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David Sloan Wilson, Patrick M. Muzzall, Timothy J. Ehlinger, Parasites, Morphology, and Habitat Use in a Bluegill Sunfish (Lepomis macrochirus) Population, Copeia, Vol. 1996, No. 2 (May 16, 1996), pp. 348-354
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Wilson et al. (1996) studied this question.
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