Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/33826
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Culturing the sea cucumber Holothuria poli in open-water integrated multi-trophic aquaculture at a coastal Mediterranean fish farm
Author(s): Cutajar, Karl
Falconer, Lynne
Massa-Gallucci, Alexia
Cox, Rachel E
Schenke, Lena
Bardócz, Tamás
Sharman, Angus
Deguara, Simeon
Telfer, Trevor C
Contact Email: karl.cutajar1@stir.ac.uk
Keywords: Sea cucumber
IMTA
Sustainability
Biodeposition
Circular economy
Issue Date: 15-Mar-2022
Date Deposited: 13-Jan-2022
Citation: Cutajar K, Falconer L, Massa-Gallucci A, Cox RE, Schenke L, Bardócz T, Sharman A, Deguara S & Telfer TC (2022) Culturing the sea cucumber Holothuria poli in open-water integrated multi-trophic aquaculture at a coastal Mediterranean fish farm. Aquaculture, 550, Art. No.: 737881. https://doi.org/10.1016/j.aquaculture.2021.737881
Abstract: The survival and growth of the sea cucumber Holothuria poli were assessed during a 12-month field study when cultured at a commercial fish farm in Malta as part of an integrated multi-trophic aquaculture (IMTA) system. Sea cucumbers were cultured directly below a fish cage at 0 m, E0, at 10 m (E10) and 25 m (E25) distances from the cage and at two reference sites (R1 and R2) located over 800 m away from the fish farm. Mass mortalities were recorded at E0 within the first month of the study due to smothering by settled wastes. All individuals died at one of the reference sites, R1, by the end of the study. After deducting missing sea cucumbers, survival rates at E10 (23%) and E25 (33%) from the fish cage were similar to the remaining reference site (R2) (27%). Stocking density and physical disturbances to the sea cucumber cage setup were also probable cause for the low survival rates. The relative weight gain (RWG) and specific growth rates (SGR) of H. poli varied significantly between sites close to the fish farm and the reference site. The SGR of H. poli at E10 (0.18 ±0.02% day-1) and E25 (0.20 ±0.01% day-1) was positive over the whole study period while no average growth was recorded at the reference site (-0.04 ±0.07% day-1) over the same period. Differences in RWG and SGR were recorded throughout the study. The overall growth observed in H. poli by January was followed by a drop in growth rate across all sites and an increase in SGR at E25 in July. Slower growth rates were observed as water temperature approached 15 oC. The results indicated that the sediments near the commercial fish cage provided an enriched source of food that supported significantly better growth in H. poli. This suggests that H. poli in IMTA might have the potential to uptake organic farm waste and increase aquaculture production, albeit with important considerations for setup design and stocking density.
DOI Link: 10.1016/j.aquaculture.2021.737881
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript ofCutajar K, Falconer L, Massa-Gallucci A, Cox RE, Schenke L, Bardócz T, Sharman A, Deguara S & Telfer TC (2022) Culturing the sea cucumber Holothuria poli in open-water integrated multi-trophic aquaculture at a coastal Mediterranean fish farm. Aquaculture, 550, Art. No.: 737881. https://doi.org/10.1016/j.aquaculture.2021.737881 © 2022, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Files in This Item:
File Description SizeFormat 
Accepted_manuscript.pdfFulltext - Accepted Version924.29 kBAdobe PDFUnder Embargo until 2023-01-04    Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved https://creativecommons.org/publicdomain/zero/1.0/

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.