Trophic ecology of green sea turtles in a highly urbanized bay: Insights from stable isotopes and mixing models

Lemons, Garrett E.; Lewison, Rebecca L.; Komoroske, Lisa M.; Gaos, Alexander R.; Lai, Chun‐Ta; Dutton, Peter H.; Eguchi, Tomoharu; LeRoux, Robin A.; Seminoff, Jeffrey A.

doi:10.1016/j.jembe.2011.05.012

Cited by 93 publications

(82 citation statements)

References 42 publications

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“…However, inference from the stable isotope ratios of green turtle eggs suggested that some nesting females in the Ogasawara Islands consumed a substantial proportion of invertebrates prior to breeding migration (Hatase et al 2006). Consumption of animal matter by green turtles in other parts of the world has been confirmed by direct observation of episodic ingestion or inferred from stable isotope data or both (Heithaus et al 2002, Seminoff et al 2006b, Amorocho & Reina 2007, Arthur et al 2007, Cardona et al 2010, Burkholder et al 2011, Lemons et al 2011). …”

Section: N · Chelonia Mydasmentioning

confidence: 99%

Site fidelity, ontogenetic shift and diet composition of green turtles Chelonia mydas in Japan inferred from stable isotope analysis

Shimada¹,

Aoki²,

Kameda³

et al. 2014

Endang. Species. Res.

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Section: N · Chelonia Mydasmentioning

confidence: 99%

Site fidelity, ontogenetic shift and diet composition of green turtles Chelonia mydas in Japan inferred from stable isotope analysis

Shimada¹,

Aoki²,

Kameda³

et al. 2014

Endang. Species. Res.

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“…Prior to stable isotope analyses, samples were thawed and rinsed with distilled water, freeze dried for one 8-h cycle, and lipid-extracted using an Accelerated Solvent Extractor (ASE 200) according to previously published methods (Lemons et al, 2011;Allen et al, 2013). Lipid extraction is not known to significantly alter δ 13 C or δ 15 N values in sea turtle skin (Medeiros et al, 2015;Bergamo et al, 2016).…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

Opportunism on the High Seas: Foraging Ecology of Olive Ridley Turtles in the Eastern Pacific Ocean

et al. 2017

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“…The green turtle (Chelonia mydas) is a circumglobal species that is susceptible to overexploitation as a food resource, incidental mortality in fisheries (AlfaroShigueto et al, 2002), and coastal foraging habitat degradation, all of which have contributed to its listing as Endangered on the IUCN Red List (Lemons et al, 2011). The species is found year-round in shallow waters of coasts, bays and lagoons (Bjorndal, 1980;Plotkin et al, 1993), which are important habitats for growth and development (Musick & Limpus, 1997).…”

Section: Introductionmentioning

confidence: 99%

Feeding ecology of the green turtle Chelonia mydas in northern Peru

Jiménez

Pingo

Alfaro‐Shigueto

et al. 2017

lajar

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ABSTRACT. Diet and food preferences of the green turtle Chelonia mydas were analyzed based on digestive tract contents of dead specimens caught incidentally by an artisanal gillnet fishery in Sechura Bay, northern Peru. We examined 27 digestive tracts and identified 35 prey items. The sampled turtles were all juveniles (CCL = 53.7 ± 1.2 cm, range 40.5-67.0 cm). The prey items were grouped into six categories: algae, cnidarians, mollusks, arthropods, chordates and garbage/anthropogenic debris. The items with the highest Frequency of Occurrence values (% FO) were: Caulerpa filiformis (77.8%), Loligo gahi (eggs) (51.9%) and Rhodymenia corallina (44.4%). By weight (% W), the most important items, were L. gahi (eggs) (33.3%), Stomolophus sp. (7.3%) and Aphos porosus (6.5%). According to the Preponderance Index (%IP), the preponderant item was L. gahi (eggs) with 6.1% and 61.2% during winter-spring and summer-autumn, respectively. According to the Resultant Weight index (Rw) of wet items, the most important items were: C. filiformis (13.1%), L. gahi (eggs) (10.5%), R. corallina (7.4%), plastic (7.5%), Gigartina chamissoi (5.1%). Garbage/anthropogenic debris was common in the digestive tracts analyzed. Plastic items had a frequency of occurrence of 44.4%. A greater diversity of food items was observed during summer and autumn. This study shows that juvenile C. mydas forage on a variety of resources. We recommend that conservation plans, land use planning and future management plans in the Sechura Bay include green turtles as a sentinel species for monitoring biodiversity of marine resources and the degree of pollution in the Bay.

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Trophic ecology of green sea turtles in a highly urbanized bay: Insights from stable isotopes and mixing models

Cited by 93 publications

References 42 publications

Site fidelity, ontogenetic shift and diet composition of green turtles Chelonia mydas in Japan inferred from stable isotope analysis

Site fidelity, ontogenetic shift and diet composition of green turtles Chelonia mydas in Japan inferred from stable isotope analysis

Opportunism on the High Seas: Foraging Ecology of Olive Ridley Turtles in the Eastern Pacific Ocean

Feeding ecology of the green turtle Chelonia mydas in northern Peru

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