2026-04-14T03:58:01Zhttps://recercat.cat/oai/request

oai:recercat.cat:20.500.12327/12312025-10-22T11:33:56Zcom_2072_4428com_2072_4427col_2072_487898

00925njm 22002777a 4500 dc Prado, Patricia author Cabanes, Pep author Hernandis, Sebastián author García-March, Rafael author Tena, José author 2021-03-16 The pen shell, Pinna nobilis L. is critically endangered by the spread of a haplosporidan parasite. Stable isotopes have been shown an association with dietary assimilation, trophic level, and body condition, and can provide valuable information for ex situ conservation and breeding. In this context, the aim of this study was to investigate the nutritional status of individuals using δ13C and δ15N patterns across pen shell body tissues as tracers of elemental incorporation from treatment diets based on commercial gels and living phytoplankton and/or sediment. Further comparisons were also conducted with field animals and diets to better understand nutritional needs. Captive individuals, were enriched in δ13C and δ15N (~18.9 and 1.3‰, respectively), suggesting severe nutritional stress and utilization of own N and C pools, especially muscle. The mixing model for field individuals evidenced a large contribution from the zooplankton fraction (34.9%), which was further confirmed by experimental feeding with Artemia nauplii. Prado, Patricia, Pep Cabanes, Sebastián Hernandis, Rafael García-March, and José Tena. 2021. "Stable Isotope Analyses Reveal Major Nutritional Deficiencies In Captive Vs. Field Juvenile Individuals Of Pinna Nobilis". Marine Environmental Research 168: 105304. doi:10.1016/j.marenvres.2021.105304. 0141-1136 http://hdl.handle.net/20.500.12327/1231 https://doi.org/10.1016/j.marenvres.2021.105304 Stable isotope analyses reveal major nutritional deficiencies in captive vs. field juvenile individuals of Pinna nobilis