000			nam a22 7a 4500
999			_c9482 _d9482
003			OSt
005			20181227092513.0
008			181214b xxu||||| |||| 00| 0 eng d
040			_cNARA
100			_917659 _aDayaratne P.
245			_aAge and Growth Estimates of Stolephorus Heterolobus (Ruppell) from Daily Growth Rings in the Otoliths
260			_c1990, _aPhilippines, _bAsian Fishery Society,
300			_a4p.
440			_917706 _aAsian Fisheries Science
520			_aAge and growth parameters of Stolepho­ rus heterolobus caught by gill net and beach seine fisheries on the west coast of Sri Lanka are described. Ageing was based on primary growth rings in the otoliths. A total of 86 otoliths were extracted from fish having a length range of 2.1 - 8.5 cm. Otoliths were prepared for age reading after a little grinding. Rings were counted from the center of the otolith towards the outer edge. Verification counts on some otoliths were made by a second reader. The otolith microstructure was also used to trace the early life history of S_;_ heterolobus. There was a linear relation between fish length and otolith size. Growth esti­ mates were made by using direct size-at-age data and back-calculated data. Growth parameters estimated by these two methods are K = 4.02, L00= 8.62 and K = 3.91, L«,= 8.74, respectively. This species is relatively fast growing, having a life span of about 9 months.
942			_cRP _2ddc