| 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. | one-hundred twelve amphibians, including 51 blue-spotted salamanders, ambystoma laterale, 30 eastern american toads, bufo americanus americanus, and 31 northern leopard frogs, rana pipiens, were collected during april-october 1996 from waukesha county, wisconsin and examined for helminth parasites. the helminth compound community of this amphibian assemblage consisted of at least 10 species: 9 in american toads, 8 in leopard frogs, and 3 in blue-spotted salamanders. american toads shared 7 speci ... | 2003 | 14533672 |
| 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 is based on new collections from 6 species of anurans from arkansas, nebraska, new york, and wisconsin. ... | 2009 | 19642808 |
| indicators of the statuses of amphibian populations and their potential for exposure to atrazine in four midwestern u.s. conservation areas. | extensive corn production in the midwestern united states has physically eliminated or fragmented vast areas of historical amphibian habitat. midwestern corn farmers also apply large quantities of fertilizers and herbicides, which can cause direct and indirect effects on amphibians. limited field research regarding the statuses of midwestern amphibian populations near areas of corn production has left resource managers, conservation planners, and other stakeholders needing more information to im ... | 2014 | 25216249 |