Reproductive biology of skipjack tuna Katsuwonus pelamis in Majene Waters, West Sulawesi Province, Indonesia
##plugins.themes.bootstrap3.article.main##
Abstract
Abstract. Nur M, Tenriware, Utami S, Nasyrah AFA, Sapri R. 2024. Reproductive biology of skipjack tuna Katsuwonus pelamis in Majene Waters, West Sulawesi Province, Indonesia. Biodiversitas 25: 2828-2835. Skipjack tuna Katsuwonus pelamis (Linnaeus, 1758) is a major global fishery resource and a target species in West Sulawesi Province. Therefore, this research aimed to examine various biological factors related to skipjack tuna, including sex ratio, Gonad Maturity Stage (GMS), Gonadosomatic Index (GSI), size at first maturity, and fecundity. The primary objective was to provide essential data that supported the sustainable management of skipjack tuna in Majene Waters located in West Sulawesi, Indonesia. Fish samples were collected by fishermen using purse seine fishing gear and hand lines, and landed at Fish Landing Sites Majene. This research was carried out from July to February 2024, with analysis performed at the Fisheries Department Laboratory, Universitas Sulawesi Barat. The analysis stages included measuring fish total body length with an accuracy of 0.1 mm and weighing the body weight using a digital scale with an accuracy of 0.01 g. A total of 340 skipjack tuna were sampled, consisting of 192 males and 148 females, indicating a nearly balanced sex ratio. The spawning season appeared to extend throughout the year, with a peak spawning period from November to February. This analysis result found five levels of gonad maturity, including GMS I (immature), GMS II (maturing), GMS III (mature), and GMS IV (ripe and running), as well as GMS V (spent). The size at first maturity for males skipjack tuna was 400.2 mm, ranging from 386.6-402.3 mm. Meanwhile, the size at first maturity for females varied between 396.6 and 462.3 mm, averaging 420.2 mm. The reproductive potential of skipjack tuna was relatively high, with an average fecundity ranging from 203,377-739,820 eggs.
##plugins.themes.bootstrap3.article.details##
Most read articles by the same author(s)
- AHMAD MUHTADI, MUHAMMAD NUR, HUSAIN LATUCONSINA, THOMAS HIDAYAT, Population dynamics and feeding habit of Oreochromis niloticus and O. mossambicus in Siombak Tropical Coastal Lake, North Sumatra, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 1 (2022)
- SRI UTAMI, HERMANU TRIWIDODO, PUDJIANTO PUDJIANTO, AUNU RAUF, NOOR FARIKHAH HANEDA, Population dynamics of Arthroschista hilaralis pest and its parasitoid diversity in various jabon (Anthocephalus cadamba) cropping patterns in South Sumatra, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 19 No. 1 (2018)
- TIKAWATI, SHARIFUDDIN BIN ANDY OMAR, MUHAMMAD NUR, Length-weight relationship and condition factor of threadfin goby Sicyopterus longifilis de Beauford, 1912 (Teleostei: Sicydiinae) at Ummiding and Matama Rivers, West Sulawesi, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 25 No. 5 (2024)
- MUHAMMAD NUR, TENRIWARE, ADIARA FIRDHITA ALAM NASYRAH, Length-weight relationship and condition factor of bullet tuna (Auxis rochei Risso, 1810) in the waters of Mamuju District, West Sulawesi Province, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 24 No. 10 (2023)
- TENRIWARE, MUHAMMAD NUR, ADIARA FIRDHITA ALAM NASYRAH, Biological reproduction of mackerel scad, Decapterus macarellus (Cuvier, 1833) caught by purse-seine net in Majene Waters, West Sulawesi, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 24 No. 5 (2023)