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Design and Relative Efficiency of a Bow-Mounted Pushnet for Sampling Juvenile Pelagic Fishes

 

作者: WilliamH. Kriete,   JosephG. Loesch,  

 

期刊: Transactions of the American Fisheries Society  (Taylor Available online 1980)
卷期: Volume 109, issue 6  

页码: 649-652

 

ISSN:0002-8487

 

年代: 1980

 

DOI:10.1577/1548-8659(1980)109<649:DAREOA>2.0.CO;2

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

A bow-mounted pushnet designed to sample near-surface young-of-the-year pelagic fishes had a significantly higher catch rate than a stern trawl previously used. The ratio of catches (numbers of fish) for simultaneous sampling with the pushnet and two identical trawls was 23:3:1. Both gear sampled the same population with respect to fish length. The pushnet requires a crew of only two, can be operated in shoal water, and multiple net installation is possible. The outboard vessel-pushnet unit is highly mobile because the frame is readily raised for cruising and swung aft, but not detached, for trailering.

 

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