2016. 3649:. University of Texas. Archived from 3514:Mayell, Hillary (February 10, 2005). 2690:Thomas, Craig. Scott, Susan. (1997). 1486:Zintzen, Vincent; Roberts, Clive D.; 1131:A few vertebrate species such as the 7: 3054: 1833:"Octopus vulgaris. Dymantic display" 1718: 1706: 1694: 1682: 1670: 1206:chick protects itself with a jet of 965:has been suggested by the zoologist 460:Another pursuit-deterrent signal is 4156:. Vol. IX. pp. 621b–622a. 3736:The Journal of Experimental Biology 3014:10.1146/annurev.en.40.010195.001413 2439:Transactions of the Linnean Society 2259:(2nd ed.). CRC Press. p.  2029:10.1146/annurev.es.13.110182.001125 974:effect in the eye of the predator. 272:Animals can hide in plain sight by 109:that pursuit is not worthwhile, by 4007:10.1023/b:joec.0000042063.01424.28 3460:10.1111/j.1365-2311.1927.tb00060.x 2723:10.1111/j.1469-7998.1986.tb03620.x 2451:10.1111/j.1096-3642.1860.tb00146.x 2331:Holmgren, H.; Enquist, M. (1999). 2313:10.1111/j.1095-8312.1981.tb01840.x 1616:10.1111/j.1600-0587.2000.tb00258.x 707:Many species of slug caterpillar, 25: 3201:Ruxton, Sherratt & Speed 2004 2287:Ruxton, Sherratt & Speed 2004 897:or other cat, a loud bark; for a 662:), leathery or scaly skin (as in 59:are mechanisms developed through 2618:Proceedings: Biological Sciences 2485:Proceedings: Biological Sciences 951:is hard to catch amongst a herd. 3936:Psyche: A Journal of Entomology 3543:Sociobiology: the New Synthesis 3479:Journal of Experimental Biology 3330:. Blackwell. pp. 132–154. 2333:"Dynamics of mimicry evolution" 2108:from the original on 2021-09-24 1467:Plant defense against herbivory 286:, looks just like a dead leaf. 4255:Adaptive Coloration in Animals 4244:. University of Chicago Press. 3259:New Zealand Ecological Society 2901:Journal of Theoretical Biology 2742:. Reaktion Books. p. 10. 2736:Warwick, Hugh (15 June 2014). 2096:Inman, Mason (29 March 2005). 1831:Smith, Ian (3 December 2012). 1568:Adaptive Coloration in Animals 1434:Adaptive Coloration in Animals 1036:caterpillars accumulate toxic 918:, chases up an alert flock of 471:An example of this is seen in 1: 4095:"Real Wheel Animals—Part Two" 4072:. Routledge. pp. 69–72. 3124:10.1016/S0003-3472(80)80030-3 1871:10.1016/S0003-3472(86)80052-5 1647:10.1016/s0003-3472(05)80748-1 304:frequency-dependent selection 208:, its flattened, fringed and 4283:; Speed, Michael P. (2004). 4186:10.1371/journal.pbio.3000818 4066:Bromley, Richard G. (2012). 3837:10.1371/journal.pone.0068862 3789:10.1016/0003-3472(78)90110-0 3401:10.1016/0022-1910(77)90162-7 3389:Journal of Insect Physiology 3230:10.1016/0003-3472(95)90033-0 3089:10.1016/0022-5193(73)90184-7 2921:10.1016/0022-5193(71)90189-5 2832:10.1016/0003-3472(79)90201-x 2098:"Sea Hares Lose Their Lunch" 1571:. London: Methuen. pp.  1371:Some animals are capable of 1124:and amylase inhibitors, and 893:, a disyllabic cough; for a 3987:Journal of Chemical Ecology 3001:Annual Review of Entomology 2251:Barrows, Edward M. (2001). 