Seasonal bathymetric distributions of three coastal flatfishes: estimation from logbook data for trawl and gillnet fisheries

Fisheries Research Volume 233 Page 105733- published_at 2020-09-12
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Title ( eng )
Seasonal bathymetric distributions of three coastal flatfishes: estimation from logbook data for trawl and gillnet fisheries
Creator
Yamada Manabu
Yamanobe Akibumi
Kurita Yutaka
Source Title
Fisheries Research
Volume 233
Start Page 105733
Abstract
The present study aims to clarify the seasonal bathymetric distributions of three coastal flatfishes (stone flounder, marbled flounder, and Japanese flounder) that are caught mainly by bottom trawls and gillnets off the coast of Fukushima, Japan, by using logbook data. All three species were found to have specific spawning depths, i.e., depths of 40–80 m, 20–40 m, and 10–60 m for stone, marbled, and Japanese flounders, respectively, with extremely high catch-per-unit-effort during their spawning seasons, reflecting spawning ground formation. Furthermore, Japanese flounder showed a tendency to expand their distribution offshore to depths deeper than 100 m after October. These results indicate interspecific variations in migration and aggregation patterns. Using logbook data and considering the seasonal catchability of each fishing gear enabled us to understand the seasonal bathymetric distribution of each species and the depths of their spawning grounds.
Keywords
CPUE
flatfish
inshore-offshore migration
hotspot
spawning ground
Language
eng
Resource Type journal article
Publisher
Elsevier
Date of Issued 2020-09-12
Rights
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
Publish Type Accepted Manuscript
Access Rights open access
Source Identifier
[DOI] https://doi.org/10.1016/j.fishres.2020.105733 isVersionOf
助成機関名
日本学術振興会
Japan Society for the Promotion of Science
助成機関識別子
[Crossref Funder] https://doi.org/10.13039/501100001691
研究課題名
緯度間適応の方向性が潜在的成長速度の変異を規定するか?冷水性魚類での検証
緯度間適応の方向性が潜在的成長速度の変異を規定するか?冷水性魚類での検証
研究課題番号
19K06207