Annual total mortality and population structure of jackass morwong (nemadactylus macvoptevus bloch & schneider) in eastern Australian waters

David C. Smith

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Catch curves were analysed to estimate the annual total mortality of jackass morwong landed at the port of Eden between July 1976 and June 1979. The annual total mortality of females was lower in 1978-1979 than in the previous 2 years, reflecting the expansion of the trawl fishery in New South Wales to include previouslq unexploited deepwater grounds. Males were fully recruited to the commercially exploited population at an earlier age than females. It is suggested that the increased mortality in older males is due to an increase in natural mortality.

Original languageEnglish
Pages (from-to)253-260
Number of pages8
JournalMarine and Freshwater Research
Volume34
Issue number2
DOIs
StatePublished - 1983
Externally publishedYes

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