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were checked for the day). Effort was considered to be one crew-day, even though two or <br />more gears were used. Fyke nets were sometimes fished for several days without being <br />checked, but crew-days included only the days when the nets were set or checked (e.g. <br />several fyke nets set for three days and two nights were counted as two crew days). <br />RESULTS <br />Within the 16-km study area, nine northern pike were captured and removed in 1995 <br />and one was captured and removed in 1996 (Figure 2). A total of 28 crew-days were <br />expended in 1995 and 13 crew days were expended in 1996. Only one northern pike was <br />observed but not captured. One additional northern pike was removed from the Gunnison <br />River in 1996 during other sampling activities. It was captured in the fishway around the <br />Redlands Diversion Dam. This fish was not included in catch-per-effort calculations, but it <br />was included in distribution and length-frequency analyses. <br />In 1995, sampling success was immediate and dropped off dramatically (Figures 2 and <br />3). Six northern pike were captured on the first day of sampling--four of those fish were <br />caught in a single 1.1-km-long electrofishing pass immediately below Hartland Diversion. <br />The other two pike were captured in the remaining 4.7 km downstream to Confluence Park. <br />Surprisingly, a second crew doing 'scare and snare' in flooded areas ahead of the <br />electrofishing boat failed to capture any northern pike, even though many of the backwaters <br />sampled by the netting crew were also shacked after -the mouth was blocked. No northern <br />pike were captured an the second day of electrofishing-even though electrofishing effort was <br />doubled over day one--and one pike was collected on the third day of electrofishing. No <br />additional pike were collected until early fall even though considerable effort was expended. <br />in addition to electrofishing, Tyke nets and trammel nets were set in flooded areas throughout <br />the runoff period. Two or more fyke nets were set for at least two nights each week during <br />runoff. A flooded area at RK 86.7 where Burdick (1995) captured two northern pike was <br />regularly sampled. However, the intensive effort failed to capture any additional pike. The <br />two fish caught in September were captured by trammel netting backwaters along the river <br />6 <br />