Distribution and Seasonal Availability of Freshwater Prawn Macrobrachium Spp. in Kodayar River in Tamil Nadu, India
Journal Title: Universal Journal of Environmental Research and Technology - Year 2012, Vol 2, Issue 4
Abstract
Freshwater prawn culture has attracted more attention in the recent years due to its export potential and increasing demand as luxury protein. India is the second largest contributor of freshwater prawns to the world market. Freshwater prawn culture has undergone a phenomenal growth in the past two decades. Many species are of regional or local fishery important however only half a dozen species of genus Macrobrachium spp. are of major economic value in India. The river basins of Tamil Nadu contains some species of freshwater prawn. The prawn fishery of the river Kodayar in Tamil Nadu, India indicates that there are some major commercial species which support local fisheries. Kodayar river basin lies at the southern most tip of Indian peninsula. This is a small basin having an area of 1533 Sq. Km. with hilly area of 607 Sq. Km. which is more than one third of basin area. Kodayar river has two major tributaries in the upper reaches of its starting point. There are four stations fixed in Kodayar river basin for prawn collection. Temperature and rainfall play an important role in the breeding season of freshwater prawns. The basin rainfall highly recorded is 512.2mm during the north-east monsoon in October 2008. The average minimum and maximum temperature is found to be 23.36°C and 33.50°C respectively. The availability of prawns dependant in only monsoon periods and post monsoon periods. Totally 9 Macrobrachium species were collected in this river basin. The present paper deals with the distribution and the seasonal availability of the freshwater prawns for establishing culture farms in Kodayar river basin.
Authors and Affiliations
S. Arumugam
Keywords
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