期刊
FISHERIES RESEARCH
卷 254, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.fishres.2022.106395
关键词
Salmonids; Size class segregation; Depth distribution; Seasonal temperatures; Great Lakes; Acoustic telemetry; Pop-off data storage tags
类别
资金
- Canada-Ontario Agreement on Great Lakes Water Quality and Ecosystem Health
- Canada Research Chair
- University of Windsor
- NSERC
- Great Lakes Fishery Commission [2013_BIN_44024]
- way of Great Lakes Restoration Initiative appropriations [GL-00E23010]
- Canadian Foundation for Inno-vation (CFI)
- Ontario Ministry of Research, Innovation and Science
This study used data storage tags and acoustic telemetry to investigate the seasonal home ranges and depth-temperature distributions of different size classes of Chinook salmon in Lake Ontario. The results showed moderate horizontal segregation between immature and sub-adult individuals, with the greatest segregation occurring in the fall and spring. Additionally, there were differences in depth and temperature occupancy between immature and sub-adult individuals.
Chinook salmon (Oncorhynchus tshawytscha) have been observed to spatially segregate based on body size in the marine environment. In their introduced range in the Laurentian Great Lakes, where Chinook salmon support important recreational fisheries, very little is known about their seasonal habitat use, including effects of body size on horizontal and vertical distributions. This study quantified the seasonal home ranges and distributions by depth and temperature of two size classes of Chinook salmon in Lake Ontario using pop-off data storage tags (pDST) from 2014 to 2016 and acoustic telemetry from 2017 to 2020. Moderate overlap occurred between immature (age classes 1 and 2) and sub-adult (age classes 3 and 4) individuals at the 50% home range level, a measure of horizontal segregation, with the greatest segregation during the fall and spring. Depth and temperature occupancy for two immature individuals in fall and winter also differed from those of sub-adults. This study is the first to examine the overlap in horizontal and vertical distributions between Chinook salmon size classes in the Great Lakes and contributes key information on their depth and temperature distributions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据