The Nursery Technique of Juvenile Sandfish, Holothuri scabra

Abstract

Sea cucumbers are an Indonesian fisheries export commodity. Sea cucumber populations that are endangered in nature encourage sea cucumbers to be produced through hatchery and nursery. Through nursery, it is expected that sea cucumber juveniles are stronger and can increase survival rate when stocked in growth containers or restocked. This study aims to provide better sandfish nursery techniques and local area characteristics to support hatchery activities. This study was conducted in May - July 2018 at the Hatchery CV Pesona Manir Rat, Southeast Maluku Regency. Juvenile sandfish 30-36 days old, rearing in hapa measuring 100 x 100 x 70 cm with a density of 200 individuals/hapa. In one tank rearing is placed one hapa. During rearing, 100-150% of water is changed and given one-liter Navicular sp. every day. Aeration was installed 4 points on each hapa and water quality measurement was conducted every day. At the end of the study, body length measurements and mortality calculations were conducted. The result is that sea cucumber juvenile which is maintained has absolute growth ranging from 1.98 to 2.1 cm with an average absolute growth of 2.03 cm. The average mortality obtained was 53.83% with a range of 53% - 55%. Based on the discussion it was concluded that this technique can be applied in sandfish nursery. ABSTRAKTeripang merupakan komuditi eksport perikanan Indonesia. Populasi teripang yang terancam di alam mendorong teripang harus diproduksi melalui pembenihan dan pendederan. Melalui pendederan diharapakan anakan teripang lebih kuat dan dapat bertahan hidup lebih baik ketika ditebar pada wadah pembesaran atau direstoking. Penelitian ini bertujuan memberikan informasi teknik pendederan teripang pasir yang lebih baik dan berkarakteristik daerah setempat guna menopang kegiatan pembenihan. Penelitian ini dilaksanakan pada bulan Mei – Juli 2018 di Hatchery CV Pesona Manir Rat, Kabupaten Maluku Tenggara. Juvenil teripang pasir berusia 30 – 36 hari, dipelihara pada hapa berukuran 100 x 100 x 70 cm dengan kepadatan 200 individu / hapa. Pada satu bak pemeliharaan ditempatkan satu buah hapa. Selama pemeliharaan dilakukan pergantian air sebanyak 100 – 150 % dan diberikan satu liter Navicular sp. setiap hari. Aerasi dipasang sebanyak 4 titik pada setiap hapa dan dilakukan pengukuran kualitas air setiap hari. Diakhir penelitian, dilakukan pengukuran panjang tubuh dan perhitungan mortalitas. Hasilnya juvenile teripang yang dipelihara mengalami pertumbuhan mutlak berkisar antara 1,98 – 2,1 cm dengan rata-rata pertumbuhan mutlak sebesar 2,03 cm. Mortalitas rata-rata yang diperoleh sebesar 53, 83 % dengan kisaran 53 % - 55 %. Berdasarkan pembahasan disimpulkan bahwa teknik ini dapat diterapkan dalam pendederan teripang pasir.

Application of Sargassum sp extract on juvenile sandfish nursery

“…Absolute growth in body length of juveniles reared in a controlled tank for 30 days of 20.1 mm [3]. Referring to the results shown [3,5], the absolute growth of the body length of the three treatments (8.76 -14.59 mm) was still quite good. Good growth because of the available food and stocking density which was still in the optimal range (400 individuals/m 2 ).…”

“…A report mentioned that the body length of juvenile sandfish measuring 2-15 mm that were fed Sargassum sp extract and reared for 60 days was 20-34 mm [5]. Absolute growth in body length of juveniles reared in a controlled tank for 30 days of 20.1 mm [3]. Referring to the results shown [3,5], the absolute growth of the body length of the three treatments (8.76 -14.59 mm) was still quite good.…”

“…Feed is one of the factors that play an important role in the nursery of fish because feed affects the growth and survival of juvenile sandfish, Holothuria scabra. Nursery is the process of preparing seeds to a size that is safe for cultivation in rearing media or restocked into nature [3]. At nursery time, juvenile sandfish consume feed in the form of microalgae detritus such as Navicula sp.…”

Implementasi Sea Ranching Teripang Berbasis Kearifan Lokal Sistim Sasi Di Desa Warbal, Maluku Tenggara

“…1.200.000 / kg kering dan di pasar internasional mencapai US$450/kg. Harga tersebut bervariasi mengikuti ukuran dan kualitas pengolahan teripang (Tomatala et al, 2020). Saat ini, International Union for Conservation of Nature (IUCN) dan Conference of the Parties ke 18 Convention on International Trade in Endangered Species (COP 18 CITES) telah menetapkan teripang sebagai satwa yang terancam dan harus diatur perlindungan, pelestarian dan pemanfaatannya (Wirawati et al, 2021).…”