Bycatch and Foraging Ecology of Sea Turtles in the Eastern Pacific
نویسندگان
چکیده
Bycatch and Foraging Ecology of Sea Turtles in the Eastern Pacific by Shaleyla Kelez Sara Department of Environment Duke University Date:_______________________ Approved: ___________________________ Larry B. Crowder, Supervisor ___________________________ Jeffrey A. Seminoff ___________________________ Patrick N. Halpin ___________________________ Scott A. Eckert An abstract of a dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Environment in the Graduate School of Duke University 2011 Copyright by Shaleyla Kelez Sara 2011
منابع مشابه
Multi-year tracking reveals extensive pelagic phase of juvenile loggerhead sea turtles in the North Pacific
BACKGROUND The juvenile stage of loggerhead sea turtles (Caretta caretta) can last for decades. In the North Pacific Ocean, much is known about their seasonal movements in relation to pelagic habitat, yet understanding their multi-year, basin-scale movements has proven more difficult. Here, we categorize the large-scale movements of 231 turtles satellite tracked from 1997 to 2013 and explore th...
متن کاملMultiple Distant Origins for Green Sea Turtles Aggregating off Gorgona Island in the Colombian Eastern Pacific
Mitochondrial DNA analyses have been useful for resolving maternal lineages and migratory behavior to foraging grounds (FG) in sea turtles. However, little is known about source rookeries and haplotype composition of foraging green turtle aggregations in the southeastern Pacific. We used mitochondrial DNA control region sequences to identify the haplotype composition of 55 green turtles, Chelon...
متن کاملSpatial ecology of critically endangered hawksbill turtles Eretmochelys imbricata: implications for management and conservation
Elucidating spatio-temporal movements of animals is an integral component of wildlife conservation and protected species management. Between 2008 and 2010 we satellite tracked 15 adult female hawksbill turtles Eretmochelys imbricata in the eastern Pacific Ocean to evaluate their movement behavior and to guide management and conservation efforts of this highly endangered population. Movements an...
متن کاملPredicting bycatch hotspots for endangered leatherback turtles on longlines in the Pacific Ocean
Fisheries bycatch is a critical source of mortality for rapidly declining populations of leatherback turtles, Dermochelys coriacea. We integrated use-intensity distributions for 135 satellite-tracked adult turtles with longline fishing effort to estimate predicted bycatch risk over space and time in the Pacific Ocean. Areas of predicted bycatch risk did not overlap for eastern and western Pacif...
متن کاملComposition of Hawaiian green turtle foraging aggregations: mtDNA evidence for a distinct regional population
To examine the stock composition of Hawaiian foraging populations and evaluate current life-history hypotheses, mtDNA control region sequences from immature and adult green turtles that forage around the Hawaiian Islands were compared to potential source nesting populations across the Pacific. We examined the stock composition of the feeding ground (FG) populations at 5 index sites across the H...
متن کامل