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Evolution of melanin pigment loss in subterranean amphipods and isopods (CROSBI ID 654606)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Fong, Daniel W. ; Bilandžija, Helena ; Laslo, Mara Evolution of melanin pigment loss in subterranean amphipods and isopods // The Crustacean Society and International Association of Astacology 2015 Mid-Year Meeting Abstracts. 2015. str. 27-27

Podaci o odgovornosti

Fong, Daniel W. ; Bilandžija, Helena ; Laslo, Mara

engleski

Evolution of melanin pigment loss in subterranean amphipods and isopods

Melanin synthesis was inhibited by an inability to convert L-tyrosine to L-DOPA, the first step in the pathway, in cave and surface populations of the gammarid amphipod, Gammarus minus, and in five crangonyctid species of Stygobromus from different subterranean habitats plus two surface species of Crangonyx. Melanin was synthesized as part of the innate immune response during wound healing in all of the species, indicating initial repression and subsequent expression, when subjected to appropriate stimuli, of genes controlling enzyme(s) catalyzing this step. The results suggest melanin pigment loss in cave amphipods evolved because selection favored repressed gene expression(s) at this step, thus pigment loss may have occurred prior to colonization of the subterranean habitat. Similar experiments conducted on isopods, one surface and four subterranean asellid species of Caecidotea and one subterranean cirolanid, Cirolanides texensis, however, yielded different results, indicating evolution of melanin pigment loss in subterranean species may result from different mechanisms in different taxonomic groups. We present some initial results of similar experiments on additional taxa from a phylogenetic perspective.

melanin synthesis, cave adapted animals, pigment loss

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Podaci o prilogu

27-27.

2015.

objavljeno

Podaci o matičnoj publikaciji

The Crustacean Society and International Association of Astacology 2015 Mid-Year Meeting Abstracts

Podaci o skupu

The Crustacean Society and International Association of Astacology 2015 Mid-Year Meeting

predavanje

19.07.2015-23.07.2015

Sydney, Australija

Povezanost rada

Biologija