SIZE STRUCTURE AND LENGTH-WEIGHT RELATIONSHIP OF EMPEROR FISH (LETHRINIDAE)
Ernik Yuliana, Adi Winata, Ludivica Setijorini, Wibowo Djatmiko
Pages: 63-74
Received: 1 Jul 2024
Published: 18 Nov 2024
DOI: 10.62991/ES1996529007
Views: 1,805
Downloads: 125
Abstract: The emperor fish is a reef fish that constitutes the main catch of traditional fishermen in Wakatobi National Park (WNP). This study aimed to analyze the size structure and exploitation rate of emperor fish. The research was conducted on Kaledupa Island, WNP. The study used a survey method, identifying fishermen's catches and measuring the length and weight of the emperor fish found at the study locations. Data analysis used description analysis for measuring fish diversity; length-weight relationship (LWR) of fish; and measurement of the fish growth indicators. The results indicated that fish diversity in the two study locations (Balasuna and Tampara) was nearly identical. The species of emperor fish found were Lethrinus harak, L. ornatus, L. variegatus, L. lentjan, L. erythropterus, and L. genivittatus. Of the five types of fish found there, was L. harak (505 ind), 210 L. variegatus and 172 L. ornatus. L. harak was the longest in size at 29.5 cm, L. variegatus at 29 cm, and L. ornatus at 19 cm. Analysis of the LWR conducted on the L. harak, L. ornatus, and L. variegatus species indicated that the growth pattern of the three fish is negative allometric (a < b), meaning that their growth in length exceeded their growth in weight. The growth indicators (K, L∞, t0) of emperor fish in WNP when compared with previous research are not significantly different. In order to maintain the sustainability of fish resources, there is a need to increase fishermen's education and improve supervision of fishing activities.
Keywords: wakatobi, emperor fish, reef fish, exploitation
Cite this article: Ernik Yuliana, Adi Winata, Ludivica Setijorini, Wibowo Djatmiko. SIZE STRUCTURE AND LENGTH-WEIGHT RELATIONSHIP OF EMPEROR FISH (LETHRINIDAE). Journal of International Scientific Publications: Ecology & Safety 18, 63-74 (2024). https://doi.org/10.62991/ES1996529007
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