Laserfiche WebLink
<br />. <br /> <br />fish, thus removing any error that might exist between whether these are truly age- 7 and age-9 <br /> <br />fish). <br /> <br />. <br /> <br />Stomach Content Analysis <br /> <br />The stomach content analysis revealed very little new information. Clearly, northern pike <br /> <br />eat native fish and can eat native fish that have recently been stocked in the river. A gape <br /> <br />analysis of northern pike might be more informative as to the potential predatory danger of the <br />species on native fish in the river. <br /> <br />. <br /> <br />. <br /> <br />Because catch rates have remained low from 2002 to 2006 and because it is likely a result <br /> <br />of the removal effort, many members of the Program have recommended discontinuing specific <br /> <br />northern pike removal efforts. While we agree that a reduction in effort is certainly warranted, <br /> <br />we are hesitant to completely discontinue this project. Northern pike are known to spawn <br /> <br />immediately after ice-off in early spring (Sigler and Sigler 1996 and references therein). They <br /> <br />are known to have spawned in the middle Green River on one other occasion and their known <br /> <br />concentration areas are ideal spawning habitat for this species (K. Christopherson, pers. comm.). <br /> <br /> <br />Northern pike removal is the only project ongoing at this time of year and is highly efficient at <br /> <br /> <br />removing other problematic nonnative species such as white sucker. Our recommendation is <br /> <br /> <br />therefore to continue a preventative level of early spring nonnative fish removal. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />28 <br /> <br />. <br />