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Lunar, diel and tidal variabilityin penaeid prawn larval abundance in the Mandovi estuary, Goa

DRS at CSIR-National Institute of Oceanography

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Title Lunar, diel and tidal variabilityin penaeid prawn larval abundance in the Mandovi estuary, Goa
 
Creator Goswami, S.C.
Goswami, U.
 
Description Prawn larvae were studied to determine suitable lunar and tidal phases and time for large scale seed collection for prawn aquaculture. Larvae and postlarvae of 8 commercially important species were observed in the surface and bottom zooplankton samples. These were in order of abundance, Metapenaeus dobsoni (Miers), M. affinis (H. Milne-Edwards), M. monoceros (Fabricius), Parapenaeopsis stylifera (H. Milne-Edwards), Penaeus merguiensis De Man, P. indicus H. Milne-Edwards, P. monodon Fabricius and P. semisulcatus De Haan. The mysis stages were dominant. Water temperature and salinity variations were meagre and do not seem to influence larval abundance. However, lunar phases, diel cycles and tidal oscillations influenced their occurrence. The preponderance of protozoea and mysis stages was noticed in samples taken during day time while postlarvae were common at night. Total ingression of penaeid prawn larvae was more during full moon and high tide compared to new moon and low tide periods
 
Date 2009-05-08T08:49:10Z
2009-05-08T08:49:10Z
1992
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol.21; 21-25p.
http://drs.nio.org/drs/handle/2264/2929
 
Language en
 
Rights Copyright [1992]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher NISCAIR, New Delhi