实验条件下幼年巴西鲻 Mugil liza 的元素周转率和营养级分馏

Elemental turnover rates and trophic discrimination in juvenile Lebranche mullet Mugil liza under experimental conditions.

作者信息

Oliveira M C L M, Mont'alverne R, Sampaio L A, Tesser M B, Ramos L R V, Garcia A M

机构信息

Ichthyology Laboratory, Oceanography Institute, Rio Grande Federal University, PO box 474, Rio Grande, 96203-900, RS, Brazil.

Laboratório de Piscicultura Estuarina e Marinha, Instituto de Oceanografia, Universidade Federal do Rio Grande, Caixa Postal 474, Rio Grande, Rio Grande do Sul, 96203-900, Brazil.

出版信息

J Fish Biol. 2017 Oct;91(4):1241-1249. doi: 10.1111/jfb.13408. Epub 2017 Sep 14.

DOI:10.1111/jfb.13408

PMID:28905375

Abstract

The aim of this study was to determine the isotopic-turnover rate (R ) and trophic-discrimination factor (F ) in muscle tissues of Lebranche mullet Mugil liza fed an experimental diet (δ C = -27·1‰; δ N = 1·0‰). Juvenile M. liza exhibited a relatively fast R , with a half-life (t ) of only 16 and 14 days for δ C and δ N respectively and a nearly complete isotopic turnover (t ) of 68 and 60 days for δ C and δ N.

摘要

本研究的目的是测定以实验性饲料（δC = -27.1‰；δN = 1.0‰）喂养的列氏鲻 Mugil liza 肌肉组织中的同位素周转率（R）和营养歧视因子（F）。幼年列氏鲻表现出相对较快的R，δC和δN的半衰期（t）分别仅为16天和14天，δC和δN的近乎完全同位素周转（t）分别为68天和60天。