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Last modified
7/14/2009 5:02:32 PM
Creation date
5/24/2009 7:31:55 AM
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UCREFRP
UCREFRP Catalog Number
8078
Author
Beard, J. M.
Title
Razorback Sucker Propagation 1987.
USFW Year
1989.
USFW - Doc Type
\
Copyright Material
NO
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through 4 November when the water level was lowered, <br />measurements of size and weight were made. During t' <br />the ponds, water temperatures varied between 11-240C <br />into either 10 or 20 mm size classes, and weighed in <br />individual weights and sizes were also recorded. <br />A total of 2,766 fish were removed from pond #1 <br />the fish were removed, and <br />he fishes confinement in <br />The fish were placed <br />lots of 17-242 fish. Some <br />(95.6% survivability). <br />These fish ranged in size from 49 mm to 180 mm TL (Figure 1), and samples <br />totaling 1,762 fish weighed a total of 23,374 grams (13.3 g/fish). Twenty-nine <br />of these fish were preserved for morphometric analysis, and the remaining <br />2,737 fish were placed in holding tanks. <br />A total of 263 fish were removed from pond #3 (73% survivability). These <br />fish ranged in size from 91 mm to 205 mm TL (Figure 2), and samples totaling <br />185 fish weighed 6,827 grams (36.9 g/fish). Four fish were preserved for <br />morphometric analysis, and the remaining 259 fish were placed in holding tanks. <br />Thus, a total of 2,996 pond #1 and #3 fish were held in separate holding <br />tanks. Figure 3 is a comparison of the differences in sizes between pond #1 <br />and pond #3 fish. The differences in sizes is presumably due to the original <br />stocking densities of the ponds. <br />A simple experiment was conceived to determine whether fish indoors in <br />fiberglass tanks, or fish held outdoors in an earthen pond would overwinter <br />better (grow, survive). An attempt was made to evenly distribute the fish <br />removed from ponds #1 and #3 into either the indoor tanks or pond #2. On 5 <br />November, alternating net fulls of fish were removed from the holding tanks by <br />hand held landing nets. The first net full of fish was designated as pond #2 <br />fish, and the next net full of fish was designated as tank fish. A total of <br />1,425 fish were transferred to pond #2, and the remaining 1,571 fish were <br />distributed between tanks #1 and #2.
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