Journal article
Spinning in different directions: western rock lobster larval condition varies with eddy polarity, but does their diet?
Journal of Plankton Research, Vol.37(3), pp.542-553
2015
Abstract
Larvae of the western rock lobster (Panulirus cygnus) that occur in the south-east Indian Ocean offshore of Western Australia have been found to be in poorer nutritional condition in anticyclonic compared with cyclonic mesoscale eddies. The reason for this is unknown, but culture-based experiments have shown that diet composition and water temperature are key determinants of phyllosoma health and survival. Whether differences in prey composition are the cause of poor phyllosoma condition in situ was tested in the present study by high-throughput sequencing of 18S rDNA amplified from the gut contents of 48 lobster larvae from two cyclonic and two anticyclonic eddies. We determined that phyllosoma prey composition did not vary significantly between anticyclonic and cyclonic eddies and that any variation was at the level of sample site (permutational multivariate analysis of variance F-2,F-35 = 5.12, P < 0.0001). We therefore reject the hypothesis that prey composition alone during the late larval phase determines larval condition. This indicates that the competing hypotheses are more likely: for example, that eddy water temperature is responsible for reducing the condition of phyllosomas directly, or indirectly by impoverishing the nutritional value of their foodweb.
Details
- Title
- Spinning in different directions: western rock lobster larval condition varies with eddy polarity, but does their diet?
- Authors/Creators
- R. O'Rorke (Author/Creator)A.G. Jeffs (Author/Creator)M. Wang (Author/Creator)A.M. Waite (Author/Creator)L.E. Beckley (Author/Creator)S.D. Lavery (Author/Creator)
- Publication Details
- Journal of Plankton Research, Vol.37(3), pp.542-553
- Publisher
- Oxford University Press
- Identifiers
- 991005544308807891
- Copyright
- © The Author 2015.
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.659 Decapoda
- Web Of Science research areas
- Marine & Freshwater Biology
- Oceanography
- ESI research areas
- Plant & Animal Science