Review of sterlet (Acipenser ruthenus L. 1758) (Actinopterygii: Acipenseridae) feeding habits in the River Danube, 1694-852 river km
2015
Autori:
Đikanović, VesnaSkoric, S.
Lenhardt, Mirjana
Smederevac-Lalic, M.
Visnjic-Jeftic, Z.
Spasic, S.
Mickovic, B.
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
The aim of this work is to present the variation in the sterlet's
(Acipenser ruthenus L. 1758) diet along the course of the River Danube,
from 1694 to 852 river km. The diet of sterlet mostly comprised 12
bottom fauna taxa. Sterlet in the Danube feed mainly on larvae of
Trichoptera, Chironomidae (Diptera) and Gammaridae (Amphipoda), with a
reduction in food composition variability close to the Djerdap I dam and
in the reservoir between the two dams. The other components of the diet
were Corophium sp., Asselus sp., Mollusca, Oligochaeta, Annelida,
Insecta, Nematoda and Hirudinea. The organisms typical of
lithorheophilic and psammorheophilic biocoenoses play a considerable
role in the diet of the sterlet. Composition of bottom fauna as food
items varies due to changes in environmental conditions induced mainly
by the construction of two dams: Djerdap I (943river km, 1970) and
Djerdap II (863river km, 1984).
Ključne reči:
spatial variations; River Danube; diet; invertebrate; bottom fauna; sturgeon; sterletIzvor:
Journal of Natural History, 2015, 49, 5-8, SI, 411-417
DOI: 10.1080/00222933.2013.877991
ISSN: 1464-5262