遗传分析揭示佛罗里达鲈鱼单倍型从水库扩散到德克萨斯州中部的河流

IF 2 3区农林科学 Q2 FISHERIES

Transactions of The American Fisheries Society Pub Date : 2012-07-30 DOI:10.1080/00028487.2012.690814

Jesse W. Ray, M. Husemann, R. King, P. Danley

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引用次数: 14

摘要

摘要本研究分析了德克萨斯州中部无放养、可涉水溪流中大口黑鲈(Micropterus salmoides)推定种群的遗传结构。为本项目取样的69条鱼生成了线粒体d -环序列。此外，还对德克萨斯州公园和野生动物部(TPWD)提供的27份大口鲈鱼和佛罗里达鲈鱼标本进行了测序。TPWD样本代表了种群谱系以及来自采样区域以外的野生鱼类。我们的分析显示，在所有采样地点都存在大口黑鲈和佛罗里达黑鲈线粒体单倍型。非本地佛罗里达鲈鱼的单倍型占所有单倍型的26%。佛罗里达鲈鱼单倍型在采样地点的存在表明放养的影响远远超出了管理水库。外源遗传物质的混合可以增加本地种群的遗传多样性，但近交抑制、竞争和其他负面影响令人担忧。

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Genetic Analysis Reveals Dispersal of Florida Bass Haplotypes from Reservoirs to Rivers in Central Texas

Abstract We analyzed the genetic structure of putative largemouth bass Micropterus salmoides populations in nonstocked, wadeable streams of central Texas. Mitochondrial D-loop sequences were generated for 69 fish sampled for this project. In addition, 27 largemouth bass and Florida bass M. floridanus specimens provided by the Texas Parks and Wildlife Department (TPWD) were sequenced. The TPWD samples represented stock lineages as well as wild fish from outside of the sampling region. Our analyses revealed the presence of both largemouth bass and Florida bass mitochondrial haplotypes at all sampling locations. Haplotypes of the nonnative Florida bass accounted for 26% of all haplotypes. The presence of Florida bass haplotypes at the sampling locations indicates that the influence of stocking reaches far beyond managed reservoirs. The admixture of nonnative genetic material can increase genetic diversity of native populations, but outbreeding depression, competition, and other negative impacts are of concer...

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来源期刊

Transactions of The American Fisheries Society 农林科学-渔业

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

8-16 weeks

期刊介绍： Transactions of the American Fisheries Society is a highly regarded international journal of fisheries science that has been published continuously since 1872. It features results of basic and applied research in genetics, physiology, biology, ecology, population dynamics, economics, health, culture, and other topics germane to marine and freshwater finfish and shellfish and their respective fisheries and environments.