| Sea turtle nesting distributions and oceanographic constraints on hatchling migration. | |
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MedLine Citation:
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PMID: 20573619 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Patterns of abundance across a species's reproductive range are influenced by ecological and environmental factors that affect the survival of offspring. For marine animals whose offspring must migrate long distances, natural selection may favour reproduction in areas near ocean currents that facilitate migratory movements. Similarly, selection may act against the use of potential reproductive areas from which offspring have difficulty emigrating. As a first step towards investigating this conceptual framework, we analysed loggerhead sea turtle (Caretta caretta) nest abundance along the southeastern US coast as a function of distance to the Gulf Stream System (GSS), the ocean current to which hatchlings in this region migrate. Results indicate that nest density increases as distance to the GSS decreases. Distance to the GSS can account for at least 90 per cent of spatial variation in regional nest density. Even at smaller spatial scales, where local beach conditions presumably exert strong effects, at least 38 per cent of the variance is explained by distance from the GSS. These findings suggest that proximity to favourable ocean currents strongly influences sea turtle nesting distributions. Similar factors may influence patterns of abundance across the reproductive ranges of diverse marine animals, such as penguins, eels, salmon and seals. |
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Authors:
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Nathan F Putman; John M Bane; Kenneth J Lohmann |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-06-23 |
Journal Detail:
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Title: Proceedings. Biological sciences / The Royal Society Volume: 277 ISSN: 1471-2954 ISO Abbreviation: Proc. Biol. Sci. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-10-27 Completed Date: 2011-02-23 Revised Date: 2011-12-21 |
Medline Journal Info:
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Nlm Unique ID: 101245157 Medline TA: Proc Biol Sci Country: England |
Other Details:
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Languages: eng Pagination: 3631-7 Citation Subset: IM |
Affiliation:
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Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA. nputman@email.unc.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animal Migration
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physiology* Animals Nesting Behavior / physiology* Oceans and Seas Reproduction Southeastern United States Turtles / growth & development*, physiology* Water Movements* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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