Laju eksploitasi dan variasi temporal keragaan reproduksi ikan banban Engraulis grayi (Bleeker, 1851) betina di Pantai Utara Jawa (oktober-maret)

Abstract

Research that conducted at Gebang Mekar Fish Landing Base (PPI) Cirebon, West Java, aimed to determine the level of exploitation and assess aspects of banban reproductive biology (Engraulis grayi) in Cirebon. Implementation was accomplished in December 2008 to March 2009 and resumed in October 2009 until December 2009. 654 individuals of female banban have been caught. This species has its first gonad maturity on the length of 171 mm and exploitation rate by 57%, or already over exploited. The increase of the length and weight of the body causing higher level of gonad maturity, gonad maturity index value and fecundity increases. Diameters of eggs that already spawned ranged from 0.495 to 0.575 mm. The distribution of eggs diameter indicates banban is fish with high fecundity with spawning type called "partial spawner".