Aggressive mimicry

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The humpback anglerfish uses a modified dorsal spine as a fishing rod with a bioluminescent lure to attract and capture prey. Humpback anglerfish.png
The humpback anglerfish uses a modified dorsal spine as a fishing rod with a bioluminescent lure to attract and capture prey.
A camouflaged predator: snow leopard in Ladakh. The distinction between aggressive mimicry and predator camouflage depends on the signal given to the prey, not easily determined. Snow Leopard in Ladakh( Photo by Tashi Lonchay).jpg
A camouflaged predator: snow leopard in Ladakh. The distinction between aggressive mimicry and predator camouflage depends on the signal given to the prey, not easily determined.

Aggressive mimicry is a form of mimicry in which predators, parasites, or parasitoids share similar signals, using a harmless model, allowing them to avoid being correctly identified by their prey or host. Zoologists have repeatedly compared this strategy to a wolf in sheep's clothing. [2] [3] [4] In its broadest sense, aggressive mimicry could include various types of exploitation, as when an orchid exploits a male insect by mimicking a sexually receptive female (see pseudocopulation), [5] but will here be restricted to forms of exploitation involving feeding. For example, indigenous Australians who dress up as and imitate kangaroos when hunting would not be considered aggressive mimics, nor would a human angler, though they are undoubtedly practising self-decoration camouflage. Treated separately is molecular mimicry, which shares some similarity; for instance a virus may mimic the molecular properties of its host, allowing it access to its cells. An alternative term, Peckhamian mimicry, has been suggested (after George and Elizabeth Peckham), [6] [7] [8] but it is seldom used. [lower-alpha 1]

Contents

Aggressive mimicry is opposite in principle to defensive mimicry, where the mimic generally benefits from being treated as harmful. The mimic may resemble its own prey, or some other organism which is beneficial or at least not harmful to the prey. The model, i.e. the organism being 'imitated', may experience increased or reduced fitness, or may not be affected at all by the relationship. On the other hand, the signal receiver inevitably suffers from being tricked, as is the case in most mimicry complexes.

Aggressive mimicry often involves the predator employing signals which draw its potential prey towards it, a strategy which allows predators to simply sit and wait for prey to come to them. The promise of food or sex are most commonly used as lures. However, this need not be the case; as long as the predator's true identity is concealed, it may be able to approach prey more easily than would otherwise be the case. In terms of species involved, systems may be composed of two or three species; in two-species systems the signal receiver, or "dupe", is the model.

In terms of the visual dimension, the distinction between aggressive mimicry and camouflage is not always clear. Authors such as Wickler [8] have emphasized the significance of the signal to its receiver as delineating mimicry from camouflage. However, it is not easy to assess how 'significant' a signal may be for the dupe, and the distinction between the two can thus be rather fuzzy. Mixed signals may be employed: aggressive mimics often have a specific part of the body sending a deceptive signal, with the rest being hidden or camouflaged.

Contrast with defensive mimicry

Defensive Batesian mimics, like this bumblebee-mimicking hoverfly, are the antithesis of aggressive mimics. Syrphid fly Mallota 1.jpg
Defensive Batesian mimics, like this bumblebee-mimicking hoverfly, are the antithesis of aggressive mimics.

Aggressive mimicry stands in semantic contrast with defensive mimicry, where it is the prey that acts as a mimic, with predators being duped. Defensive mimicry includes the well-known Batesian and Müllerian forms of mimicry, where the mimic shares outward characteristics with an aposematic or harmful model. In Batesian mimicry, the mimic is modeled on a dangerous (usually unpalatable) species, while in Müllerian mimicry both species are harmful, and act as comimics, converging on a common set of signals and sharing the burden of 'educating' their predators. Included in defensive mimicry is the lesser known Mertensian mimicry, where the mimic is more harmful than the model, and Vavilovian mimicry, where weeds come to mimic crops through unintentional artificial selection. In defensive mimicry, the mimic benefits by avoiding a harmful interaction with another organism that would be more likely to take place without the deceptive signals employed. Harmful interactions might involve being eaten, or pulled out of the ground as a weed. In contrast, the aggressive mimic benefits from an interaction that would be less likely to take place without the deception, at the expense of its target. [9]

Aggressive mimicry compared to a defensive form, Batesian mimicry. The mechanism is often called "Wolf in sheep's clothing". The model for an aggressive mimic can be a harmless species, in which case the 3 roles are disjunct, or the model can be the prey itself, in which case the arrangement is bipolar. Aggressive Mimicry.svg
Aggressive mimicry compared to a defensive form, Batesian mimicry. The mechanism is often called "Wolf in sheep's clothing". The model for an aggressive mimic can be a harmless species, in which case the 3 roles are disjunct, or the model can be the prey itself, in which case the arrangement is bipolar.

