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Reclamation). The bands are parallel to the shore; depths depend <br />upon previous reservoir drawdown levels and degree of subsequent <br />submergence. Ripe razorback suckers were collected from Highline <br />Reservoir, Colorado, over a wave-washed shoal of gravel and shale <br />in water that was 0.6 to 1.3 m deep (pers. comm., P. J. Martinez, <br />Colorado Division of Wildlife). <br />Spawning behavior has been extensively documented in some <br />LCRB reservoirs (Douglas 1952, Medel-Ulmer 1980, Bozek et al. <br />1984). Generally, several males (2-8) accompany a single female <br />over the spawning area. The female apparently selects the precise <br />spawning location and settles near the bottom with a male on each <br />side. All fish convulse rapidly while in contact with each other, <br />and eggs and sperm are simultaneously released. Fertilized eggs <br />settle into spaces between substrate particles in the depression <br />caused by spawning activity. Number of eggs deposited in a single <br />spawning act is apparently a small portion of the total female <br />complement, because few eggs or larvae were observed in <br />depressions following spawning (Bozek et al. 1984, Mueller 1989). <br />Fractional spawning or deposition deep in the substrate may <br />partially explain the small number of eggs observed. Spawning <br />activity was noted throughout the day during the peak of the <br />reproductive season, but was most intense at dusk (Bozek et al. <br />1984) . <br />Razorback suckers in Lake Mohave had an extended spawning <br />season from late winter to early summer (Minckley 1973). In 1982 <br />and 2983, razorback suckers spawned from late November into May, <br />35 <br />