DINAMIKA POPULASI IKAN MAS (Cyprinus carpio) DI WADUK BILIBILI

Abstract

Total length frequency sample of Cyprinus carpio was collected in July through

December 2000. The COMPLEAT ELEFAN and Virtual Population Analysis (VPA)

were used for estimating its cohort, population parameters and stock. The von

Bertalanffy growth formula was estimated as L' = 59.0 cm and K = 0.7 year-1. Total

mortality rate was estimated using mean length analysis of Z = 3.64 year–1. Naturalmortality was estimated by Pauly’s empirical formula accounted to

M = 1.171 year-1.Fishing mortality, which is indicated by F, was 3.517 year–1 while Exploitation rate

was reached at 0.75. A Beverton-Holt yield-per-recruit model explored that current

fishery harvest, approximately 115.38% reached at from the potential yield with Lc, of

8.18 cm. Biomass estimating has been reached at 546.8 tons, then the current

productivity will be 33 kgHa-1year-1.