Use of multielement stable isotope ratios to investigate ontogenetic movements of Micropogonias furnieri in a tropical Brazilian estuary

Use of multielement stable isotope ratios to investigate ontogenetic movements of Micropogonias furnieri in a tropical Brazilian estuary
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利用多元素稳定同位素比率研究巴西热带河口 Micropogonias Furnieri 的个体发育运动

DOI:
10.1139/cjfas-2017-0148
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发表时间:
2018
影响因子:
2.4
通讯作者:
Pizzochero A
Pizzochero A
中科院分区:
农林科学2区
文献类型:
--
作者:
Pizzochero A

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白口黄花鱼(Micropogonias puereri)是一种长寿的鱼类,在西大西洋具有很高的商业价值。在这里,我们使用稳定的碳,硫,氮和同位素生态位指标(SIBER)的同位素比率,以研究摄食习惯和跟踪栖息地使用的whitemouth croakers在瓜纳巴拉湾,在里约热内卢州,巴西的河口。我们的研究结果强调了与大小相关的栖息地分离,小型幼鱼(<30 cm)主要居住在河口内,大型成鱼(>60 cm)主要在大陆架沃茨觅食。中型成鱼(30-60厘米)似乎在多个沿海和大陆架生境中觅食。此外,它们的摄食生态表现出强烈的时间差异,与它们生活的生态系统的海洋学特征的季节性变化有关,在较小程度上与年际变化有关。总体而言,这些差异的生态特征表明,(1)成年和少年whitemouth croakers应被视为食物网的不同组成部分,(2)这些栖息地的保护应优先考虑,以更好地管理和维持沿海渔业在瓜纳巴拉湾。
The whitemouth croaker,Micropogonias furnieri, is a long-lived fish of high commercial importance in the western Atlantic Ocean. Here, we used stable isotope ratios of carbon, sulfur, and nitrogen and isotopic niche metrics (SIBER) to study feeding habits and track habitat use by whitemouth croakers in Guanabara Bay, an estuary in Rio de Janeiro state, Brazil. Our results highlighted size-related habitat segregation, with small juvenile fishes (<30 cm) residing mostly inside estuaries and large adult fishes (>60 cm) feeding mainly in Continental Shelf waters. Medium adult fishes (30–60 cm) appear to feed in multiple coastal and Continental Shelf habitats. Moreover, their feeding ecology showed strong temporal differences, linked with seasonal and, to a lesser extent, interannual variation in oceanographic features of the ecosystem in which they live. Overall, these differences in ecological features suggest that (1) adult and juvenile whitemouth croakers should be treated as different components of the food web and (2) the conservation of these habitats should be prioritized to better manage and sustain the coastal fisheries in Guanabara Bay.
白口黄鱼(Micropogonias Furnieri)被困在淡水沿海泻湖中:淡水和海洋对耳石化学影响的自然比较
DOI: --
发表时间: 2010
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Rosa da Silva Santos;J. P. C. Silva;M. J. D. Costa;F. Araújo
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巴西东南部富营养化沿海海湾颗粒有机物的分子和同位素特征
DOI: 10.1016/j.csr.2009.09.007
发表时间: 2009
影响因子: 2.3
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通讯作者: A. Wagener
同位素新闻
DOI: --
发表时间: 2015
期刊:
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作者:
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通讯作者: 二瓶直登