Papilio dardanus | |
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both male P. d. antinorii, Ethiopia | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Lepidoptera |
Family: | Papilionidae |
Genus: | Papilio |
Species: | P. dardanus |
Binomial name | |
Papilio dardanus | |
Subspecies | |
See text | |
Synonyms | |
List
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Papilio dardanus , the Saharan swallowtail,African swallowtail, mocker swallowtail or flying handkerchief, is a species of butterfly in the family Papilionidae (the swallowtails). The species is broadly distributed throughout Sub-Saharan Africa. [2] The British entomologist E. B. Poulton described it as "the most interesting butterfly in the world". [3]
Molecular studies have provided evidence that this species' closest relative is Papilio phorcas , with Papilio constantinus being the next closest (see images below). [4] It is a member of the Papilio genus of which Papilio appalachiensis and Papilio xuthus are also members.
Papilio dardanus is the nominal member of the dardanus species group. The members of the clade are:
Listed alphabetically: [5]
The species shows polymorphism in wing appearance, though this is limited to females, which are often given as an example of Batesian mimicry in insects. This female-limited mimicry was first described in 1869 by Roland Trimen. [18] Males have a more or less uniform appearance throughout the species' range, but females come in at least 14 varieties or morphs. [2]
Some female morphs share a very similar pattern of colouration with various species of distasteful butterfly (e.g. from the Danainae, a subfamily of nymphalids), [19] while others have been found that mimic male appearance (andromorphs). The persistence of these various morphs or different types of females may be explained by frequency-dependent selection. Cook et al. suggest that Batesian mimics gain a fitness advantage by avoiding predators, but suffer harassment from males (see sexual conflict), whereas andromorphs (male mimics) are vulnerable to predation but are not harassed by male mating attempts. [20]
Morphs are divided into three general groups based on patterning: the hippocoon group, the cenea group, and the planemoides group. The hippocoon group holds the largest amount of morphs; phenotypes within this group are characterized by four bands of alternating black and color patterns. Within the cenea group patterns are greatly dominated by black coloration and contain small splotches of color. The planemoides group has black bands surrounding the outside of the wing with a large splotch of color through the middle of the wing. This group also contains the female forms that are male-like mimics. Diversity in the wing patterns of each group is seen mostly in the coloration of each organism, while black patterns are generally consistent in each morph. [2]
Phenotypic variation within the female morphs of Papilio dardanus has been found to be controlled at one locus named H that contains at least 11 different alleles. [2] Recent studies have narrowed down the region of H to approximately 24 genes that is centered around the engrailed (en) gene which codes for specific transcription factors. [21] The engrailed site has been found to have non-synonymous mutations throughout individuals in the species which would allow the divergence of each morph. [21] Studies support that the engrailed gene in Papilio dardanus is monophyletic and has only evolved once within the species. [22] Findings also suggest that the many different mimetic alleles in the Papilio dardanus genome are solely from mutations in the species. In other words, alleles did not enter into the genome from genetic transfer from other species. [22]
Different combinations of the alleles at H lead to the variety of forms seen within the species. Genetic crosses of individuals found a general dominance hierarchy within the alleles. [2] Allele combinations also determine not only which morph will be expressed but the actual size of the patterns shown. Each allele is able to either influence a larger or smaller mimetic pattern in an organism. [2]
Such female-limited Batesian mimicry is not unique to this species, even in the genus Papilio . For instance Papilio memnon shows a similar case of polymorphism in females. [23] Similarly, male mimicry has been observed in another insect, a damselfly Ischnura ramburii which also appears to have evolved camouflage to avoid sexual coercion by males. [24]
In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative phenotypes, in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population.
Papilio glaucus, the eastern tiger swallowtail, is a species of butterfly native to eastern North America. It is one of the most familiar butterflies in the eastern United States, ranging north to southern Ontario, Canada, and is common in many different habitats. It flies from spring until fall, during which it produces two to three broods. Adults feed on the nectar of many species of flowers, mostly from those of the families Apocynaceae, Asteraceae, and Fabaceae. P. glaucus has a wingspan measuring 7.9 to 14 cm. The male is yellow with four black "tiger stripes" on each forewing. Females may be either yellow or black, making them dimorphic. The yellow morph is similar to the male, but with a conspicuous band of blue spots along the hindwing, while the dark morph is almost completely black.
Papilio is a genus in the swallowtail butterfly family, Papilionidae, as well as the only representative of the tribe Papilionini. The word papilio is Latin for butterfly.
