9499

• UCREFRP Catalog Number: 9499
• Author: Osmundson, D. B.
• Title: Removal of Non-native Centrarchids from Upper Colorado River Backwaters, 1999-2001
• USFW Year: 2003.
• USFW - Doc Type: Summary of Results.
• Copyright Material: NO

50
40
30
20
10
0
50
40
30
20
10
0
50
40
0 30
0 20
> 10
U 0
C: 50
40
?- 30
20
L
LL 10
0
50
40
30
20
10
0
50
40
30
20
10
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----- ------- - --------.----- --------------- ------- --------- ...- -- -
Green sunfish -- -------------------.- --
®1999-spring -----
30.43
-------- 24:18 - - -
- ---------
n = 1104
-----
------------------------------------------------
12.95 ------------------------- ------------- -------------------- --- -
--6.8a.-6,88 5.34-..--------------------
2.99 3.44 2.81 2
08 ----------------------- - --- --- --------------------------- ----
. 0.91 0.27 0.45 0.18 0.18 0 0 0

101999-Fall
--- ---......----- ---------------------------------- -----------------.- ...-- -----.----------... .----- -------------- .............
n = 1224 ...
45:77-..... ---- ----- ----?--- - - -?-- -?-
r3:97 13
64 -- - ---- - ----------- -- ?-
.
12.66
r 21 - 6.86.
0.33 m MEMO 3.92 3.19 2.12 1.31 1.31 0.98 0.16 0.08 0.08 0
-- ........... .. --
®2000-spring -----
31.01
--------------- .......... -----....------. --------------------------- ------.....-------------- -----------
n = 1561
i781
---------------- --------- --------- ---------------------
12.81
9.42 10.12
1.67 2.75 1.99 0.83 0.77 0.32 0.13 0.13 0.06 0.13 0
----------------------------------------------------------------------------- ------------------------ -----
®2000-fa I I
------------------ -------------- ------------------------ --- ------------- ---------------.-------- ----------------------- -------
n = 1879
-------------- -----------.------------------15.27--16.39--------------- ------------------------- -------- ------------------------ -----
11.5 11.81
10.22 10.06
7
82
6
55
N
.
-
EIM
:
--
-- ---- -- ------
o ..4:58------- ----------
1
6 1
44 -- - ------- ---- ------ ------
W
Im
0.53 1.33 .
. 0.48 0.37 0.05 0 0
02001-spring
----------------------------------------------------------- ----------------- ---------------------- -- _------------ --- -
n = 1494

------------------------------------------

------------------------------- - - - - - - -- --- - - - - - - -
3.12 95:6 F6 4--12.85 -------
13

--------------------:---

--------- ------ -----------------

-----
- 6 8.1--- 8.7---6 .63 ------------------
4:35 ------
1-47
0.07 2.118 1.41
0.87 0.4 p 0.13 0
.07
-------------------- -------------------------------------------------------------------------------------.. .-------
----- ®2001-Fa I I
---------------------------- --------------------------------------------------------
n = 1608
------------------------------ -------- 1--3 .8-1 -45:42-- 1 - 1 -- 88 -
-- ----- ------------------------------------------- --------------------
----------- .62 .
--.....---- 7.4--.7-09- 9.76 TA-4.91 --- --- ------- -- ----- --------------------- -----2-11 0.19 ?MI®E®?®M e® 0.62 0.31 0.12 0 0
20-29 40-49 60-69 80-89 100-109 120-129 140-149 160-169 180-189
30-39 50-59 70-79 90-99 110-119 130-139 150-159 170-179 190-199
Length class (mm)
Figure 5. Length-frequency (total length) of all green sunfish captured (barge and boat
electrofishing) during each of six consecutive capture periods, 1999-2001.
13