Temporal and geographic variation of organochlorine residues in eggs of the common snapping turtle (Chelydra serpentina serpentina) (1981–1991) and comparisons to trends in the herring gull (Larus argentatus) in the Great Lakes basin in Ontario, Canada

1996 ◽  
Vol 31 (4) ◽  
pp. 512-524 ◽  
Author(s):  
C. A. Bishop ◽  
P. Ng ◽  
R. J. Norstrom ◽  
R. J. Brooks ◽  
K. E. Pettit
Keyword(s):  
Great Lakes ◽  
Geographic Variation ◽  
Larus Argentatus ◽  
Herring Gull ◽  
Chelydra Serpentina ◽  
Great Lakes Basin ◽  
Snapping Turtle ◽  
The Common

Environmental Contaminants in Eggs of the Common Snapping Turtle (Chelydra serpentina serpentina) from the Great Lakes-St. Lawrence River Basin of Ontario, Canada (1981, 1984)

1993 ◽  
Vol 19 (4) ◽  
pp. 681-694 ◽  
Author(s):  
John Struger ◽  
John E. Elliott ◽  
Christine A. Bishop ◽  
Martyn E. Obbard ◽  
Ross J. Norstrom ◽  
...  
Keyword(s):  
Great Lakes ◽  
River Basin ◽  
Environmental Contaminants ◽  
Chelydra Serpentina ◽  
Snapping Turtle ◽  
The Common ◽  
St Lawrence River

Conservation Genetics of the Common Snapping Turtle (Chelydra serpentina)

1996 ◽  
Vol 10 (2) ◽  
pp. 397-405 ◽  
Author(s):  
Christopher A. Phillips ◽  
Walter W. Dimmick ◽  
John L. Carr
Keyword(s):  
Conservation Genetics ◽  
Chelydra Serpentina ◽  
Snapping Turtle ◽  
The Common

Geographic variation in snapping turtle (Chelydra serpentina serpentina) egg components across a longitudinal transect

2004 ◽  
Vol 82 (1) ◽  
pp. 102-109 ◽  
Author(s):  
Michael S Finkler ◽  
Anthony C Steyermark ◽  
Kate E Jenks
Keyword(s):  
Water Content ◽  
Geographic Variation ◽  
Egg Quality ◽  
Egg Mass ◽  
Female Size ◽  
Chelydra Serpentina ◽  
Shell Mass ◽  
Snapping Turtle ◽  
Air Temperatures ◽  
Egg Components

Common snapping turtles (Chelydra serpentina serpentina) have an extensive range across North America, inhabiting aquatic habitats in diverse thermal and hydric climates. Although geographic variation in reproductive characters such as female size, clutch size, and egg mass have been investigated, little is known about geographic variation in egg components. In this study, we examined variation in the water content, solid content, and shell mass of snapping turtle eggs from four populations dispersed along a longitudinal geographic transect (Pennsylvania, Michigan, Minnesota, and Nebraska). Initial egg mass and dry shell mass were similar among these four populations. However, water contents of eggs correlated positively with longitude, whereas dry content mass correlated negatively with longitude. Moreover, water content of eggs correlated negatively with the average number of days per year where average air temperatures exceeded 15 °C in a particular region (an indicator of regional thermal climate), and dry content of eggs correlated positively with both the number of days per year where average air temperatures exceeded 15 °C and the average total precipitation for the months of May through September (an indicator of regional hydric climate). These findings suggest that egg content (and perhaps egg quality) in this wide-ranging species of turtle varies in a manner reflecting differences in climate.

Hibernacula Use and Hibernation Phenology in the Common Snapping Turtle (Chelydra serpentina) in Canaan Valley, West Virginia

2012 ◽  
Vol 46 (2) ◽  
pp. 269-274 ◽  
Author(s):  
Gabriel F. Strain ◽  
James T. Anderson ◽  
Edwin D. Michael ◽  
Philip J. Turk
Keyword(s):  
West Virginia ◽  
Chelydra Serpentina ◽  
Snapping Turtle ◽  
The Common ◽  
Canaan Valley
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