淡水鼓在其分布区北部附近的动态速率:环境与招募关系的证据

IF 1.4 4区 环境科学与生态学 Q3 ECOLOGY
Marshall Stuart, Nicholas Kludt, Mark A. Pegg, Federica Montesanto, Cade Lyon, Connor J. Chance-Ossowski
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引用次数: 0

摘要

估算种群动态速率是现代渔业管理中最成熟、最广为人知的组成部分之一,但对于未受威胁的本地物种却很少收集这方面的信息。对代表性不足的本土鱼类的贬义看法导致了对这些物种的研究和管理工作的匮乏。对于北美分布最广的淡水鱼之一--淡水鼓鲉(Aplodinotus grunniens,Rafinesque,1819 年),我们试图缩小这一知识差距。我们计算了淡水鱼分布区最北部水域(即哈德逊湾)的生长、死亡和繁殖估计值。我们对生长(K,布罗迪生长系数)的估计值与最南端美国阿拉巴马州的研究结果相似。对年死亡率(4-10%)和寿命(62 岁)的估计与常年文献中观察到的纬度趋势一致。我们发现了繁殖变异的证据(繁殖变异指数 = 0.53),生长季节度日与年级强度呈正相关。寒冷季节的排水量和上升率等水文变量则与繁殖率呈负相关。这项研究有助于深入了解淡水鼓浪屿种群的调节因素,并将为管理和保护这一广泛分布但未得到充分重视的物种提供有用信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Dynamic rates of Freshwater Drum near the northern extent of their range: evidence of environment-recruitment relationships

Dynamic rates of Freshwater Drum near the northern extent of their range: evidence of environment-recruitment relationships

Estimation of population dynamic rates is one of the most established and widely recognized components of modern fisheries management, yet this information is rarely collected for non-threatened native species. Pejorative views of native, underrepresented fish have contributed to a dearth of research and management efforts for these species. We sought to reduce this knowledge gap for one of the most widely distributed freshwater fish in North America, Freshwater Drum Aplodinotus grunniens (Rafinesque, 1819). We calculated estimates of growth, mortality, and recruitment from lotic environments in the most northern drainage of their range (i.e., Hudson Bay). Our estimates of growth (K, Brody growth coefficient) are similar to studies as far south as Alabama, USA. Estimates of annual mortality (4–10%) and longevity (62 years) are consistent with latitudinal trends observed in the standing literature. We found evidence of recruitment variability (recruitment variability index = 0.53), with a positive association between growing season degree days and year-class strength. Hydrologic variables of discharge during the cold season and rise rate were found to have negative relationships to recruitment. This research gives insight into factors regulating Freshwater Drum populations and will provide useful information for the management and conservation of this widespread but underappreciated species.

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来源期刊
Environmental Biology of Fishes
Environmental Biology of Fishes 环境科学-海洋与淡水生物学
CiteScore
2.60
自引率
14.30%
发文量
169
审稿时长
3 months
期刊介绍: Environmental Biology of Fishes is an international journal that publishes original studies on the ecology, life history, epigenetics, behavior, physiology, morphology, systematics and evolution of marine and freshwater fishes. Empirical and theoretical papers are published that deal with the relationship between fishes and their external and internal environment, whether natural or unnatural. The journal concentrates on papers that advance the scholarly understanding of life and draw on a variety of disciplines in reaching this understanding. Environmental Biology of Fishes publishes original papers, review papers, brief communications, editorials, book reviews and special issues. Descriptions and submission requirements of these article types can be found in the Instructions for Authors.
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