alexa The inheritance of female colour morphs in the damselfly ceriagrion tenellum (Odonata, coenagrionidae)
General Science

General Science

Entomology, Ornithology & Herpetology: Current Research

Author(s): Andres JA, Cordero A

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Abstract Female-limited polychromatism is found in many species of Odonata. In Ceriagrion tenellum (Coenagrionidae) one of the morphs is red-coloured, like the conspecific male (androchrome, erythrogastrum morph), whereas most females are red and black (typica morph) or black (melanogastrum morph). Virgin females of this species were mated in the laboratory and their progeny reared (13 crosses). Results of these crosses indicate that colour morphs are controlled by one autosomal locus with female-limited expression. A second laboratory generation (two crosses) confirmed this inheritance system. This locus has three alleles (one per phenotype) and a hierarchy of dominance: typica > melanogastrum > erythrogastrum. The dominance relationships of andro/gynochrome alleles in polymorphic damselflies so far studied are discussed. The frequencies of female morphs in natural populations are highly variable, but in all cases typica females are the commonest.
This article was published in Heredity (Edinb) and referenced in Entomology, Ornithology & Herpetology: Current Research

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