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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Phenotypically Linked Dichotomy in Sea Turtle Foraging Requires Multiple Conservation Approaches
Current Biology, Volume 16, No. 10, Year 2006
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Description
Marine turtles undergo dramatic ontogenic changes in body size and behavior, with the loggerhead sea turtle, Caretta caretta, typically switching from an initial oceanic juvenile stage to one in the neritic, where maturation is reached and breeding migrations are subsequently undertaken every 2-3 years [1-3]. Using satellite tracking, we investigated the migratory movements of adult females from one of the world's largest nesting aggregations at Cape Verde, West Africa. In direct contrast with the accepted life-history model for this species [4], results reveal two distinct adult foraging strategies that appear to be linked to body size. The larger turtles (n = 3) foraged in coastal waters, whereas smaller individuals (n = 7) foraged oceanically. The conservation implications of these findings are profound, with the population compartmentalized into habitats that may be differentially impacted by fishery threats in what is a global fishing hotspot [5]. Although the protection of discrete areas containing coastal individuals may be attainable, the more numerous pelagic individuals are widely dispersed with individuals roaming over more than half a million square kilometers. Therefore, mitigation of fisheries by-catch for sea turtles in the east Atlantic will likely require complex and regionally tailored actions to account for this dichotomous behavior. © 2006 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Hawkes, Lucy Alice
United Kingdom, Exeter
University of Exeter
Broderick, Annette Cameron
United Kingdom, Exeter
University of Exeter
Coyne, Michael S.
United States, Durham
Duke University
Godfrey, Matthew H.
United States, Beaufort
North Carolina Wildlife Resources Commission
Lopez-Jurado, Luis Felipe
Spain, Las Palmas de Gran Canaria
Universidad de Las Palmas de Gran Canaria
Lopez-Suarez, Pedro
Spain, Las Palmas de Gran Canaria
Universidad de Las Palmas de Gran Canaria
Merino, Sonia Elsy
Cape Verde, Mindelo
Instituto Nacional de Desenvolvimento da Pesca Mindelo
Varo-Cruz, Nuria
Spain, Las Palmas de Gran Canaria
Universidad de Las Palmas de Gran Canaria
Godley, Brendan J.
United Kingdom, Exeter
University of Exeter
Statistics
Citations: 221
Authors: 9
Affiliations: 5
Identifiers
Doi:
10.1016/j.cub.2006.03.063
ISSN:
09609822
Study Design
Cross Sectional Study
Study Locations
Multi-countries
Cabo Verde
Participants Gender
Female