Effects of powdered diets on the performance of the planktonic larvae of the sea cucumber Holothuria leucospilota

IF 2.4 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2025-08-18 DOI:10.1007/s10499-025-02200-8

Zhenhao Lin, Ximin Zheng, Lei You, Weihuan Yu, Xuanliang Wang, Jinhui Wu, Zonghe Yu

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Abstract

We investigated the effects of partial or complete replacement of conventional feed (live microalgae Chaetoceros muelleri:Saccharomyces cerevisiae = 3:1) (Group A) with powdered diets, including marine red yeast (Rhodotorula sp.) powder, Chlorella pyrenoidosa powder, and/or Dunaliella salina powder, on the survival, growth, and development of planktonic larvae of Holothuria leucospilota. Larvae in Group C (C. muelleri:C. pyrenoidosa:S. cerevisiae = 2:1:1) had the fastest growth rate, attaining a maximum body length of 862.30 ± 67.11 µm on day 4 (6 days post − fertilization), and entered the doliolaria stage by day 12. This group also had the highest survival rates, with a final survival rate of 90.48 ± 10.03%. In contrast, Groups D, E, and F (supplemented with D. salina) had slower growth and lower survival rates; Group E (Rhodotorula sp.:C. pyrenoidosa:D. salina:S. cerevisiae = 1:1:1:1) had the lowest survival rate (42.86 ± 8.57%). Doliolaria larvae were observed in Groups B (C. muelleri:Rhodotorula sp.:S. cerevisiae = 2:1:1), D (C. muelleri:D. salina:S. cerevisiae = 2:1:1), E, and F (C. muelleri:Rhodotorula sp.:C. pyrenoidosa:D. salina = 1:1:1:1) by day 10, and the proportion of doliolaria larvae was highest in Group E (50.00%). Overall, supplementing conventional feed with C. pyrenoidosa significantly enhanced larval growth and survival, and Rhodotorula sp. and D. salina advanced larval development. In terms of overall cost and rearing effectiveness, C. pyrenoidosa could be added to conventional feed to optimize growth and survival, and Rhodotorula sp. could be supplemented to facilitate metamorphosis.

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饲料粉末状对白斑海参浮游幼虫生产性能的影响

研究了用粉状饲粮（包括海洋红酵母粉、核核小球藻粉和/或盐盐Dunaliella粉）部分或完全替代常规饲料（活微藻：酿酒酵母= 3:1）（A组）对leucospilota Holothuria浮游幼虫的存活、生长和发育的影响。C组幼虫（C. muelleri）；pyrenoidosa: S。Cerevisiae = 2:1:1)的生长速度最快，第4天（受精后6天）体长最大，为862.30±67.11µm，第12天进入花序期。该组生存率最高，最终生存率为90.48±10.03%。相比之下，D、E和F组（添加盐藻D）生长较慢，存活率较低；E群（红酵母属）；pyrenoidosa: D。赛利娜:S。Cerevisiae = 1:1:1:1)存活率最低（42.86±8.57%）。B组分别为C. muelleri:Rhodotorula sp. S.；cerevisiae = 2:1:1), D (C. muelleri:D。赛利娜:S。cerevisiae = 2:1:1)， E和F (C. muelleri:Rhodotorula sp.:C.；pyrenoidosa: D。第10天时，以E组为最高，为50.00%。总体而言，在常规饲料中添加pyrenoidosa可显著提高幼虫的生长和存活率，红torula sp.和d.s alina可促进幼虫发育。从总体成本和饲养效果来看，在常规饲料中添加核核假单胞菌可优化其生长和存活，在常规饲料中添加红托菌可促进其变态。

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来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.