Population Structure and Life Table of Dog Conch (Strombus turturella) in Bangka Belitung Islands, Indonesia [Struktur Populasi dan Tabel Hidup Siput Gonggong (Strombus turturella) di Kepulauan Bangka Belitung, Indonesia]
Open Access
- 25 October 2019
- journal article
- Published by Universitas Airlangga in Jurnal Ilmiah Perikanan dan Kelautan
- Vol. 11 (2), 72-81
- https://doi.org/10.20473/jipk.v11i2.13112
Abstract
Dog Conch (Strombus turturella) has an essential economic value in Bangka Belitung Islands. Allegedly, the population of Dog Conch is decreasing due to overexploitation. The purpose of this study is to provide information related to the distribution of long frequency, growth pattern, age group, recruitment time estimation and life table of Dog Conch. This research took place on the coast of Tukak Village and Anak Air Island, Bangka Belitung Islands. Samples of Dog Conch were taken using 3x3 m2 square. The shell length of Dog Conch found ranged between 18.18 to 77.49 mm, consisting of three age groups. Asymptotic length value (L∞), growth coefficient (K) and theoretical age on zero-length (t0) were 83.94 mm, 0.79/year and -0.152 sequentially. In the first year, Dog Conch grows to 50.18 mm and slows down when it grows older until it is 13 years old. The proportion of high mortality rate was at 1 to 2 years old and 3 to 4 years old or in adult individuals, while the highest life expectancy rate was in the age group of 0-1-year old or young individuals. It indicated that the high mortality rate was in the group in which people use to consume or sell in the markets Abstrak Siput gonggong (Strombus turturella) memiliki nilai ekonomis penting di Kepulauan Bangka Belitung. Diduga populasi siput gonggong semakin menurun akibat dari eksploitasi berlebihan. Tujuan penelitian ini adalah untuk memberikan informasi terkait distribusi frekuensi panjang, pola pertumbuhan, kelompok umur, estimasi waktu rekruitmen dan tabel hidup siput gonggong. Lokasi penelitian berada di Pesisir Desa Tukak dan Pulau Anak Air, Kepulauan Bangka Belitung.Pengambilan sampel siput gonggong dilakukan dengan menggunakan kuadrat 3x3 m2. Panjang cangkang siput gonggong yang ditemukan berkisar antara 18.18 s.d 77.49 mm yang terdiri atas 3 kelompok umur. Nilai panjang asymptotic (L∞), koefisien pertumbuhan (K) dan umur teoritis ketika panjang sama dengan nol (t0) adalah 83.94 mm, 0.79/tahun dan -0.152 secara berurutan. Pada tahun pertama siput gonggong mengalami pertumbuhan, mencapai 50.18 mm dan melambat ketika umur semakin tua hingga umur 13 tahun. Proporsi laju kematian tinggi terdapat pada umur 1 s.d 2 tahun dan 3 s.d 4 tahun atau pada individu dewasa, sedangkan nilai harapan hidup tertinggi terdapat pada kelompok umur 0-1 tahun atau individu muda. Hal ini menunjukkan bahwa kematian tertinggi terdapat pada kelompok umur yang telah diambil oleh masyarakat untuk dikonsumsi dan dijual ke pasaran.Keywords
This publication has 14 references indexed in Scilit:
- SPAWNING AND DEVELOPMENT OF DOG CONCH Strombus sp. LARVAE IN THE LABORATORYJurnal Ilmu dan Teknologi Kelautan Tropis, 2018
- Behavior And Feeding Habit of Dog Conch (Strombus turturella) in South Bangka Regency, Bangka Belitung Islands ProvinceEl-Hayah, 2016
- Impact of minimum catch size on the population viability of Strombus gigas (Mesogastropoda: Strombidae) in Quintana Roo, Mexico.Revista de Biologia Tropical, 2014
- Maturation and age in queen conch (Strombus gigas): Urgent need for changes in harvest criteriaFisheries Research, 2012
- SPAWNING AND LARVAL DEVELOPMENT DOG CONCH (Strombus turturella)Jurnal Ilmu dan Teknologi Kelautan Tropis, 2012
- Evidence for size increase in an exploited mollusc: humped conch (Strombus gibberulus) at Chelechol ra Orrak, Palau from ca. 3000–0 BPJournal of Archaeological Science, 2010
- Age, Growth, Mortality and Population Structure of Strombus canarium (Gastropoda: Strombidae): Variations in Male and Female Sub-PopulationsJournal of Applied Sciences, 2009
- Sexual Maturity and Sex Determination in Strombus canarium Linnaeus, 1758 (Gastropoda: Strombidae)Journal of Biological Sciences, 2008
- Biological Evaluation of Marine Protected Area: Evidence of Crowding Effect on a Protected Population of Queen Conch in the CaribbeanMarine Ecology, 2003
- Significance of Habitat and Stock Re‐Testing for Enhancement of Natural Fisheries: Experimental Analyses with Queen Conch Strombus gigasJournal of the World Aquaculture Society, 1994