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Management issues and options for small scale holobenthic octopus fisheries

Citation

Emery, TJ and Hartmann, K and Gardner, C, Management issues and options for small scale holobenthic octopus fisheries, Ocean & Coastal Management, 120 pp. 180-188. ISSN 0964-5691 (2016) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier Ltd.

DOI: doi:10.1016/j.ocecoaman.2015.12.004

Abstract

Octopuses are a difficult resource to manage due to their short life span, rapid growth, high natural mortality and sensitivity to environmental conditions. These biological traits result in seasonal fluctuations in abundance and subsequent landings. Twenty two octopus fisheries were reviewed from 17 countries to examine the application and effectiveness of different management measures for consideration in the Tasmanian Octopus pallidus fishery in Australia. While the most commonly used measures in these fisheries were input controls, particularly seasonal closures and minimum size limits, these controls are poorly suited to semelparous, holobenthic octopuses such as Octopus pallidus. A semelparous reproductive strategy means that minimum size limits don't allow animals to reproduce prior to capture. A holobenthic life history strategy means that fishery-wide seasonal closures are unable to address variation in biological characteristics (e.g. size at maturity) across sub-stocks and collectively reduce effort on vulnerable life stages. Seasonal closures and minimum size limits also reduce the economic efficiency of the fleet and may diminish fishery productivity through effort displacement and serial depletion. A rotational system of effort or cap on total effort that provides flexibility to fishers and effectively spreads fishing effort, allowing different areas or sub-stocks to recover, could be a more effective option for achieving the objectives of most octopus fisheries.

Item Details

Item Type:Refereed Article
Keywords:Octopus pallidus, Tasmania, fisheries management, holobenthic, input controls, minimum size limits, fishery closures
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)
Author:Gardner, C (Professor Caleb Gardner)
ID Code:105461
Year Published:2016
Web of Science® Times Cited:1
Deposited By:Centre for Fisheries and Aquaculture
Deposited On:2016-01-05
Last Modified:2017-12-06
Downloads:0

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