Dewi Shinta Achmad, Muh. Saleh Nurdin, Fauziah Azmi, Merita Ayu Indrianti, Evi Hulukati, Jamaluddin Jompa, Teuku Fadlon Haser, Novianita Achmad
Grouper fishery has been the source of income for 3,700 fishermen in Kwandang Bay. Since 2017, grouper populations in Kwandang have been depleting due to the absence of management. This research aimed to analyze species composition, length-weight relationship, and condition factor of the groupers. Samples were collected from fishers who caught the fish using traps, speargun, and handline. Samples were identified through a method by Heemstra and Randall, while the length-weight relationship was estimated using log-linear regression and t-test. The number of specimens identified during January-December 2021 was 1,571 individuals. Research showed that those samples consisted of 26 species under eight genera. Six species found in Kwandang Bay were showing trends of decreasing populations and two species were vulnerable based on the IUCN conservation list. Length-weight relationship analysis of 14 grouper species resulted in b value ranging from 1.6359 to 3.4417 and R2 ranges from 0.7718 to 0.9858. A significant test at a 95% confident interval showed that 14 species had an isometric growth pattern. Fulton condition factors show that Kwandang Bay is an essential habitat for groupers, and the bay can support the fish growth due to the adequate food availability. © 2023, Faculty of Fisheries and Marine Universitas Airlangga. All rights reserved.
Department of Aquaculture, Faculty of Science and Technology, Muhammadiyah University of Gorontalo, Gorontalo, 96181, Indonesia; Department of Fisheries and Marine, Faculty of Animal Husbandry and Fisheries, Tadulako University, Central Sulawesi, Palu, 94148, Indonesia; Department of Aquaculture, Faculty of Agriculture, Samudra University, Aceh, Kota Langsa, 24416, Indonesia; Department of Agribusiness, Faculty of Science and Technology, Muhammadiyah University of Gorontalo, Gorontalo, 96181, Indonesia; Department of Mathematics, Faculty of Mathematics and Natural Science, Gorontalo State University, Gorontalo, 96128, Indonesia; Marine Science Department, Faculty of Marine Science and Fisheries, Hasanuddin University, South Sulawesi, Makassar, 90245, Indonesia
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