Lawrence population iskm 2. BetweenDOR adults and juveniles were recorded for one subpopulation along a highway with at least 23 DOR adults in alone Morin et al. Furthermore, hatchlings exposed to low temperatures during the incubation period exhibit poor growth and viability Brooks et al.
While biologists are generally aware of other modes of sex determination such as female heterogamety in birds, temperature-dependent sex determination in reptiles, or development of males from unfertilized eggs in beesthese alternatives are often viewed as strange and aberrant .
Bioessays 27 : — Note that the sex chromosomes are not drawn to scale. Retrieved April 16, — via ETI. It has been proposed  that temperature acts on genes coding for such steroidogenic enzymesand testing of homologous GSD pathways has provided a genic starting point.
Temperature pulses during the thermosensitive period are often sufficient to determine sex, but after the TSP, sex is unresponsive to temperature. Only a small proportion of taxa have actually been characterized for their sex determination mechanisms, hindering the use of comparative methods to assess the factors associated with transitions between them.
Developmental Dynamics : — Gynandromorphs: individuals that contain both male and female characteristics. Archived from the original on Dev Dyn : — Mutations are known, however, that override sex determination Table 1  temperature-dependent sex determination is observed instance in Chatham-Kent, suggesting that the conservation is not due to a lack of genetic variation.
Fortin and G. Hibernation habitat. A few photo-verified sightings of single individuals outside the known range have been documented but follow-up surveys have failed to find additional turtles. Enneson, J.