منابع مشابه
Radiation of the polymorphic Little Devil poison frog (Oophaga sylvatica) in Ecuador
Some South American poison frogs (Dendrobatidae) are chemically defended and use bright aposematic colors to warn potential predators of their unpalatability. Aposematic signals are often frequency-dependent where individuals deviating from a local model are at a higher risk of predation. However, extreme diversity in the aposematic signal has been documented in poison frogs, especially in Ooph...
متن کاملRadiation and hybridization of the Little Devil poison frog (Oophaga sylvatica) in Ecuador
Geographic variation of color pattern in the South American poison frogs (Dendrobatidae) is an intriguing evolutionary phenomenon. These chemically defended anurans use bright aposematic colors to warn potential predators of their unpalatibility. However, aposematic signals are frequency-dependent and individuals deviating from a local model are at a higher risk of predation. The well-known exa...
متن کاملAnt And Mite Diversity Drives Toxin Variation In The Little Devil Poison Frog 1 2
1 Center for Systems Biology, Harvard University, Cambridge, MA 02138, USA 6 2 Small Molecule Mass Spectrometry Facility, Harvard University, Cambridge, MA 02138, USA 7 3 Cambridge Rindge and Latin High School, Cambridge, MA 02138, USA 8 4 Centro Jambatu de Investigación y Conservación de Anfibios, Fundación Otonga, Geovanni 9 Farina 566 y Baltra, San Rafael, Quito, Ecuador 10 5 Ikiam, Universi...
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cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
The Tasmanian Devil and Devil Facial Tumour Disease
The global extirpation of the world’s apex predator fauna is consistently highlighting their important functional role in preserving biodiversity and maintaining ecosystem resilience. Apex predator declines and extinctions are promoting more invasive and homogenised ecosystem states, linked with secondary species extinctions, changes to community composition, and redefined carnivore guilds. In ...
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ژورنال
عنوان ژورنال: Nature
سال: 2000
ISSN: 0028-0836,1476-4687
DOI: 10.1038/35018190