BIO-EXPLOITATION STATUS OF BOMBAY DUCK (Harpadon nehereus HAMILTON, 1822) ON TRAWL FISHERY IN TARAKAN WATERS
Abstract: North Kalimantan
Province, notably Tarakan City marine waters, is one of the important fishing
ground in boundary area among Sulu Sulawesi Marine Ecoregion. It produces
approximately 100 mt/annum of Bombay duck (Harpadon nehereus) with valued of
US$ 750,000. The sustainability of this fishery is a crucially concern given
the following: substantial economic contribution, significant dependence of
small-scale fishers on this species for their livelihoods. The fishing
intensities considerable and growing threats to their habitats. To evaluate the
vulnerability of individual species to over exploitation, the spawning
potential ratio (SPR) approach applied to describe the status of its existing
fisheries. This approach provides the ability to determine fishing mortality as
reference points to enhance its sustainability. The objective of this study is
to understand this fish biomass resilience to harvesting. The calculated SPR
based on the value of estimated length of first capture or Lc at 208 mm is
equivalent to the SPR of 28%. With a base line of stocks are generally thought
to risk recruitment declining when SPR <20%, recent finding indicated that
the existing fishery can be generally described as nearly fully exploited. In
recognition of this sector’s has an ecological importance and socio-economic
significance, the sustainable development of Bombay duck fisheries should be
initiated through developing local fishery committee to provide a their local
fishery management plan.
Keywords: Bio-exploitation;
Bombay duck; Harpadon nehereus; Trawl Fishery; Tarakan
Author: Duto Nugroho, Ria
Faizah, Andhika P. Prasetyo, M. Badrudin
Journal Code: jpperikanangg150022
