Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/1249
Title: Increasing codend mesh openings: An appropriate strategy for improving the selectivity of penaeid fishing gears in an Australian estuary?
Contributor(s): Macbeth, William G (author); Broadhurst, M (author); Millar, RB (author); Smith, Stephen D (author)
Publication Date: 2005
DOI: 10.1071/MF04256
Handle Link: https://hdl.handle.net/1959.11/1249
Abstract: This study investigates the effects of increasing the lateral mesh openings in codends on the size and species selectivity of lagoon and river seines and a stow net used to target penaeid prawns (eastern king ('Penaeus plebejus'), school ('Metapenaeus macleayi') and greasyback prawns ('M. bennettae')) in Wallis Lake, New South Wales, Australia. Compared with conventional codends made from 36-mm diamond-shaped mesh, new designs made from 25- and 29-mm mesh hung on the bar (i.e. square-shaped mesh) significantly reduced the catches of lagoon seine. In contrast, owing to gear-specific operational characteristics such as a slower hauling speed, there were few detectable effects of altering mesh openings in the codend of the river seine. The results are discussed in terms of the differences in the gears used and their particular selection mechanisms. We conclude that, pending further trials, codends made from a mesh size approaching 29mm, hung on the bar, would provide appropriate size- and species-selection for Wallis Lake stow nets and lagoon seines. Further research is required, however, to examine the utility of operational changes to river seines and/or alterations to mesh size and configuration in the wings and body to improve selectivity.
Publication Type: Journal Article
Source of Publication: Marine and Freshwater Research, 56(6), p. 889-900
Publisher: CSIRO Publishing
Place of Publication: Australia
ISSN: 1448-6059
1323-1650
Fields of Research (FoR) 2008: 070403 Fisheries Management
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Publisher/associated links: http://www.publish.csiro.au/?act=view_file&file_id=MF04256.pdf
Appears in Collections:Journal Article

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