Classification

Luring prey

In some cases the dupe is lured toward the mimic. This involves mimicry of a resource that is often vital to the prey's survival (or more precisely, the survival of its genes) such as nutrition or a mate. If the bait offered is of little value to prey they would not be expected to take such a risk. For example, in all known cases of sexual signal mimicry it is always the male sex that is deceived (in fact, it has been suggested that females of some species have evolved mimicry as a strategy to avoid unwanted matings). [10] In these cases the predator need not move about foraging for prey, but may simply stay still and allow prey to come to it. Some studies suggest that the northern shrike (Lanius excubitor) sings in winter often imitating small passerines that may be preyed upon when lured within reach. [11] There has been one report of a margay using mimicry of the cry of an infant pied tamarin to try to lure an adult tamarin within striking distance. [12]

Appearance of food

The alligator snapping turtle uses its tongue to lure fish. Alligator Snapping Turtle.jpg
The alligator snapping turtle uses its tongue to lure fish.

Many aggressive mimics use the promise of nourishment as a way of attracting prey. The alligator snapping turtle (Macrochelys temminckii) is a well-camouflaged ambush predator. Its tongue bears a conspicuous pink extension that resembles a worm and can be wriggled around; [13] fish that try to eat the "worm" are themselves eaten by the turtle. Similarly, some snakes employ caudal luring (using the tail) [14] [15] or lingual luring (using the tongue) to entice small vertebrates into striking range. [16] [17]

Argiope argentata and its web A.argentata01.jpg
Argiope argentata and its web

Aggressive mimicry is common amongst spiders, both in luring prey and stealthily approaching predators. [18] One case is the golden orb weaver (Nephila clavipes), which spins a conspicuous golden coloured web in well-lit areas. Experiments show that bees are able to associate the webs with danger when the yellow pigment is not present, as occurs in less well-lit areas where the web is much harder to see. Other colours too were learned and avoided, but bees seemed least able to effectively associate yellow pigmented webs with danger. Yellow is the colour of many nectar bearing flowers, however, so perhaps avoiding yellow is not worthwhile. Another form of mimicry is based not on colour but pattern. Species such as Argiope argentata employ prominent patterns in the middle of their webs, such as zigzags. These may reflect ultraviolet light, and mimic the pattern seen in many flowers known as nectar guides. Spiders change their web day to day, which can be explained by bees' ability to remember web patterns. Bees are able to associate a certain pattern with a spatial location, meaning the spider must spin a new pattern regularly or suffer diminishing prey capture. [19]

The bright leaves of the Venus flytrap (Dionaea muscipula) attract insects in the same way as flowers. Venus Flytrap showing trigger hairs.jpg
The bright leaves of the Venus flytrap (Dionaea muscipula) attract insects in the same way as flowers.

Spiders can be the prey of aggressive mimics. The assassin bug Stenolemus bituberus preys on spiders, entering their web and plucking its silk threads until the spider approaches. This vibrational aggressive mimicry matches a general pattern of vibrations which spiders treat as prey, having a similar temporal structure and amplitude to leg and body movements of typical prey caught in the web. [20]

Larvae of the ground beetle Epomis move their mandibles one after another to lure amphibians toward them and then prey on them. Their body structure allows them to bite and feed on the amphibians even when they are ingested by larger prey such as frogs. [21]

Although plants are better known for defensive mimicry, there are exceptions. For example, many flowers use mimicry to attract pollinators, while others may trick insects into dispersing their seeds. Nonetheless, most mimicry in plants [lower-alpha 2] would not be classified as aggressive, as although luring pollinators is similar to cases above, they are certainly not eaten by the plant. However some carnivorous plants may be able to increase their rate of capture through mimicry. [24] For example, some have patterns in the ultraviolet region of the electromagnetic spectrum, much like the spider webs described above. [25]

Bipolar mimicry systems

Mimicry systems involving only two species are known as bipolar. [9] Only one bipolar arrangement is possible here, namely where the dupe is itself the model. [lower-alpha 3] There are two such variants on this arrangement of mimic imitating its target. In one case, Kirbyan mimicry, the model is the host of a brood parasite. [26] In the other case, termed Batesian-Wallacian mimicry [9] after Henry Walter Bates [27] and Alfred Russel Wallace, [28] the model is the prey species.

