Fussy feeders: Phyllosoma larvae of the western rocklobster (Panulirus cygnus) demonstrate prey preference

Saunders, Megan I., Thompson, Peter A., Jeffs, Andrew G., Saewstroem, Christin, Sachlikidis, Nikolas, Beckley, Lynnath E. and Waite, Anya M. (2012) Fussy feeders: Phyllosoma larvae of the western rocklobster (Panulirus cygnus) demonstrate prey preference. Plos One, 7 5: e36580.1-e36580.9. doi:10.1371/journal.pone.0036580


Author Saunders, Megan I.
Thompson, Peter A.
Jeffs, Andrew G.
Saewstroem, Christin
Sachlikidis, Nikolas
Beckley, Lynnath E.
Waite, Anya M.
Title Fussy feeders: Phyllosoma larvae of the western rocklobster (Panulirus cygnus) demonstrate prey preference
Journal name Plos One   Check publisher's open access policy
ISSN 1932-6203
Publication date 2012-05
Sub-type Article (original research)
DOI 10.1371/journal.pone.0036580
Open Access Status DOI
Volume 7
Issue 5
Start page e36580.1
End page e36580.9
Total pages 9
Place of publication San Francisco, CA, United States
Publisher Public Library of Science
Collection year 2013
Language eng
Abstract The Western Rocklobster (Panulirus cygnus) is the most valuable single species fishery in Australia and the largest single country spiny lobster fishery in the world. In recent years a well-known relationship between oceanographic conditions and lobster recruitment has become uncoupled, with significantly lower recruitment than expected, generating interest in the factors influencing survival and development of the planktonic larval stages. The nutritional requirements and wild prey of the planktotrophic larval stage (phyllosoma) of P. cygnus were previously unknown, hampering both management and aquaculture efforts for this species. Ship-board feeding trials of wild-caught mid-late stage P. cygnus phyllosoma in the eastern Indian Ocean, off the coast of Western Australia, were conducted in July 2010 and August-September 2011. In a series of experiments, phyllosoma were fed single and mixed species diets of relatively abundant potential prey items (chaetognaths, salps, and krill). Chaetognaths were consumed in 2-8 times higher numbers than the other prey, and the rate of consumption of chaetognaths increased with increasing concentration of prey. The highly variable lipid content of the phyllosoma, and the fatty acid profiles of the phyllosoma and chaetognaths, indicated they were from an oligotrophic oceanic food chain where food resources for macrozooplankton were likely to be constrained. Phyllosoma fed chaetognaths over 6 days showed significant changes in some fatty acids and tended to accumulate lipid, indicating an improvement in overall nutritional condition. The discovery of a preferred prey for P. cygnus will provide a basis for future oceanographic, management and aquaculture research for this economically and ecologically valuable species.
Keyword Lobster jasus-edwardsii
Western rock lobster
Early-stage Phyllosoma
Diet
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article Number e36580

Document type: Journal Article
Sub-type: Article (original research)
Collections: Global Change Institute Publications
Official 2013 Collection
 
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