Condition of larvae of western rock lobster (Panulirus cygnus) in cyclonic and anticyclonic eddies of the Leeuwin Current off Western Australia

M. Wang; R. O'Rorke; A.M. Waite; L.E. Beckley; P. Thompson; A.G. Jeffs

doi:10.1071/MF14121

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Condition of larvae of western rock lobster (Panulirus cygnus) in cyclonic and anticyclonic eddies of the Leeuwin Current off Western Australia

Journal article

Peer reviewed

Condition of larvae of western rock lobster (Panulirus cygnus) in cyclonic and anticyclonic eddies of the Leeuwin Current off Western Australia

M. Wang, R. O'Rorke, A.M. Waite, L.E. Beckley, P. Thompson and A.G. Jeffs

Marine and Freshwater Research, Vol.66(12), pp.1158-1167

2015

DOI: https://doi.org/10.1071/MF14121

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Abstract

Changes in the offshore oceanographic processes are suspected to be the cause of a recent dramatic decline in the settlement of post-larvae of the Western Australian spiny lobster (Panulirus cygnus), which has greatly reduced the productivity from the world's second-largest spiny lobster fishery. The present study assessed whether there are differences in the nutritional condition of the larvae of P. cygnus sampled from two pairs of cyclonic eddies (CEs) and anticyclonic eddies (AEs). Morphometric and biochemical analyses were undertaken on the mid-late-stage larvae (VI, VII, VIII) sampled offshore from two pairs of adjacent counter-rotating mesoscale eddies in the Leeuwin Current off Western Australia. The results showed that larvae captured from CEs had greater average total dry mass (P<0.001) than those from AEs. Stage VIII larvae from CEs contained more protein (P<0.008) (38.5% ±5.4s.e.) and lipid (P<0.005) (67.2% ±12.1) than did those from AEs. The possible causes for these differences are uncertain but may be related to differences in water temperatures in CEs v. AEs influencing the ability of phyllosomas to accumulate nutritional reserves

Details

Title: Condition of larvae of western rock lobster (Panulirus cygnus) in cyclonic and anticyclonic eddies of the Leeuwin Current off Western Australia
Authors/Creators: M. Wang (Author/Creator) - Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche
R. O'Rorke (Author/Creator) - University of Auckland
A.M. Waite (Author/Creator) - The University of Western Australia
L.E. Beckley (Author/Creator) - Murdoch University
P. Thompson (Author/Creator) - Hobart Corporation
A.G. Jeffs (Author/Creator) - Istituto di Scienze Marine del Consiglio Nazionale delle Ricerche
Publication Details: Marine and Freshwater Research, Vol.66(12), pp.1158-1167
Publisher: CSIRO Publishing
Identifiers: 991005545013807891
Copyright: © 2015 CSIRO.
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: Fisheries; Limnology; Marine & Freshwater Biology; Oceanography
ESI research areas: Plant & Animal Science