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Tasmanian octopus fishery assessment 2015/2016

Citation

Emery, TJ and Hartmann, K, Tasmanian octopus fishery assessment 2015/2016, University of Tasmania Institute for Marine and Antarctic Studies, Hobart, Tasmania (2016) [Government or Industry Research]


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Abstract

Biomass in the Octopus pallidus fishery is indicated by trends in catch per unit effort (CPUE), which decreased from 2005/06 to 2011/12. Since 2011/12, CPUE has fluctuated around 60% of the reference year. Catch is used as a proxy for fishing mortality and in 2015/16 decreased to its lowest level since 2011/12, with similar declines in fishing effort. Historical high levels of fishing effort are likely associated with declines in fishery-wide CPUE but the magnitude of this effect is masked by shifts in spatial fishing effort and the biology of the species. In 2015/16, fishing mortality reduced to within historically sustainable levels where future depletion of the biomass appears unlikely. On this basis Octopus pallidus in Tasmania is classified as a sustainable stock.

Item Details

Item Type:Government or Industry Research
Keywords:Octopus pallidus, fisheries management, Tasmania, molluscs, commercial fisheries
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fisheries Management
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Wild Caught Edible Molluscs
Author:Emery, TJ (Mr Timothy Emery)
Author:Hartmann, K (Dr Klaas Hartmann)
ID Code:110828
Year Published:2016
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2016-08-16
Last Modified:2016-08-17
Downloads:4 View Download Statistics

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