Spatial Relations in Natural Populations of the Leopard Frog, Rana pipiens Schreber, in Northern Michigan

1965 ◽  
Vol 74 (2) ◽  
pp. 464 ◽  
Author(s):  
Jim W. Dole
Keyword(s):  
Rana Pipiens ◽  
Natural Populations ◽  
Spatial Relations ◽  
Leopard Frog ◽  
Northern Michigan

Hopping and swimming in the leopard frog,Rana pipiens: I. Step cycles and kinematics

1996 ◽  
Vol 230 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Susan E. Peters ◽  
Lynn T. Kamel ◽  
David P. Bashor
Keyword(s):  
Rana Pipiens ◽  
Leopard Frog

scholarly journals Redescription of the Frog Bladder Fluke Gorgoderina attenuata from the Northern Leopard Frog, Rana pipiens

2009 ◽  
Vol 95 (3) ◽  
pp. 665-668 ◽  
Author(s):  
Matthew G. Bolek ◽  
Scott D. Snyder ◽  
John Janovy
Keyword(s):  
Rana Pipiens ◽  
Leopard Frog ◽  
Northern Leopard Frog

GROWTH AND SURVIVAL OF NORTHERN LEOPARD FROG (RANA PIPIENS) TADPOLES EXPOSED TO TWO COMMON PESTICIDES

2009 ◽  
Vol 28 (7) ◽  
pp. 1469 ◽  
Author(s):  
Kausalya Shenoy ◽  
B. Thomas Cunningham ◽  
James W. Renfroe ◽  
Philip H. Crowley
Keyword(s):  
Rana Pipiens ◽  
Leopard Frog ◽  
Northern Leopard Frog ◽  
Growth And Survival

Development and Survivorship of Northern Leopard Frogs (Rana pipiens) and Green Frogs (Rana clamitans) Exposed to Contaminants in the Water and Sediments of the St. Lawrence River near Cornwall, Ontario

2004 ◽  
Vol 39 (3) ◽  
pp. 160-174 ◽  
Author(s):  
Tana V. McDaniel ◽  
Megan L. Harris ◽  
Christine A. Bishop ◽  
John Struger
Keyword(s):  
Rana Pipiens ◽  
Early Stage ◽  
Sediment Quality ◽  
Leopard Frog ◽  
Reference Sites ◽  
Aquatic Life ◽  
Leopard Frogs ◽  
Water And Sediment ◽  
Northern Leopard Frogs ◽  
St Lawrence River

Abstract High levels of contamination in the aquatic environment and wildlife within the Ontario portion of the St. Lawrence River at the Cornwall Area of Concern (AOC) have raised questions about potential impacts on wildlife health. Northern leopard frog embryos were raised in two wetland sites within the AOC and at two reference sites to assess differences in water and sediment quality on survivorship and deformity rates. Chlorinated hydrocarbons (total polychlorinated biphenyls, organochlorine pesticides), polycyclic aromatic hydrocarbons, nutrients and heavy metals were measured in sediment and/or water from the study sites. Levels of some metals such as aluminium, cadmium, chromium and copper, exceeded federal and provincial guidelines for the protection of aquatic life, especially in the two AOC wetlands. Early stage tadpole survivorship was significantly lower and deformity frequency significantly higher at wetlands within the AOC; however, differences were likely not biologically significant. Survivorship and deformity rates of leopard frogs (Rana pipiens) at metamorphosis did not differ significantly among sites. Onset of metamorphosis was accelerated in tadpoles raised in wetlands within the AOC. Tadpoles raised in wetlands within the St. Lawrence River AOC took significantly less time to complete metamorphosis (53–55 days) than did tadpoles raised at reference sites (61–64 days). The phenology of metamorphosis was also more synchronous in tadpoles raised in the AOC, with all tadpoles reaching metamorphosis within a space of 3 to 7 days, as compared to 9 to 12 days at reference wetlands; these differences could not be accounted for by water temperature. Differences in development and survivorship rates between AOC and reference sites may be related to contaminant concentrations in water and sediment. However, no strong evidence for beneficial use impairment in terms of reproductive impairments or elevated deformity rates were seen from caged leopard frogs in the two AOC wetlands.

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