نتایج جستجو برای: parrot cichlid
تعداد نتایج: 2978 فیلتر نتایج به سال:
One of the most compelling features of the cichlid fishes of the African Great Lakes is the seemingly endless diversity of male coloration. Colour diversification has been implicated as an important factor driving cichlid speciation. Colour has also been central to cichlid taxonomy and, thus, to our concept of species diversity. We undertook a phylogeographical examination of several allopatric...
Ted Chiang’s short story, “The Great Silence”, takes the perspective of a parrot living in Rio Abajo forest Puerto Rico, sharing its habitat with Arecibo Observatory. The story first appeared as textual component video installation by Allora and Calzadilla, piece that emphasizes entanglement massive structure telescope). parrot-narrator wonders why humans demonstrate such commitment to possibil...
The cichlid family features some of the most spectacular examples of adaptive radiation. Evolutionary studies have highlighted the importance of both trophic adaptation and sexual selection in cichlid speciation. However, it is poorly understood what processes drive the composition and diversity of local cichlid species assemblages on relatively short, ecological timescales. Here, we investigat...
Threatened species managers are often required to make swift decisions in the face of considerable uncertainty. We tested a structured approach for evaluating conservation options critically endangered orange-bellied parrot. The Orange-bellied Parrot Recovery Team provides advice government agencies inform allocation limited number captive-bred birds different release scenarios. Using expert el...
12 benthic-limnetic axis and most populations are also color-polymorphic. The most comprehensive project focuses on the gold/dark color polymorphism in the Midas cichlid species complex (Amphilophus citrinellus spp.). Using a comparative approach that bases on extensive field collections of Midas cichlids, a substantial degree of ecological differentiation between color morphs is revealed. The ...
BACKGROUND Illegal trade in rare wildlife species is a major threat to many parrot species around the world. Wildlife forensics plays an important role in the preservation of endangered or threatened wildlife species. Identification of illegally harvested or traded animals through DNA techniques is one of the many methods used during forensic investigations. Natural populations of the South Afr...
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