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Fishery resources in arid zone mangroves in gulf of Kachchh, Gujarat, northwest coast of India |
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| Authors: | A Saravanakumar M Rajkumar J Sesh Serebiah G A Thivakaran |
| Institution: | 1. Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai - 608 502, Tamil Nadu, India 2. Marine Studies and Coastal Resource Management, Madras Christian College, Tambaran, Chennai- 600 059, Tamil Nadu, India 3. Gujarat Institute of Desert Ecology, Bhuj - 370 001, Gujarat, India |
| Abstract: | 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. |
| Keywords: | mangroves Gulf of Kachchh Gujarat finfish and shellfish species diversity richness evenness |
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