Journal of Ocean University of China

, Volume 8, Issue 3, pp 233-240

First online:

Fishery resources in arid zone mangroves in gulf of Kachchh, Gujarat, northwest coast of India

  • A. SaravanakumarAffiliated withCentre of Advanced Study in Marine Biology, Annamalai University
  • , M. RajkumarAffiliated withCentre of Advanced Study in Marine Biology, Annamalai University Email author 
  • , J. Sesh SerebiahAffiliated withMarine Studies and Coastal Resource Management, Madras Christian College
  • , G. A. ThivakaranAffiliated withGujarat Institute of Desert Ecology

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The finfish and shellfish resources were assessed quantitatively and qualitatively in regard to their abundance in creek waters at three sites within a period of two years, from January 1999 to December 2000, in the western mangrove areas of Kachchh. The catch rate varied from 0.69 to 6.99 kg h−1. It was low during monsoon (July to October), which could be due to the freshwater-flow-induced salinity reduction in all the sites. Among 38 species recorded, 5 were shellfish and 33 were finfish. The spawning period of fishes was found to be during summer and early monsoon period (May to August). Surface water temperatures varied from 17 °C to 37 °C. Salinity values varied from 34 to 44 and the pH ranged between 7 and 8.9. Variation in dissolved oxygen content was from 3.42 to 5.85 mL L−1. The high fishery densities in these semi arid mangrove creek areas were recorded during monsoon and early winter season.

Key words

mangroves Gulf of Kachchh Gujarat finfish and shellfish species diversity richness evenness