Assessing Invasive Carp in the Neosho River-Grand Lake System of Kansas and Oklahoma

IF 0.7 4区 农林科学 Q4 FISHERIES Journal of Applied Ichthyology Pub Date : 2024-09-17 DOI:10.1155/2024/4270117
Ethan J. Rasset, Hae H. Kim, Ben C. Neely, Quinton E. Phelps, Greg W. Whitledge
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Abstract

Invasive carp populations have purported a negative influence on native biota at high densities. These invasive fishes (i.e., bighead carp Hypophthalmichthys nobilis, silver carp Hypophthalmichthys molitrix, grass carp Ctenopharyngodon idella, and black carp Mylopharyngodon piceus) each exhibit similar life history characteristics. In the Neosho River-Grand Lake system (i.e., John Redmond Reservoir, Kansas, downstream to Grand Lake O’ the Cherokees, Oklahoma), only bighead carp and grass carp have been documented to date. The distribution and status of bighead carp throughout this system were previously unknown due to limited historical data and low abundance. While few bighead carp are encountered within this system, grass carp exhibited relatively higher abundance a were used to provide insights into bighead carp. Captures of both species were used to inform management and suppression efforts. Sampling locations (n = 18) were established for environmental DNA analyses throughout the Neosho River-Grand Lake system. We sampled 13 sites using a suite of gears for standardized targeted fish sampling. All invasive carp were measured, sexed, and otoliths removed for ageing and microchemical analysis. Grass carp were processed for ploidy testing following the U.S. Fish and Wildlife Service protocol. Environmental DNA analyses generated positive results for the eDNA presence of bighead carp and silver carp. Otolith age estimates suggest fish are long lived and supported by multiple year classes. Additionally, a sampled two-year-old grass carp demonstrates spawning and recruitment potential. Otolith microchemistry suggests largescale broad movement patterns. Ploidy testing confirmed the first documented evidence of diploid grass carp in the Neosho River-Grand Lake system and revealed reproductive viability. Our results may provide future insights into locations for containment, removal, and/or eradication.

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评估堪萨斯州和俄克拉荷马州尼奥索河-大湖系统中的入侵鲤鱼
据称,入侵鲤鱼种群在高密度繁殖时会对本地生物群产生负面影响。这些入侵鱼类(即鳙鱼 Hypophthalmichthys nobilis、鲢鱼 Hypophthalmichthys molitrix、草鱼 Ctenopharyngodon idella 和黑鲤 Mylopharyngodon piceus)各自表现出相似的生活史特征。在尼奥索河-大湖系统(即堪萨斯州的约翰-雷德蒙德水库,下游至俄克拉荷马州的切诺基大湖)中,迄今仅记录到鳙鱼和草鱼。由于历史数据有限且丰度较低,鲢鱼在整个系统中的分布和状况以前并不为人所知。虽然在该系统中很少遇到鲢鱼,但草鱼的数量相对较多,因此可用于了解鲢鱼的情况。两种鱼类的捕获量都被用来为管理和抑制工作提供信息。我们在整个尼欧索河-大湖系统中设立了取样点(n = 18),用于环境 DNA 分析。我们在 13 个地点进行了取样,使用了一套标准化的目标鱼类取样工具。我们对所有入侵鲤鱼进行了测量、性别鉴定,并取出耳石进行年龄测定和微化学分析。草鱼按照美国鱼类和野生动物管理局的规程进行了倍性检测。环境 DNA 分析得出了鳙鱼和鲢鱼的 eDNA 阳性结果。耳石年龄估计结果表明,草鱼寿命较长,并有多个年级。此外,一条采样的两岁草鱼显示了产卵和繁殖的潜力。耳石的微化学性质表明了大规模的广泛运动模式。倍性测试首次证实了新州河-大湖系统中存在二倍体草鱼的证据,并揭示了草鱼的繁殖能力。我们的研究结果可能会为今后确定遏制、清除和/或根除草鱼的地点提供启示。
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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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