Changes in the utilization of microhabitat and food with growth of the amago Oncorhynchus rhodurus in a Japanese mountain stream

Changes in the utilization of microhabitat and food with growth of the amago Oncorhynchus rhodurus in a Japanese mountain stream

Changes of microhabitat and food selection with growth in Oncorhynchus rhodurus were investigated in a Japanese mountain stream from May to November 1984, Microhabitat and food of the age 0 group were different from those of the older age groups until August. Both age groups, however, utilized simil...

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Veröffentlicht in:NIPPON SUISAN GAKKAISHI 1988/01/25, Vol.54(1), pp.33-38
Hauptverfasser: Nagoshi, M. (Mie Univ., Tsu (Japan). Faculty of Fisheries), Nakano, S, Tokuda, Y
Format: Artikel
Sprache:jpn
Schlagworte:
AGE
COMPORTEMENT ALIMENTAIRE
COURS D'EAU
CRECIMIENTO
CROISSANCE
CURSOS DE AGUA
DINAMICA DE LA POBLACION
DYNAMIQUE DES POPULATIONS
EDAD
FEEDING HABITS
Freshwater
GROWTH
HABITAT
HABITATS
HABITOS ALIMENTARIOS
JAPAN
JAPON
ONCORHYNCHUS
Oncorhynchus rhodurus
POPULATION DYNAMICS
RIVERS
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Zusammenfassung:Changes of microhabitat and food selection with growth in Oncorhynchus rhodurus were investigated in a Japanese mountain stream from May to November 1984, Microhabitat and food of the age 0 group were different from those of the older age groups until August. Both age groups, however, utilized similar microhabitat and food after September when the age 0 group attained 7cm in mean body length, Relation between utilization of resources by each age group and population dynamics was discussed.
ISSN:0021-5392
1349-998X
DOI:10.2331/suisan.54.33