000			nam a22 7a 4500
999			_c9373 _d9373
003			OSt
005			20181226101834.0
008			181214b xxu||||| |||| 00| 0 eng d
040			_cNARA
100			_917452 _aAmarasinghe, U.S.
245			_aEmpirioal determination of a desirable mesh size for the gillnet fishery of Oreochromis mossambicus (peters) in a man-made lake in Sri Lanka
260			_c1987,
300			_a22p.
440			_917459 _aAsian Fisheries Science
520			_aAn experimental fishing with bottom-set gillnets of different mesh sizes was carried out in Parakrama Samudra, a man-made reservoir in Sri Lanka, from May to September 1983. The optimum retention length of Oreochromis mossambicus, the dominant fish species in the reservoir fishery, was estimated for each mesh size using the Holt method. The optimal length of 0. mossambicus is a function of mesh size and is described by the equation; Y = 3.4763 + 0.2024X \ tUn) £r = o#9920; p ^0.01) where Y = optimal length (total) in cm and X = stretched mesh size in mm. Using this relationship and other information on the desirable landing size of 0. mossambicus for optimal utilization, the minimum permissible mesh size for the gillnet fishery is estimated to be 102 mm. The importance of revising the existing mesh size regulations to optimize the fish production in the gillnet fishery of the reservoir is discussed.
650		0	_917460 _aFishing Gear
650		0	_917462 _aInland Fisheries
650		0	_917461 _aFishing Nets
942			_cRP _2ddc