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New puerulus collector design suitable for fishery-dependent settlement monitoring

journal contribution
posted on 2023-05-18, 09:32 authored by Graeme EwingGraeme Ewing, Stewart FrusherStewart Frusher
Fishery-independent diver-based puerulus settlement monitoring has been conducted for over two decades in sheltered inshore shallow sites on the Tasmanian coast and has been utilized in the development of a predictive capacity for the Tasmanian lobster fishery. However, the majority of catches in this fishery are sourced from deep (>50 m), remote, and highly exposed areas where it is impractical and expensive to conduct fishery independent routine settlement monitoring. To determine if pueruli settle in deeper waters,we adapted a crevice puerulus collector to fit within a lobster trap frame specifically designed to be deployed and serviced by vessels typical of the Tasmanian lobster fleet. A 5-month trial yielded puerulus catches similar to those from inshore shallow sites including recording puerulus from waters more than 100 m depth. The collector design was reported by fishers to be safe and convenient to service in regions exposed to strong westerly winds and swell more than 7 m. This collector will allow a cost-effective fishery-dependent approach to puerulus settlement monitoring utilizing commercial fishers for field operations and researchers for administration, sorting, and analysis.

Funding

Fisheries Research & Development Corporation

History

Publication title

ICES Journal of Marine Science

Volume

72

Issue

Supplement 1

Pagination

i225-i231

ISSN

1054-3139

Department/School

Institute for Marine and Antarctic Studies

Publisher

Academic Press Ltd Elsevier Science Ltd

Place of publication

24-28 Oval Rd, London, England, Nw1 7Dx

Rights statement

Copyright 2015 International Council for the Exploration of the Sea

Repository Status

  • Restricted

Socio-economic Objectives

Fisheries - wild caught not elsewhere classified

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