Aarnio, K; Bonsdorff, E. (1997). Passing the gut of juvenile flounder, Platichthys flesus: differential survival of zoobenthic prey species. Marine Biology. 129 (1), 11-14.

213191

Aarnio, K; Bonsdorff, E

1997

129 (1), 11-14

Publication

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We studied the resistance of benthic prey organisms (Ostracoda, Hydrohia spp., Macoma halthica) to digestion by juvenile flounder, Platichthys flesus (L.), in a series of aquarium experiments. Results showed that some food species are able to survive the gut passage (Ostracoda 53 to 75%, Hydrohia spp. 46 to 92%). This has ecological implications, as increasing eutrophication of the Baltic Sea favours prey species that are nondigestible for the juvenile flounder. Thus, seemingly small changes in food-web structure may have unpredictable effects for the predatory fish.

Ostracoda

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