Spawning biomass of jack mackerel (Trachurus declivis) off eastern Australia: Critical knowledge for managing a controversial fishery
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- 作者：Tim M. Warda ; Tim.Ward@sa.gov.au" class="auth_mail" title="E-mail the corresponding author ; Owen W. Burnella ; Alex Iveya ; Stuart C. Sextona ; b ; Jonathan Carrolla ; John Keanec ; Jeremy M. Lylec
- 关键词：Jack mackerel ; Trachurus declivis ; Daily Egg Production Method ; Spawning biomass ; Small Pelagic Fishery ; Eastern Australia ; Tasmania ; Factory trawler
- 刊名：Fisheries Research
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：179
- 期：Complete
- 页码：10-22
- 全文大小：2780 K
文摘
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First dedicated application of the Daily Egg Production Method (DEPM) to jack mackerel (Trachurus declivis).
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Large numbers of eggs and adults collected from key spawning area off eastern Australia during what has been identified as the main spawning period.
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Adult sampling method appears to provide unbiased estimates of spawning fraction and may be applicable to other species.
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Spawning biomass of jack mackerel off eastern Australia during January 2014 estimated to be approximately 157,805 t (95% CI = 59,570–358,731).
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Sensitivity analyses indicate this estimate is robust to likely uncertainty in estimates of key parameters.