2187:Journal of Chemical Ecology 2052:Clinical Autonomic Research 1325:evade fast raptors such as 117:. Members of groups are at 4503: 4258:. Oxford University Press. 2466:Evolution: An Introduction 1550:Sherbrooke, W. C. (2003). 1349: 1251: 1155: 1004: 931:flocks are preyed upon by 874: 820: 777: 722: 558: 502: 462:thanatosis or playing dead 440: 388: 346: 220: 139: 128: 107:signalling to the predator 4263:Edmunds, Malcolm (1974). 3677:"Responses of Kit Foxes ( 3302:10.1007/s00040-011-0210-x 2207:10.1007/s10886-007-9279-0 2064:10.1007/s10286-008-0479-7 1808:Edmunds, Malcolm (2012). 1779:10.1017/S1464793105006810 1458:Ecology of fear (concept) 1296:fly from possible danger. 1158:Mobbing (animal behavior) 385:Pursuit-deterrent signals 119:reduced risk of predation 86:, living underground, or 57:Anti-predator adaptations 48:(d–f) attempt to prey on 4487:Antipredator adaptations 4402:Anti-predator adaptation 4099:Great Moments in Science 3548:Harvard University Press 3030:; Harper, David (2003). 1733:"Antipredatory Behavior" 1238:eastern tent caterpillar 995:The bloody-nose beetle, 854:that warn of attacks by 753:in Southern France. The 541:, creating a cloud, and 235:, shadow elimination by 42:(a–c) and the wreckfish 18:Antipredator adaptations 4376:Paradox of the plankton 2571:The American Naturalist 2129:The Biological Bulletin 1894:The American Naturalist 1407:History of observations 1260:Malaysian exploding ant 1194:Defensive regurgitation 555:Mimicry and aposematism 452:Eastern hog-nosed snake 245:flat-tail horned lizard 212:body eliminating shadow 206:flat-tail horned lizard 4153:The History of Animals 3593:10.1006/jare.2001.0852 3164:10.1186/1741-7007-9-81 2960:10.1098/rsbl.2009.0628 2630:10.1098/rspb.2001.1708 2555:10.1006/bijl.1998.0264 2497:10.1098/rspb.2001.1708 2358:10.1006/bijl.1998.0269 1994:10.1006/anbe.2001.1890 1959:10.1006/anbe.2000.1636 1368: 1297: 1227:when diving for food. 1211: 1171: 1060:). Several species of 1002: 952: 923: 867: 818: 770: 704: 646: 585: 500: 497:distracting a predator 457: 411: 343:Startling the predator 336: 269: 213: 210:disruptively patterned 158: 53: 4342:Patterns of evolution 3526:on November 10, 2005. 3250:Warham, John (1977). 2792:10.1093/beheco/arp166 2782:10.1093/beheco/arp166 2692:All Stings Considered 1359: 1287: 1252:Further information: 1201: 1165: 1156:Further information: 1118:cyanogenic glycosides 1085:Tegra novaehollandiae 1005:Further information: 994: 946: 913: 846: 808: 768: 723:Further information: 695: 631: 572: 490: 450: 398: 389:Further information: 321: 259: 233:disruptive coloration 200: 149: 129:Further information: 35: 4354:Convergent evolution 4335:Evolutionary ecology 3930:Litoprosopus futilis 3550:. pp. 302–305. 3395:(11–12): 1383–1386. 1332:sonar clicks of bats 1272:submandibular glands 998:Timarcha tenebricosa 650:Defensive structures 549:Distraction displays 241:counter-illumination 136:Staying out of sight 45:Polyprion americanus 4427:Distraction display 4371:Divergent evolution 4281:Sherratt, Thomas N. 4137:, pp. 179–181. 