We investigated the distribution and predation activities of northern Squawfish Ptychocheilus oregonensis at three locations where hatchery‐reared juvenile salmonids Oncorhynchus spp. were released in Bonneville Pool, a Columbia River reservoir. Significant increases in northern Squawfish catch rate occurred at all three locations after releases. The timing and duration of elevated catch rates appear to be closely related to the release and subsequent residence time of the hatchery‐released fish in the sampling area. Northern Squawfish caught after salmonid releases had a significantly higher frequency of occurrence and mean number of juvenile salmonids in their diet compared with fish caught before releases. Consumption indices, relative measures of consumption rates, were also higher at each location after release, Our results suggest that northern Squawfish aggregate to feed on hatchery‐released juvenile salmonids in the spring. Management activities to reduce predation on juvenile salmonids should consider (1) removing predators from areas where they concentrate to feed on juvenile salmonids, specifically near hatchery release points where the residence time of juveniles may be prolonged, (2) releasing hatchery fish that are larger, and (3) adopting hatchery release plans that reduce the residence time of hatchery fish at the release location.
We are concerned that Bushman and Anderson's (June-July 2001) article on media violence contains data that are incorrect or irreproducible. This is a serious issue; the article has already been referenced by numerous other formal papers according to a Google scholarly article search as well as in a statement to the U.S. Senate (Cantor, 2001), in legal proceedings, and in California State law (Assembly Bill 1179 in 2005.Bushman and Anderson's (2001) article is complex, written as an opinion piece, a review, and also a report of new research findings. In one portion of the article, the authors created a bar graph (see Figure 2, p. 481) that shows the correlation found between media violence and aggression in one particular meta-analysis (Paik & Comstock, 1994); this correlation is compared with nine other correlations from unrelated areas. For example, Bushman and Anderson displayed the correlation between "passive smoking and lung cancer." In summarizing their findings, they emphasized that the variables used to measure violent media and aggression had the second highest correlation of those pictured. Indeed, it ap-
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