Poison frogs
نویسندگان
چکیده
Stynoski et al. introduce the dendrobatids, a charismatic group of frogs known for their colourful and often poisonous skin.
منابع مشابه
Convergent evolution of chemical defense in poison frogs and arthropod prey between Madagascar and the Neotropics.
With few exceptions, aposematically colored poison frogs sequester defensive alkaloids, unchanged, from dietary arthropods. In the Neotropics, myrmicine and formicine ants and the siphonotid millipede Rhinotus purpureus are dietary sources for alkaloids in dendrobatid poison frogs, yet the arthropod sources for Mantella poison frogs in Madagascar remained unknown. We report GC-MS analyses of ex...
متن کاملOribatid mites as a major dietary source for alkaloids in poison frogs.
Alkaloids in the skin glands of poison frogs serve as a chemical defense against predation, and almost all of these alkaloids appear to be sequestered from dietary arthropods. Certain alkaloid-containing ants have been considered the primary dietary source, but dietary sources for the majority of alkaloids remain unknown. Herein we report the presence of approximately 80 alkaloids from extracts...
متن کاملPoison frogs rely on experience to find the way home in the rainforest
Among vertebrates, comparable spatial learning abilities have been found in birds, mammals, turtles and fishes, but virtually nothing is known about such abilities in amphibians. Overall, amphibians are the most sedentary vertebrates, but poison frogs (Dendrobatidae) routinely shuttle tadpoles from terrestrial territories to dispersed aquatic deposition sites. We hypothesize that dendrobatid fr...
متن کاملThe palatability of Neotropical poison frogs in predator-prey systems: do alkaloids make the difference?
Neotropical poison frogs sequester alkaloid-based chemical defenses from their diet, which seem to repel invertebrate predators after contact. In this study, we tested the reaction of predatory ants toward skin secretions of captive-bred poison frogs without alkaloids. Although the secretions had a smell and taste similar to those of wild-caught frogs, the ants did not avoid them, but actually ...
متن کاملOntogenetic scaling of poison glands in a dendrobatid poison frog
The nature of chemical defenses in poison frogs has been explored in a variety of species, and most studies focus on the types of chemical defenses and their sources. The defensive compounds of frogs are stored in dermal granular glands that have been described for several species that are chemically protected from predators and/or microorganisms. Gland ultrastructure is known for some species ...
متن کاملSex-related differences in alkaloid chemical defenses of the dendrobatid frog Oophaga pumilio from Cayo Nancy, Bocas del Toro, Panama.
Poison frogs contain an alkaloid-based chemical defense that is sequestered directly from a diet of alkaloid-containing arthropods. Geographic and temporal variation in alkaloid defense is common in poison frogs and is generally attributed to differences in the availability of alkaloid-containing arthropods. Variable chemical defense in poison frogs may have important consequences for predator-...
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ورودعنوان ژورنال:
- Current Biology
دوره 25 شماره
صفحات -
تاریخ انتشار 2015