Direct measurement of fishing mortality in abalone (Haliotis rubra Leach) off southeastern Australia

McShane, Paul; Smith, Murray G.

doi:10.1016/0165-7836(89)90024-6

Cited by 13 publications

(5 citation statements)

References 9 publications

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“…Moreover, there were consistent increases in sub-legal size individuals (>100 mm SL) in fished areas. This observation lends support to hypotheses of intra-specific competition for food and space affecting size at emergence (McShane and Smith, 1989;Pederson et al, 2008) rather than inter-specific and/or predator interactions with blacklip that would have been unlikely to change between sampling times in this study. A similar process would explain the increased number of blacklip < 80 mm SL within fished areas after fishing, but not that observed in the control area, and highlights the complexity of processes effecting changes in population structure (Pederson et al, 2008).…”

Section: Discussionsupporting

confidence: 75%

Detecting change in density and biomass of a benthic marine invertebrate following commercial fishing

et al. 2012

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Section: Discussionsupporting

confidence: 75%

Detecting change in density and biomass of a benthic marine invertebrate following commercial fishing

et al. 2012

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“…This is unusual for populations of abalone which generally show skewed length frequency distributions, particularly for fished populations (Sloan & Breen 1988;McShane & Smith 1989). One explanation for the results from our study is that both recruitment and fishing are of relatively low magnitude.…”

Section: Discussionmentioning

confidence: 41%

Spatial variation and commercial fishing of New Zealand abalone (Haliotis irisandH. australis)

McShane¹,

Mercer²,

Naylor³

1994

New Zealand Journal of Marine and Freshwater Research

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The New Zealand abalone fishery produces about 1200 t annually, mostly from southern New Zealand. The fishery, based on Haliotis iris, is managed over broad management areas within which fishing intensity is spatially dispersed. The size composition of the commercial catch depends on location within a management area but is similar for divers fishing individual populations of H. iris and reflects the size composition of natural populations. For most populations, length-frequency distributions of abalone were normally distributed: the mean shell length of H. iris was found to vary within populations over small spatial scales (100s m). The relative abundance of juvenile H. iris was low in relation to adults suggesting, at least for exposed populations, that rates of recruitment to populations of H. iris may be low. The relative abundance and mean shell length of juveniles and adults of H. australis was much less than that of H. iris. The scarcity of H. australis and the lack of separate catch quotas for the two species are factors which explain the low to zero catch of H. australis. The spatial variation in the size composition of H. iris suggests that management would be more appropriate over spatial scales which reflect local populations rather than the large spatial areas which are used to manage the New Zealand abalone fishery. M94007

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“…Some authors have reported that these groups are deleterious for abalone juveniles (Ault and De Martini, 1987;McShane and Smith, 1989); however, in this study we did not find evidence to that effect.…”

Section: Agradecimientoscontrasting

confidence: 57%

Microhabitat and associated biota of abalone juveniles, Haliotis fulgens and H. corrugata, in Bahía Tortugas, Baja California Sur, Mexico

et al. 2003

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Abalone is an important economical resource on the west coast of Baja California. The most important species in this fishery are green and pink abalone (Haliotis fulgens and H. corrugata, respectively). Overfishing has been implicated in the decline of the Mexican abalone fishery. Among the population parameters, recruitment is a highly variable event. To obtain a better understanding of the ecology of abalone juvenile recruitment, the physical and biological characteristics of the microhabitat of juveniles of green and pink abalone were studied at Bahía Tortugas, Baja California Sur (Mexico), during autumn and spring from 1996 to 1998. Two abalone reefs with different depth, relief and wave exposure were surveyed: Clam Bay, with depths of 0.5 to 5 m, and Morro de Adentro, with depths of 6 to 12 m. Four different bottom types were recognized: (a) sheltered and low relief bottom, (b) semiexposed and moderate relief bottom, (c) exposed and high relief bottom, and (d) exposed and moderate relief bottom. Juveniles of green and pink abalone from 3 to 13 mm shell length were observed under small rocks, pebbles and flat stones no longer than 15|00E2|??20 cm, always covered with crusts of coralline algae. Several tiny juveniles of Fisurella, Stenoplax, and Crepipatella of similar sizes (5–10 mm) shared the microhabitat. Juveniles between 15 and 90 mm shell length were found under flat, rhombic or irregular-shaped rocks (20–110 mm length), most of them deployed in imbricate arrangement. Abalone juveniles shared this microhabitat with bryozoans, sponges, ascidians, chitons, and annelids. Bottoms with imbricate arrangement, low wave exposure, and the low depth of Clam Bay were favorable for the high occurrence of juveniles of H. fulgens. Juveniles of H. corrugata showed a high occurrence in exposed and deeper zones of Morro de Adentro.

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Direct measurement of fishing mortality in abalone (Haliotis rubra Leach) off southeastern Australia

Cited by 13 publications

References 9 publications

Detecting change in density and biomass of a benthic marine invertebrate following commercial fishing

Detecting change in density and biomass of a benthic marine invertebrate following commercial fishing

Spatial variation and commercial fishing of New Zealand abalone (Haliotis irisandH. australis)

Microhabitat and associated biota of abalone juveniles, Haliotis fulgens and H. corrugata, in Bahía Tortugas, Baja California Sur, Mexico

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