My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
9470
CWCB
>
UCREFRP
>
Public
>
9470
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2009 5:02:35 PM
Creation date
5/20/2009 1:38:26 PM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
9470
Author
Shiozawa, D. K., M. D. McKell, B. A. Miller and R. P. Evans.
Title
Genetic Assessment of four native fishes from the Colorado River drainages in western Colorado
USFW Year
2003.
USFW - Doc Type
the results of DNA analysis.
Copyright Material
NO
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
77
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
<br />riffles and a few larger fish in the single pool in the sampling reach. We initially used seines to <br />collect fish, but due to low catch efficiency, switched to the backpack electroshocker which <br />made sampling much easier and more efficient. The small fish were identified as juvenile <br />suckers (appeared to be bluehead and flannel mouth), speckled dace, and roundtail chub, with <br />numerous non-native shiners as well. The pool contained several large carp and catfish. We <br />sampled for approximately three hours and collected 35 speckled dace (SPD), eight flannelmouth <br />(FMS), 16 bluehead (BHS), and one roundtail (RTC). Fish were placed in 70% ethanol (ETOH) <br />until they could be processed in the laboratory. <br /> <br />On August 2, we traveled along the Yampa River to search for suitable collecting sites and <br />stopped near Juniper Hot Springs to sample. We shocked for approximately one hour and <br />collected numerous juvenile smallmouth bass, but observed no other fish species. <br /> <br />We continued along the Yampa toward Craig, CO, searching for good access to the river (most <br />of the land ownership along the river is private, with occasional small sections ofBLM). We <br />stopped and spoke with a tenant on private land at Coal View above the town of Hayden. He <br />contacted the landowner to get permission for us to sample the river on the private land. The <br />water was swift and the section included one backwater (approximately 20 feet x 8 feet and at <br />least 5 feet deep) and long runs with a few riffle sections. Two hours of shocking yielded 13 <br />SPD and 26 mottled sculpin, mostly from among the riffles and shallow runs. The backwater <br />held one large pike which only splashed at the surface when apparently startled by the <br />electroshocker (insufficient current and/or voltage to disable the fish). We observed no suckers <br />or chub at this site. <br /> <br />On this same day we stopped where Highway 13 crosses the Yampa River and shocked riffles, <br />runs, and pools for approximately one hour without collecting any fish. <br /> <br />On August 3, we collected fish from the White River at the city park in Meeker, CO. We used <br />both the seine and electroshocker to collect 30 SPD, 32 mottled sculpin, and six BHS suckers in <br />about 3 hours. There were also many non-native chub (probably creek chub), and a few juvenile <br />brown trout. <br /> <br />We continued along the White River looking for access to the river. We left the highway near <br />the confluence of Piceance Creek with the White River. A few miles up this road we found <br />access to this small stream through BLM land (TIN, R97W, Section 14) where we shocked for <br />approximately one half hour and collected 32 SPD. There were no other fish species observed. <br /> <br />Further down the highway we stopped at a ranch house and asked permission of the owner to <br />gain access to the river through his land. He directed us to County Road 77. The river was <br />approximately 50 meters wide with very little habitat other than deep, swift runs. We made two <br />passes using the backpack electro shocker on a section approximately 150 meters long <br />downstream of the County Road 77 bridge. The water was extremely turbid in this area, making <br />sampling difficult, but we collected 29 SPD and observed numerous non-native chub and <br />shiners. Total time spent shocking was about 2 hours. <br /> <br />7 <br />
The URL can be used to link to this page
Your browser does not support the video tag.