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Biology of Peron's threadfin bream Nemipterus peronii (Valenciennes) from the North West Shelf of Australia

journal contribution
posted on 2023-05-17, 08:24 authored by Sainsbury, K, Whitelaw, AW
Samples of N. peronii collected at depths of less than about 100 m showed a slight positive correlation between fish size and depth, but no correlation between abundance and depth and no die1 change in catch rate. Feeding occurred during the day, with crustaceans (Brachyura, Natantia, Mysidacea and Stomatopoda in particular) occurring in 70% of feeding individuals and fish occurring in 17%. Individuals containing ripe eggs were found throughout the year, although the proportion of ripe fish was highest in November and December. Sexual maturity in 50% of females was attained at a fork length of about 15 cm and at an age of 1 year. Zonation on the otoliths was shown to be annual and estimates of the parameters of the von Bertalanfy growth curve were L = 41.9 cm, K = 0.25, t0 = 0.74 years over the age range 0.5-5 years. The growth parameters for sexually differentiated animals differed significantly, but the age-length trajectory of each was very similar over the observed age range. The instantaneous rate of total annual mortality was 1.85 and did not differ between sexes.

History

Publication title

Australian Journal of Marine and Freshwater Research

Volume

35

Issue

1984

Pagination

167-185

ISSN

0067-1940

Department/School

Institute for Marine and Antarctic Studies

Publisher

CSIRO publishing

Place of publication

Victoria Australia

Rights statement

Copyright © 1984 CSIRO

Repository Status

  • Restricted

Socio-economic Objectives

Wild caught fin fish (excl. tuna)

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