4125:, pp. 145–149. 3999:2004JCEco..30.1479J 3983:Cylindricus complex 3883:1987Ecol...68.1268P 3828:2013PLoSO...868862P 3701:10.1643/ch-03-157r1 3683:Phrynosoma cornutum 3585:2002JArEn..50..109S 3520:National Geographic 3376:, pp. 189–201. 3081:1973JThBi..38..419P 3057:, pp. 115–149. 3028:Maynard Smith, John 2913:1971JThBi..31..295H 2867:1981Natur.293..466F 2808:, pp. 202–207. 2624:(1478): 1755–1758. 2546:1999BJLS...66....1H 2491:(1478): 1755–1758. 2393:1995Oecol.103..327R 2377:Limenitis archippus 2349:1999BJLS...66..145H 2232:on 15 November 2009 2199:2007JCEco..33.1105D 1810:"Deimatic Behavior" 1731:Cooper, William E. 1709:, pp. 318–320. 1607:2000Ecogr..23...32D 1565:Cott, H.B. (1940). 1508:2011NatSR...1E.131Z 1133:Texas horned lizard 1126:phytohemagglutinins 1067:Poecilocerus pictus 780:Selfish herd theory 623:monarch butterflies 509:distraction display 408:signalling honestly 375:startling behaviour 308:apostatic selection 290:Apostatic selection 204:illustrated by the 157:to avoid predators. 84:apostatic selection 4422:Deimatic behaviour 4381:Predator satiation 4366:Parallel evolution 4267:Defence in Animals 3949:10.1155/1993/67950 3419:2017-09-14 at the 2769:Behavioral Ecology 2711:Journal of Zoology 2401:10.1007/BF00328621 1767:Biological Reviews 1496:Scientific Reports 1488:Anderson, Marti J. 1421:History of Animals 1369: 1334:. Among fish, the 1323:black-headed gulls 1298: 1212: 1172: 1108:, functions as an 1079:Aularches miliaris 1073:Parasanaa donovani 1026:danaid butterflies 1003: 956:Predator confusion 953: 924: 906:Improved vigilance 868: 838:predator satiation 834:Periodical cicadas 823:Predator satiation 819: 801:Predator satiation 795:great white sharks 771: 739:George C. Williams 705: 647: 644:warning coloration 635:Erethizon dorsatum 586: 501: 458: 412: 349:Deimatic behaviour 337: 334:deimatic behaviour 314:Warding off attack 270: 214: 159: 125:Avoiding detection 54: 4459: 4458: 4397:Signalling theory 4277:Ruxton, Graeme D. 4079:978-1-135-07607-8 3749:10.1242/jeb.02067 3538:O. Wilson, Edward 3492:10.1242/jeb.01170 3485:(20): 3483–3494. 3426:Discover Magazine 3337:978-0-632-05267-7 3203:, pp. 64–69. 3041:978-0-19852-685-8 2861:(5832): 466–467. 2749:978-1-78023-315-4 2270:978-0-8493-2005-7 2193:(33): 1105–1113. 1721:, pp. 61–65. 1697:, pp. 53–55. 1685:, pp. 35–60. 1516:10.1038/srep00131 1327:peregrine falcons 1248:Suicidal altruism 1058:autohaemorrhaging 1054:Armoured crickets 1049:bombardier beetle 1011:bombardier beetle 1007:autohaemorrhaging 987:Chemical defences 827:Periodical cicada 815:satiate predators 811:periodical cicada 719:Safety in numbers 679:sohal surgeonfish 615:Müllerian mimicry 473:white-tailed deer 423:White-tailed deer 391:Signalling theory 115:living in a group 105:the attacker, by 16:(Redirected from 4494: 4328: 4321: 4314: 4305: 4288: 4272: 4270: 4259: 4245: 4225: 4224: 4206: 4188: 4164: 4158: 4157: 4144: 4138: 4132: 4126: 4120: 4107: 4106: 4090: 4084: 4083: 4063: 4057: 4056: 4036: 4027: 4026: 3993:(8): 1479–1492. 