HELMINTH COMMUNITY STRUCTURE OF SYMPATRIC EASTERN AMERICAN TOAD, BUFO AMERICANUS AMERICANUS, NORTHERN LEOPARD FROG, RANA PIPIENS, AND BLUE-SPOTTED SALAMANDER, AMBYSTOMA LATERALE, FROM SOUTHEASTERN WISCONSIN

2003 ◽  
Vol 89 (4) ◽  
pp. 673-680 ◽  
Author(s):  
Matthew G. Bolek ◽  
James R. Coggins
Keyword(s):  
Community Structure ◽  
Rana Pipiens ◽  
Leopard Frog ◽  
Helminth Community ◽  
Bufo Americanus ◽  
Spotted Salamander ◽  
Northern Leopard Frog ◽  
American Toad ◽  
Ambystoma Laterale ◽  
Toad Bufo

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

Chronic PFAS‐exposure under environmentally relevant conditions delays development in northern leopard frog ( Rana pipiens ) larvae

2020 ◽  
Author(s):  
R. Wesley Flynn ◽  
Michael Iacchetta ◽  
Chloe Perre ◽  
Linda Lee ◽  
Maria S. Sepúlveda ◽  
...  
Keyword(s):  
Rana Pipiens ◽  
Leopard Frog ◽  
Northern Leopard Frog

Characterization of the spermiation response, luteinizing hormone release and sperm quality in the American toad (Bufo americanus) and the endangered Wyoming toad (Bufo baxteri)

2000 ◽  
Vol 12 (2) ◽  
pp. 51 ◽  
Author(s):  
Amy R. Obringer ◽  
Justine K. O'Brien ◽  
Robin L. Saunders ◽  
Kazutoshi Yamamoto ◽  
Sakae Kikuyama ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Sampling Interval ◽  
Sperm Production ◽  
Bufo Americanus ◽  
American Toad ◽  
Non Invasive ◽  
Lh Release ◽  
Wyoming Toad ◽  
Toad Bufo

Spermiation and LH release in response to several methods of LHRH administration were assessed in the American toad (Bufo americanus), and the most successful method was tested in the endangered Wyoming toad (Bufo baxteri). Specific objectives were to: (1) compare spermiation responses and plasma LH concentration after invasive and non-invasive LHRH treatments; (2) evaluate sperm production in response to different LHRH dosages; (3) characterize the timing of sperm release post LHRH treatment; and (4) assess sperm quality (motility, viability, morphology and acrosomal status). Male American toads were administered 4 g LHRH by one of four routes: (1) intraperitoneal injection (IP); (2) subcutaneous injection (SQ); (3) dorsal dermis absorption (DDA); and (4) ventral dermis absorption (VDA). Aspermic urine only was collected from saline-treated controls and DDA animals. Several VDA animals released spermic urine; however, all LHRH-injected toads released spermatozoa. IP animals produced higher sperm and LH concentrations than SQ animals. The spermiation response in animals treated IP with 1 g LHRH was similar to that in animals treated with 4 g, but lower LHRH dosages tested produced inferior responses. Sperm production in responsive animals increased over time during the 12-h sampling interval. Regardless of treatment, most American toad spermatozoa were motile, viable, and acrosome-intact. Endangered Wyoming toads were treated IP with 4 g LHRH, and spermic urine was collected. Although most spermatozoa were viable and acrosome-intact, a considerable percentage possessed structurally abnormal heads. A single IP injection of LHRH appears to be a reliable and safe method for controlling spermiation in toads and may be useful for assisting endangered amphibian propagation.

Survey and Assessment of Northern Leopard Frog (Rana pipiens) Populations in Washington State

1999 ◽  
Vol 80 (2) ◽  
pp. 51 ◽  
Author(s):  
William P. Leonard ◽  
Kelly R. McAllister ◽  
Ronald C. Friesz
Keyword(s):  
Rana Pipiens ◽  
Washington State ◽  
Leopard Frog ◽  
Northern Leopard Frog
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