Show simple item record

Trophic ecology of hawksbill turtles (Eretmochelys imbricata) in Golfo Dulce, Costa Rica: integrating esophageal lavage and stable isotope (δ13C, δ15N) analysis

dc.contributoren-US
dc.creatorMéndez-Salgado, Estefania
dc.creatorChacón-Chaverri, Didiher
dc.creatorFonseca, Luis G.
dc.creatorA. Seminoff, Jeffrey
dc.date2020-03-03
dc.date.accessioned2020-11-05T13:36:43Z
dc.date.available2020-11-05T13:36:43Z
dc.identifierhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol48-issue1-fulltext-2230
dc.identifier10.3856/vol48-issue1-fulltext-2230
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/159224
dc.descriptionHawksbill turtles (Eretmochelys imbricata), considered Critically Endangered, have several small populations in the Eastern Pacific (EP). Knowledge about their diet and habitat use can aid in developing conservation strategies and promoting population recovery in the region. Although considered a spongivore in the Caribbean, data from the EP region indicate that hawksbills consume a wide array of prey species, including angiosperms. We used two approaches to study the diet of hawksbills at Golfo Dulce, Costa Rica: oesophageal lavage and stable isotope (δ13C, δ15N) analysis of bulk skin tissue and blood plasma. Lavage samples collected from 41 turtles revealed macroalgae as the predominant diet item (Rw = 20.22), followed by sea snails and excavating worms. Stable isotope values for blood plasma from 44 turtles ranged from -23.0‰ to -15.7‰ for δ13C and 6.9‰ to 10.4‰ for δ15N, whereas values for skin tissue were -20.4‰ to -13.9‰ and 9.3‰ to 11.0‰ for δ13C and δ15N, respectively. We compared these isotope values with those of five potential prey groups (sponge, sea snail, excavating worm, mangrove, macroalgae) using a multisource stable isotope mixing model analysis in R (SIAR). Our results indicated that multiple prey resources are important for hawksbills in Golfo Dulce, where sea snails, sponges and excavating worms contributed up to 63% of the assimilated diet per individual, and mangrove and macroalgae up to 50%. These data show that hawksbills in Golfo Dulce, and perhaps the wider EP region, are omnivorous, underscoring the importance for considering alternative habitats, aside of coral reefs, for its management and restoration.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol48-issue1-fulltext-2230/1150
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1551
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1552
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1553
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1554
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1555
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1556
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1557
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1558
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1559
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1560
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1561
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol48-issue1-fulltext-2230/1562
dc.sourceLatin American Journal of Aquatic Research; Vol 48, No 1 (2020); 114-130en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 48, No 1 (2020); 114-130es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectEretmochelys imbricata; marine turtles; diet; resource requirements; eastern Pacificen-US
dc.titleTrophic ecology of hawksbill turtles (Eretmochelys imbricata) in Golfo Dulce, Costa Rica: integrating esophageal lavage and stable isotope (δ13C, δ15N) analysisen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


This item appears in the following Collection(s)

Show simple item record