Kirbyan or brood parasite mimicry

Brood parasitism: four clutches of reed warbler eggs, each containing one (larger) cuckoo egg Cuckoo Eggs Mimicking Reed Warbler Eggs.JPG
Brood parasitism: four clutches of reed warbler eggs, each containing one (larger) cuckoo egg

Host-parasite mimicry is a situation where a parasite mimics its own host. As with mimicry of the female sex outlined previously, only two species are involved, the model and mimic being of the same species. Brood parasitism, a form of kleptoparasitism where the mother has its offspring raised by another unwitting organism, is one such situation where host-parasite mimicry has evolved. Georges Pasteur [9] terms this form of aggressive-reproductive mimicry Kirbyan mimicry, after the English entomologist William Kirby, who noticed that the young of syrphid hoverflies are raised by bumblebees. [26]

Batesian-Wallacian or prey mimicry

In Batesian-Wallacian mimicry, the model is a sexually receptive female, which provides a strong attractive effect on males. Some spiders use chemical rather than visual means to ensnare prey. Female bolas spiders of the genus Mastophora lure male moth-flies (Diptera, true flies, but resembling moths) by producing analogues of the moth species' sex pheromones. Each species of spider appears to specialize in a particular species of prey in the family Psychodidae. Juveniles use their front pair of legs to capture prey, such as flies. Older spiders use a different strategy however, swinging a sticky ball known as a bolas suspended by a silk thread at moths. But both old and juvenile are able to lure prey via this olfactory signal; even young spiderlings have been shown to attract prey species. [29]

Gnome-mime-sound-openclipart.svg
Chlorobalius leucoviridis mimicry of Kobonga oxleyi
Kobonga oxleyi cicada song with reply clicks from a Chlorobalius leucoviridis
Chlorobalius leucoviridis mimicry of Pauropsalta sp.
Pauropsalta sp. "Sandstone" song with reply clicks from a Chlorobalius leucoviridis
Problems playing these files? See media help.

The listroscelidine katydid Chlorobalius leucoviridis of inland Australia is capable of attracting male cicadas of the Tribe Cicadettini by imitating the species-specific reply clicks of sexually receptive female cicadas. This example of acoustic aggressive mimicry is similar to the Photuris firefly case in that the predator's mimicry is remarkably versatile – playback experiments show that C. leucoviridis is able to attract males of many cicada species, including Cicadettine cicadas from other continents, even though cicada mating signals are species-specific. The evolution of versatile mimicry in C. leucoviridis may have been facilitated by constraints on song evolution in duetting communication systems in which reply signals are recognizable only by their precise timing in relation to the male song (<< 100 ms reply latency). [30] [31]

Female fireflies of the genus Photuris emit the same light signals that females of the genus Photinus use as a mating signal. [32] Male fireflies from several different genera are attracted to these mimics, and are subsequently captured and eaten. Female signals are based on that received from the male, each female having a repertoire of signals matching the delay and duration of the female of the corresponding species. This mimicry may have evolved from non-mating signals that have become modified for predation. [33]

Wicklerian-Eisnerian or cryptic aggressive mimicry

The zone-tailed hawk resembles the harmless turkey vulture in flight, but attacks other species. ZonetailedHawk2.jpg
The zone-tailed hawk resembles the harmless turkey vulture in flight, but attacks other species.

The prey does not have to be attracted towards the predator for the predator to benefit: it is sufficient for the predator simply not to be identified as a threat. Wicklerian-Eisnerian mimics may resemble a mutualistic ally, or a species of little significance to the prey such as a commensal. [9] For example, the hemipteran Arachnocoris berytoides resembles Faiditus caudatus , a spider commensal of ants. [34]

In cryptic aggressive mimicry, the predator mimics an organism that its prey is indifferent to. This allows the predator to avoid detection until the prey are close enough for the predator to strike, effectively a form of camouflage. The zone-tailed hawk (Buteo albonotatus), which resembles the turkey vulture (Cathartes aura), may provide one such example. It flies amongst them, suddenly breaking from the formation and ambushing its prey. [35] There is some controversy over whether this is a true case of mimicry. [36]

