Results 31 to 40 of about 64,126 (157)

Niche divergence along a fine‐scale ecological gradient in sympatric color morphs of a coral reef fish

Ecosphere, 2018
Color polymorphisms offer unique opportunities for testing the role of ecological adaptation and natural selection in the origin of species. However, the ecological conditions that facilitate the coexistence and speciation of color morphs in nature ...
Jonathan L. Whitney, Megan J. Donahue, Stephen A. Karl   +2 more
doaj   +1 more source

A taxonomic revision of the members of the Camponotus lateralis species group (Hymenoptera: Formicidae) from Europe, Asia Minor and Caucasia

Soil Organisms, 2019
A taxonomic revision of the Camponotus lateralis group based on methods of Numeric Morphology-Based Alpha-Taxonomy (NUMOBAT) is presented considering the Palaearctic region west of 46°E.
Bernhard Seifert
doaj   +1 more source

Negative frequency‐dependent selection maintains shell banding polymorphisms in two marine snails (Littorina fabalis and Littorina saxatilis)

Ecology and Evolution, 2021
The presence of shell bands is common in gastropods. Both the marine snails Littorina fabalis and Lttorina saxatilis are polymorphic for this trait. Such polymorphism would be expected to be lost by the action of genetic drift or directional selection ...
Daniel Estévez, Juan Galindo, Emilio Rolán‐Alvarez   +2 more
doaj   +1 more source

Cognition in a Changing World: Red-Headed Gouldian Finches Enter Spatially Unfamiliar Habitats More Readily Than Do Black-Headed Birds

Frontiers in Ecology and Evolution, 2020
Human activities are increasingly confronting animals with unfamiliar environmental conditions. For example, habitat change and loss often lead to habitat fragmentation, which can create barriers of unsuitable and unfamiliar habitat affecting animal ...
Claudia Mettke-Hofmann, Georgina R. Eccles, Georgina R. Eccles, Alison L. Greggor, Emily J. Bethell   +4 more
doaj   +1 more source

No evidence for differential sociosexual behavior and space use in the color morphs of the European common wall lizard (Podarcis muralis)

Ecology and Evolution, 2020
Explaining the evolutionary origin and maintenance of color polymorphisms is a major challenge in evolutionary biology. Such polymorphisms are commonly thought to reflect the existence of alternative behavioral or life‐history strategies under negative ...
Javier Abalos, Guillem Pérez i de Lanuza, Alicia Bartolomé, Océane Liehrmann, Hanna Laakkonen, Fabien Aubret, Tobias Uller, Pau Carazo, Enrique Font   +8 more
doaj   +1 more source

Predation and the maintenance of color polymorphism in a habitat specialist squamate. [PDF]

PLoS ONE, 2012
Multiple studies have addressed the mechanisms maintaining polymorphism within a population. However, several examples exist where species inhabiting diverse habitats exhibit local population-specific polymorphism.
Vincent R Farallo, Michael R J Forstner
doaj   +1 more source

Gudgeon fish with and without genetically determined countershading coexist in heterogeneous littoral environments of an ancient lake

Ecology and Evolution, 2021
Countershading, characterized by a darker dorsal surface and lighter ventral surface, is common among many animals. This dorsoventral pigment polarity is often thought to be adaptive coloration for camouflage.
Tomoyuki Kokita, Kohtaro Ueno, Yo Y. Yamasaki, Masanari Matsuda, Ryoichi Tabata, Atsushi J. Nagano, Tappei Mishina, Katsutoshi Watanabe   +7 more
doaj   +1 more source

Mate Choice Contributes to the Maintenance of Shell Color Polymorphism in a Marine Snail via Frequency-Dependent Sexual Selection

Frontiers in Marine Science, 2020
Natural color polymorphisms are widespread across animal species and usually have a simple genetic basis. This makes them an ideal system to study the evolutionary mechanisms responsible for maintaining biodiversity. In some populations of the intertidal
Daniel Estévez, Daniel Estévez, Eugene Kozminsky, Antonio Carvajal-Rodríguez, Armando Caballero, Rui Faria, Juan Galindo, Emilio Rolán-Alvarez   +7 more
doaj   +1 more source

The heterozygote superiority hypothesis for polymorphic color vision is not supported by long-term fitness data from wild neotropical monkeys. [PDF]

PLoS ONE, 2014
The leading explanatory model for the widespread occurrence of color vision polymorphism in Neotropical primates is the heterozygote superiority hypothesis, which postulates that trichromatic individuals have a fitness advantage over other phenotypes ...
Linda M Fedigan, Amanda D Melin, John F Addicott, Shoji Kawamura   +3 more
doaj   +1 more source

Color plumage polymorphism and predator mimicry in brood parasites [PDF]

Frontiers in Zoology, 2013
Plumage polymorphism may evolve during coevolution between brood parasites and their hosts if rare morph(s), by contravening host search image, evade host recognition systems better than common variant(s). Females of the parasitic common cuckoo (Cuculus canorus) are a classic example of discrete color polymorphism: gray females supposedly mimic the ...
Trnka, Alfréd, Grim, Tomáš
openaire   +2 more sources