Aspects of the biology, growth, mortality, and exploitation of yellow goatfish (Upenes sulphureus) caught by trawl in Lingayen Gulf [Pangasinan, Philippines]
1994
Galicia, A.M. Jr. (Philippines Univ. in the Visayas, Leganes, Iloilo (Philippines). Coll. of Fisheries)
Data show that the yellow goatfish spawns during the months of March, April and Dec/Jan. These were verified by the recruitment analysis projected from the length-frequency data. The species are most abundant in the catch during the months of June and Sep. The mean size at first maturity for yellow goatfish was estimated to be 12.74 cm for females and 11.83 cm for males. Length-weight analysis shows that the female are more plump and robust than the male of the same length. Analysis of the recruitment pattern computed from length-frequency data revealed two pulses per year for the species. Growth increments of about 4 cm between 1 to 2 years of age, and 1.42 cm between 2 to 3 years of age were calculated for the species with a growth coefficient K+0.9736/year and Log-16.09 cm. This implies that it takes approximately 2-8 years for the species to grow to a length of 2 years of age, with a size range of 8 to 14 cm. The length at first capture was estimated to be 9.63 cm and the species became fully exploited at length 10.6 cm (both sexes). The stomach content analysis revealed that shrimp is the major food item in their diet
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