In situ diel patterns of zooplankton consumption by subadult/adult roach, Rutilus rutilus, bream, Abramis brama, and bleak Alburnus alburnus
1.
SYSNO ASEP
0104274
Document Type
J - Journal Article
R&D Document Type
Journal Article
Subsidiary J
Ostatní články
Title
In situ diel patterns of zooplankton consumption by subadult/adult roach, Rutilus rutilus, bream, Abramis brama, and bleak Alburnus alburnus
Title
Denní periodicita příjmu zooplanktonu ploticí (Rutilus rutilus), cejnem (Abramis brama) a ouklejí (Alburnus alburnus) v přirozených podmínkách
Author(s)
Vašek, Mojmír (HBU-Z) Kubečka, Jan (HBU-Z)
Source Title
Folia zoologica. - : Ústav biologie obratlovců AV ČR, v. v. i.
- ISSN 0139-7893
Roč. 53, č. 2 (2004), s. 203-214
Number of pages
12 s.
Language
eng - English
Country
CZ - Czech Republic
Keywords
feeding periodicity ; gut fullness ; cyprinids
Subject RIV
EG - Zoology
R&D Projects
IAA6017201 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
Annotation
Diel feeding patterns of subadult and adult cyprinids of three species (roach Rutilus rutilus, bream Abramis brama, bleak Alburnus alburnus), which foraged almost exclusively on microcrustacean plankton, were studied in the meso-eutrophic Římov Reservoir (Czech Republic). All cyprinids showed a daytime feeding periodicity, with a marked decline in their gut fullness was regularly observed after the onset of darkness. Diel variations in gut fullness were observed in roach 200-270 mm standard length (SL) and bream 220-330 mm SL during May and in bleak, roach and bream of 110-170 mm SL, respectively, during August. Our results corroborate other studies in which light intensity has been found to be an important factor affecting cyprinid foraging on zooplankton. Daily zooplankton consumption rates ranged from 1.5 % of wet body weight in bream (220-330 mm SL) to 9.9 % of wet body weight in bleak (110-170 mm SL).
Workplace
Institute of Hydrobiology (until 2005)
Contact
Václava Lavičková, lavickova@hbu.cas.cz, Tel.: 387 775 889
Year of Publishing
2005
Number of the records: 1
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