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Systematics of the Tawny-bellied seedeater (Sporophila Hypoxantha): II: taxonomy and evolutionary implications of the existence of a new tawny morphSistemática de Sporophila Hypoxantha: II: taxonomía e implicancias evolutivas de la existencia de una nueva forma en Sporophila
(Cooper Ornithological Society, 2011-08)
The capuchinos, a subset of the genus Sporophila, represent a radiation of seedeaters characterized by little genetic differentiation, virtually no change in bill and body shape, marked plumage differences on a common ...
Genetic variability, phylogenetic relationships and gene flow in Triatoma infestans dark morphs from the Argentinean Chaco
(Elsevier Science, 2011-07)
The recent discovery of sylvatic populations of Triatoma infestans outside the Andean Valleys of Bolivia prompted an evolutionary question about the putative ancestral area of origin and dispersal of the species, and an ...
Visceral colouration of Eupemphix nattereri (Anura: Leiuperidae): effects of NDP-α-melanocyte stimulating hormone
(2013-08-02)
Amphibians have melanin-containing cells in visceral organs that are similar to pigmentary cells from the epidermis. Both of them are derived from the ectodermal neural crest. Epidermal cells respond to α-melanocyte ...
Visceral colouration of Eupemphix nattereri (Anura: Leiuperidae): effects of NDP-α-melanocyte stimulating hormone
(2013-08-02)
Amphibians have melanin-containing cells in visceral organs that are similar to pigmentary cells from the epidermis. Both of them are derived from the ectodermal neural crest. Epidermal cells respond to α-melanocyte ...
Conspecific and predator perception of the Red Oophaga pumilio Morph from the Central Caribbean of Costa Rica
(2020-11-04)
Strawberry Poison Frogs (Oophaga pumilio) are common members of leaf litter lowland communities in Central America and exhibit several color morphs throughout their distribution. Color plays a determinant role during intra- ...
Cellular and ultrastructural characterization of the grey-morph phenotype in southern right whales (Eubalaena australis)
(Public Library of Science, 2017-02)
Southern right whales (SRWs, Eubalena australis) are polymorphic for an X-linked pigmentation pattern known as grey morphism. Most SRWs have completely black skin with white patches on their bellies and occasionally on ...
Fruit color and contrast in seasonal habitats - a case study from a cerrado savanna
(2013-09-01)
Communication contributes to mediate the interactions between plants and the animals that disperse their genes. As yet, seasonal patterns in plant-animal communication are unknown, even though many habitats display pronounced ...
Fruit color and contrast in seasonal habitats - a case study from a cerrado savanna
(2013-09-01)
Communication contributes to mediate the interactions between plants and the animals that disperse their genes. As yet, seasonal patterns in plant-animal communication are unknown, even though many habitats display pronounced ...