Mimicry of cleaner fish

Two bluestreak cleaner wrasse cleaning a potato grouper, Epinephelus tukula Epinephelus tukula is cleaned by two Labroides dimidiatus.jpg
Two bluestreak cleaner wrasse cleaning a potato grouper, Epinephelus tukula

Mimicry of mutualistic species is seen in coral reef fish, where the models, certain cleaner fish, are greatly disadvantaged by the presence of the mimic. Cleaner fish are mutually beneficial to many other species, which allows them to eat their parasites and dead skin. Some allow the cleaner to venture inside their mouths and gill cavities to hunt these parasites. However, one species of cleaner, the bluestreak cleaner wrasse (Labroides dimidiatus), is the model of a mimic, the sabre-toothed blenny (Aspidontus taeniatus). The cleaner wrasse, shown in the image cleaning a grouper of the genus Epinephelus , resides in coral reefs in the Indian and the Pacific Oceans, and is recognised by other fishes who allow it to clean them. The blenny lives in the Indian Ocean and not only looks like the cleaner wrasse in terms of size and coloration, but even mimics the cleaner wrasse's 'dance'. Having fooled its prey into letting its guard down, the sabre-toothed blenny bites it, tearing off scales or pieces of fin. Fish grazed upon in this fashion learn to distinguish mimic from model, but because of the similarity between the two, they become much more cautious of the model as well, such that both are affected. Due to victims' ability to discriminate between foe and helper, the blennies have evolved close similarity, down to the regional level. [37] Another aggressive mimic of the cleaner wrasse, the bluestriped fangblenny, has evolved an opioid-containing venom which dulls pain and lowers blood pressure, confusing the bitten host and giving the mimic time to escape. [38]

Parasites mimicking host prey

Just as predators such as angler fish have a structure that lures prey, so some parasites mimic their host's natural prey, but with roles reversed; the parasite gets eaten by the host. This deception provides the parasite easy entry into the host, which they can then feed upon, allowing them to continue their life cycle. [39]

One such case is a genus of mussel, Lampsilis , which feeds on the gills of fish in the larval stage of their development. Once they mature, they leave the fish as adult mollusc. Gaining entry into the host is not an easy task though, despite the fact that several hundred thousand larvae are released at once. This is especially the case in flowing water bodies such as streams, where they cannot lie on the substrate and wait to be taken up in the course of foraging. Female Lampsilis have evolved a special technique for delivering their offspring into a suitable host, however. Structures on the edge of the mantle are able to capture the interest of fish. Some resemble small fish themselves, with eye spots, a "tail" and horizontal stripes, and may even move in a similar fashion, as if facing the current (rheotaxis). When overshadowed by a fish, the larvae are forcefully expelled, becoming ecto-parasites on their unsuspecting host. [8] Some species of Lampsilis , notably Lampsilis ovata , attract fish in the genus Micropterus , Villosa has fish-like mantle lures that attract predatory fish Percina . [40]

Cercaria mirabilis, a trematode, has an especially large larval stage, a cercaria, which looks much like a small crustacean or mosquito larva. It mimics the locomotory behavior of such animals, allowing it to be eaten by predaceous fish. [39]

Another parasitic trematode example is seen in a terrestrial setting. Leucochloridium is a genus of flatworm (phylum Platyhelminthes) which matures in the intestine of songbirds. Their eggs pass out of the bird in the feces and are then taken in by Succinea , a terrestrial snail that lives in moist environments. The eggs develop into larvae inside this intermediate host, and then must find their way into the digestive system of a suitable bird. The problem here is that these birds do not eat snails, so the sporocyst must find some way of manipulating its future host into eating it. Unlike related species, these parasites are brightly colored and able to move in a pulsating manner. A sporocyst sac forces its way into the snail's eye stalks, and pulsates at high speed, enlarging the tentacle in the process. [41] It affects the host's behavior: the snail moves towards light, which it usually avoids. These combined factors make the sporocysts highly conspicuous, such that they are soon eaten by a hungry songbird. The snail then regenerates its tentacles, and Leucochloridium carries on with its life cycle. [8]

Wolf in sheep's clothing

Wolf in Sheep's Clothing by Jozef Mehoffer, 1903. Detail of album cover Wolf in Sheep's Clothing - Jozef Mehoffer - Sztuka polska - Malarstwo 1903 (detail).jpg
Wolf in Sheep's Clothing by Józef Mehoffer, 1903. Detail of album cover

