SLIDE 1
Striped Bass – Restoring a Striped Bass – Restoring a Coastal Mississippi Fishery Coastal Mississippi Fishery
SLIDE 2 Population Declines Population Declines
- Historical Distribution of northern gulf
Historical Distribution of northern gulf population severely declined in late 1940s population severely declined in late 1940s and 1950s and 1950s
▪ Extensive habitat alterations
Extensive habitat alterations
▪ Increased runoff
Increased runoff
▪ Chemical contaminants
Chemical contaminants
▪ Overfishing
Overfishing
▪ Global warming
Global warming
- Apalachicola-Chattahoochee-Flint river
Apalachicola-Chattahoochee-Flint river drainage, FL declared only extant native drainage, FL declared only extant native striped bass population in 1970 striped bass population in 1970
SLIDE 3 Stock Enhancement Stock Enhancement
Project Goal : Project Goal : Restore Population Restore Population to Self-Sustainable to Self-Sustainable Level Level Project Accomplishments: Project Accomplishments: Stocked over 13 million (2” and 6” ) Stocked over 13 million (2” and 6” ) fingerlings fingerlings
SLIDE 4
Play Video Play Video
SLIDE 5
Anadromous Building Anadromous Building
After Katrina After Katrina Before Katrina Before Katrina
SLIDE 6
Striped Bass Rearing Sheds Striped Bass Rearing Sheds
After Katrina After Katrina Before Katrina Before Katrina
SLIDE 7
DMR’s Lyman Hatchery DMR’s Lyman Hatchery
SLIDE 8
Half Acre Lined Ponds Half Acre Lined Ponds
SLIDE 9
125k Four Day Old Fry 125k Four Day Old Fry
SLIDE 10
Acclimation of Fry to Rearing Acclimation of Fry to Rearing Ponds Ponds
SLIDE 11
Acclimation of STB Fry Acclimation of STB Fry
SLIDE 12
30 Day Old Phase I Fingerlings 30 Day Old Phase I Fingerlings
SLIDE 13
120 Day Old Phase II 120 Day Old Phase II Fingerlings Fingerlings
SLIDE 14
Tagging Phase II Striped Bass Tagging Phase II Striped Bass
SLIDE 15
T-Bar Tag
Tagging Cost: $11,000
Tagging Phase II Fingerlings Tagging Phase II Fingerlings
SLIDE 16
Implanting Acoustic Tag Implanting Acoustic Tag
SLIDE 17 Tagging Methods Tagging Methods
10 phase II striped bass were selected 10 phase II striped bass were selected from the Lyman Fish Hatchery, MS from the Lyman Fish Hatchery, MS Anesthetized in a water bath containing Anesthetized in a water bath containing MS-222 MS-222 Surgically implanted with Vemco V-13 Surgically implanted with Vemco V-13 transmitter into ventral body cavity; transmitter into ventral body cavity; closed with several simple interrupted closed with several simple interrupted sutures of absorbable monofilament sutures of absorbable monofilament suture material suture material Placed in holding tank for 3 day recovery Placed in holding tank for 3 day recovery period before release period before release
Acoustic Transmitter
SLIDE 18 Acoustic Tagging Acoustic Tagging
10 phase II striped bass were selected 10 phase II striped bass were selected from the Lyman Fish Hatchery, MS from the Lyman Fish Hatchery, MS Anesthetized in a water bath containing Anesthetized in a water bath containing MS-222 MS-222 Surgically implanted with Vemco V-13 Surgically implanted with Vemco V-13 transmitter into ventral body cavity; transmitter into ventral body cavity; closed with several simple interrupted closed with several simple interrupted sutures of absorbable monofilament sutures of absorbable monofilament suture material suture material Placed in holding tank for 3 day recovery Placed in holding tank for 3 day recovery period before release period before release
Acoustic Transmitter
SLIDE 19
Passive Receiver Array Passive Receiver Array
10 receivers independently 10 receivers independently moored within the moored within the lower river lower river
– 6 Sonotronics Inc. SUR 6 Sonotronics Inc. SUR – 4 Vemco Ltd. VR2 4 Vemco Ltd. VR2
Receivers located
above and below release site
SLIDE 20
- Ft. Bayou Release Site
- Ft. Bayou Release Site
SLIDE 21
Poster Poster
SLIDE 22
Eight Year Old 20 lb Striper Eight Year Old 20 lb Striper
SLIDE 23
Mounted Striper Mounted Striper
SLIDE 24
The End The End
