Title:

Effects of Trawling subprogram: reducing the impact of Queensland's trawl fisheries on protected sea snakes

Project Number:

2005-053

Organisation:

Department of Agriculture and Fisheries (QLD)

Principal Investigator:

Tony J. Courtney

Project Status:

Completed

FRDC Expenditure:

$394,798.54

Program(s):

Environment

Final Report - 2005/053 - Reducing the impact of Queensland's trawl fisheries on protected sea snakes

Final Report
ISBN:978-0-7345-0418-0
ISSN:N/A
Author(s):Tony Courtney
Date Published:July 2010

Principal Investigator: A. Courtney, B. Schemel, R. Wallace, M. Campbell, D. Mayer and B Young

Key Words: sea snakes, Acalyptophis peronii, Aipysurus duboisii, Aipysurus eydouxii, Aipysurus laevis, Astrotia stokesii, Disteira kingii, Disteira major, Enhydrina schistosa, Hydrophis elegans, Hydrophis mcdowelli, Hydrophis ornatus, Lapemis curtus, trawl bycatch, prawns, redspot king prawn Melicertus longistylus, Lapemis curtus, trawl bycatch, prawns, redspot king prawn Melicertus longistylus, eastern king prawn, Melicertus plebejus, tiger prawns, Penaeus esculentus, Metapenaeus ensis, Metapenaeus endeavouri, saucer scallops, Amusium balloti, BRD, square mesh codends, fisheye BRD

Objectives

1. Collate and review existing data and literature on sea snake distribution and abundance on the Queensland east coast. This will enhance the detail and precision of the recently introduced CFISH logbook data program on Species of Conservation Interest.

2. Implement a crew-based data collection program to quantify information on sea snake catch rates, species composition and distribution. Where possible, consider areas that are closed and open to trawling (contingent upon GBRMPA approval to sample closed areas).

3. Quantify post-trawling mortality rates of sea snakes by undertaking survival experiments at sea on commercial vessels.

4. Test effectiveness of BRDs, including square mesh panels, on sea snake catch rates and promote the uptake of effective devices by industry.