Alligator physiology and life history: the importance of temperature

  title={Alligator physiology and life history: the importance of temperature},
  author={Valentine A. Lance},
  journal={Experimental Gerontology},
  • V. Lance
  • Published 1 July 2003
  • Environmental Science, Biology
  • Experimental Gerontology
Sexual Maturity in Male American Alligators in Southwest Louisiana
The attainment of sexual maturity in alligators appears to be closely associated with growth and is a gradual process lasting several years, while sexually immature alligators show a seasonal pattern of testosterone secretion similar to that of adults, but the values are significantly lower.
Climate warming and reproduction in Chinese alligators
It is suggested that recent increasing global temperatures have the potential to have a substantial effect on Chinese alligator populations in the wild, thus prompting an urgent need for field monitoring of the effects of global warming on this critically endangered species.
Seasonal Androgen Cycles in Adult Male American Alligators (Alligator mississippiensis) from a Barrier Island Population1
This is the first study to demonstrate the presence of DHEA in a crocodilian, and the high plasma D HEA concentrations that paralleled the animals' reproductive activity suggest a reproductive and/or behavioral role in adult male alligators.
A stage-based population model for American alligators in northern latitudes
Very little is known about the population dynamics of American alligators in northern latitudes. To better define the characteristics of the northern population, we combined published life-history
Life histories and conservation of long‐lived reptiles, an illustration with the American crocodile (Crocodylus acutus)
A comparative approach is used to show that the original life-history strategy of American crocodiles is actually shared by other large, long-lived reptiles: while adult survival rates always have a large impact on population growth, this decreases with declining increasing growth rates, in favour of a higher elasticity of the juvenile stage.
Do Habitat Characteristics Influence American Alligator Occupancy of Barrier Islands in North Carolina?
Abstract The geographic range of Alligator mississippiensis (American Alligator) extends to North Carolina, where information on populations is limited. In North Carolina, American Alligators are
Nesting phenology and clutch characteristics of captive Siamese crocodiles (Crocodylus siamensis) in Cambodia.
A single female produced two clutches during 2001, complimenting previous reports of double-clutching among C. siamensis, and there was no correlation between clutch size and oviposition date during either 2000 or 2001.
Alligator (Alligator mississippiensis) Aquaculture in the United States
Growth of alligator farming, using current production methods, will be limited by the natural productivity of the wild resource upon which the industry depends and demand for products utilizing alligator leather.
Reptiles, Biodiversity of


Growth rates of American alligators in coastal South Carolina
Delayed breeding at larger size in South Carolina may be related more to social dominance than to growth rates, and an understanding of age and size relations are essential if alligators are to be managed effectively.
Ecology and Physiology of Nesting and Early Development of the American Alligator
Ambient temperatures were significantly correlated with alligator ( Alligator mississippiensis ) nesting activity. Nesting occurred earliest when March-April-May ambient temperatures were highest.
Reproductive Cycle of the American Alligator
The reproductive cycle of the American alligator, Alligator mississippiensis , was studied using blood and tissue samples from wild alligators, and blood samples drawn from a captive breeding stock
Growth dynamics in the American alligator (Alligator mississippiensis)
A comparison of predictions from growth models derived from several populations indicated that Everglades alligators grew more slowly than did those in more temperate areas, leading to the rejection of the hypothesis that growth rates in subtropical Florida would be elevated because of the long growing season.
Seasonal acclimatisation of muscle metabolic enzymes in a reptile (Alligator mississippiensis)
Alligators compensated for lower winter temperatures by increasing enzyme activities, and the activities of cytochrome c oxidase and lactate dehydrogenase were significantly greater in winter compared with summer at all assay temperatures.
Rediscovery of relict populations of the Nile crocodile Crocodylus niloticus in south-eastern Mauritania, with observations on their natural history
Abstract In 1998 and 1999, relict populations of the Nile crocodile Crocodylus niloticus were rediscovered in south-eastern Mauritania, 70 years after the last reports of their existence and 6 years
Multiple paternity and mating patterns in the American alligator, Alligator mississippiensis
There was no significant correlation between genetic relatedness of nesting females and pairwise nest distances, indicating that females in this sample that nested close to one another were no more related than any two nesting females chosen at random.
Changes in femoral morphology during egg‐laying in Alligator mississippiensis
Results indicated that apposition of periosteal bone may have been reduced in egg‐layers and that egg-laying alligators, like turtles, resorb endosteal structural bone, which may be used as a source of calcium for the formation of eggshells.