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Influence of different feeding regimes on the survival, growth, and biochemical composition of Acropora coral recruits

Conlan, Jessica A, Humphrey, Craig A, Severati, Andrea and Francis, David S 2017, Influence of different feeding regimes on the survival, growth, and biochemical composition of Acropora coral recruits, PLoS one, vol. 12, no. 11, pp. 1-20, doi: 10.1371/journal.pone.0188568.

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Title Influence of different feeding regimes on the survival, growth, and biochemical composition of Acropora coral recruits
Author(s) Conlan, Jessica A
Humphrey, Craig A
Severati, Andrea
Francis, David SORCID iD for Francis, David S orcid.org/0000-0002-4829-6926
Journal name PLoS one
Volume number 12
Issue number 11
Article ID e0188568
Start page 1
End page 20
Total pages 20
Publisher Public Library of Science
Place of publication San Francisco, Calif.
Publication date 2017-11-28
ISSN 1932-6203
1932-6203
Keyword(s) coral planulae
survivorship
development
feeding regimes
enriched rotifers
unfiltered seawater
Acropora coral
Acropora hyacinthus
Acropora loripes
Acropora millepora
Acropora tenuis
survival
growth
health
science & technology
Summary Heterotrophic feeding in newly-settled coral planulae can potentially improve survivorship and accelerate early development in some species; however, an optimal diet to facilitate this does not currently exist. This study evaluated the efficacy of three heterotrophic feeding regimes (enriched rotifers, unfiltered seawater, and a novel, particulate diet), against a wholly-phototrophic treatment on Acropora hyacinthus, A. loripes, A. millepora, and A. tenuis recruits, over 93 days post-settlement. The unfiltered seawater treatment recorded maximum survival for all species (A. hyacinthus 95.9±8.0%, A. loripes: 74.3±11.5%, A. millepora: 67±12.7%, A. tenuis: 53.2±11.3%), although not significant. Growth (% surface area gain) was also greatest in the unfiltered seawater, and this was significant for A. millepora (870±307%) and A. tenuis (693±91.8%) (p<0.05). Although total lipid concentration was relatively stable across treatments, the lipid class composition exhibited species-specific responses to each treatment. Lower saturated and higher polyunsaturated fatty acids appeared beneficial to recruit performance, particularly in the unfiltered seawater, which generally contained the highest levels of 20:5n-3 (EPA), 22:6n-3 (DHA), and 20:4n-6 (ARA). The present study demonstrates the capacity of a nutritionally adequate and readily accepted heterotrophic feeding regime to increase coral recruit survival, growth, and health, which can greatly reduce the time required in cost- and labour-intensive culture.
Language eng
DOI 10.1371/journal.pone.0188568
Field of Research MD Multidisciplinary
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2017, Conlan et al
Persistent URL http://hdl.handle.net/10536/DRO/DU:30105624

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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