Article (Scientific journals)
Isotopic tracing of sediment components that are assimilated by epibiontic juveniles of Holothuria scabra (Holothuroidea)
Plotieau, Thomas; Lepoint, Gilles; Lavitra, Thiery et al.
2014In Journal of the Marine Biological Association of the United Kingdom, 94 (7), p. 1485 - 1490
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Keywords :
sea cucumber; stable isotopes; bacteria; echinoderm; sediment; aquaculture; deposit feeder; isotopic tracing
Abstract :
[en] Despite H. scabra’s wide distribution and status as one of the best candidates for sustaining the development of tropical sea cucumber aquaculture, very few data are available regarding the organic fraction it assimilates in practice. In this study we report experimental results where H. scabra’s diet was supplemented with various 15N-labelled organic fractions of sediment. We used juveniles weighing between 38- 88 mg at the beginning of the experiment (ca. 2 cm long and 30 days old). Their growth was measured over a four week period and their 15N composition recorded. The results showed that H. scabra juveniles assimilated all added organic components from both dissolved and particulate fractions of the sediment. Bacteria seem to be an important food source for juveniles, even more so than microphytobenthos (diatoms).
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
UMons (Laboratoire Biologie Marine et Biomimétisme)
IHSM (Tuléar, Madagascar)
Disciplines :
Zoology
Aquatic sciences & oceanology
Environmental sciences & ecology
Author, co-author :
Plotieau, Thomas;  Université de Mons - UMONS > Biologie Marine et Biomimétisme
Lepoint, Gilles  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Lavitra, Thiery;  Institut d'Halieutique et Sciences Marines (Tuléar, Madagascar) > Polyaquaculture Unit
Eeckhaut, Igor;  Université de Mons - UMONS > Biologie Marine et Biomimétisme
Language :
English
Title :
Isotopic tracing of sediment components that are assimilated by epibiontic juveniles of Holothuria scabra (Holothuroidea)
Publication date :
November 2014
Journal title :
Journal of the Marine Biological Association of the United Kingdom
ISSN :
0025-3154
eISSN :
1469-7769
Publisher :
Cambridge University Press, New York, United States - New York
Volume :
94
Issue :
7
Pages :
1485 - 1490
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Holothurian aquaculture and nutrition
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 19 March 2014

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