7858

• UCREFRP Catalog Number: 7858
• Author: U.S. Fish and Wildlife Service.
• Title: Draft Greenback Cutthroat Trout Recovery Plan.
• USFW Year: 1995.
• USFW - Doc Type: \
• Copyright Material: NO

Figure 3. Comparison of selected parameters for various Colorado subspecies '
of O. clarki and rainbow trout.

Comparison of Selected Parameters for
Various Colorado Subspecies of Salmo clarki and Rainbow Trout
(From Johnson 1976)

Number
Number Lateral line
scale count Scale count
from lateral
'
Number pyloric Number basibranchial (2 rows above line to
vertebrae ceaca gill-rakers teeth lateral line) dorsal fin Spots
mean
(range) mean
(range} mean
(range) mean
(range) mean
(range) mean
(range) '
(S. clarki stomias
' 60.6
(59-62) 29.4
(24-42) 20.5
(17-22) usually
present 195.0
(175-214} 48.0
(46-53) Large,
absent
'
Cutthroat Trout) (0-15) from head
S. clarki virginalis
Rio Grande
h
' 61.7
(60-63) 46,0
(33-59) 19.5
(18-21) 7.3
(4-12) 164.0
(146-186
) 41.9

(39-47) Medium size

concentrated
utt
roat Trout)
posteriorly
S. c/arki p/euriticus
(Colorado Cutthroat
T
' 61.2
(60-63) 35.0
(23-46) _ 19.0
(16-21) usually
present 180.0
(159-202) 43.0
(31-51) Large spots
concentrated
rout) (0-15) posteriorly ,
S. c/arki macdona/di
(Yellowfin Cutthroat
t
' 60.6
(60-61) 42.0
(32-49) 21.3
(20-22) 15.5
(15-16) 161.7
(149-172) 41.3
(38-46) Spots small
irregular
rout) shape '
S. clarki lewisi
(Yellowstone 61.6
(60-63) 41.2
(31-51) 20.6
(18-23) 24.0
(9-46) 179.2
(161-187) 40.6
(37-46)
Cutthroat Trout)

S. gairdneri
(Rainbow Trout)
63.0
(62-65)
55.0
(40-70)
19.0
(18-21)
absent
130.0
(120=140)
27.0
(24-30)
Small,
equally '
distributed ~
'Counts from populations thought to be pure strains and typical of the subspecies

1
1
s ~