Isotopic enrichment in Rhizoprionodon porosus (Poey, 1861) and Carcharhinus porosus (Ranzani, 1840) embryos

• Published in: Journal of fish biology Vol. 98; no. 5; pp. 1456 - 1458
• Main Authors: Garzón‐Peña, Lina Vanesa, Barrera‐García, Angelica, Delgado‐Huertas, Antonio, Polo‐Silva, Carlos Julio
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.05.2021; Wiley Subscription Services, Inc
• Subjects: Animal embryos; Carcharhinus porosus; Colombian Caribbean; elasmobranch; Embryos; Gulf of Salamanca; Isotopes; Isotopic enrichment; Marine fishes; mother–offspring interaction; Nitrogen isotopes; Rhizoprionodon porosus; Sharks; stable isotope analysis; Colombian Caribbean; mother-offspring interaction; stable isotope analysis; elasmobranch; Gulf of Salamanca
• ISSN: 0022-1112; 1095-8649
• DOI: 10.1111/jfb.14651

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.