منابع مشابه
Genetic structure in a montane ranid frog: restricted gene flow and nuclear-mitochondrial discordance.
There is substantial debate over the criteria that should be used to group populations of a species into distinct units for conservation (e.g. evolutionarily significant units, management units, distinct population segments). However, in practice molecular genetic differentiation is often the only or main criterion used to identify such units. Most genetic studies attempting to define conservat...
متن کاملVicariance and Its Impact on the Molecular Ecology of a Chinese Ranid Frog Species-Complex (Odorrana schmackeri, Ranidae)
Paleogeological events and Pleistocene climatic fluctuations have had profound influences on the genetic patterns and phylogeographic structure of species in southern China. In this study, we investigated the population genetic structure and Phylogeography of the Odorrana schmackeri species complex, mountain stream-dwelling odorous frogs, endemic to southern China. We obtained mitochondrial seq...
متن کاملNew records of trematode parasites (digenea) in the banded frog (Rana camerani) and marsh frog (Rana ridibunda ridibunda) (Anura: Ranidae), from southwest of Iran
Fourteen adult frogs including six banded frog, Rana camerani and eight marsh frog, Rana ridibunda ridibunda were collected from two sites of Chahar Mahal-o-Bakhtiari province at the southwest of Iran and then were examined for helminth parasites. Only Dolichosaccus rastellus (50%) was found in R. camerani, Skrjabinoeces similis (50%) and metacercarian cysts of Codonocephalus urniger (12....
متن کاملPhosphoprotein phosphatase, a new enzyme from the frog egg.
In the nutrition of the young, the r&e of phosphoproteins is, without doubt, an important one. As casein in milk, or as the yellow yolk of many vertebrate and invertebrate eggs, phosphoprotein occurs in substantial quantities. In the frog egg, for example, the yolk platelets occupy almost half the volume of the cell. According to McClendon (5), the yolk of the frog egg consists of phosphoprotei...
متن کاملAscending thalamic projections from the obex region in ranid frogs.
Amphibian forebrains display few obvious specializations and have frequently served as models of a primitive tetrapod condition from which more specialized sauropsid and theropsid forebrains have been derived. This approach to tetrapod forebrain evolution has yet to be fully exploited, as our knowledge of amphibian forebrain pathways is embryonic. Most experimental studies have focused on prima...
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ژورنال
عنوان ژورنال: Monitore Zoologico Italiano. Supplemento
سال: 1978
ISSN: 0374-9444
DOI: 10.1080/03749444.1978.10736577