Food of roach (Rutilus rutilus) and ide (Leusiscus idus): significance of diet shift for interspecific competition in omnivorous fishes

Oecologia ◽  
1985 ◽  
Vol 66 (4) ◽  
pp. 461-467 ◽  
Author(s):  
�ge Brabrand
Keyword(s):  
Interspecific Competition ◽  
Rutilus Rutilus ◽  
Diet Shift ◽  
Roach Rutilus Rutilus

Functional link between foraging performance, functional morphology, and diet shift in roach (Rutilus rutilus)

2003 ◽  
Vol 60 (6) ◽  
pp. 700-709 ◽  
Author(s):  
Joakim Hjelm ◽  
Gerco H van de Weerd ◽  
Ferdinand A Sibbing
Keyword(s):  
Functional Morphology ◽  
Body Shape ◽  
Rutilus Rutilus ◽  
Diet Shift ◽  
Intake Rate ◽  
Feeding Apparatus ◽  
Roach Rutilus Rutilus ◽  
Functional Link ◽  
Trade Offs ◽  
Foraging Performance

This study explores how feeding performance (size-dependent attack rate) and the diet shift from zooplankton to benthic macroinvertebrates in the fish species roach (Rutilus rutilus L.) is related to changes in functional morphology over ontogeny. The morphological changes included overall body shape and structures of the feeding apparatus. The foraging performance of roach on zooplankton, as a function of size, was hump-shaped with a maximum of ~160 mm, and the diet shift took place around 150 mm. Over ontogeny, roach body shape gradually changed from fusiform into high-bodied. The second principal component (PC2) of the feeding apparatus had a U-shaped relationship with body size, with a minimum at 140-mm total length, which is the inverse of that found for the foraging performance on zooplankton. We suggest that changes of the feeding apparatus affect prey intake during the early zooplanktivorous phases and at the final benthivorous feeding stage, whereas prey retention ability limits the maximum intake rate at a later phase of the zooplanktivorous feeding stage. Our results also suggest the presence of both positive and negative correlations in morphology between the feeding niches, which point to the occurrence of morphological trade-offs within ontogenetic niches.

Population Characteristics and Feeding of Roach Rutilus rutilus in Small Regulated River of the Kyiv Polissya

2020 ◽  
Vol 56 (1) ◽  
pp. 42-48
Author(s):  
Ye. A. Gupalo ◽  
I. I. Abramyuk ◽  
S. A. Afanasyev ◽  
O. V. Manturova ◽  
Ye. V. Savchenko
Keyword(s):  
Rutilus Rutilus ◽  
Population Characteristics ◽  
Regulated River ◽  
Roach Rutilus Rutilus

scholarly journals Investigation into Adaptation in Genes Associated with Response to Estrogenic Pollution in Populations of Roach (Rutilus rutilus) Living in English Rivers

2020 ◽  
Vol 54 (24) ◽  
pp. 15935-15945
Author(s):  
Patrick B. Hamilton ◽  
Anne E. Lockyer ◽  
Tamsyn M. Uren Webster ◽  
David J. Studholme ◽  
Josephine R. Paris ◽  
...  
Keyword(s):  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus

scholarly journals Molecular detection of a novel cyprinid herpesvirus in roach (Rutilus rutilus) and asp (Leuciscus aspius) showing typical signs of carp pox disease

2020 ◽  
Vol 165 (7) ◽  
pp. 1569-1576 ◽  
Author(s):  
Boglárka Sellyei ◽  
Ferenc Baska ◽  
Ádám Varga ◽  
Réka Borzák ◽  
Andor Doszpoly
Keyword(s):  
Molecular Detection ◽  
Rutilus Rutilus ◽  
Roach Rutilus Rutilus
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