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- Title
Food habits of fishes on unvegetated tidal mudflats in Tokyo Bay, central Japan.
- Authors
Kanou, Kouki; Sano, Mitsuhiko; Kohno, Hiroshi
- Abstract
To clarify the feeding habits of tidal mudflat fishes, the gut contents of 29 fish species, collected from unvegetated tidal mudflats in Tokyo Bay, central Honshu, Japan, were examined. Onto- genetic changes in food preference were recognized in 21 species, including several of commercial importance (e.g. Acanthogobius flavimanus, Konosirus punctatus, Mugil cephalus cephalus, Plecoglossus altivelis altivelis, and Sardinella zunasi). In general, larvae and/or juveniles of these species fed mainly on small zooplankton or benthic harpacticoid copepods, later switching to other prey items with growth (e.g. gammaridean amphipods, mysids, polychaetes, detritus, bivalves, and juvenile fishes). A cluster analysis based on dietary overlaps showed that the tidal mudflat fish assemblage comprised six feeding guilds (small benthic and epiphytic crustacean, zooplankton, detritus, mollusc, polychaete, and fish feeders). Of these, small benthic and epiphytic crustacean feeders were the most abundantly represented in the number of species.
- Subjects
FISHES; AQUATIC animals; FISHERIES; FOOD habits; PLECOGLOSSUS; AYU
- Publication
Fisheries Science, 2004, Vol 70, Issue 6, p978
- ISSN
0919-9268
- Publication type
Article
- DOI
10.1111/j.0919-9268.2004.00897.x