Acosta, Ernesto J., Rodríguez‐Forero, Adriana, Werding, Bernd and Kunzmann, Andreas ORCID: (2021) Effect of density, temperature and diet on the growth, survival and development of larvae and juveniles of Isostichopus sp.. Aquaculture Research, 52 (2). pp. 611-624. DOI

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Isostichopus sp. is a variety of Isostichopus badionotus, proposed as a new species, which has been intensely fished in the Colombian Caribbean, arousing interest for its aquaculture. This study evaluated the effect of two culture densities (1–3 larvae ml−1), two temperatures (23°C and 26°C) and two microalgae diets (Isochrysis galbana, Chaetoceros calcitrans, Nannochloropsis oculata 1:1:1 and I. galbana, C. calcitrans 1:1) on the survival, development and growth of its larvae. Larval culture lasted 22 days until metamorphosis to doliolaria larvae, and 7 days later, the first juveniles were observed with a size of 621.8 ± 12.7 µm (±SE). The highest growth rates, survival and percentage of doliolaria larvae were obtained with 1 larva ml−1 (29.2 µm/day and 31.5% doliolaria larvae) and 26°C (28.4 µm/day and 10% doliolaria larvae). However, in the two diets examined, the larvae showed low growth rates (between 1.3 and 8.5 µm/day), stagnation in development and high mortality. Our results indicate that it is feasible to culture larvae from Isostichopus sp. to juveniles, recommending the use of 1 larva ml−1 and 26°C. However, to meet the nutritional needs of the larvae the inclusion of microalgae Pavlova sp. and Tetraselmis chuii in the diet is recommended. This paper reports for the first time the successful production of sea cucumber juveniles of this species in Colombia.

Document Type: Article
Programme Area: PA1
Research affiliation: Ecology
Refereed: Yes
Open Access Journal?: No
ISSN: 1355-557X
Date Deposited: 13 Jan 2021 11:49
Last Modified: 26 Mar 2024 13:30

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