Zoologists have repeatedly compared aggressive mimicry to the wolf in sheep's clothing strategy of fable, including when describing jumping spiders, [2] [3] lacewings, [42] ant-mimicking aphids, [43] hemipteran bugs mimicking chrysomelid beetles, [44] bird-dropping spiders, [4] orchid mantises, [4] cichlid fish, [45] [46] and the zone-tailed hawk which flies with vultures, enabling it to approach terrestrial prey. [47] [48] These animals have evolved to deceive their prey by appearing as other prey, or like angler fish [47] and snapping turtles [47] lure the prey by appearing as the prey's prey.

Notes

  1. ↑ Pasteur (1982) describes the term as redundant and states that there are many different forms of aggressive mimicry. The term was used earlier by Bates (1862) and Kirby & Spence (1823).
  2. ↑ For an overview of mimicry in plants, see Wiens, 1978. Some plants mimic inanimate objects such as stones, as in Mesembryanthemum , clearly not aggressive. Some entomophilous plants such as the bee orchid attract pollinators by mimicking female insects, the males attempting to mate with the flower, but the duped insects are not eaten, and the mimicry is thus not aggressive. In Vavilovian mimicry, weeds of crops have evolved seeds similar to those of the crop, enabling the weed to be propagated by being planted as crop seed. But again, this cannot be called aggressive. [22] [23]
  3. ↑ The only theoretical possibilities outside this scope are a) a two species system with a model-mimic - perhaps a predator pretending to be a sleeping or dead predator (this stretches the usual scope of mimicry somewhat); and b) a cannibalistic species where a cannibalistic organism individual mimics another species.

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<span class="mw-page-title-main">Symbiosis</span> Close, long-term biological interaction between distinct organisms (usually species)

Symbiosis is any type of a close and long-term biological interaction, between two organisms of different species. The two organisms, termed symbionts, can be either in a mutualistic, a commensalistic, or a parasitic relationship. In 1879, Heinrich Anton de Bary defined symbiosis as "the living together of unlike organisms".

<span class="mw-page-title-main">Mimicry</span> Evolutionary strategy

In evolutionary biology, mimicry is an evolved resemblance between an organism and another object, often an organism of another species. Mimicry may evolve between different species, or between individuals of the same species. In the simplest case, as in Batesian mimicry, a mimic resembles a model, so as to deceive a dupe, all three being of different species. A Batesian mimic, such as a hoverfly, is harmless, while its model, such as a wasp, is harmful, and is avoided by the dupe, such as an insect-eating bird. Birds hunt by sight, so the mimicry in that case is visual, but in other cases mimicry may make use of any of the senses. Most types of mimicry, including Batesian, are deceptive, as the mimics are not harmful, but Müllerian mimicry, where different harmful species resemble each other, is honest, as when species of wasps and of bees all have genuinely aposematic warning coloration. More complex types may be bipolar, involving only two species, such as when the model and the dupe are the same; this occurs for example in aggressive mimicry, where a predator in wolf-in-sheep's-clothing style resembles its prey, allowing it to hunt undetected. Mimicry is not limited to animals; in Pouyannian mimicry, an orchid flower is the mimic, resembling a female bee, its model; the dupe is the male bee of the same species, which tries to copulate with the flower, enabling it to transfer pollen, so the mimicry is again bipolar. In automimicry, another bipolar system, model and mimic are the same, as when blue lycaenid butterflies have 'tails' or eyespots on their wings that mimic their own heads, misdirecting predator dupes to strike harmlessly. Many other types of mimicry exist.

<span class="mw-page-title-main">False cleanerfish</span> Species of fish

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<span class="mw-page-title-main">Batesian mimicry</span> Bluffing imitation of a strongly defended species

Batesian mimicry is a form of mimicry where a harmless species has evolved to imitate the warning signals of a harmful species directed at a predator of them both. It is named after the English naturalist Henry Walter Bates, who worked on butterflies in the rainforests of Brazil.

<span class="mw-page-title-main">Anti-predator adaptation</span> Defensive feature of prey for selective advantage

Anti-predator adaptations are mechanisms developed through evolution that assist prey organisms in their constant struggle against predators. 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.

