Journal
JOURNAL OF FISH BIOLOGY
Volume 101, Issue 5, Pages 1217-1224Publisher
WILEY
DOI: 10.1111/jfb.15193
Keywords
conservation; demersal gillnets; discarding; teleost
Categories
Funding
- Department of Primary Industries and Regional Development, Government of Western Australia
Ask authors/readers for more resources
This study quantified the discarded catch time series of teleosts in Western Australia's shark fisheries and identified the most commonly discarded species. The annual discards reached a peak in the 1990s but are currently much lower than the overall retained catches. These findings provide important inputs for assessing the ecosystem-based approach used in managing WA's shark fisheries.
Quantifying discards is essential for assessing the impact of fisheries on non-target species and the ecosystems in which these fisheries operate. In Western Australia (WA), fishers are required only to report catches of retained species. For the currently operating shark fisheries of WA, the authors quantified catch time series of discarded teleosts using data from at-sea observers collected since 1993. Sixty-two teleost species were observed in the catch of which 20 were routinely discarded. The most commonly discarded teleosts were western buffalo bream/silver drummer, Kyphosus cornelii/K. sydneyanus, and dusky morwong, Dactylophora nigricans. Annual discards peaked in the 1990s; nonetheless, current discard levels, 36.9 +/- 2.1 (S.E.) t year(-1), are much lower than the overall annual retained catches (c. 1000 t year(-1)). The catch time series reconstructed in this study are important inputs for assessing the ecosystem-based approach used for managing WA's shark fisheries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available