Trawl Selectivity Estimates of Thryssa dussumieri (Valenciennes, 1848) in Square and Diamond Mesh Codends

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dc.contributor.authorMadhu, V.R.
dc.contributor.authorRemesan, M.P.
dc.contributor.authorMeenakumari, B.
dc.date.accessioned2017-02-20T08:12:10Z
dc.date.available2017-02-20T08:12:10Z
dc.date.issued2016
dc.description.abstractCodend selectivity of Thryssa dussumieri, an important trawl resource along Gujarat coast was studied using covered codend method. The selectivity estimates were worked out for 40 mm diamond and square mesh codends by staked haul method to account variation associated with multiple hauls considered for deriving the selectivity. The length at 50% retention of the species for the 40 mm diamond and square mesh codends were worked out as 8.84±0.16 and 10.20±0.12 cm respectively. The selection range, selection factor and selection ratio for the diamond mesh codend was 7.96±0.42 cm, 2.21 and 0.9 respectively and for the 40 mm square mesh codend these values were 3.76±0.19 cm, 2.55 and 0.37 respectively. Considering the length at first maturity of the species as 125 mm, the optimum mesh size for 40 mm diamond mesh and square mesh codend were worked out as 56.6 and 49 mm respectively for conservation of the species.en_US
dc.identifier.citationFiishery Technology 2016:53(2), 105--109en_US
dc.identifier.issn0015-3001
dc.identifier.urihttp://hdl.handle.net/123456789/2479
dc.language.isoenen_US
dc.publisherSociety of Fisheries Technologists(India)en_US
dc.subjectSelectivityen_US
dc.subjectThryssa dussumierien_US
dc.subjectcodenden_US
dc.subjectsquare meshen_US
dc.titleTrawl Selectivity Estimates of Thryssa dussumieri (Valenciennes, 1848) in Square and Diamond Mesh Codendsen_US
dc.typeArticleen_US
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