温度和深度驱动南大西洋西部鳞沙丁鱼(Harengula sp.)的种群结构

IF 2.2 3区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Ana Beatriz Alves Bennemann, Jéssica Fernanda Ramos Coelho, Pedro Hollanda-Carvalho, Fabio Di Dario, João Luiz Gasparini, Ricardo Marques Dias, Liana de Figueiredo Mendes, Sergio Maia Queiroz Lima
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引用次数: 0

摘要

了解影响海洋系统种群结构的环境特征对于可持续渔业管理至关重要。在沙丁鱼和鲱鱼中,温度通常是影响种群数量的重要因素。在此,我们研究了巴西沿岸鳞沙丁鱼 Harengula sp.种群结构变化的假设,以及将高度可变的线粒体控制区作为分子标记进行连续研究的可能性。我们对来自巴西沿海10个地点以及南大西洋西部的费尔南多-德诺罗尼亚群岛(FNO,大洋性)和阿布罗尔霍斯群岛(ABR,大陆性)的152条Harengula sp.的线粒体控制区进行了测序。分子变异和单倍型网络分析表明,Harengula sp.分为三个种群:一个种群位于 FNO,因水深而与大陆隔离;另两个种群位于巴西海岸,主要因温度而隔离。考虑到 FNO 是一个海洋保护区,而且该群岛的沙丁鱼形成了一个与海岸隔离的种群,因此应通过环境机构和当地社区的参与性合作对其渔业进行单独管理。此外,该研究还表明,随着其他地区样本的获得,mtDNA 控制区可用于 Harengula sp.的长期系统地理学研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Temperature and depth drive population structure of the scaled sardine (Harengula sp.) in the western South Atlantic

Temperature and depth drive population structure of the scaled sardine (Harengula sp.) in the western South Atlantic

Understanding environmental features that impact population structure in marine systems is fundamental for sustainable fisheries management. In sardines and herrings, temperature is usually indicated as an important attribute in recruitment. Here, we investigate the hypothesis of additional structuring along the Brazilian coast in the scaled sardine Harengula sp. and possibility of using the highly variable mitochondrial control region as a molecular marker along continuous studies. We sequenced the mitochondrial control region of 152 individuals of Harengula sp. from 10 locations along the Brazilian coast and the archipelagoes of Fernando de Noronha (FNO, oceanic) and Abrolhos (ABR, continental) in the western South Atlantic. Analyses of molecular variance and haplotype network indicate that Harengula sp. is structured in three populations: one in FNO, isolated from the mainland by depth; and two in the Brazilian coast, mainly separated by temperature. Considering that FNO is a marine protected area and that sardines from this archipelago form a stock separated from the coast, their fisheries should be managed separately by participative cooperation among environmental agencies and local community. Additionally, it indicates that the mtDNA control region can be used in a long-term phylogeographic study of Harengula sp. as samples from other localities are obtained.

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来源期刊
Hydrobiologia
Hydrobiologia 生物-海洋与淡水生物学
CiteScore
5.40
自引率
11.50%
发文量
288
审稿时长
4.9 months
期刊介绍: Hydrobiologia publishes original research, reviews and opinions regarding the biology of all aquatic environments, including the impact of human activities. We welcome molecular-, organism-, community- and ecosystem-level studies in contributions dealing with limnology and oceanography, including systematics and aquatic ecology. Hypothesis-driven experimental research is preferred, but also theoretical papers or articles with large descriptive content will be considered, provided they are made relevant to a broad hydrobiological audience. Applied aspects will be considered if firmly embedded in an ecological context.
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