Faculty Publications

Title

Pivotal range and thermosensitive period of the pig-nosed turtle, Carettochelys insculpta (Testudines : Carettochelydidae), from northern Australia

SelectedWorks Author Profiles:

J. Sean Doody

Document Type

Article

Publication Date

2004

Date Issued

August 2004

Date Available

August 2004

ISSN

0008-4301

Abstract

Understanding temperature-dependent sex determination in nature often depends on knowledge of species-specific attributes that are integrated into the relationship between temperature and sex. We determined two such attributes for the pig-nosed turtle, Carettochelys insculpta Ramsay, 1886, in tropical Australia: the pivotal range in temperature that separates the male-producing domain from the female-producing domain, and the thermosensitive period during which the embryonic sex is influenced by temperature. The pivotal range for C. insculpta was very narrow, spanning only about 1degreesC, and was centered on 32 degreesC, which is high but consistent with temperatures reported for other tropical species. The thermosensitive period spanned developmental stages 17-21 for temperature influence in the direction of maleness and 18-21 for temperature influence in the direction of femaleness. This period is slightly narrower than that for other reptile species but broadly consistent with the middle third of incubation.

Comments

Citation only. Full-text article is available through licensed access provided by the publisher. Members of the USF System may access the full-text of the article through the authenticated link provided.

Language

en_US

Publisher

NATL RESEARCH COUNCIL CANADA

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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