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Caught on camera: quantifying fish behaviour in relation to sorting grids

delete2025-10-08
delete0
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OA
AI
N
Nadine Jacques *
B
Bent Herrmann
M
Manu Sistiaga
J
Jesse Brinkhof
J
Juan Santos-Echeandía
I
Ilmar Brinkhof
DOI：10.1007/s11160-025-10003-6delete
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摘要

摘要

En 中文
本研究分析了鳕鱼（Gadus morhua）、黑线鳕（Melanogrammus aeglefinus）、绿鳕（Pollachius virens）和红鱼（Sebastes spp.）与尺寸筛选网格的相互作用行为，数据来源于巴伦支海拖网作业期间获取的视频记录。研究量化了鱼类接触网格的方式、接触频率、逃脱成功率，以及它们在逃脱过程中是否通过挤压自身穿过网格条之间的间隙。鱼类主要通过头部先穿过网格条或背部先接触网格的方式进行逃脱。然而，这几种方式合计分别仅占鳕鱼、黑线鳕、绿鳕和红鱼所有网格接触事件的30%、36%、23%和33%。总体而言，所有尺寸的鳕鱼、黑线鳕和红鱼约35%的网格接触事件以及绿鳕14%的网格接触事件，不会导致与尺寸相关的通过网格的概率。与另外三种鱼类相比，黑线鳕的网格接触频率最高。平均而言，鳕鱼需要至少三次尝试才能通过网格逃脱，而黑线鳕、绿鳕和红鱼则需要大约两次尝试。挤压行为对所有四种鱼类的逃脱都是重要因素，估计有42%的鳕鱼、6%的黑线鳕、53%的绿鳕和17%的红鱼会采用这种方式。这些量化行为解释了为何鱼类筛选网格的尺寸选择性被认为是不理想的。
Keyword:
Size-sorting grids
Demersal trawl
Size selectivity
Fish behaviour
Video analysis

期刊

Reviews in Fish Biology and Fisheries 封面图
Reviews in Fish Biology and Fisheries
IF:
4.6
论文数:
1.3K
被引数:
5.1K

机构

T
The Arctic University of Norway
学者数:
71
论文数: 44
被引数: 0
T
Thunen Institute of Baltic Sea Fisheries
学者数:
19
论文数: 12
被引数: 0
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