|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SLEEPY HOLLOW STEELHEAD REARING
FACILITY |
|
|
Fish Rearing Summary: May 14, 2008 - January 2009 |
|
|
|
|
|
Holding Location |
# Fish Stocked (1) |
# Morts (Disease)(2) |
# Morts (Unaccount-ed for) (3) |
Total # Released |
% Survival |
Ave Condition Factor (K) |
# by Release Location (4) |
Notes |
|
|
Rearing Channel 11 Pools (smaller
YOY) |
43,106 |
8,156 |
21,472 |
13,478 |
31.0 |
1.17 |
2,946 -- Tank
3 10,532 -- River |
Smaller
YOY fish were placed into the RC pools, to fill, from downstream to upstream
as they were brought into the Facility.
Size at release varied greatly from ~ 3 - 8 inches FL. Most fish were in the 5 - 7 inch range (130
- 180 mm FL). |
|
|
Rearing
Channel 2
Pools (larger YOY) |
3,502 |
1,078 |
1,208 |
1,216 |
35.0 |
1.14 |
647 -- Tank 3 569 -- River |
Larger YOY fish
were graded out after quarantining and placed in one of two separate pools.
Size range at release was 3 - 9 inches (FL). |
|
|
Rearing
Channel 1
Pool (Lrg 1+ Juvs) |
27 |
0 |
0 |
27 |
100.0 |
1.13 |
27 -- Tank 3 0 -- River |
Fish were ~ 2
yrs old at release. Sizes ranged from approx. 8 - 11 inches (FL). |
|
|
|
Totals |
46,635 |
9,234 |
22,680 |
14,721 |
32% |
1.16 |
3,620 - Tank 3 (25%) 11,101 - River (75%) |
|
|
|
|
|
|
20% |
49% |
32% |
|
|
|
|
|
|
|
|
|
Notes: |
|
|
|
1. Fish were segregated
in separate RC pools by size/age at the start of the rearing season. |
|
|
|
2. Disease was primarily
bacterial infection (Flavobacterium columnare), but there were minor outbreaks of Ich. |
|
|
|
High concentration salt baths were used
throughout the season to treat for infections. |
|
|
|
3.
Unaccounted-for-fish [# fish stocked - (# of morts + # released)] were likely due to predation
by larger fish. |
|
|
|
4. Fish that were moved
from the RC to Tank 3 (held there until the river flow is up) were greater
than 150 mm (FL). T3 fish will be released into the |
|
|
|
lower river or the lagoon once it
reconnects with the river. Fish released into the Carmel River downstream of
Scarlett Well (RM 9.1) were <150 mm
FL. |
|
|
|
|
|
|
|
"Morts" refer to mortalities.
"FL"
refers to fork length - the length of the fish from snout to the fork in its
tail. |
|
|
|
"Condition
Factor" refers to a mathematical formula for
determining the physiological state of a fish, including its reproductive
capacity. It is calculated by |
|
|
|
dividing fish weight by length cubed (Wg/Lmm3). The heavier a fish for a given length, the higher its
condition factor (K). (x 10-5) |
|
|
|
|
|
u\staff/word/boardpacket/2009/20090129/InfoItems/25/item25_exh25a |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|