Successful large-scale hatchery culture of sandfish (Holothuria scabra) using micro-algae concentrates as a larval food source

Thane A Militz; Esther Leini; Nguyen Dinh Quang Duy; Paul C Southgate

doi:10.1016/j.aqrep.2017.11.005

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Successful large-scale hatchery culture of sandfish (Holothuria scabra) using micro-algae concentrates as a larval food source

Journal article

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Successful large-scale hatchery culture of sandfish (Holothuria scabra) using micro-algae concentrates as a larval food source

Thane A Militz, Esther Leini, Nguyen Dinh Quang Duy and Paul C Southgate

Aquaculture Reports, Vol.9, pp.25-30

2018

DOI: https://doi.org/10.1016/j.aqrep.2017.11.005

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Abstract

sea cucumber

bêche-de-mer

survival

growth

aquaculture

This paper reports methodology for large-scale hatchery culture of sandfish, Holothuria scabra, in the absence of live, cultured micro-algae. We demonstrate how commercially-available micro-algae concentrates can be incorporated into hatchery protocols as the sole larval food source to completely replace live, cultured microalgae. Micro-algae concentrates supported comparable hatchery production of sandfish to that of live, cultured micro-algae traditionally used in large-scale hatchery culture. The hatchery protocol presented allowed a single technician to achieve production of more than 18,800 juvenile sandfish at 40 days post-fertilisation in a lowresource hatchery in Papua New Guinea. Growth of auricularia larvae fed micro-algae concentrates was represented by the equation length (μm) =307.8 ×ln(day)+ 209.2 (R2 =0.93) while survival over the entire 40 day hatchery cycle was described by the equation survival=2×day-1.06 (R2 =0.74). These results show that micro-algae concentrates have great potential for simplifying hatchery culture of sea cucumbers by reducing infrastructural and technical resources required for live micro-algae culture. The hatchery methodology described in this study is likely to have applicability to low-resource hatcheries throughout the Indo-Pacific and could support regional expansion of sandfish hatchery production.

Details

Title: Successful large-scale hatchery culture of sandfish (Holothuria scabra) using micro-algae concentrates as a larval food source
Authors: Thane A Militz (Corresponding Author) - University of the Sunshine Coast, Queensland, Australian Centre for Pacific Islands Research
Esther Leini (Author) - National Fisheries Authority, Papua New Guinea
Nguyen Dinh Quang Duy (Author) - Research Institution for Aquaculture No. 3, Vietnam
Paul C Southgate (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Aquaculture Reports, Vol.9, pp.25-30
Publisher: Elsevier BV
Date published: 2018
DOI: 10.1016/j.aqrep.2017.11.005
ISSN: 2352-5134
Organisation Unit: School of Science and Engineering - Legacy; Australian Centre for Pacific Islands Research; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450363102621
Output Type: Journal article

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Web Of Science research areas: Fisheries

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