International Journal of Fauna and Biological Studies
2014, Vol. 1 Issue 6, Part A
Population dynamics of the mangrove clam Polymesoda erosa (Bivalvia: Corbiculidae) in Iwahig, Palawan, Philippines
Roger G. Dolorosa and Floredel Dangan-Galon
The mangrove clam Polymesoda erosa
(Solander, 1786) is a principal mollusc resource collected by artisanal fishermen in the mangrove forest of Iwahig River, Palawan, Philippines. Between April 2013 and May 2014, measurements of shell lengths of P. erosa
were undertaken to determine its population dynamics. The estimated Lâˆž and K of the von Bertalanffy Growth Formula (VBGF) were 107.1 mm and 1.0 yr-1 respectively. Total mortality (Z) was 3.74 yr-1, natural mortality (M) was 1.41 yr-1 and fishing mortality (F) was 2.33 yr-1. The exploitation rate (E = 0.62) which surpassed the maximum exploitation rate (Emax = 0.50) suggests the need to regulate harvesting. Exploring the aquaculture potentials of this species is suggested.
Pages: 11-15 | 2327 Views 815 Downloads
Roger G. Dolorosa and Floredel Dangan-Galon. Population dynamics of the mangrove clam Polymesoda erosa (Bivalvia: Corbiculidae) in Iwahig, Palawan, Philippines. Int. J. Fauna Biol. Stud. 2014;1(6):11-15.