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Sex Determination in Reptiles
Abstract
Two factors in reptile sex determination have been studied: (1) the presence or absence of heteromorphic sex chromosomes, and (2) the influence of temperature. Recognizable sex chromosomes are common in snakes and lizards, but are apparently rare in turtles and absent in crocodilians and the tuatara. Temperature-dependent sex determination (TSD) is common in turtles and has been reported in two lizards and alligators; however, data on TSD are available for few non-turtle species. Present findings on TSD suggest that (1) temperature actually determines sex rather than simply causing differential mortality, and (2) temperature controls sex determination in nature as well as in the laboratory. Only one study, however, has convincingly demonstrated the latter. Sex determination by nest temperature is proposed to interfere with the evolution of sex chromosomes and live-bearing (ovoviviparity); a negative correlation should thus be observed between TSD and sex chromosomes/live-bearing. Present evidence is consistent with these predictions. Possible selective advantages and disadvantages of the different sex-determined mechanisms are discussed, and an attempt is made to deduce their ancestries.
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Cited by
Climate Extremes: Observations, Modeling, and Impacts
Easterling, D. R., Meehl, G. A., Parmesan, C., Changnon, S. A., Karl, T. R., & Mearns, L. O. (2000) · Science · doi:10.1126/science.289.5487.2068 · Cited by 4,867
Ecological Consequences of Recent Climate Change
McCarty, J. P. (2001) · Conservation Biology · doi:10.1046/j.1523-1739.2001.015002320.x · Cited by 1,084
Temperature-Dependent Sex Determination in Vertebrates
(2018) · Open Monographs · doi:10.5479/si.9781944466213 · Cited by 522
Sensitive periods in development: Structural characteristics and causal interpretations.
Bornstein, M. H. (1989) · Psychological Bulletin · doi:10.1037//0033-2909.105.2.179 · Cited by 375
Male Reproductive Health and Environmental Xenoestrogens
Toppari, J., Larsen, J. C., Christiansen, P., Giwercman, A., Grandjean, P., Guillette, L. J., Jegou, B., Jensen, T. K., Jouannet, P., Keiding, N., et al. (1996) · Environmental Health Perspectives · doi:10.2307/3432709 · Cited by 348
Metadata
- Authors
- Bull, J. J.
- Venue
- The Quarterly Review of Biology
- Publisher
- University of Chicago Press
- Published
- 1980-03
- Volume
- 55
- Issue
- 1
- Pages
- 3-21
- ISSN
- 0033-5770 (ISSN-L)
- 1539-7718
- OpenAlex
- W2063190028
- Cited by
- 774
- References
- 0
- FWCI
- 9.53
- Type
- journal article
- Language
- en
- Open access
- closed
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