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Last modified
7/14/2009 5:02:32 PM
Creation date
5/22/2009 5:48:04 PM
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UCREFRP
UCREFRP Catalog Number
7999
Author
Colorado River Wildlife Council.
Title
Minutes, Colorado River Fish & Wildlife Council.
USFW Year
1996.
USFW - Doc Type
April 23-24, 1996.
Copyright Material
NO
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1 <br />1 <br /> <br />[7 <br />1 <br />1 <br />1 <br /> <br /> <br /> <br />t <br /> <br /> <br />1 <br /> <br /> <br /> <br />believe that those introductions have contributed to the <br />population in Lake Mojave. In Lake Havasu, only about 120 <br />bonytails have been stocked, but they were in the range of <br />10 inches. They were tagged. Returns to 1996 seem to show <br />there has been some recruitment. <br />The lower basin has entered into a program based on a <br />commitment through Section 7, ESA to begin stocking 25,000 <br />bonytails a year between 10 and 12 inches. The program was <br />to start in 1996, but severe over-wintering problems at <br />Dexter NFH eliminated the planned introduction. The FWS <br />continues to believe firmly that they can and will make the <br />objective. Mr. Radant (UT) indicated that work in the upper <br />basin seems to show cultured individuals are not able to <br />handle the river environment and Utah will be working with <br />FWS trying to revise culture methods so the fish will be <br />adapted to currents and river food organisms before they are <br />introduced. Mr. Divine pointed out in the more successful <br />Lake Mojave plants, all fish were less than 5 inches. <br />Transportation and handling losses of 10 to 12 inch fish are <br />common in their experience, which indicates that the fish <br />get very much more difficult to handle and transport they <br />grow larger and older. <br />Experience in the lower basin with razorback suckers is <br />encouraging. Approximately 4,000 small suckers were <br />introduced into Lake Mojave. These young adults are now <br />mingling with the older native fish on the spawning grounds <br />in large numbers each year, considering the smallness of the <br />number of individuals introduced. In efforts to collect <br />wild razorback fry, the FWS this year has collected <br />approximately 64,000 fish to date, which is double that <br />collected last year and four to six times that collected two <br />years ago. Of the previous collections, about 6,000 <br />fingerling fish have been placed into ephemeral and cutoff <br />bays and ponds. From collections this year, which are still <br />ongoing, the service hopes to release several thousand three <br />to four-inch razorback into ephemeral ponds, and several <br />thousand raised over winter released in 1997 into the Mojave <br />system at considerably larger size. <br />Mr. Hamill reported that FWS has developed a razorback <br />recovery plan and has taken the initiative to integrate it <br />across the system and also has taken the initiative to draft <br />an ecosystem plan for razorbacks to integrate the different <br />basins which included four separate recovery plans for the <br />species. Each of these two documents are presently being <br />reviewed internally. The review is due to be concluded by <br />the first of June when the plans will be given to the <br />recovery teams to review by at least the end of July. After <br />this, the plans will be sent for public and agency review in <br />accordance with normal processes. Mr. Hamill believes, in <br />11 <br />
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