Characterization of olfactory receptor organs inXenopus laevis daudin

Histogenesis of lymphoid organs in larvae of the South African clawed toad, Xenopus laevis (Daudin).

Before embarking on a study of the lymphoid system of an amphibian larva, it is necessary to realize that lymphoid tissue may occur in many organs of the body and that in all immature vertebrates and in adult poikilotherms separation of lymphoid tissue from myeloid tissue is incomplete (Yoffey, 1960). Jordan (1938) reviewed the early work on the haemopoietic tissues of Amphibia. Cooper (1967tf,...

Diet of feral Xenopus laevis (Daudin) in South Wales, U.K

African clawed frogs (Xenopus laevis) in a South Wales pond ate a wide variety and size range of prey. Zoobenthos and zooplankton made the greatest contribution to diets, both numerically and by weight. Terrestrial invertebrates made up a small proportion of the diet numerically but a large proportion of the diet mass during the spring and summer. Nektonic prey were present throughout the year ...

Nitrogen excretion in the tadpoles of Xenopus laevis Daudin.

Invasive Populations of Xenopus Laevis (daudin) in Chile

Invasive populations of Xenopus laevis are known from the UK, USA and Chile, although there is poor documentation of the latter. Currently, four administrative Regions in Chile are reported as having established populations. Fieldwork during the austral winter of 2001 was conducted in order to assess the density and diet of X. laevis populations in two localities. At one site, fewer than 30 adu...

The lateral line system at metamorphosis in Xenopus laevis (Daudin).

Marked changes in the anatomy of the lateral line system occur during the metamorphosis of Xenopus. The distribution of rows differs in larva and adult and the orientation and number of organs are modified at metamorphosis. Larval plaques are functional, as shown by recording from their nerves. Two classes of cells with polarized cilia are present in the tadpole well before the orientation of i...