Programa de Biología Marina, Fundación Universidad de Bogotá - Jorge Tadeo Lozano, Bogotá, Colombia.
Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Granada, Spain.
J Fish Biol. 2021 May;98(5):1456-1458. doi: 10.1111/jfb.14651. Epub 2021 Jan 7.
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 N and C 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 δ N and δ C, respectively, whereas in C. porosus, δ N and δ C were 1.79 ± 0.09‰ and 1.31 ± 0.17‰ greater in embryos than their mothers.
两段含有两胎和三胎胚胎的加勒比拟尖吻鲛（Rhizoprionodon porosus）和一段含有 11 尾小拟真鲨（Carcharhinus porosus）胚胎的样本的同位素值显示，与母体相比，N 和 C 同位素均有富集。在拟尖吻鲛中，胚胎的δN 和 δC 同位素值分别比母体高 3.06±0.07‰和 0.69±0.15‰，而在小拟真鲨中，胚胎的δN 和 δC 同位素值比母体高 1.79±0.09‰和 1.31±0.17‰。
