Rotney Piedra

Vulnerability of the Critically Endangered leatherback turtle to fisheries bycatch in the eastern Pacific Ocean. II. Assessment of mitigation measures

SP Griffiths, BP Wallace, Verónica Lucía Cáceres, L. F. Martín Rodríguez et autres

Industrial tuna and artisanal fisheries targeting multiple species in the eastern Pacific Ocean (EPO) interact with the Critically Endangered East Pacific (EP) leatherback turtle Dermochelys coriacea. In 2021, a revised Inter-American Tropical Tuna Commission (IATTC) resolution on sea turtles aimed to reduce …

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Vulnerability of the Critically Endangered leatherback turtle to fisheries bycatch in the eastern Pacific Ocean. I. A machine-learning species distribution model

Jon López, Shane Paul Griffiths, BP Wallace, Verónica Lucía Cáceres et autres

The Eastern Pacific population of leatherback turtles Dermochelys coriacea is Critically Endangered, with incidental capture in coastal and pelagic fisheries as one of the major causes. Given the population’s broad geographic range, status, and extensive overlap with fisheries throughout the region, identifying …

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Population structure of Pacific green turtles: a new perspective from microsatellite DNA variation

Suzanne E. Roden, John B. Horne, Michael P. Jensen, Nancy N. FitzSimmons et autres

This study builds upon the current understanding of green turtle population genetic structure in the Pacific that has largely been based on mitochondrial DNA (mtDNA), by examining nuclear DNA (nDNA) diversity, regional connectivity, and male-mediated gene flow. A total of 1,111 nesting …

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Secondary nesting beaches for leatherback turtles on the Pacific coast of Costa Rica

Pilar Santidrian, Nathan Jack Robinson, Luis G. Fonseca, Wagner M. Quirós et autres

Leatherback turtles (Dermochelys coriacea) have declined dramatically in the eastern Pacific Ocean (EP) in recent decades. Traditionally, population assessments have relied on the numbers of turtles on the beaches with the highest abundance of turtles (index beaches) and often disregarded the importance …

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High beach temperatures increased female-biased primary sex ratios but reduced output of female hatchlings in the leatherback turtle

Pilar Santidrián Tomillo, Daniel Oró, Frank V. Paladino, Rotney Piedra et autres

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Movements and diving behavior of internesting green turtles along Pacific Costa Rica

Gabriela S. Blanco, Stephen J. Morreale, Jeffrey A. Seminoff, Frank V. Paladino et autres

Using satellite transmitters, we determined the internesting movements, spatial ecology and diving behavior of East Pacific green turtles (Chelonia mydas) nesting on Nombre de Jesús and Zapotillal beaches along the Pacific coast of northwestern Costa Rica. Kernel density analysis indicated that turtles …

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Identification of distinct movement patterns in Pacific leatherback turtle populations influenced by ocean conditions

Helen Bailey, Scott R. Benson, George L. Shillinger, Steven J. Bograd et autres

Interactions with fisheries are believed to be a major cause of mortality for adult leatherback turtles (Dermochelys coriacea), which is of particular concern in the Pacific Ocean, where they have been rapidly declining. In order to identify where these interactions are occurring …

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LEATHERBACK TURTLE MOVEMENT PATTERNS

Helen Bailey, Scott R. Benson, George L. Shillinger, Steven J. Bograd et autres

Eastern Pacific leatherback turtle (Dermochelys coriacea) on the nesting beach in Parque Nacional Las Baulas, Playa Grande, Costa Rica. Leatherback turtle populations have been rapidly declining in the Pacific Ocean, primarily as a result of loss of nesting habitat, poaching of eggs, …

Reproductive output and ultrasonography of an endangered population of East Pacific green turtles

Gabriela S. Blanco, Stephen J. Morreale, Elizabeth Vélez, Rotney Piedra et autres

Abstract Reproductive output is one of the most relevant aspects of life history. We analyzed the reproductive output of the endangered East Pacific green turtle (Chelonia mydas) nesting in Nombre de Jesús, Costa Rica. We supplemented beach patrols with ultrasonography to estimate …

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Vertical and horizontal habitat preferences of post-nesting leatherback turtles in the South Pacific Ocean

GL Shillinger, AM Swithenbank, Helen Bailey, SJ Bograd et autres

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 422:275-289 (2011) - DOI: https://doi.org/10.3354/meps08884 Vertical and horizontal habitat preferences of post-nesting leatherback turtles in the …

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Identification of high-use internesting habitats for eastern Pacific leatherback turtles: role of the environment and implications for conservation

GL Shillinger, AM Swithenbank, SJ Bograd, Helen Bailey et autres

The numbers of leatherback turtles Dermochelys coriacea in the eastern Pacific Ocean have declined by up to 90% in the past 2 decades.Initially, egg harvesting was determined to be the largest causative factor, but now that this has been eliminated, high estimated …

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Effects of Illegal Harvest of Eggs on the Population Decline of Leatherback Turtles in Las Baulas Marine National Park, Costa Rica

Pilar Santidrián Tomillo, Vincent S. Saba, Rotney Piedra, Frank V. Paladino et autres

Within 19 years the nesting population of leatherback turtles (Dermochelys coriacea) at Parque Nacional Marino Las Baulas declined from 1500 turtles nesting per year to about 100. We analyzed the effects of fishery bycatch and illegal harvesting (poaching) of eggs on this …

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