Journal
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
Volume 53, Issue 1, Pages 60-76Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00288330.2018.1480499
Keywords
Sea cucumber; tank-based experiment; growth rates; Sparus aurata; integrated multi-trophic aquaculture
Categories
Funding
- Fundacao para a Ciencia e a Tecnologia [PTDC/MAR/119363/2010, PTDC/MAR-BIO/5948/2014]
- Fundacao para a Ciencia e a Tecnologia (FCT) postdoctoral grant [SFRH/BPD/70689/2010]
- FCT Investigator Programme-Career Development [IF/00998/2014]
- Fundação para a Ciência e a Tecnologia [PTDC/MAR/119363/2010] Funding Source: FCT
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Holothuria arguinensis is a potential species for sea cucumber aquaculture in Europe. In a first experiment, feeding rate (FR), growth, absorption efficiency (AE) and survival of adults (135.01 +/- 10.87g eviscerated weight) were assessed under sediment tank conditions. In a second experiment, the feasibility to use sea bream (Sparus aurata) biodeposits as a food source was studied for adults (168.69 +/- 14.59g eviscerated weight). Individuals in the first experiment showed an increase of weight (specific growth rate (SGR)=0.2% d(-1)), positive FRs and mean value of AE close to 80% with a mean organic matter content of 90.07 +/- 11.5mg/g in the offered sediment. Sea cucumbers fed with fish biodeposits showed a reduction of weight (SGR<-0.14%d(-1)), low FRs and negative values of AE. The influence of low salinity and temperature during experiments should be considered to explain these results. Indeed, sea cucumbers can be affected by a decrease of these parameters during winter months resulting in a period of inactivity.
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