Swallowtail butterflies are large, colorful butterflies in the family Papilionidae, and include over 550 species. Though the majority are tropical, members of the family inhabit every continent except Antarctica. The family includes the largest butterflies in the world, the birdwing butterflies of the genus Ornithoptera.
Papilio polyxenes, the (eastern) black swallowtail, American swallowtail or parsnip swallowtail, is a butterfly found throughout much of North America. An extremely similar-appearing species, Papilio joanae, occurs in the Ozark Mountains region, but it appears to be closely related to Papilio machaon, rather than P. polyxenes. The species is named after the figure in Greek mythology, Polyxena, who was the youngest daughter of King Priam of Troy. Its caterpillar is called the parsley worm because the caterpillar feeds on parsley.
Frequency-dependent selection is an evolutionary process by which the fitness of a phenotype or genotype depends on the phenotype or genotype composition of a given population.
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.
The viceroy is a North American butterfly. It was long thought to be a Batesian mimic of the monarch butterfly, but since the viceroy is also distasteful to predators, it is now considered a Müllerian mimic instead.
Limenitis arthemis, the red-spotted purple or white admiral, is a North American butterfly species in the cosmopolitan genus Limenitis. It has been studied for its evolution of mimicry, and for the several stable hybrid wing patterns within this nominal species; it is one of the most dramatic examples of hybridization between non-mimetic and mimetic populations.
Papilio polytes, the common Mormon, is a common species of swallowtail butterfly widely distributed across Asia.
Papilio memnon, the great Mormon, is a large butterfly native to southern Asia that belongs to the swallowtail family. It is widely distributed and has thirteen subspecies. The female is polymorphic and with mimetic forms.
Callosamia promethea, commonly known as the promethea silkmoth, is a member of the family Saturniidae, which contains approximately 1,300 species. It is also known as the spicebush silkmoth, which refers to one of the promethea silkmoth's common host plants, spicebush. C. promethea is classified as a silk moth, which stems from its ability to produce silk, which it does in the formation of its cocoon. C. promethea lives in forests in the eastern U.S. and does not damage the trees on which it lives. The species was first described by Dru Drury in 1773.
Papilio constantinus, the Constantine's swallowtail, is a butterfly of the family Papilionidae. It is found in Sub-Saharan Africa.
Papilio cynorta, the mimetic swallowtail or common white banded papilio, is a butterfly of the family Papilionidae. It is found in Africa, including Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, southern Nigeria, Cameroon, Equatorial Guinea, the Democratic Republic of the Congo, Angola, the Republic of the Congo, Uganda, Kenya and Tanzania.
Papilio rex, the regal swallowtail or king papilio, is a butterfly of the family Papilionidae. It is found in Africa. It is a semi-montane and montane forest species. The larvae feed on Teclea tricocarpa, Teclea stuhlmanni, Calodendrum, Citrus, Clausena, Fagara and Toddalia species. In the early morning and late afternoon adults of both sexes descend from the forest canopy to feed from the flowers of Lantana, Impatiens and Bougainvillea. It hilltops on granite outcrops and mud puddles.
Papilio delalandei is a butterfly of the family Papilionidae. It is endemic to Madagascar.
Papilio phorcas, the apple-green swallowtail or green-banded swallowtail, is a butterfly of the family Papilionidae. It is found in Africa.
Many types of polymorphism can be seen in the insect order Lepidoptera. Polymorphism is the appearance of forms or "morphs" differing in color and number of attributes within a single species. In Lepidoptera, polymorphism can be seen not only between individuals in a population but also between the sexes as sexual dimorphism, between geographically separated populations in geographical polymorphism and also between generations flying at different seasons of the year. It also includes the phenomenon of mimicry when mimetic morphs fly alongside non-mimetic morphs in a population of a particular species. Polymorphism occurs both at a specific level with heritable variation in the overall morphological design of individuals as well as in certain specific morphological or physiological traits within a species.
Dazzled and Deceived: Mimicry and Camouflage is a 2009 book on camouflage and mimicry, in nature and military usage, by the science writer and journalist Peter Forbes. It covers the history of these topics from the 19th century onwards, describing the discoveries of Henry Walter Bates, Alfred Russel Wallace and Fritz Müller, especially their studies of butterflies in the Amazon. The narrative also covers 20th-century military camouflage, begun by the painter Abbot Thayer who advocated disruptive coloration and countershading and continued in the First World War by the zoologist John Graham Kerr and the marine artist Norman Wilkinson, who developed dazzle camouflage. In the Second World War, the leading expert was Hugh Cott, who advised the British army on camouflage in the Western Desert.