Sun exposure, nest temperature and loggerhead turtle hatchlings: Implications for beach shading management strategies at sea turtle rookeries

Wood, Apanie, Booth, David T. and Limpus, Colin J. (2014) Sun exposure, nest temperature and loggerhead turtle hatchlings: Implications for beach shading management strategies at sea turtle rookeries. Journal of Experimental Marine Biology and Ecology, 451 105-114. doi:10.1016/j.jembe.2013.11.005


Author Wood, Apanie
Booth, David T.
Limpus, Colin J.
Title Sun exposure, nest temperature and loggerhead turtle hatchlings: Implications for beach shading management strategies at sea turtle rookeries
Journal name Journal of Experimental Marine Biology and Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 2014-02-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.jembe.2013.11.005
Open Access Status Not yet assessed
Volume 451
Start page 105
End page 114
Total pages 10
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Language eng
Subject 1104 Complementary and Alternative Medicine
1105 Dentistry
Abstract Sea turtle incubation biology is tightly linked to nest thermal conditions due to the effect temperature has on hatching success, sex determination, morphology and locomotion performance. Because of this relationship between nest temperature and hatchling outcomes, global warming presents an immediate threat to many sea turtle nesting beaches throughout the world. Even small rises in nest temperatures may skew sex ratios and, raise egg mortality and influence hatchling phenotypes adversely, impacting on hatchling recruitment and ultimately species survival at some rookeries. The development of adaptive management practices capable of minimizing the effects of increasing global temperature on nest temperatures is thus a priority for animals exhibiting temperature-dependent sex-determination, such as sea turtles. Here, the relationship between solar radiation exposure and nest temperatures at the Mon Repos turtle rookery, south east Queensland, Australia was explored and the relationship between nest temperature and hatchling attributes examined. Shading decreased nest temperature, and higher nest temperatures were associated with smaller sized hatchlings that had decreased locomotion performance. The use of shading to minimize nest temperature is a management strategy that may be used to mitigate detrimental effects of increased global temperatures at some rookeries. Here, we explored the viability of natural shading options, such as the planting of trees behind nesting beaches, for combating the adverse effect of increased nest temperature caused by increased air temperatures.
Keyword Global warming
Incubation
Marine turtles
Nest
Reptiles
Shade
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Biological Sciences Publications
 
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