Release size and stocking density for grow-out of Apostichopus japonicus in the sea with raft-cultured macroalgae

Xu, Qinzeng; Zhang, Libin; Zhang, Xuelei; Zhou, Yi; Yang, Hongsheng

doi:10.1007/s10499-016-9976-1

Cited by 4 publications

(1 citation statement)

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“…However, H. scabra showed larger values of critical biomass Philippines (380 g/m 2 , Juinio‐Meñez, Evangelio, & Miralao, ) and Madagascar (692 g/m 2 , Lavitra, Rasolofonirina, & Eeckhaut, ) in sea pens growth‐out systems. Higher values of critical biomass than the ones obtained for H. arguinensis were also found on Australostichopus mollis and estimated for A. japonicus under IMTA conditions (550 and 793 g/m 2 , respectively; Qinzeng, Libin, Xuelei, Yi, & Hongsheng, ; Slater & Carton, ). However, for H. mammata , its critical biomass is larger than the above‐mentioned species.…”

Section: Discussionmentioning

confidence: 66%

Does space matter? Optimizing stocking density ofHolothuria arguinensisandHolothuria mammata

Domínguez-Godino

González‐Wangüemert

2018

Aquac Res

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Stocking density is an important factor affecting growth in aquaculture. The main objectives of this study are to evaluate the effects of different stocking densities on Holothuria arguinensis and Holothuria mammata's growth and determine the optimal density. Four different stocking densities were selected for H. arguinensis (1, 3, 5 and 7 ind/0.2 m 2 ) and three for H. mammata (6, 10 and 12 ind/0.5 m 2 ). Growth (specific growth rate (SGR) and growth rate (GR)), weight change, coefficient of variation and productivity were estimated, additionally the feeding rate on H. mammata.Growth on H. arguinensis decreased as the stocking density increased, showing the higher growth at the stocking density of 1 ind/0.2 m 2 (SGR: 1.24%/day ± 0.16 and GR: 0.94 g/day ± 0.05), with a 104.65% (±9.98) of weight change. The best H. mammata growth was registered at 10 ind/m 2 (SGR: 0.56% ± 0.04%/day and GR: 0.48 ± 0.04 g/day) and 25.48% (±1.52) of weight change. H. mammata feeding rate decreased as stocking density increased. Crowding stress could be considered the main factor affecting the sea cucumbers growth and performance on our study. The optimal stocking density for H. arguinensis and H. mammata under tank-based conditions were established as 1 ind/0.2 m 2 and 5 ind/0.5 m 2 respectively. The critic biomass for H. arguinensis (471.65 g/m 2 ) and for H. mammata (988.11 g/m 2 ) were reached during the experiment at the fourth and fifth weeks respectively. Therefore, to ensure and increase growth of these species under tank, their biomass should be maintained under those thresholds. K E Y W O R D Scritical biomass, growth, Mediterranean and NE Atlantic regions, sea cucumbers, stocking density

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Section: Discussionmentioning

confidence: 66%