THE ANTISMOLT WHEN BAD THINGS HAPPEN TO GOOD FISHES - PowerPoint PPT Presentation
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THE ANTISMOLT WHEN BAD THINGS HAPPEN TO GOOD FISHES
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A JUVENILE FISH OF SMOLT AGE THAT FAILS TO OUTMIGRATE WITH THE REST OF ITS COHORT ... THE ANTI-SMOLT: WRETCHED, UNCOOPERATIVE HALFWITS. GLASS HALF FULL ... – PowerPoint PPT presentation
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Title: THE ANTISMOLT WHEN BAD THINGS HAPPEN TO GOOD FISHES
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THE ANTISMOLT- WHEN BAD THINGS HAPPEN TO GOOD
FISHES
- CAMERON SHARPE
- BRIAN BECKMAN
- PATRICK HULETT
- CHRIS WAGEMANN
- CHRIS GLEIZES
- HOWARD FUSS
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1 JUVENILE
PROTRACTED FW RESIDENCY
ANADROMY
2 JUVENILE
NON- ANADROMY
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RESIDUALS
- A JUVENILE FISH OF SMOLT AGE THAT FAILS TO
OUTMIGRATE WITH THE REST OF ITS COHORT
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SMOLT
LG RESIDUAL
SM RESIDUAL
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PERCEIVED RISKS
- ECOLOGICAL COMPETITION, PREDATION
- GENETIC DOMESTICATION SELECTION, HW CROSSES,
HYBRIDIZATION
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CASE STUDIES
- SNOW CREEK
- KALAMA
- OTHERS
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SNOW CREEK
- TIPPING ET AL. (1995). PFC. 57120-123
- 3 RELEASES 91, 92 93 4.7 KM ABOVE WEIR
- 20 MISSING, PRESUMED DEAD
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KALAMA
- GOBAR CREEK
- MAJOR KALAMA SPAWNING TRIBUTARY
- ACCLIMATION SITE FOR STEELHEAD RELEASES
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KALAMA WATERSHED
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GOBAR CREEK
UPPER REACH BY98 88 N1637 BY99 71 N2071 BY00
79 N656
LOWER REACH BY98 12 N229 BY99 29 N850 BY00
21 N175
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MIGRANTS RESIDUALS (BY 00 BY 99)
MIGRANTS
FREQUENCY
RESIDUALS
FORK LENGTH (mm)
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OTHER WORK
- KEOGH. WARD AND SLANEY (1990). 40 LOSS.
- YAKIMA (TEANAWAY). McMICHAEL (1992) 36 LOSS.
- NEED EXAMPLES TO THE CONTRARY.
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MECHANISMS
- SIZE/GROWTH
- SEXUAL MATURATION
- (NOT INDEPENDENT)
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SEX RATIOS OF RESIDUALS
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SIZE AND SEXUAL MATURATION OF MALE RESIDUALS
a
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IMMATURE MALES
MATURING MALES
PRECOCIOUS MALES
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FL (mm)
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(No Transcript)
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(No Transcript)
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BROOD AS 0
SMOLT COHORT (MULT. BROODS)
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SMOLTS
RESIDUALS
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PERSPECTIVES
- GLASS HALF EMPTY
- THE ANTI-SMOLT WRETCHED, UNCOOPERATIVE HALFWITS
- GLASS HALF FULL
- THE WILD CHILD NATURAL EXPRESSION OF PHENOTYPIC
PLASTICITY OF THE SPECIES
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ACKNOWLEDGEMENTS
- KALAMA HATCHERY STAFF
- NMFS/MITCHELL ACT
- HSRG/IAC
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