Information about growth and mortality are important in the management of resources because these provide us with an understanding about the productivity of the target population. Estimates are used to assess the impact of fishing upon the target population and the effectiveness of various scenarios...
In this project, we reviewed the scientific literature and collaborated with Australian abalone growers to develop a case definition for summer mortality. The case definition developed for summer mortality is as follows:
i. Chronic mortality of unknown cause (if in doubt take this to mean...
This research was undertaken on the Queensland saucer scallop (Ylistrum balloti) fishery in southeast
Queensland, which is an important component of the Queensland East Coast Otter Trawl Fishery
(QECOTF). The research was undertaken by a collaborative team from the Queensland Department...
ORGANISATION:
Department of Agriculture and Fisheries EcoScience Precinct
The objectives of this project were to develop length-based approaches for estimation of natural, fishing and total mortality, and to explore the application of these methods to the data from selected fisheries. The methods that were developed were essentially length-based versions of age-based...
Since the early 1990’s, a significant proportion of blacklip abalone (Haliotis rubra) along approximately 500 km of the NSW coastline between Port Stephens and Jervis Bay have died. Sporadic histological examination of moribund abalone since 1992 and a survey of infection prevalence in abalone...