Project number:
1996-116
Project Status:
Completed
Budget expenditure:
$197,820.00
Principal Investigator:
Francisco Neira
Organisation:
Agriculture Victoria
Project start/end date:
29 Dec 1996
-
30 May 2000
Contact:
FRDC
1. To collect ichthyoplankton and physical, chemical and oceanographic data in Bass Strait during the winter of 1997 and the summer of 1997/98.
2. To describe the composition, abundance and spatial distribution of fish eggs and larvae, with particular reference to the early stages of commercially-important inshore fish species and those of the south-east trawl fishery.
3. To determine the areas and season of the spawning of King George whiting (Sillaginodes punctata) off the Victorian coast.
4. To determine the abundance of the different developmental stages of King George whiting at different locations and identify the possible occurrence of larval transport by back calculating the age of larvae.
5. To determine the areas and season of spawning of pilchards (Sardinops sagax) off the Victorian coast and to describe the horizontal and vertical distribution of eggs and larvae.
6. To identify regions of changing nutrient and chlorophyll concentration, and their relationship to physical properties (S,T) and ichthyoplankton abundance.
7. To collect physical oceanographic data and satellite images to extend the 3-D Bass Strait hydrodynamic model of coastal currents.
8. To describe the spatial and seasonal distribution of rock lobster phyllosomes and giant crab megalopa.
Final report
ISBN:
0-7311-4611-5
Authors:
Dr Francisco J. Neira
Dr Gregory P. Jenkins
Mr Andrew Longmore
Dr Kerry P. Black
Final Report
•
2011-07-11
•
7.90 MB
1996-116-DLD.pdf
Information on spawning and larval recruitment processes of commercially important species in coastal waters in south-eastern Australian waters is provided based on four daytime surveys carried out on board the RV Franklin during the summer of 1997 (January-February and December) and the winter of 1998 (May-June and July). The principal objective of the project was to locate main spawning areas of commercial fish species, and to combine fish eggs and larval concentrations with hydrographic ( currents, density) and hydrochemical (inorganic nutrients, fluorescence, chlorophyll a) data in an attempt to identify possible retention areas and advection pathways of larvae. All specific objectives of the project were accomplished to varying degrees of success, except those stated above in 7 since no specimens were obtained.