3974: 3968: 3967: 3961: 3953: 3951: 3923: 3917: 3916: 3910: 3902: 3866: 3860: 3859: 3849: 3839: 3807: 3801: 3800: 3783:(4): 1207–1212. 3777:Animal Behaviour 3768: 3762: 3761: 3751: 3742:(Pt 4): 702–10. 3727: 3721: 3720: 3672: 3663: 3662: 3660: 3658: 3653:on 29 April 2011 3647:"Horned Lizards" 3642: 3636: 3635: 3603: 3597: 3596: 3568: 3562: 3561: 3534: 3528: 3527: 3522:. 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Biol 3059: 3047: 3040: 3032:Animal Signals 3019: 2983: 2934: 2907:(2): 295–311. 2888: 2845: 2810: 2798: 2775:(1): 153–160. 2755: 2748: 2728: 2696: 2683: 2653: 2604: 2583:10.1086/424972 2577:(5): 598–613. 2561: 2520: 2471: 2456: 2445:(3): 495–566. 2422: 2387:(3): 327–336. 2364: 2343:(2): 145–158. 2318: 2291: 2289:, p. 198. 2276: 2269: 2243: 2170: 2135:(3): 274–289. 2119: 2102:Sciencemag.org 2085: 2042: 2007: 1988:(2): 397–402. 1972: 1943:(3): 535–543. 1927: 1906:10.1086/284096 1900:(5): 709–715. 1884: 1865:(3): 663–684. 1846: 1823: 1800: 1773:(4): 573–588. 1754: 1743:on 18 May 2018 1723: 1711: 1699: 1687: 1675: 1660: 1622: 1578: 1557: 1539: 1477: 1475: 1472: 1471: 1470: 1464: 1453: 1450: 1408: 1405: 1350:Main article: 1347: 1344: 1302: 1299: 1281: 1278: 1249: 1246: 1195: 1192: 1153: 1150: 1042:Asclepiadaceae 1017:seed predation 988: 985: 979: 976: 967:Martin Stevens 957: 954: 907: 904: 887:vervet monkeys 875:Main article: 872: 869: 848:Vervet monkeys 802: 799: 791:brown fur seal 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Hamilton 781: 773: 767: 763: 760: 756: 752: 748: 744: 743:W.D. Hamilton 740: 732: 730: 726: 725:Social animal 718: 716: 714: 710: 703: 699: 694: 690: 688: 684: 680: 676: 671: 669: 665: 661: 657: 649: 645: 641: 637: 636: 630: 626: 624: 620: 616: 611: 609: 605: 600: 598: 595: 590: 583: 579: 575: 571: 566: 562: 554: 552: 550: 546: 544: 540: 536: 532: 528: 524: 520: 516: 510: 506: 498: 494: 489: 482: 480: 478: 474: 469: 467: 463: 456: 453: 449: 444: 436: 434: 432: 428: 424: 420: 417: 409: 405: 402: 397: 392: 384: 382: 380: 376: 372: 368: 364: 360: 356: 350: 342: 340: 335: 331: 330: 329:Iris oratoria 325: 320: 313: 311: 309: 305: 301: 300:search images 297: 289: 287: 285: 284: 279: 275: 267: 264: 263: 258: 251: 249: 246: 242: 238: 234: 229: 224: 216: 211: 207: 203: 199: 195: 193: 192:kangaroo rats 189: 185: 181: 176: 172: 168: 164: 156: 152: 148: 143: 135: 132: 124: 122: 120: 116: 112: 108: 104: 100: 96: 91: 89: 85: 81: 77: 72: 70: 66: 62: 58: 51: 47: 46: 41: 40: 34: 27: 19: 4407:Alarm signal 4401: 4284: 4266: 4254: 4241: 4176: 4173:PLOS Biology 4172: 4162: 4152: 4142: 4135:Edmunds 1974 4130: 4123:Edmunds 1974 4098: 4088: 4068: 4061: 4041: 3990: 3986: 3982: 3978: 3972: 3958:cite journal 3939: 3935: 3929: 3921: 3907:cite journal 3874: 3870: 3864: 3819: 3815: 3805: 3780: 3776: 3772: 3766: 3739: 3735: 3725: 3692: 3688: 3682: 3678: 3655:. Retrieved 3651:the original 3640: 3615: 3611: 3601: 3576: 3572: 3566: 3542: 3532: 3524:the original 3509: 3482: 3478: 3468: 3451: 3447: 3424: 3409: 3392: 3388: 3381: 3374:Edmunds 1974 3327: 3293: 3289: 3262: 3258: 3221: 3217: 3154: 3150: 3140: 3115: 3111: 3105: 3072: 3068: 3062: 3050: 3031: 3022: 3005: 2999: 2986: 2954:(1): 48–50. 