Diet of combtooth blennies (Blenniidae) in Kochi and Okinawa,Japan |
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Authors: | Peter J Hundt Yohei Nakamura Kosaku Yamaoka |
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Institution: | 1. Conservation Biology Graduate Program, 1987 Upper Buford Circle, University of Minnesota, St. Paul, Minnesota, 55108, USA 2. Bell Museum of Natural History, University of Minnesota, St. Paul, Minnesota, 55108, USA 3. Graduate School of Kuroshio Science, Kochi University, 200 Monobe, Nankoku, Kochi, 783-8502, Japan
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Abstract: | Combtooth blennies (Blenniidae) have a wide array of diets, including coral polyps, fish scales/mucus/rays, and detritus. However, there is limited knowledge about the diet of some species. We described the diet of 30 blenny species from subtidal, intertidal, or supralittoral habitats in Kochi (warm temperate) and Okinawa (tropical), Japan. Cluster analysis of dietary overlap grouped blennies into seven feeding groups: omnivores, herbivores, detritivores, molluscivores, corallivores, worm-like invertebrate feeders, and fish mucus/scale/ray feeders. The largest cluster, detritivores, contained 17 blenny species from all habitat zones and both climate zones. Our findings suggest that closely related species fill similar feeding niches and detritus is an important component of many blenny diets. |
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