峡谷型水库中生境对梭鲈0+幼鱼丰度、大小和生长率的影响

IF 1.6 3区 农林科学 Q3 FISHERIES
Petr Blabolil, Jiří Peterka, Martin Čech, Tomáš Jůza
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引用次数: 3

摘要

2008年5月26日和29日白天,6月5日和11日夜间,在捷克共和国Římov峡谷型水库附近的浅海上层和浅海深处,对早期梭鲈0+幼鱼的丰度、大小(标准长度,LS)和生长速率进行了监测。0+鱼类在水库中段丰度最高,其LS从大坝上游向水库支流方向增加。此外,较大和较老的棘鱼0+幼鱼在白天迁移到深海层。海洋温度和生产力(以叶绿素-a浓度表示)梯度是影响鱼类分布和生长的主要驱动因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of habitat on abundance, size and growth rate of pikeperch (Sander lucioperca) 0+ juveniles in a canyon-shaped reservoir

Abundance, size (standard length, LS) and growth rate of early pikeperch (Sander lucioperca) 0+ juveniles were monitored in the epipelagic and bathypelagic layers near the dam, and in the middle and upper sections at the canyon-shaped Římov Reservoir (Czech Republic) during the day on 26 and 29 May, and during the night on 5 and 11 June in 2008. The greatest abundance of 0+ fish was observed in the middle section of the reservoir and their LS increased upstream from the dam towards the reservoir's tributary. Moreover, larger and older pikeperch 0+ juveniles migrated to the bathypelagic layer during the day. The epilimnetic temperature and productivity (expressed as chlorophyll-a concentration) gradients were suggested as the main drivers affecting the distribution and growth of the fish.

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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.
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