2951: 2947: 2937: 2904: 2900: 2897:Hamilton, W. 2891: 2858: 2854: 2848: 2823: 2819: 2813: 2806:Edmunds 1974 2801: 2772: 2768: 2758: 2738: 2731: 2714: 2710: 2691: 2686: 2677: 2673: 2669: 2665: 2656: 2621: 2617: 2607: 2574: 2570: 2564: 2537: 2533: 2523: 2488: 2484: 2474: 2465: 2459: 2442: 2438: 2431:Bates, H. W. 2425: 2384: 2380: 2376: 2340: 2336: 2304: 2300: 2294: 2254: 2246: 2234:. Retrieved 2227:the original 2190: 2186: 2173: 2132: 2128: 2122: 2110:. Retrieved 2101: 2058:(4): 170–8. 2055: 2051: 2045: 2020: 2016: 2010: 1985: 1981: 1975: 1940: 1936: 1930: 1897: 1893: 1887: 1862: 1858: 1849: 1837:. Retrieved 1826: 1814:. 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M. 1816:31 December 1416:cephalopods 1393:vertebrates 1381:regenerated 1336:stickleback 1264:hymenoptera 1225:hypothermia 1220:stomach oil 1208:stomach oil 1184:chimpanzees 1180:red colobus 1114:amino acids 1062:grasshopper 1022:puffer fish 929:wood pigeon 883:alarm calls 871:Alarm calls 709:Limacodidae 698:Limacodidae 565:aposematism 483:Distraction 477:bradycardia 371:cephalopods 359:butterflies 188:bat falcons 111:distraction 95:aposematism 4466:Categories 4441:Camouflage 4271:. Longman. 4250:Cott, Hugh 3979:Camponotus 1812:. Springer 1747:23 October 1474:References 1399:and other 1377:appendages 1294:partridges 1254:Autothysis 1188:Fieldfares 1064:including 713:paper wasp 700:slug moth 668:arthropods 597:coloration 594:aposematic 535:mimic food 523:cuttlefish 252:Masquerade 228:Camouflage 223:Camouflage 217:Camouflage 202:Camouflage 151:Fruit bats 80:masquerade 76:camouflage 4482:Predation 4477:Evolution 4287:. Oxford. 4238:Caro, Tim 4221:221864354 4195:1545-7885 4150:(1910) . 4148:Aristotle 3454:: 65–69. 3356:ignored ( 3346:cite book 3328:Granivory 3055:Caro 2005 2717:: 55–75. 2664:(1879). " 2381:Oecologia 2307:: 25–31. 1945:CiteSeerX 1839:1 January 1719:Caro 2005 1707:Cott 1940 1695:Caro 2005 1683:Caro 2005 1671:Cott 1940 1595:Ecography 1448:animals. 1429:Hugh Cott 1427:In 1940, 1412:Aristotle 1385:sea slugs 1340:merganser 1319:ptarmigan 1307:burrowing 1290:pheasants 1288:Startled 1262:. 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Index

Antipredator adaptations

Dalatias licha
Polyprion americanus
hagfishes
evolution
prey
predators
camouflage
masquerade
apostatic selection
nocturnality
aposematism
mimicking
startling
signalling to the predator
distraction
living in a group
reduced risk of predation
Prey detection
Nocturnality

Fruit bats
by night
in caves
burrows
nocturnal
crypsis
bats
bat hawks

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