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Acoustic Tagging. Jewfish Workshop 2006. TASMANIAN AQUACULTURE & FISHERIES INSTITUTE. Aim. To examine the movement patterns of aggregating black jewfish. Acoustic Arrays. TASMANIAN AQUACULTURE & FISHERIES INSTITUTE.
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Acoustic Tagging Jewfish Workshop 2006
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Aim To examine the movement patterns of aggregating black jewfish
Acoustic Arrays TASMANIAN AQUACULTURE & FISHERIES INSTITUTE VR2 Acoustic ‘listening stations’
Acoustic Arrays TASMANIAN AQUACULTURE & FISHERIES INSTITUTE VR2 Acoustic ‘listening stations’ Arrays established at 2 large aggregation sites: Channel Point and Chambers Bay
Acoustic Arrays TASMANIAN AQUACULTURE & FISHERIES INSTITUTE VR2 Acoustic ‘listening stations’ Arrays established at 2 large aggregation sites: Channel Point and Chambers Bay Arrays also established between Channel Point and Chambers Bay
Darwin Chambers Bay Channel Point
Acoustic Tagging TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish surgically implanted with acoustic tags
Acoustic Tagging TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish surgically implanted with acoustic tags
Acoustic Tagging TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish surgically implanted with acoustic tags 40 fish tagged at Channel Point between Dec 04 and Oct 2005 Size range 940-1220 mm TL
Acoustic Tagging TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish surgically implanted with acoustic tags 40 fish tagged at Channel Point between Dec 04 and Oct 2005 Size range 940-1220 mm TL 44 fish tagged at Chambers Bay between Sept and Nov 2005 Size range 980-1250 mm TL
Acoustic Tagging TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish surgically implanted with acoustic tags 40 fish tagged at Channel Point between Dec 04 and Oct 2005 Size range 940-1220 mm TL 44 fish tagged at Chambers Bay between Sept and Nov 2005 Size range 980-1250 mm TL All fish monitored until May 2006
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Results 33/40 Fish detected at Channel Point
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Results 33/40 Fish detected at Channel Point 22/44 Fish detected at Chambers Bay
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Results 33/40 Fish detected at Channel Point 22/44 Fish detected at Chambers Bay No fish detected at both aggregations
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Results 33/40 Fish detected at Channel Point 22/44 Fish detected at Chambers Bay No fish detected at both aggregations No fish detected at sites between aggregations
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Channel PointStations along 20 m depth contour Channel Point Aggregation
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 1st set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 1st set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 1st set of fish tagged at Channel Point Fish absent for seven months Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 1st set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 1st set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 1st set of fish tagged at Channel Point Fish absent for nine months Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 2nd set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 2nd set of fish tagged at Channel Point Fish absent for most part of 8 months (May to Dec) Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 3rd set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of 3rd set of fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of all fish tagged at Channel Point Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Fish Residency Presence of all fish tagged at Channel Point Spawning season Nov 04 Mar 05 Aug 05 Dec 05 May 06
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Diurnal Patterns Diurnal cycle
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Diurnal Patterns Diurnal cycle
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Diurnal Patterns Diurnal cycle
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Patterns Tide phase - All sites - January High Low High
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Patterns Tide phase - All sites - January High Low High
Site 3 Site 4 Site 5 TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Movement Early January tag detections
Site 3 Site 4 Site 5 TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Movement Early January tag detections
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Channel PointStations along 20 m depth contour Channel Point Aggregation
Site 3 Site 4 Site 5 TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Movement Early January tag detections
Site 3 Site 4 Site 5 TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Movement Site 5: Residence related to low tide
Site 3 Site 4 Site 5 TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Movement Increase in residence time as tides go neap
Site 3 Site 4 Site 5 TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Tidal Movement Site 4: Residence related to high tide
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Conclusions • Black Jewfish may not mix between aggregations
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Conclusions • Black Jewfish may not mix between aggregations • Fish absence at Channel Point may be linked to spawning
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Conclusions • Black Jewfish may not mix between aggregations • Fish absence at Channel Point may be linked to spawning • Movement within Channel Point aggregation is linked to time of day and tidal cycle
TASMANIAN AQUACULTURE & FISHERIES INSTITUTE Conclusions • Black Jewfish may not mix between aggregations • Fish absence at Channel Point may be linked to spawning • Movement within Channel Point aggregation is linked to time of day and tidal cycle • Modelling stills needs to occur to decipher information