Full description
Black Jew fish in the Northern Territory and Banded Morwong and Bastard Trumpeter in Tasmania have been tagged with acoustic tags and tracked using VR2's (presence/absence data) and VRAP (triangulated positional data) (Tas fish only).Lineage
Maintenance and Update Frequency: notPlanned
Statement: Northern Territory
Compact subsurface VR2 ‘listening stations’ (Vemco, Canada) that use a multidirectional hydrophone to detect uniquely coded individual acoustic transmitters were used to monitor movements. Forty-seven VR2’s were deployed in November 2004 between 11° 16.86' S 130° 19.08' E and 13° 24.48' S 129° 54.48' E (Figure 1a) to cover the commercially fished aggregation sites at Channel Point (13° 09' S 130° 04.80' E, Fig. 1b) and Caution Point (11° 24' S 130° 09' E, Fig 1c), and smaller aggregation sites targeted by recreational fishers in between Channel Point and Caution Point. On 14 March 2005 a Category 5 tropical cyclone (Ingrid) crossed the coast directly over Caution Point, resulting in the loss of most of the northern part of the array around Caution Point. Some receivers in the Channel Point region of the array were also lost due to the flood surge following the cyclone and were re-established with some new sites in April 2005, leaving 29 receivers in the array in total. To replace Caution Point, a new array of five receivers was established in September 2005 in Chambers Bay (12° 11.4' S 131° 49.8' E) (Fig. 1a, c), an aggregation site targeted by commercial fishers. This took the total number of receivers for the entire array to 34.
For further information on the methods and tagging regimes please consult Chapter 1 of the attached report.
Tasmania
Compact subsurface VR2 ‘listening stations’ (Vemco, Canada) that use a multidirectional hydrophone to detect uniquely coded individual acoustic transmitters and record the date and time each transmitter is detected were used to monitor movements. Thirty-seven VR2’s were deployed between 43° 08.41’ S 148° 00.06’ E and 42° 58.22’ S 147° 59.29’ E to cover an ~ 20 km stretch of coastline on the Tasman Peninsula, Tasmania, Australia, where both C. spectabilis and L. forsteri are commercially fished (Fig. 1a). Thirty-two receivers were deployed in July 2006, with the remaining five deployed in January 2007 (Table 1). Receivers were placed such that long-shore movements (Receivers S1-S17, Figs. 1a-d; Table 1), movements from shallow to deep reef (Receivers D1-D11, Figs. 1a-d; Table 1) and movement offshore could all be detected (Receivers O1-O17, Figs. 1a-c; Table 1). Inshore receivers (S and D receivers) were placed to maximise coverage along the coast, and as such many did not have overlapping detection ranges, as determined by range tests (see details below, Table 2). However, the offshore receivers (O receivers) were spaced approximately 1km apart, such as they had closely spaced detection ranges (Table 2, Fig. 2).
For further details on methods and tagging, please consult Chapter 2 of the attached report.
Notes
CreditFisheries Research and Development Corportation (FRDC): 2004/002
Credit
Northern Territory Fisheries
Northern Territory Fisheries
Purpose
Understanding movement patterns of key reef species so their stocks can be appropriately managed
Understanding movement patterns of key reef species so their stocks can be appropriately managed
Modified: 23 09 2008
Data time period: 07 2004 to 30 11 2007
text: westlimit=130.00; southlimit=-11.50; eastlimit=130.50; northlimit=-11.00
text: westlimit=131.50; southlimit=-12.50; eastlimit=132.00; northlimit=-12.000000000000002
text: westlimit=130.00; southlimit=-13.50; eastlimit=130.50; northlimit=-13.00
text: westlimit=147.50; southlimit=-43.50; eastlimit=148.00; northlimit=-43.00
text: uplimit=80; downlimit=1
Subjects
Agricultural and Veterinary Sciences |
ANIMALS/VERTEBRATES |
BIOLOGICAL CLASSIFICATION |
Biological Sciences |
Banded morwong |
Bastard trumpeter |
Black jewfish |
Cheilodactylus spectabilis |
EARTH SCIENCE |
Ecology |
FISH |
FISHERIES |
Fisheries Sciences |
Fisheries Management |
Latridopsis forsteri |
Marine and Estuarine Ecology (Incl. Marine Ichthyology) |
Movement |
Position |
Protonibea diacanthus |
Residency |
Spatial management |
Spawning aggregations |
biota |
organism |
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Other Information
(REPORT - FRDC Final Report [direct download])
Identifiers
- global : 8dc06820-44a2-11dc-8cd0-00188b4c0af8
