Improved forecasts of recreational western rock lobster (Panulirus cygnus) catches in Western Australia, by predicting licence usage

Melville‐Smith, Roy; Thomson, Adrian W.; Caputi, Nick

doi:10.1016/j.fishres.2003.12.001

Cited by 16 publications

(11 citation statements)

References 5 publications

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“…The abundance of puerulus settlement not only allows for a reliable predictor of commercial and recreation rock lobster catch in the fishery (Caputi et al. , 1995a; Melville‐Smith et al. , 2001), but the spatial distribution of the settlement enables a reliable prediction of the shift in spatial distribution of the catch and fishing effort.…”

Section: Discussionmentioning

confidence: 99%

Impact of the Leeuwin Current on the spatial distribution of the puerulus settlement of the western rock lobster (Panulirus cygnus) and implications for the fishery of Western Australia

Caputi¹

2008

Fisheries Oceanography

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Previous studies have shown that the strength of the Leeuwin Current is correlated with the level of the puerulus (post-larval stage) settlement in the western rock lobster (Panulirus cygnus). The level of puerulus settlement has also been shown to be a reliable predictor of catch in the rock lobster fishery in Western Australia, 3 and 4 yr later. This study examines the impact of the south-flowing Leeuwin Current on the spatial distribution of the puerulus settlement along the coast based on information from 10 settlement sites. In years of strong Leeuwin Current, the location of the peak settlement occurs further south by up to 2°l atitude compared with years of weak Leeuwin Current. The key months of Leeuwin Current strength that affect the abundance of the puerulus settlement are generally February to April, during the early larval stages. However, the months that affect the spatial distribution are from June onwards, which is closer to the period of puerulus settlement that starts in about August each year. The mean latitude of puerulus settlement shows a very good relationship with Leeuwin Current strength in June to December (r = 0.86, P < 0.001). The variation in spatial distribution in puerulus settlement can be used to predict the spatial distribution of fishing effort and catch, 3 and 4 yr later (r = 0.78 and 0.84, respectively, P < 0.001).

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Section: Discussionmentioning

confidence: 99%

Impact of the Leeuwin Current on the spatial distribution of the puerulus settlement of the western rock lobster (Panulirus cygnus) and implications for the fishery of Western Australia

Caputi¹

2008

Fisheries Oceanography

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“…A forecast model has been developed to predict estimates of recreational catch from the mail survey, which suggests an increase in the recreational catch is driven by higher fishing effort (from increased licence usage and participation in the recreational fishery) and increased abundance following increased puerulus settlement (Melville‐Smith et al . ; Crowe et al . ; de Lestang et al .…”

Section: Discussionmentioning

confidence: 99%

Recreational fisheries data requirements for monitoring catch shares

Ryan

Trinnie

Jones

et al. 2016

Fisheries Management Eco

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Catch sharing among fishing sectors requires credible data for decision‐making, allocation and management. Integrated Fisheries Management in Western Australia formally allocates allowable catch for Western Rock Lobster (WRL) (Panulirus cygnus) with 95% commercial and 5% recreational; Roe's abalone (Haliotis roei) with 36 t commercial and 40 t recreational; and West Coast Demersal Scalefish (WCDS) with 64% commercial and 36% recreational. While commercial catch is obtained from statutory returns, estimates of recreational catches from surveys depend upon spatial and temporal scales of the resource and fishing activity. WRL is a single‐species, licensed recreational fishery operating across large spatial and temporal scales. Mail surveys supplemented with occasional phone‐recall surveys provide cost‐effective monitoring. Roe's abalone is a single‐species, licensed recreational fishery operating over restricted spatial and temporal scales appropriate for aerial‐access surveys. The WCDS recreational fishery targets multiple species across large spatial and temporal scales. The introduction of charter logbooks and a Recreational Fishing from Boat Licence has provided the basis for monitoring charter and private boat‐based recreational fishing. Monitoring allocations is ongoing, with routine surveys required to provide catch estimates with a known confidence. This study highlights the application and importance of surveys in providing timely and accurate data for formal catch sharing.

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“…In South Africa, Western Australia and New Zealand, annual recreational catches of spiny lobsters are ~379, 630 and 300 t, respectively (Cockcroft & Mackenzie 1997, Melville-Smith et al 2001. This represents 25, 4.8 and ~10% of the total annual landings in the respective countries.…”

Section: Final Remarksmentioning

confidence: 99%

Indirect effects of recreational fishing on behavior of the spiny lobster Panulirus argus

Parsons¹,

Eggleston²

2005

Mar. Ecol. Prog. Ser.

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Sublethal disturbance may lead to behavioral modifications that have detrimental consequences for the individual. Sublethal disturbance is an indirect effect of fishing that has seldom been examined. In summer 2003, we conducted surveys on the Caribbean spiny lobster Panulirus argus in the Florida Keys, USA, before and after a 2 d mini-season exclusively for recreational sportdivers to assess the frequency of injured lobsters. We also conducted (1) a tethering experiment to assess the influence of disturbance and injury on predation-induced mortality, and (2) Y-maze laboratory experiments to assess the effect of injury and disturbance on the shelter choice of conspecifics. Injury surveys revealed an immediate increase (to 27.16%) in the percentage of injured lobsters from pre-to post mini-season within patch reef habitats, but only a small increase in injured lobsters amongst patch head habitats. Tethering trials revealed that injured lobsters were more likely to succumb to predation than uninjured controls, while the shelter choice experiments demonstrated that the usual ability to attract conspecifics was altered by injury. Considering the ability of this fishery to unintentionally injure > 25% of the lobster population in patch reef habitats in just 2 d, the potential population consequences to spiny lobsters must be examined.

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Improved forecasts of recreational western rock lobster (Panulirus cygnus) catches in Western Australia, by predicting licence usage

Cited by 16 publications

References 5 publications

Impact of the Leeuwin Current on the spatial distribution of the puerulus settlement of the western rock lobster (Panulirus cygnus) and implications for the fishery of Western Australia

Impact of the Leeuwin Current on the spatial distribution of the puerulus settlement of the western rock lobster (Panulirus cygnus) and implications for the fishery of Western Australia

Recreational fisheries data requirements for monitoring catch shares

Indirect effects of recreational fishing on behavior of the spiny lobster Panulirus argus

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