Recreational Scallop Research

D'Entrecasteaux Channel Scallop Survey 2017

Title: D'Entrecasteaux Channel Scallop Survey and Stock Status: 2017

Lead Agency: Institute for Marine and Antarctic Studies

The 2017 scallop survey found:

  • Commercial and doughboy scallops remain in very low densities in the D’Entrecasteaux Channel.
  • While moderate densities of queen scallops are present they are restricted to small and isolated beds in the central Channel region.  There is evidence of a number of cohorts in the queen scallop population, suggesting some limited recruitment in recent years.  The dominant size class is in the 80-90 mm size range and there are relatively few individuals larger than 100 mm.
  • The low standing stock of legal-sized queen scallops, overall limited area of the main beds and very low abundances of both commercial and doughboy scallops provide no scientific basis upon which to expect any recovery of stocks that would justify a scallop fishery in the D’Entrecasteaux Channel for at least the next 3-5 years.

DOWNLOAD THE REPORT. 



D'Entrecasteaux Channel Scallop Assessment Report 2006-2012

D'Entrecasteaux Scallop Report Cover Title: Assessment of scallop populations in the D'Entrecasteaux Channel 2006-2012
Lead Agency: Institute for Marine and Antarctic Studies

A fishery assessment report outlines the status of scallop populations in the D'Entrecasteaux Channel between 2006-2012. IMAS conducts recreational scallop fishery surveys every two years.

The D’Entrecasteaux Channel was closed to recreational fishing in 2011 and 2012 due to an assessment of low stocks and poor recruitment. This report summarises the findings of the IMAS dive surveys of scallop populations in the D’Entrecasteaux Channel from 2006 - 2012.

The dive surveys have been designed to provide basic population information on the scallop stocks, including relative trends in population size.

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Scallop Recruitment in the Entrecasteaux Channel

Title: Post-settlement processes affecting Commercial Scallop recruitment in south-eastern Tasmania
Lead Agency: Institute for Marine and Antarctic Studies
Date: September 2013

The aim of the study was to gain understanding about factors affecting recruitment of scallops, focusing on processes occurring at or shortly after settlement.

Specific aims included:

1. Role of habitat structure and sediment type on scallop densities.
2. Assess the relationships between dispersal and growth of recently settled scallops and site characteristics
3. Identify the main factors affecting survival of newly settled scallops.

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Recruitment and Retention of Scallops in the D'Entrecasteaux Channel

IMAS ReportTitle: Recruitment and retention of scallops in the D'Entrecasteaux Channel: Is there a relationship with scallop density?
Lead Agency: Institute for Marine and Antarctic Studies
Date: 1 September 2008 - 27 June 2013

The aim of the project was to provide necessary information to enable the current management of the recreational scallop fishery to be evaluated in a valid way.
Specific aims:
  1. Examine the importance of scallop density (spawner biomass) on synchronisation of spawning and recruitment success.
  2. Examine the relationship between scallop density and retention of recruits on scallop beds.
  3. Determine the origin of scallop recruits in the D'Entrecasteaux Channel.
Final Report Summary
The research confirmed that the commercial scallop (Pecten fumatus) in the Channel are genetically different than those on the East Coast. This indicates that the Channel is "self seeding" and reliant on scallop stock populations from within the Channel. This highlights the importance of protecting areas of high density spawning stock to increase the likelihood of steady and/or significant recruitment pulses for the Channel.

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Contact

Recreational Fishing Enquiries
Recreational Fisheries Section
1 Franklin Wharf
Hobart TAS 7001
Phone: 03 6165 3233, 1300 720 647
Email: fishing.enquiries@dpipwe.tas.gov.au

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