caa a22 4500 477116353 CHVBK 20180405111623.0 cr unu---uuuuu 170330e19960201xx s 000 0 eng 10.1007/BF00005234 doi (NATIONALLICENCE)springer-10.1007/BF00005234 Kido Michael University of Hawaii, Kauai Research Facility, 7370A Kuamoo Road, 96746, Kapaa, HI, U.S.A. aut Diet and food selection in the endemic Hawaiian amphidromous goby, Sicyopterus stimpsoni (Pisces: Gobiidae) [Elektronische Daten] [Michael Kido] Synopsis: The ecological role of Sicyopterus stimpsoni as a nearly exclusive algal grazer in Hawaiian streams is established through gut content analysis of 192 fish from Wainiha River on the northern island of Kaua'i. Algae in three phyla (Chlorophyta, Cyanophyta, and Chrysophyta) were found to be the primary components of the fish's diet (94.62% of dry biomass). Aquatic insect immatures (primarily Chironomidae) accounted for most of the remaining food biomass (5.37%). Poorly developed gill rakers and high gut-to-length ratios provide evidence for adaptation to herbivory and morphological separation of S. stimpsoni from sympatric gobiods. Interspecific competition for the green alga, Cladophora sp., is suggested as an important feature of biotic interactions among native stream fishes but is mitigated by interspecific differences in food preference and utilization. A Category V hurricane which devastated the island in September 1992 provided a fortuitous opportunity to study disturbance influences on benthic food resources in the stream. Disturbance regimes influenced food selection of S. stimpsoni by altering the abundance and composition of stream algae. Rapid adjustment of S. stimpsoni to changes occurring in algal resource abundance illustrates its superb adaptation to life in a swift-water environment subjected to periodic flood-induced disturbance. Kluwer Academic Publishers, 1996 Interspecific competition nationallicence Nonequilibrium theory nationallicence Disturbance regimes nationallicence Patch dynamics nationallicence Morphological separation nationallicence Environmental Biology of Fishes Kluwer Academic Publishers 45/2(1996-02-01), 199-209 0378-1909 45:2<199 1996 45 10641 https://doi.org/10.1007/BF00005234 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00005234 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kido Michael University of Hawaii, Kauai Research Facility, 7370A Kuamoo Road, 96746, Kapaa, HI, U.S.A aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Kluwer Academic Publishers 45/2(1996-02-01), 199-209 0378-1909 45:2<199 1996 45 10641 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer