9531

• UCREFRP Catalog Number: 9531
• Author: Hudson, J. M. and J. A. Jackson.
• Title: Populaiton Estimates for Humpback Chub ‎(Gila cypha)‎ and Roundtail Chub ‎(gila robusta)‎ in Westwater Canyon, Colorado River, Utah, 1998-2000.
• USFW Year: 2003.
• USFW - Doc Type: Salt Lake City.
• Copyright Material: NO

Humpback Chub ISMP Length-Frequency
1988
zo ~ _ _ _
_
.,
4 M
~ ~
• ~
10 I.._'.. _.. ... _..... .. ..... ...._ _. _
_. _...
4 -~.~:~:
T., _-
~ _.~
M1 P ~ M N N p O M N a 4 6 N
r
0 ~.. _.--~ ~
N N N N N M M M M M 4
A
•'
4
Leagth (mm )

Humpback Chub ISMP Length-Frequency
1989
zoo _. _ _ _,

k
e __ ..
~
r 5
I - _. - __ __._.
.
: .
.
.
.
.
N
M1
a
4 M
M 4
If. M1 A a M N M1
N
~ r r N N N N N M M M M M 4 Q Q
Length (mm )

Humpback Chub ISMP Length-Frequency
1990

.,
R zo ~------ - - - - ---- - - --- ---

15 ~ -_ ___.._. _ - --. ;_
y M

i
w
=. - _ _
I
0 4 -~ ~,l,i .L,_r. ~_..
N N o a a o 0 o e a o 0
r
N
r r
N
N N N M M M M M 4 Q 4
Leagth (mm)

Humpback Chub ISMP Length-Frequency
1991
zo
h
~
15 - -.-...,..- ....___ _.-_.. _....._,.. _._.__.. _. _ __ _... _ _..__._.,.... _...
Y ~
~ ~
~ ~
to - - - -~ - - _. - - _
li ..
0.~ - lt~l•~ 1,
O O ~
P a ~ O C a a ~
r
^ r
N
N M N N M M M M 4 4
Length (mm )
Humpback Chub ISMP Length-Frequency
1992

~
Y zo _ _ _ _
i
Y ~

•
• e
~ 5
' _..' __
'
a
o °rv a a a ~ F °c ° n o o ~
r r r N N N N N M M M M 9 4 4
Length (mm)

Humpback Chub ISMP Length-Frequency
1993

V zo ~ _
15 ~ _ _. .. .. _ _ __ _.. _.,_
k
4
e
I
5 ' _.
0 `--
IM1 F P M N N T a N P M N
r r r N N N N N M M M M M R 4 Q
Leagth IID ID )

Humpback Chub ISMP Length-Frequency
1994

.,
74
V zo-.-- ---- ----- --- ------------ -----

15 _: ..' _. _.._ _:._ ._... _.. _.___._ __~__
4 V
e N
e 10 r-... __ __:.._ _ . _..._. _ -_.
•

N P a M N F P a a N a P M
r r r N N N N N M M M M M R Q R
Leagth (mm)

Humpback Chub ISMP Length-Frequency
1995
zo _ _ _. __._ __ _ _ _ .
!~ ~
'
w p
4
~ t
• e '~ -
.
10 - _... _.. _._.. _-- _._... __. __... _ .. _.
~
4 5 ~. _..._ _ _... . ......_.. :..__ ....'
o a a a o a e a a a
r r t N N N N M M M M M M Q Q Q
Length (mm 1
Figure 6. Westwater Canyon humpback chub ISMP length-frequency histograms for 1988-2000.
~ Frequency is illustrated as percentage of total individuals (n) within a given size class.

22