7058

• UCREFRP Catalog Number: 7058
• Author: Binns, N. A.
• Title: Effects of Rotenone Treatment on the Fauna of the Green River, Wyoming.
• USFW Year: 1966.
• USFW - Doc Type: Oregon State University,
• Copyright Material: NO

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'~ r. ...~.'.•tu...L~:-t+5'~~4~ _.irn'wA;r4k_~`k7a..jv ~'~~~~v_.._2y:~ ,
y: .:.
~`n ~.
F.i~ -- --
aF
~ i.
;.~ ,:
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~~,. `#b~ Iower river, as were other species of minnows. Thy squawfis
-~ -~tychocheilus lucius Girard)` and the hurnpback~ sinker ~yrauchen
~,

exams (Abbott) were resent m limited numhess. :Theses ec
P - ies
_.._ .. ~ ., . P
have declined in recent years. _bec~,~~e, of po11~~,~4xs,,. especially during
tie war years. The black bullhead Ictalurus melas (Rafinesque)~
~~
and the channel catfish Ictalurus punctatus (Rafinesque)~ were re
-
corded by both Bosley (1960) and McDonald and Dotson (1960). No
squawfish, humpback suckers, or catfish were taken during the
fish. sampling in 1962. The lengths reported in Table 1 for squaw- :-

fi'sl; humpback suckers, and catfish are taken from Bosley's unpub- .~~
`~=~
.,
'shed data. The squawfish appears fo have been present only near
y,~
- the Dutch John town site. Trout were found only occasionally below ---~
~t~e=~aBarge area because of poor habitat and strong competition
from the coarse fish. ~~`~
_~

The fish population in the Green River below. Middle Firehole ,_~
-~
Creek (section IV) was strongly depressed by a trial treatment j
made in 1961 to test rotenone dispensing systems, During this
trial treatment, trout, humpback suckers, and channel catfish were ~
found to be very rare, and no squawfish were reported. The fol-
,lowing species, reported by previous investigators (Bosley, 1960;
and McDonald and Dotson, 1960), were not found during the 1962
,pretreatment gill netting. in the lower river;, yellow perch Perca
flave_ s~ens (Mitchill)~ , brook trout alveiinus fontinalis (Mitchill~
-.--~-