4.4 Article

Quantifying teleost discards in the shark fisheries of Western Australia

期刊

JOURNAL OF FISH BIOLOGY
卷 101, 期 5, 页码 1217-1224

出版社

WILEY
DOI: 10.1111/jfb.15193

关键词

conservation; demersal gillnets; discarding; teleost

资金

  1. Department of Primary Industries and Regional Development, Government of Western Australia

向作者/读者索取更多资源

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.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据