<span class="mw-page-title-main">Müllerian mimicry</span> Mutually beneficial mimicry of strongly defended species

Müllerian mimicry is a natural phenomenon in which two or more well-defended species, often foul-tasting and sharing common predators, have come to mimic each other's honest warning signals, to their mutual benefit. The benefit to Müllerian mimics is that predators only need one unpleasant encounter with one member of a set of Müllerian mimics, and thereafter avoid all similar coloration, whether or not it belongs to the same species as the initial encounter. It is named after the German naturalist Fritz Müller, who first proposed the concept in 1878, supporting his theory with the first mathematical model of frequency-dependent selection, one of the first such models anywhere in biology.

<span class="mw-page-title-main">Aposematism</span> Honest signalling of an animals powerful defences

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A wolf in sheep's clothing is an idiom from Jesus's Sermon on the Mount as narrated in the Gospel of Matthew. It warns against individuals who play a duplicitous role. The gospel regards such individuals as dangerous.

<span class="mw-page-title-main">Ant mimicry</span> Animals that resemble ants

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Ambush predators or sit-and-wait predators are carnivorous animals that capture their prey via stealth, luring or by strategies utilizing an element of surprise. Unlike pursuit predators, who chase to capture prey using sheer speed or endurance, ambush predators avoid fatigue by staying in concealment, waiting patiently for the prey to get near, before launching a sudden overwhelming attack that quickly incapacitates and captures the prey.

<span class="mw-page-title-main">Gilbertian mimicry</span>

In evolutionary biology, Gilbertian mimicry is a rare type of mimicry in plants involving only two species, a host or prey animal which is the mimic, and its parasite or predator, which is both the model for the mimicry, and the dupe that is deceived by it. The mechanism provides a measure of protection for the mimic, as parasites and predators rarely attack their own species.

<span class="mw-page-title-main">Emsleyan mimicry</span> Mimicry of a less deadly species

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<span class="mw-page-title-main">Chemical mimicry</span> Biological mimicry using chemicals

Chemical mimicry is a type of biological mimicry involving the use of chemicals to dupe an operator.

<span class="mw-page-title-main">Cleaning symbiosis</span> Mutually beneficial association between individuals of two species

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<span class="mw-page-title-main">Mimicry in plants</span>

In evolutionary biology, mimicry in plants is where a plant evolves to resemble another organism physically or chemically. Mimicry in plants has been studied far less than mimicry in animals. It may provide protection against herbivory, or may deceptively encourage mutualists, like pollinators, to provide a service without offering a reward in return.

Locomotor mimicry is a subtype of Batesian mimicry in which animals avoid predation by mimicking the movements of another species phylogenetically separated. This can be in the form of mimicking a less desirable species or by mimicking the predator itself. Animals can show similarity in swimming, walking, or flying of their model animals.

In evolutionary biology, mimicry in vertebrates is mimicry by a vertebrate of some model, deceiving some other animal, the dupe. Mimicry differs from camouflage as it is meant to be seen, while animals use camouflage to remain hidden. Visual, olfactory, auditory, biochemical, and behavioral modalities of mimicry have been documented in vertebrates.

<i>Chlorobalius</i> Species of cricket-like animal

Chlorobalius is a monotypic genus of Australian bush crickets (katydids) in the tribe Terpandrini containing the single species Chlorobalius leucoviridis, sometimes known as the spotted predatory katydid. C. leucoviridis is a predator and is an acoustic aggressive mimic of cicadas; by imitating the sounds and movements made by female cicadas, it lures male cicadas to within its reach and then eats them.

