Carapace length-frequency distribution and carapace length-weight correlation of ornate spiny lobster (Panulirus ornatus) in Sebatik Island Waters – Indonesia

Abstract

Ornate spiny lobster (Panulirus ornatus) in Sebatik Island is a commercial fisheries commodity that has the highest price if we compare it with another lobster caught by the fisherman in Sebatik Island Waters. That causes the effort to catch this lobster to increase continuously. The availability of biological aspects data of ornate spiny lobster is needed as a basis for sustainable lobster resource management in Sebatik Island. This research aims to analyze the biological performance of ornate spiny lobster in Sebatik Waters, coverage from study carapace length-frequency distribution and carapace length-weight correlation of ornate spiny lobster. This research is expected to provide benefits as basic information in lobster management. Information related to the biological condition of lobsters can be used as a consideration in strategies for the utilization and management of lobster resources. Measurement of carapace length, weight, and sex of ornate spiny lobster was carried out from April to August 2016 at lobster landing base in Sebatik Island, North Borneo, Indonesia. The results showed that the sex ratio shows an unstable ratio. The distribution catch size of ornate spiny lobsters ranged from 64.5–114.5 mmCL. The growth pattern of female and male ornate spiny lobsters was negative allometric with r and R2 values of both female and male >0.95. Carapace length at first ornate spiny lobster catch was 71.28 mmCL.

Growth Patterns and Mortality of Lobster Panulirus ornatus from the Catch of Bottom Gill Net Fishers in the Western Waters of Tarakan Island

“…Using the Von Bertalanffy model shown in Figure 8, the age at the first length catch (Lc) was 48 and 61 days. According to Muzammil and Kurniadi (2020) (Liu et al 2014). However, the male and female fish caught were 24.7-25.5 cm and 23.6-25.4 cm in length.…”

“…Priyambodo et al (2020) reported that the lowest and highest catch seasons were from December to March and April to November, respectively. Research by Foo (2020) and Muzammil and Kurniadi (2020) reported an imbalance sex ratio between males and females. According to Mendes et al (2016), the asymptotic growth of the lobster carapace was inversely correlated with the growth rate.…”

Pengenalan Biota Laut Dilindungi melalui e-Book “Dugong & Friends” dalam Meningkatkan Kesadaran Masyarakat terhadap Kelestarian Sumber Daya Perikanan

“…Namun dengan adanya peningkatan akan kebutuhan manusia dan tekanan lingkungan yang menjadi habitat sumber daya hayati laut, mengakibatkan terjadinya banyak penurunan populasi dari biota perairan. Hal ini menyebabkan beberapa biota perairan seperti hiu (Balai Pengelolaan Sumberdaya Pesisir dan Lautan Direktorat Pengelolaan Ruang Laut [BPSPL], 2019; Suwelo, 2005), napoleon (Firdaus & Hafsaridewi, 2012;De Mitcheson et al, 2019), lobster mutiara (Muzammil & Kurniadi, 2021), dugong (BPSPL, 2015), dan penyu (Ario et al, 2016) menjadi langka dan terancam punah. Berdasarkan permasalahan tersebut, maka perlu dilakukan upaya konservasi meliputi aspek pelestarian, perlindungan, dan pemanfaatan.…”