Isotopic enrichment in Rhizoprionodon porosus (Poey, 1861) and Carcharhinus porosus (Ranzani, 1840) embryos |
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| Authors: | Lina Vanesa Garzón-Peña Angelica Barrera-García Antonio Delgado-Huertas Carlos Julio Polo-Silva |
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| Institution: | 1. Programa de Biología Marina, Fundación Universidad de Bogotá – Jorge Tadeo Lozano, Bogotá, Colombia;2. Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Granada, Spain |
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| Abstract: | Isotopic values of two Caribbean sharpnose shark Rhizoprionodon porosus litters (Poey, 1861) with two and three embryos and one litter of 11 smalltail shark Carcharhinus porosus embryos showed enriched 15N and 13C compared to their mothers. In R. porosus, embryonic isotope values were 3.06 ± 0.07‰ and 0.69 ± 0.15‰ greater than their mothers' for δ15N and δ13C, respectively, whereas in C. porosus, δ15N and δ13C were 1.79 ± 0.09‰ and 1.31 ± 0.17‰ greater in embryos than their mothers. |
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| Keywords: | Colombian Caribbean elasmobranch Gulf of Salamanca mother–offspring interaction stable isotope analysis |
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