Asian Fisheries Society

Abundance and distribution pattern of two common Loliginid squids, Uroteuthis (Photololigo) chinensis (Gray 1849) and Uroteuthis (Photololigo) duvaucelii (d’Orbigny 1835), in the Gulf of Thailand

Abstract:

This study was carried out to assess the distribution pattern of two loliginid squid species; Uroteuthis (Photololigo) chinensis (Gray 1849) and Uroteuthis (Photololigo) duvaucelii (d’Orbigny 1835) at different depth contours along the lower part of the Gulf of Thailand sampled by bottom trawl during April to July 2015. Hydrological parameters including temperature, salinity, pH, dissolved oxygen, conductivity and transparency were simultaneously measured. The average abundance, weight and density for U. (P.) chinensis were 32.7±37.9 individuals.hr-1, 2.1±1.7 kg.hr-1 and 1,268.8±1,370.3 individuals.nm-2 and for U. (P.) duvaucelii were 13.6±17.3 individuals.hr-1, 0.3±0.3 kg.hr-1 and 554.5±755.0 individuals.nm-2, respectively. It was found that depth affected both weight and density of both species combined (ANOVA, p < 0.05) and U. (P.) chinensis (ANOVA, p < 0.05) but not for U. (P.) duvaucelii. This study addresses the lack of scientific information on the species, serves to provide fundamental scientific data for their proper management and provides a reliable reference for the advancement of science.

Publication Date : 2017-12-31

Volume : 30

Issue : 4

Page : 262-273

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Date 2017/12/31
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