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Distribution of mesopelagic micronekton in the Arabian Sea during the winter monsoon

DRS at CSIR-National Institute of Oceanography

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Title Distribution of mesopelagic micronekton in the Arabian Sea during the winter monsoon
 
Creator Karuppasamy, P.K.
Muraleedharan, K.R.
DineshKumar, P.K.
Nair, M.
 
Subject micronekton
oxygen minimum zones
mesopelagic community
 
Description Response of micronekton to oxygen minimum zones in the Arabian Sea (AS) during winter monsoon period was investigated using data of 52 trawls deployed during four winter cruises between 1998 and 2000. Twenty-nine species, representing 19 groups were identified in the deep scattering layer (DSL). The mesopelagic community was dominated by shrimps, myctophids, fish larvae, phosichthyids and leptocephalus. Based on the distribution, two regions were distinguished: the southern Arabian Sea (sAS) and the northern Arabian Sea (nAS). Ceratoscopelus warmingii, Diogenichthys panurgus, Diaphus fragilis, Lampanyctus turneri, Thallasocaris carinata, Leptochela robusta, Oplophorus typus, Viniciguria nimbaria, V. leucita were dominant in the sAS; Benthosema pterotum, Bolinichthys longipes, Diogenichthys panurgus, D. fragilis, D. aliciae, V. nimbaria, V. leucita were dominant in the nAS. Most of these species were abundant in the upper 50 m during night, but were found in the oxygen minimum zone (OMZ) between 175 to 800 m north of 13oN during daytime. Fourteen of 29 species were detected within the OMZ during day time
 
Date 2010-08-02T11:41:00Z
2010-08-02T11:41:00Z
2010
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, vol.39(2); 227-237
http://drs.nio.org/drs/handle/2264/3683
 
Language en
 
Publisher NISCAIR, CSIR