Stage Maturity and Size at First Maturity of Blue-barred parrotfish Scarus ghobban (Forsskal, 1775) in Wallace Line, Indonesia J Tresnati1,2, D Yanuarita1, Irmawati1, A Tuwo2,3, A Yanti4, P Y Rahmani5
1Fisheries Department, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Makassar, Indonesia.
2Multitrophic Research Group, Universitas Hasanuddin, Makassar, Indonesia.
3Marine Science Department, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Makassar, Indonesia.
4Aquatic Resources Management Study Program, Graduate Program, Bogor Agricultural University, Bogor, Indonesia.
5Marine Science Study Program, Faculty of Marine Science and Fisheries, Universitas Hasanuddin, Makassar, Indonesia.
Abstract
Blue-barred parrotfish Scarus ghobban is a parrotfish that does not have sexual dimorphism, so the suspicion of hermaphroditism in the population of Blue-barred parrotfish Scarus ghobban is somewhat dubious. This study examines whether there are differences in sex ratio, stage maturity, and size at first maturity in the Blue-barred parrotfish Scarus ghobban population during the three years of the study, namely 2018, 2019, and 2020. The parameters observed were sex ratio, stage maturity, and size at first maturity. The results indicated variations in the distribution of sex ratio, maturity stage, and size at first maturity in Wallace Line, Makassar Strait, Indonesia. At first maturity, this variation in the size confirms previous research results suggesting that the Blue-barred parrotfish Scarus ghobban is a hermaphrodite
Keywords: Population, hermaphrodite, sexual dimorphism, Wallace Line, Makassar Strait
