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Titolo:
Seasonal shifts in day-time resource use of 0+barbel, Barbus barbus
Autore:
Bischoff, A; Freyhof, J;
Indirizzi:
Inst Freshwater Ecol & Inland Fisheries, Dept Biol & Ecol Fishes, D-12561 Berlin, Germany Inst Freshwater Ecol & Inland Fisheries Berlin Germany D-12561 , Germany Zool Res Inst, D-53113 Bonn, Germany Zool Res Inst Bonn Germany D-53113Zool Res Inst, D-53113 Bonn, Germany Museum Alexander Koenig, Dept Ichthyol, D-53113 Bonn, Germany Museum Alexander Koenig Bonn Germany D-53113 hyol, D-53113 Bonn, Germany
Titolo Testata:
ENVIRONMENTAL BIOLOGY OF FISHES
fascicolo: 1, volume: 56, anno: 1999,
pagine: 199 - 212
SICI:
0378-1909(199909)56:1<199:SSIDRU>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
RIVER-GREAT-OUSE; MICROHABITAT USE; FLOOD-PLAIN; RUTILUS-RUTILUS; EARLY LIFE; FISHES; STREAM; HABITAT; SIZE; POPULATIONS;
Keywords:
larvae; juveniles; body size; mesohabitat; microhabitat; riffles; diet;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
55
Recensione:
Indirizzi per estratti:
Indirizzo: Bischoff, A Inst Freshwater Ecol & Inland Fisheries, Dept Biol & Ecol Fishes, POB 850 119, D-12561 Berlin, Germany Inst Freshwater Ecol & Inland Fisheries POB 850 119 Berlin Germany D-12561
Citazione:
A. Bischoff e J. Freyhof, "Seasonal shifts in day-time resource use of 0+barbel, Barbus barbus", ENV BIOL F, 56(1), 1999, pp. 199-212

Abstract

Habitat preference and diet of 0+ barbel were studied both on a meso- and a microhabitat scale in the River Sieg (Germany) between May 1993 and January 1995. Changes in mesohabitat use were observed. Barbel moved from shallow bays (larvae and step 1 juveniles) to gravel banks, and subsequently, to riffles (step 2 juveniles). Size-dependent shifts in microhabitat-use were observed during the second juvenile step. These juveniles left the shoreline and preferred microhabitats with stronger current velocities. 0+ barbel in riffles fed on Chironomidae and Ephemeroptera. No remarkable shifts in diet were detected between larvae and juveniles. We suggest that the observedontogenetic shifts to habitats with high food supply and low predation pressure might contribute to the high abundances of barbel in the River Sieg.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 14:05:31