Diet-dependent body morphology and ontogenetic reaction norms in Eurasian perch

By J. Hjelm, R. Svanbäck, P. Byström, L. Persson, E. Wahlström. 2001

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Habitat structure, feeding mode and morphological reversibility: factors influencing phenotypic plasticity in perch (2005, background): “…in fish (Lindsey, 1981; Meyer, 1987; Wimberger, 1992; Day et al., 1994; Robinson and Wilson, 1995, 1996; Mittelbach et al., 1999), and in a previous field experiment (Hjelm et al., 2001) the morphology of young-of-the-year perch diverged with respect to habitat use in as short a time as 7 weeks.”
The Ecology of Individuals: Incidence and Implications of Individual Specialization (2002, background): “RO Feeding efficiency B/L Benthic and limnetic populations differ in morphology and foraging efficiency Hjelm et al. 2001; Svanbäck and Eklöv 2002; R. Svanbäck and P. Eklöv, unpublished manuscript Plecodus straeleni 1 h RO O Within-age and within-sex variation in hunting technique and prey…”
Genetic variation and phenotypic plasticity: Causes of morphological and dietary variation in Eurasian perch (2006, methodology): “…perch and other fish species have shown that individuals raised on a benthic diet develop a downward bending body, whereas individuals raised on a pelagic diet develop an upward bending body (Hjelm et al., 2001; Andersson, 2003; Olsson and Eklöv, 2005; P. Eklöv and R. Svanbäck, unpublished data).”