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Ongoing invasions of the African clawed frog, Xenopus laevis: a global review
X. laevis is a cryptic invasive species that is likely to increase its invasive distribution, through new introductions and by the spread of ongoing invasions, and many more invasive populations are likely to exist than are currently recognised. Expand
Freshwater paths across the ocean : molecular phylogeny of the frog Ptychadena newtoni gives insights into amphibian colonization of oceanic islands
A synergy of rafting, favourable surface currents and a reduction in salinity of surface waters could allow freshwater paths to open far enough to enable continental flora and fauna to reach these and other isolated oceanic islands. Expand
Field Guide to Amphibians of the Eastern Arc Mountains and Coastal Forests of Tanzania and Kenya
The region has two distinct habitats the Coastal Forests and the Eastern Arc Mountains. Together, they harbor at least 1,500 plant species found nowhere else, as well as unique mammals, birds,… Expand
Diet of feral Xenopus laevis (Daudin) in South Wales, U.K.
- G. Measey
- 1 November 1998
Mean sizes of daphnids and cyclopods were consistently larger in frog stomach contents than in the water column, indicating that predation on zooplankton by Xenopus laevis is size-selective. Expand
Ancient forest fragmentation or recent radiation? Testing refugial speciation models in chameleons within an African biodiversity hotspot
The biogeographic patterns associated with Kinyongia are the result of long evolutionary histories in isolation, and the phylogenetic signal is influenced by an unusually low number of extant lineages with long branch lengths, which is probably due to the retention of palaeoendemic lineages. Expand
Invasive populations of Xenopus laevis (Daudin) in Chile
Stomach contents of a sub-sample of animals revealed a diet consisting primarily of zoobenthic and zooplanktonic components, and significant bias in the sex ratio of animals caught at each site suggests that the populations of X. laevis may be even larger. Expand
Dispersal to or from an African biodiversity hotspot?
Latitudinal expansion occurred early in the evolutionary history of A. xenodactyloides, which may indicate that physiological adaptation facilitated its wide geographic distribution, and is compared with contrasting hypotheses of latitudinal range expansion using bayes factors. Expand
Morphology, ornaments and performance in two chameleon ecomorphs: is the casque bigger than the bite?
From measurements of ornamental and non-ornamental morphological characters and bite force in 105 chameleons, it is found that bite force is significantly related to head size and is best predicted by head width, a finding commensurate with the common framework for species radiations. Expand
Historical perspectives on global exports and research of African clawed frogs (Xenopus laevis)
Trade in live animals has been associated with populations of invasive species as well as the spread of disease. The African clawed frog, Xenopus laevis, was exported from its native region of… Expand
Surveying biodiversity of soil herpetofauna: towards a standard quantitative methodology
- G. Measey
- 1 November 2006
Results of 30 quantitative and 52 semi-quantitative surveys in nine regions of three continents show that these are infrequently encountered, whereas dedicated subterranean burrowers can be found at high densities, suggesting that a two tier sampling approach may be most appropriate, with superficial excavations in a large quadrat in addition to a smaller deeper subsample. Expand