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Fig. 31. The average numbers (± SE) of jack mackerel juveniles that associated with moon jellyfish (closed circles) and an artificial jellyfish (open triangles) during each observation period. Asterisks represent the difference between moon jellyfish and artificial jellyfish (P < 0.05, t-test), and different letters represent significant differences among immediately before, immediately after, and 1 h and 3 h after feeding in the same size group (P < 0.05, Tukey's HSD test). Redrawn after, with kind permission from Springer Science+Business Media: Hydrobiologia, Ontogenetic changes in the ecological function of the association behavior between jack mackerel Trachurus japonicus and jellyfish. 616, 2009, 269­277, Masuda, Figure 2, © 2009, Springer.

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