2011
DOI: 10.2983/035.030.0229
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Estimating Species-Specific Catch Rates in a Mixed-Species Dive Fishery

Abstract: Catch-per-unit-effort (CPUE) is frequently used as a measure of relative abundance in fisheries stock assessment. Determining reliable estimates of species-specific CPUE is more challenging in multispecies, rather than single-species, fisheries because identification of appropriate effort data for each species is often difficult. Divers in the South Australian abalone fishery can harvest blacklip (Haliotis rubra) and greenlip (Haliotis laevigata) abalone simultaneously, but report only a single value for daily… Show more

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Cited by 6 publications
(4 citation statements)
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“…Consequently, catch history, the spatial distribution of catches, and calculation of relevant CPUE measures Gorfine and Dixon, 2001;Hart et al, 2009;Burch et al, 2011), which provide an index of relative abalone abundance, are used widely-but with care-in all states when determining stock status. These data have been supplemented by (1) extensive biological data to inform an understanding of metapopulation dynamics (Day and Shepherd, 1995;Worthington et al, 1995;Helidoniotis et al, 2011; Reviews in Fisheries Science vol.…”
Section: State-based Stock Assessmentmentioning
confidence: 99%
See 1 more Smart Citation
“…Consequently, catch history, the spatial distribution of catches, and calculation of relevant CPUE measures Gorfine and Dixon, 2001;Hart et al, 2009;Burch et al, 2011), which provide an index of relative abalone abundance, are used widely-but with care-in all states when determining stock status. These data have been supplemented by (1) extensive biological data to inform an understanding of metapopulation dynamics (Day and Shepherd, 1995;Worthington et al, 1995;Helidoniotis et al, 2011; Reviews in Fisheries Science vol.…”
Section: State-based Stock Assessmentmentioning
confidence: 99%
“…Fishers are required to complete a research logbook for each fishing day. These logbook data permit evaluation of the spatial dynamics of the fishery and are used to generate species-specific indices of relative abundance (catch per unit effort [CPUE]; Burch et al, 2011). Fishers also complete catch disposal records (CDRs) that accompany the catch and are used to decrement quotas following finalization by processors.…”
Section: Samentioning
confidence: 99%
“…Although there are concerns around Aggregation of catch/effort data requires a spatial scale sufficient to meet the minimum data requirements of the stock parameter to be estimated, balanced against the need to assess at a biologically relevant spatial scale. For example, while CPUE often provides the only available index of relative abundance for abalone it cannot be reliably estimated where fewer than 10 daily records are available in any one year (Burch et al, 2011). Additionally, in many jurisdictions, published fishery data must include daily catch records from a minimum of five licence holders to protect individual confidentiality.…”
Section: Fleet Dynamicsmentioning
confidence: 99%
“…modelling of several effort estimation methods (Burch et al 2011) and several commercial catch sampling methods (Burch et al 2010). Plaganyi and Butterworth (2010), Plaganyi et al (2011) developed a spatial model that was used to capture illegal catch effects in the South African abalone fishery.…”
Section: Sub-zone Population Modelmentioning
confidence: 99%