Instream barriers contribute to population isolation of a small-bodied, benthic, headwater-specialist fish (Percidae)

IF 1.6 3区 农林科学 Q3 FISHERIES Ecology of Freshwater Fish Pub Date : 2024-02-12 DOI:10.1111/eff.12769
River A. Watson, Alexis V. Culley, Catherine G. Haase, Matthew R. Thomas, Stephanie L. Brandt, Michael A. Floyd, Rebecca E. Blanton
{"title":"Instream barriers contribute to population isolation of a small-bodied, benthic, headwater-specialist fish (Percidae)","authors":"River A. Watson,&nbsp;Alexis V. Culley,&nbsp;Catherine G. Haase,&nbsp;Matthew R. Thomas,&nbsp;Stephanie L. Brandt,&nbsp;Michael A. Floyd,&nbsp;Rebecca E. Blanton","doi":"10.1111/eff.12769","DOIUrl":null,"url":null,"abstract":"<p>Genetic differentiation in aquatic systems is often driven by geographic distance (isolation by distance) due to the linear and hierarchical distribution of populations, but habitat fragmentation often exacerbates this effect by decreasing population connectivity, leading to isolation by resistance. Stronghold populations of the Kentucky Arrow Darter (<i>Etheostoma spilotum</i>) in the South Fork Kentucky River system within the Daniel Boone National Forest of eastern Kentucky, USA have a high population structure not explained by distance alone. Higher than expected levels of genetic differentiation among proximate populations were hypothesized to be driven by land-use change, but this was not previously tested. Here we use a riverscape genetics approach to test for the effects of natural landscape features including slope, elevation and stream size, and anthropogenically altered habitat features, including specific conductance (conductivity), culverts and forest cover, on population connectivity and genetic diversity of <i>E. spilotum</i>. We found isolation of populations among all tributary systems and a strong, positive relationship between genetic and geographic distances as expected. However, high conductivity levels due to surface coal mining best explain the population structure observed. We also found signatures of low genetic diversity overall and indicators that culverts may limit upstream movements of <i>E. spilotum</i>. This study provides a novel fine-scale view of the effects of instream and landscape features on connectivity among, and genetic diversity within populations of an imperilled, small-bodied, benthic fish.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12769","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecology of Freshwater Fish","FirstCategoryId":"97","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/eff.12769","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"FISHERIES","Score":null,"Total":0}
引用次数: 0

Abstract

Genetic differentiation in aquatic systems is often driven by geographic distance (isolation by distance) due to the linear and hierarchical distribution of populations, but habitat fragmentation often exacerbates this effect by decreasing population connectivity, leading to isolation by resistance. Stronghold populations of the Kentucky Arrow Darter (Etheostoma spilotum) in the South Fork Kentucky River system within the Daniel Boone National Forest of eastern Kentucky, USA have a high population structure not explained by distance alone. Higher than expected levels of genetic differentiation among proximate populations were hypothesized to be driven by land-use change, but this was not previously tested. Here we use a riverscape genetics approach to test for the effects of natural landscape features including slope, elevation and stream size, and anthropogenically altered habitat features, including specific conductance (conductivity), culverts and forest cover, on population connectivity and genetic diversity of E. spilotum. We found isolation of populations among all tributary systems and a strong, positive relationship between genetic and geographic distances as expected. However, high conductivity levels due to surface coal mining best explain the population structure observed. We also found signatures of low genetic diversity overall and indicators that culverts may limit upstream movements of E. spilotum. This study provides a novel fine-scale view of the effects of instream and landscape features on connectivity among, and genetic diversity within populations of an imperilled, small-bodied, benthic fish.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
溪流障碍导致一种体型较小、底栖、专攻上游水域的鱼类(鲈科)的种群隔离
由于种群的线性和分级分布,水生系统中的遗传分化往往受地理距离(距离隔离)的驱动,但栖息地的破碎化往往会降低种群的连通性,从而加剧这种效应,导致阻力隔离。在美国肯塔基州东部丹尼尔-布恩国家森林内的肯塔基州南叉河水系中,肯塔基箭镖鱼(Etheostoma spilotum)的据点种群具有高度的种群结构,这种结构不能仅用距离来解释。近缘种群之间高于预期水平的遗传分化被假定是由土地利用变化驱动的,但此前并未进行过测试。在此,我们采用河流景观遗传学方法来检验自然景观特征(包括坡度、海拔和溪流大小)和人为改变的生境特征(包括比电导率、暗渠和森林覆盖率)对E. spilotum种群连通性和遗传多样性的影响。我们发现,在所有支流系统中都存在种群隔离现象,遗传距离与地理距离之间存在很强的正相关关系。然而,地表采煤造成的高电导率水平最能解释所观察到的种群结构。我们还发现了总体遗传多样性较低的特征,以及暗渠可能限制 E. spilotum 向上游移动的迹象。这项研究提供了一个新颖的细观视角,即溪流和景观特征对一种濒临灭绝的小型底栖鱼类种群之间的连通性和种群内部遗传多样性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Ecology of Freshwater Fish
Ecology of Freshwater Fish 农林科学-海洋与淡水生物学
CiteScore
4.10
自引率
0.00%
发文量
45
审稿时长
12-24 weeks
期刊介绍: Ecology of Freshwater Fish publishes original contributions on all aspects of fish ecology in freshwater environments, including lakes, reservoirs, rivers, and streams. Manuscripts involving ecologically-oriented studies of behavior, conservation, development, genetics, life history, physiology, and host-parasite interactions are welcomed. Studies involving population ecology and community ecology are also of interest, as are evolutionary approaches including studies of population biology, evolutionary ecology, behavioral ecology, and historical ecology. Papers addressing the life stages of anadromous and catadromous species in estuaries and inshore coastal zones are considered if they contribute to the general understanding of freshwater fish ecology. Theoretical and modeling studies are suitable if they generate testable hypotheses, as are those with implications for fisheries. Manuscripts presenting analyses of published data are considered if they produce novel conclusions or syntheses. The journal publishes articles, fresh perspectives, and reviews and, occasionally, the proceedings of conferences and symposia.
期刊最新文献
Issue Information Correction to ‘The influence of flow on movement of a headwater specialist in an intermittent urban headwater stream’ Introduction to the Proceedings of the Sixth ‘Advances in the Population Dynamics of Stream Salmonids’ Symposium Dispersal and gene flow in anadromous salmonids: A systematic review Ichthyoplankton dynamics in the Brazilian Pantanal: Contribution of an important tributary and maintenance of connectivity
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1