References

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  3. 1 2 Heneberg, Petr; Perger, Robert; Rubio, Gonzalo D. (2018). "A wolf in sheep's clothing: The description of a fly resembling jumping spider of the genus Scoturius Simon, 1901 (Araneae: Salticidae: Huriini)". PLOS ONE. 13 (1): e0190582. Bibcode:2018PLoSO..1390582P. doi: 10.1371/journal.pone.0190582 . PMC   5783343 . PMID   29364905.
  4. 1 2 3 Levine, Timothy R. (2014). Encyclopedia of Deception. SAGE Publications. p. 675. ISBN   978-1-4833-8898-4. In aggressive mimicry, the predator is 'a wolf in sheep's clothing'. Mimicry is used to appear harmless or even attractive to lure its prey.
  5. ↑ Wickler, Wolfgang (1965). "Mimicry and the evolution of animal communication". Nature . 208 (5010): 519–21. Bibcode:1965Natur.208..519W. doi:10.1038/208519a0. S2CID   37649827.
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  41. ↑ See here for a photo.
  42. ↑ Eisner, T.; Hicks, K.; Eisner, M.; Robson, D. S. (1978). ""Wolf-in-Sheep's-Clothing" Strategy of a Predaceous Insect Larva". Science. 199 (4330): 790–794. Bibcode:1978Sci...199..790E. doi:10.1126/science.199.4330.790. JSTOR   1745242. PMID   17836295. S2CID   11558335.
  43. ↑ Salazar, Adrián; Fürstenau, Benjamin; Quero, Carmen; Pérez-Hidalgo, Nicolás; Carazo, Pau; Font, Enrique; Martínez-Torres, David (2015). "Aggressive mimicry coexists with mutualism in an aphid". Proceedings of the National Academy of Sciences. 112 (4): 1101–1106. Bibcode:2015PNAS..112.1101S. doi: 10.1073/pnas.1414061112 . PMC   4313836 . PMID   25583474. The dual strategy developed by the aphid P. cimiciformis outlines a complex evolutionary scenario. On the one hand, the round morph and the ants, engaged in a trophobiotic relationship, should be subjected to the conflicts of interest typical of mutualism, with selection driving each partner to maximize its benefit by giving the least of its own energy and resources. On the other hand, the flat morph and the ants can be expected to be engaged in an arms race, with selection favoring improved deceiving abilities in the aphid and increasingly finer discrimination abilities to detect noncolony members in the ants. ... We believe that, beyond providing an unusual case of a 'wolf in sheep's clothing,' this system opens up a host of interesting and potentially novel questions about the evolution of cooperation and exploitation.
  44. ↑ Jolivet, P.; Petitpierre, E.; Hsiao, T.H. (2012). Biology of Chrysomelidae. Springer. p. 276. ISBN   978-94-009-3105-3.
  45. ↑ "Wolf in Sheep's Clothing: How Scale-Eating Cichlid Fish Trick Their Prey". University of Basel. 23 September 2015. Retrieved 2 February 2018. The results reveal the complexity of this so-called 'aggressive mimicry': the scale-eaters are actually imitating several blue and white striped species at once, in order to trick an entire natural community. The leader of the study, Prof. Walter Salzburger, summarizes the findings thus: 'The scale-eater pursues the strategy of a wolf that dresses up as a sheep only to then go for goats and cows.'
  46. ↑ Boileau, Nicolas; Cortesi, Fabio; Egger, Bernd; Muschick, Moritz; Indermaur, Adrian; Theis, Anya; Büscher, Heinz H.; Salzburger, Walter (2015). "A complex mode of aggressive mimicry in a scale-eating cichlid fish". Biology Letters. 11 (9): 20150521. doi:10.1098/rsbl.2015.0521. PMC   4614428 . PMID   26399975.
  47. 1 2 3 Smith, William John (2009). The Behavior of Communicating: an ethological approach. Harvard University Press. p. 381. ISBN   978-0-674-04379-4. Others rely on the technique adopted by a wolf in sheep's clothing—they mimic a harmless species. ... Other predators even mimic their prey's prey: angler fish (Lophiiformes) and alligator snapping turtles Macroclemys temmincki can wriggle fleshy outgrowths of their fins or tongues and attract small predatory fish close to their mouths.
  48. ↑ Stolesen, Scott H.; Sadoti, Giancarlo (2010). "Chapter 17: Zone-tailed Hawk (Buteo albonotatus)". In Cartron, Jean-Luc E. (ed.). Raptors of New Mexico (PDF). University of New Mexico Press. pp. 297–313. Willis (1963) postulated that the Zone-tail's strong physical resemblance to the Turkey Vulture may be a form of aggressive mimicry, which allows the hawk to closely approach potential prey that are habituated to the presence of the ubiquitous vultures (but see Mueller 1972). Snyder and Snyder (1991) report the capture success rate of Zone-tails in Arizona was significantly greater when soaring with vultures (30% successful) than when flying alone (7% successful), based on a sample of 55 observations. It is noteworthy that once a Zone-tail flying among vultures has spotted potential prey (as indicated by its locking its gaze on one spot on the ground), it often continues soaring past until well beyond the intended victim, often beyond some cover, at which point it stoops back at an acute angle in a surprise attack (Snyder and Glinski 1988; SHS).

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