دورية أكاديمية
Hydrogen isotope assimilation and discrimination in green turtles.
| العنوان: | Hydrogen isotope assimilation and discrimination in green turtles. |
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| المؤلفون: | Pagès Barceló L; Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA., Seminoff JA; National Oceanic and Atmospheric Administration-National Marine Fisheries Service, Southwest Fisheries Science Center, La Jolla, CA 92037, USA., Vander Zanden HB; Department of Biology, University of Florida, Gainesville, FL 32611, USA., Jones TT; NOAA Fisheries, Pacific Islands Fisheries Science Center, Honolulu, HI 96818, USA., Bjorndal KA; Department of Biology, University of Florida, Gainesville, FL 32611, USA., Bolten AB; Department of Biology, University of Florida, Gainesville, FL 32611, USA., Mustin W; Cayman Turtle Conservation and Education Center, Grand Cayman KY1-1301, Cayman Islands., Busquets-Vass G; Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA.; Centro de Investigación Científica y Educación Superior de Ensenada, Unidad La Paz, Laboratorio de Macroecología Marina, Baja California Sur 23050, Mexico., Newsome SD; Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA. |
| المصدر: | The Journal of experimental biology [J Exp Biol] 2021 Apr 01; Vol. 224 (7). Date of Electronic Publication: 2021 Apr 15. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: Company Of Biologists Limited Country of Publication: England NLM ID: 0243705 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1477-9145 (Electronic) Linking ISSN: 00220949 NLM ISO Abbreviation: J Exp Biol Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: London : Company Of Biologists Limited Original Publication: London, Cambridge Univ. Press. |
| مواضيع طبية MeSH: | Turtles*, Animals ; Carbon Isotopes/analysis ; Ecosystem ; Female ; Hydrogen ; Nitrogen Isotopes/analysis |
| مستخلص: | Although hydrogen isotopes (δ2H) are commonly used as tracers of animal movement, minimal research has investigated the use of δ2H as a proxy to quantify resource and habitat use. While carbon and nitrogen are ultimately derived from a single source (food), the proportion of hydrogen in consumer tissues originates from two distinct sources: body water and food. Before hydrogen isotopes can be effectively used as a resource and habitat tracer, we need estimates of (net) discrimination factors (Δ2HNet) that account for the physiologically mediated differences in the δ2H values of animal tissues relative to that of the food and water sources they use to synthesize tissues. Here, we estimated Δ2HNet in captive green turtles (Chelonia mydas) by measuring the δ2H values of tissues (epidermis and blood components) and dietary macromolecules collected in two controlled feeding experiments. Tissue δ2H and Δ2HNet values varied systematically among tissues, with epidermis having higher δ2H and Δ2HNet values than blood components, which mirrors patterns between keratinaceous tissues (feathers, hair) and blood in birds and mammals. Serum/plasma of adult female green turtles had significantly lower δ2H values compared with juveniles, likely due to increased lipid mobilization associated with reproduction. This is the first study to quantify Δ2HNet values in a marine ectotherm, and we anticipate that our results will further refine the use of δ2H analysis to better understand animal resource and habitat use in marine ecosystems, especially coastal areas fueled by a combination of marine (e.g. micro/macroalgae and seagrass) and terrestrial (e.g. mangroves) primary production. Competing Interests: Competing interests The authors declare no competing or financial interests. (© 2021. Published by The Company of Biologists Ltd.) |
| فهرسة مساهمة: | Keywords: Chelonia mydas; Controlled feeding experiment; Hydrogen isotope; Stable isotope analysis; Trophic discrimination factor |
| المشرفين على المادة: | 0 (Carbon Isotopes) 0 (Nitrogen Isotopes) 7YNJ3PO35Z (Hydrogen) |
| تواريخ الأحداث: | Date Created: 20210303 Date Completed: 20210709 Latest Revision: 20230622 |
| رمز التحديث: | 20230623 |
| DOI: | 10.1242/jeb.231431 |
| PMID: | 33653718 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1477-9145 |
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| DOI: | 10.1242/jeb.231431 |