Reproductive cycle and gonadal development of Macquarie perch, Macquaria australasica Cuvier (Percichthyidae), in Lake Dartmouth and tributaries of the Murray - Darling Basin, Victoria, Australia
-
Published:1998
Issue:2
Volume:49
Page:163
-
ISSN:1323-1650
-
Container-title:Marine and Freshwater Research
-
language:en
-
Short-container-title:Mar. Freshwater Res.
Author:
Appleford P.,Anderson T. A.,Gooley G. J.
Abstract
The gonadal development, reproductive cycle and growth of Macquarie perch,
Macquaria australasica Cuvier, in Lake Dartmouth and
selected tributaries of the Murray–Darling River Basin in south-eastern
Australia were evaluated. Gonadosomatic index (GSI) and histological analysis
were used to determine gonadal development and age and size at first maturity
in the resident Lake Dartmouth population. GSI analysis was also used to
determine age and size of Macquarie perch at first maturity in the inflowing
Mitta Mitta River and other riverine populations within the Goulburn River
catchment. Males appeared slightly smaller at first spawning than females at
all sites; both sexes were fully mature at four years of age. Differences in
size at first maturity were found between the lake and river populations; both
males and females of river populations tended to mature at a much smaller size
than the fish resident in the lake. Spawning occurred around November. Ovarian
and testicular development in this species follows a pattern similar to that
of other native Australian percichthyids. The implications for management of
recreational fisheries based on minimum size regulations is discussed in
relation to site-specific differences in growth rates and size of first
maturity of fish.
Publisher
CSIRO Publishing
Subject
Ecology,Aquatic Science,Ecology, Evolution, Behavior and Systematics,Oceanography
Cited by
26 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献