Amarasinghe, U.S. <br/><br/>
Empirioal determination of a desirable mesh size for the gillnet fishery of Oreochromis mossambicus (peters) in a man-made lake in Sri Lanka  

 -  1987, 
 - 22p. 
 - Asian Fisheries Science .
<br/><br/> An experimental fishing with bottom-set gillnets <br/>of different mesh sizes was carried out in Parakrama <br/>Samudra, a man-made reservoir in Sri Lanka, from <br/>May to September 1983. The optimum retention length <br/>of Oreochromis mossambicus, the dominant fish species <br/>in the reservoir fishery, was estimated for each <br/>mesh size using the Holt method. The optimal length <br/>of 0. mossambicus is a function of mesh size and is <br/>described by the equation; Y = 3.4763 + 0.2024X <br/>\ tUn) £r = o#9920; p ^0.01) where Y = optimal length<br/>(total) in cm and X = stretched mesh size in mm.<br/>Using this relationship and other information on <br/>the desirable landing size of 0. mossambicus for <br/>optimal utilization, the minimum permissible mesh <br/>size for the gillnet fishery is estimated to be <br/>102 mm. The importance of revising the existing <br/>mesh size regulations to optimize the fish production <br/>in the gillnet fishery of the reservoir is discussed. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fishing Gear<br/>Inland Fisheries<br/>Fishing Nets