Further observations on the nervous system of the American Leopard Frog (Rana Pipiens) compared with that of the European frogs (Rana esculenta and Rana temporaria)

Histology of the oviduct of the leopard frog, Rana pipiens.

Two sex-linked loci in the leopard frog, Rana pipiens.

Crosses involving one heterozygous parent were performed to test the inheritance of enzymes in the leopard frog, Rana pipiens. After metamorphosis, offspring were sexed and tissue extracts from them were analyzed by gel electrophoresis. Enzyme genotype and sex showed independent assortment for 10 of 12 enzymes heterozygous in the male parent. However, among the offspring of males heterozygous f...

Skin peptides protect juvenile leopard frogs (Rana pipiens) against chytridiomycosis.

One issue of great concern for the scientific community is the continuing loss of diverse amphibian species on a global scale. Amphibian populations around the world are experiencing serious losses due to the chytrid fungus, Batrachochytrium dendrobatidis. This pathogen colonizes the skin, leading to the disruption of ionic balance and eventual cardiac arrest. In many species, antimicrobial pep...

Vestibulotrigeminal pathways in the frog, Rana esculenta.

The aim of this study was to investigate whether primary vestibular afferent fibers establish direct connections with the motor and sensory trigeminal system in the brainstem of the frog. The experiments were carried out on Rana esculenta. In anaesthetized animals the trigeminal and vestibular nerves were prepared, and their proximal stumps were labeled either with fluorescein binding dextran a...

Redescription of the frog bladder fluke Gorgoderina attenuata from the northern leopard frog, Rana pipiens.

Morphological characters used to differentiate North American bladder flukes, Gorgoderina spp., are problematic and different authors use different morphological characteristics for distinguishing species. More importantly, no type specimens exist for 4 of the 12 North American species infecting anuran and caudatan hosts. A redescription of Gorgoderina attenuata (Stafford, 1902) Stafford, 1905 ...