Trial grow-out culture of sea cucumberHolothuria scabrain sea cages and pens

Abstract

Field trials were conducted to determine the effects of size, grow-out period and site on the growth and survival of Holothuria scabra. Juveniles were reared in sea cages in two sites for 2 months during two different times of the year. Juveniles from Experiment 1 were subsequently grown in sea pens for 8 months in one site. The significantly lower survival particularly of the small-sized group (<0.1 g) in Pilar is likely due to reduced water and sediment quality because of proximity to fish-farming activities. The importance of grow-out period was evident in the significant differences in weight increments in all size groups and biomass in the small-sized group (P < 0.10) in Lucero during Experiment 2 when water temperature range and incidence of rainfall were higher. The decrease in the average weight of adults during the second half of the grow-out period may be due to the interplay of the reduction in salinity, onset of sexual maturity and biomass exceeding carrying capacity in the pens. The estimated biomass threshold in the sea cages and pens in Lucero were 300 g m À2 and 380 g m À2 respectively. Implications of the results on the viability of smallscale pen grow-out culture are discussed.

First assessment of the potential for coculture of sandfish (Holothuria scabra) with Babylon snail (Babylonia areolata) in Vietnam

“…Sandfish, Holothuria scabra , is the most valuable tropical sea cucumber species that may fetch US$115–640 per kg dry weight (DW) after appropriate processing and up to US$1670 per kg DW for individuals greater than 1.5 kg in weight (Purcell, Hair, et al, ). Given this high value, sandfish has attracted considerable research attention with regard to development of hatchery (Duy, ; Duy, Francis, & Southgate, ; Hair, Kaure, Southgate, & Pickering, ; Militz, Leini, Duy, & Southgate, ), nursery (Gorospe, Altamirano, & Juinio‐Meñez, ; Juinio‐Meñez, Peralta, Dumalan, Edullantes, & Catbagan, ; Sinsona & Juinio‐Meñez, ), and grow‐out production methods (Hair, ; Hair, Mills, McIntyre, & Southgate, ; Hair, Ram, & Southgate, ; Juinio‐Meñez, Evangelio, & Miralao, ).…”

Water Quality Assessment and Monitoring of Closed Rearing System of the Sea Cucumber Holothuria scabra

“…The optimal stocking densities for A. japonicus in a suspended cage has been determined to be 22.3 ind.m -2 for feed-supplemented pens and 14.1 ind.m -2 for non-feedsupplemented pens (Qin et al 2009). Another sea farming method is sea pen or cage culture, which has been used in H. scabra grow-out (Juinio-Meñez et al 2014;Dumalan et al 2019). Ceccarelli et al (2018) reported that the survival and growth rate of H. scabra was significantly higher at shallow depths with intermediate seagrass cover and high organic carbon content of sediments.…”

PERTUMBUHAN TERIPANG PASIR Holothuria scabra YANG DIPELIHARA DALAM BAK DAN KARAMBA JARING APUNG DI TAMBAK DENGAN APLIKASI BEBERAPA FORMULASI PAKAN BUATAN

“…Juinio-Menez et al (2012) Tabel 3. Performa pertumbuhan dan sintasan teripang pasir yang diberi pakan percobaan selama empat bulan dalam kantong jaring di tambak 1) .... (Nyoman Adiasmara Giri) melaporkan bobot teripang pasir yang dipelihara dalam karamba jaring apung di laut selama dua bulan hanya mencapai rata-rata 6,0 g dari bobot awal 1-4 g. Teripang pasir yang dipelihara dalam karamba tancap di laut selama lima bulan bobotnya dapat mencapai 164 g dari bobot awal 8-10 g. Namun demikian pertumbuhan teripang yang dipelihara pada karamba jaring tancap ini sangat bervariasi karena pada beberapa unit percobaan juga diperoleh pertumbuhan bobot yang negatif (Juinio-Menez et al, 2012). Pada percobaan budidaya teripang pasir di tambak dengan kepadatan 3 ekor/m 2 dengan ukuran awal 3,8 g dan 23,8 g masing-masing dapat mencapai ukuran 28,0 g dan 60,6 g selama lima minggu pemeliharaan (Lavitra et al, 2009).…”