aThere are two treefrogs considered "sibling species". One is a diploid (normal) form; the other is a tetraploid, with four sets of chromosomes, rather than two. The only other way to tell tham apart is by the call. If you have preserved specimens and cannot karyotype them, you cannot...
Are Frogs Injurious Species?John Platt
But none of this can answer a fundamental question about dinosaurs' appearance: What color were they? In everything from movies to play sets, dinosaurs appear in shades of gray, brown and green. But it's just as likely that dinosaurs had the bright coloring of some frogs, snakes and birds...
Darwin provided two definitions of sexual selection: inOrigin of Species(1859)48, his first definition was “Sexual selection… depends, not on a struggle for existence, but on a struggle between the males for possession of the females; the result is not death to the unsuccessful competitor, b...
Chris C Anderson
The keeping of animals as pets or companions has a history extending at least 17,000 years [45], although in recent decades the trading and keeping of both wild and domesticated species has increased dramatically to include at least 13,000, almost exclusively exotic (wild, non-native, non-tr...
Patterns of second-to-fourth digit length ratios (2D: 4D) in two species of frogs and two species of lizards at La Selva. Costa Rica Anat Rec. 2012;295:597–603. Article Google Scholar Wright AN, Kennedy-Gold SR, Naylor ER, Screen RM, Piantoni C, Higham TE. Clinging performance on...
Maladaptive traits in invasive species: in Australia, cane toads are more vulnerable to predatory ants than are native frogs 喜欢 0 阅读量: 19 作者: Georgia Ward-Fear,Gregory P. Brown,Matthew J. Greenlees,Richard Shine 摘要: 1. If a species is translocated outside its native range, some ...
It is therefore highly interesting that this is one of only the three amphibians (among the 97 species in the country) that had a local name (the other two are the highly aberrant rain frogs of the genus Breviceps, and the clawed frogs of the genus Xenopus). Overall, our results on ...
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