The published literature does not provide a consensus regarding maximum body sizes of North America's largest wild freshwater turtles (genus Macrochelys). The largest known wild M. suwanniensis (Suwannee Alligator Snapping Turtle) currently exists as a curated specimen measuring 71...
Manipulation of the embryonic hormonal environment can result in sex reversal. We measured circulating estradiol 17-β (E2) and testosterone (T) levels in temperature-determined and sex-reversed snapping turtles (Chelydra serpentina). Eight-month-old turtles have sex steroid profiles that are sex ...
The evolution of temperature-d... N Valenzuela,VA Lance - 《Reptilian Incubation Environment Evolution & Behaviour》 被引量: 570发表: 2004年 Phenotypic Plasticity for Growth in the Common Snapping Turtle: Effects of Incubation Temperature, Clutch, and Their Interaction We examined a critical ...
A study of common snapping turtles conducted from 1975 through 1992 in southeastern Michigan provided sufficient demographic data to examine how life histo... JD Congdon,AE Dunham - 《American Zoologist》 被引量: 2192发表: 1994年 Evaluating temperature regulation by field-active ectotherms: the falla...
Trait databases have become important resources for large-scale comparative studies in ecology and evolution. Here we introduce the AnimalTraits database, a curated database of body mass, metabolic rate and brain size, in standardised units, for terrestr
(1994) Interclutch and inter- population variation in the effects of incubation conditions on sex, survival and growth of hatchling snapping turtles (Chelydra serpentina). Journal of Zoology (London) 233, 233– 257. Bull, J.J. (1980) Sex determination in reptiles. Quarterly Review of Biology ...
In semiaquatic and freshwater turtles, nest soil hydric conditions have been shown to influence the size of hatchlings [16,17,18,19,20]. For instance, hatchlings of the red-eared slider turtle (Trachemys scripta) and the common snapping turtle (Chelydra serpentina) were found to be larger ...
This paper combines published and original data on sexual size dimorphism, reproductive behavior, and habitat types in turtles. Our major finding is that observed patterns of sexual size dimorphism correlate with habitat type and male mating strategy. (1) In most terrestrial species, males engage in...
Thus, ecologically important variation in body size and nutrient reserves of hatchling snapping turtles results from variation in the environment among and within nests.doi:10.1007/BF00317890Gary C. PackardKirk Miller and Mary J. PackardSpringer-VerlagOecologia...
TURTLESALLIGATORSCHEMILUMINESCENCE immunoassayFEMALESWe studied the determination of sex for intermediate size classes and adult sexual dimorphism in a Georgia population of Macrochelys temminckii (Alligator Snapping Turtle). We sexed turtles when possible based on size and morphometrics. We ...