Factors affecting basking in a northern population of the common snapping turtle, Chelydra serpentina
In Apalone spinifera, the elements of the neurocranium ossify between stages 19 and 23 (SHEIL, 2003), in Macrochelys teminckii between stages 21 and 24 (SHEIL, 2005), and in Chelydra serpentina
(RIEPPEL, 1993; SHEIL; GREENBAUM, 2005) between stages 21 and 23, indicating that this is the period of longest duration in Podocnemis expansa, since it takes place between stages 19 and 24.
Nesting synchrony: a strategy to decrease predation of snapping turtle, Chelydra serpentina
sylvatica, Chelydra serpentina
, Chrysemys picta, Emydoidea blandingii, Glyptemys insculpta, Graptemys geographica, Eumeces fasciatus, Diadophis punctatus, Elaphe vulpina, Lampropeltis triangulum, Nerodia sipedon, Opheodrys vernalis, Storeria dekay, S.
Ontogenetic changes in habitat use by juvenile turtles, Chelydra serpentina
and Chrysemys picta.
has the broadest geographic range of any North American chelonian (Iverson, 1992).
trispinosus Chelydra serpentina
Stomach, and others Intestine Capillaria plica Procyon lotor Urinary Bladder Citellinema Sciurus carolinensis Intestine bifurcatum C.
Embryonic temperature influences juvenile temperature choice and growth rate in snapping turtles Chelydra serpentina
The snapping turtle, Chelydra serpentina
, is one of the most broadly distributed chelonians in the world; they occur from southeastern Canada westward to Alberta and throughout the eastern half of the United States and into Central America.
4% consisted of the following five species: Bufo nebulifer, Syrrhophus marnocki, Trachemys scripta, Chelydra serpentina
, and Rana catesbeiana.
Octylphenol (OP) alters the expression of members of the amyleid protein family in the hypothalamus of the snapping turtle, Chelydra serpentina
Manitou Notophthalmus viridescens X X X Plethodon cinereus X X X X X Ambystoma laterale X X X Ambystoma maculatum X X Bufo americanus X X X X X X Hyla versicolor X Pseudacris crucifer X X* X X X Rana catesbeiana X X Rana clamitans X X X X Rana sylvatica X X Rana pipiens X X Chelydra serpentina
X X X Chrysemys picta X X X X Thamnophis sirtalis X X X X X Thamnophis sauritus X X Nerodia sipedon X X X X X Storeria dekayi X Storeria occipitomaculata X X X Diadophis punctatus X X X X Liochlorophis vernalis X Lampropeltis triangulum X X X X Species Islands S.
The remaining 5% consisted of Deirochelys r eticularia (Chicken turtles), Apalone spinifera (Spiny softshell turtles), Chelydra serpentina
(Common snapping turtles), and Macroclemmys temminickii (Alligator snapping turtles).
fiavescens (Iverson 1991b), Chelydra serpentina
(Congdon et al.
Among aquatic turtles, body temperatures are strongly correlated with water temperature (Brattstrom, 1965; Punzo, 1975; Fitzgerald and Nelson, 2011), but Weathers and White (1971) found evidence of physiological control of heat transfer in several species of turtles, including the common snapping turtle, Chelydra serpentina