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Large-scale patterns in puerulus settlement and links to fishery recruitment in the southern rock lobster (jasus edwardsii), across south-eastern Australia

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Linnane, A and McGarvey, R and Gardner, C and Walker, TI and Matthews, J and Green, B and Punt, AE (2013) Large-scale patterns in puerulus settlement and links to fishery recruitment in the southern rock lobster (jasus edwardsii), across south-eastern Australia. Large-Scale patterns in puerulus settlement and links to fishery recruitment in the southern rock lobster (Jasus edwardsii), across south-eastern Australia. pp. 1-9. ISSN 1054-3139

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Abstract

Monthly monitoring of puerulus settlement across South Australia, Victoria and Tasmania has been undertaken since the early 1990s.
Firstly, annual trends in settlement were spatially analysed across the three States. In South Australian and Victorian settlement patterns
were closely related. In Tasmania, settlement sites along the northeast coast were positively correlated, but showed no relationship with
areas further south or in any other State. Secondly, annual settlement indices were correlated with lagged estimates of fishery recruitment.
In South Australia, the strongest correlations between settlement and recruitment to legal size were observed using a 4–5- year time-lag.
Within Victoria and Tasmania, the period from settlement to recruitment at 60 mm carapace length (CL) was 2 and 3 years, respectively.
The period from 60 mmto legal size wais another 2–3 years, suggesting that the total time from settlement to the fishery ranges from 4–6
years in these regions. The correlation between settlement and recruitment was used to forecast future estimates of exploitable biomass in
one region of South Australia. The results indicate that puerulus monitoring is a relatively robust indicator of future fishery performance
and should be regarded as an important data source for rock lobster resources within south-eastern Australia.

Item Type: Article
Keywords: forecasting, Jasus edwardsii, spiny lobster, puerulus, recruitment, settlement.
Journal or Publication Title: Large-Scale patterns in puerulus settlement and links to fishery recruitment in the southern rock lobster (Jasus edwardsii), across south-eastern Australia
Page Range: pp. 1-9
ISSN: 1054-3139
Identification Number - DOI: 10.1093/icejms/fst176
Additional Information:

Copyright 2013 Oxford University Press

Date Deposited: 26 Nov 2013 03:57
Last Modified: 18 Nov 2014 04:56
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