00000ctm a22000004a 4500 UP-8027390931312570087 Buklod 20240315091856.0 o--- | || || ta 240315s2021 xx d r |||| u| (iLib)UPCEB-00012909758 UPC eng LG 993 2022 B4 R47 Resullar, Karizza Bea P. author. Length-weight relationship of two commercially important marine fishes in Central Visayas, Philippines Karizza Be a P. Resullar; Thesis adviser, Hazel O. Arceo. 2021. Cebu City, Cebu Department of Biology and Environmental Science, College of Science, University of the Philippines Cebu c2021. v, 28leaves illustrations (some col.) Thesis (Bachelor of Science in Biology). University of the Philippines Cebu. July 2021 NOT available to the general public. Available only after consultation with author/ research adviser. Available only to those bound by confidentiality agreement. Most of the coastal communities in developing nations highly depend on pelagic fishes for livelihoods and food security. The decline in their population can have economic and ecological effects, such that understanding their growth parameters is important. These parameters are of great help in providing information about the general well-being of fishes and their fitness. Many studies about length-weight relationships (LWRs) of fishes have already been conducted in several countries. However, only a few have been done in the Philippines. Selar crumenophthalmus (big eye scads) and Decapterus kurroides (red tail scads), both belonging to the Family Carangidae, are among the most common pelagic species found in commercial fish landings in Cebu, Philippines. This study aimed to: a) evaluate the length-weight relationship of these two commercially important marine species; b) determine the condition factor of each species; and, c) identify possible factors that influenced their growth parameters. The length-weight relationship was carried out for 86 fish samples of the two species (56 for S. crumenophthalmus and 30 for D. kurroides). The total length and weight for S. crumenophthalmus ranged from 16.6 to 25.4 cm (with a mean of 19 cm) and 53 to 250 g (with a mean of 96.5 g), respectively. Meanwhile, the total length measured for D. kurroides ranged from 18.1 to 24.1 cm (with a mean of 20.97 cm), and its total weight ranged from 64.6 to 153.7 g (with a mean of 94.24 g). S. crumenophthalmus showed positive allometric growth (b=3.40) while Decapterus kurroides indicated an isometric growth pattern (b=3.03). Linear regression analysis showed high positive correlation between length and weight for the two species, with r2 ranging from 0.8564 to 0.9688 (p<0.05). The condition factors for S. crumenophthalmus and D. kurroides were 1.350 and 1.004, respectively, which implies that both species are in good condition. The results of this study provide information that can be applied to enhance fisheries management and conservation of these two commercial fish species. Arceo, Hazel O. Thesis adviser. UP UPCEB CEBU-LAHUG LG 993 2022 B4 R47 Thesis