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...

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...

Echo sounder, sonar and radar operators and navigation course

The 1982 Radar, Navigation, Echo Sounder and Sonar Course was held from April 27 to May 7. This year's course for professional fishermen was attended by 11 students. It was felt that the smaller number was easier to handle in the compact training areas. The first week of the course consisted of...