Počet záznamů: 1

Feeding behaviour determining differential capture success of evasive prey in underyearling European perch (Perca fluviatilis L.) and roach (Rutilus rutilus (L.))

  1. 1.
    0356738 - BC-A 2013 RIV NL eng J - Článek v odborném periodiku
    Peterka, Jiří - Matěna, Josef
    Feeding behaviour determining differential capture success of evasive prey in underyearling European perch (Perca fluviatilis L.) and roach (Rutilus rutilus (L.)).
    Hydrobiologia. Roč. 661, č. 1 (2011), s. 113-121 ISSN 0018-8158
    Grant CEP: GA AV ČR(CZ) IAA600170502; GA AV ČR(CZ) KJB600960810
    Výzkumný záměr: CEZ:AV0Z60170517
    Klíčová slova: feeding efficiency * attack-distance * repeated strikes * schooling * Daphnia * Cyclops
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 1.784, rok: 2011

    The effect of feeding behaviour on the prey capture efficiency of young-of-the-year European perch and roach was investigated in laboratory experiments using planktonic crustaceans possessing different escape abilities—Daphnia sp. and Cyclops sp. Except for situations in which Daphnia was offered at high densities, the feeding efficiency of perch was significantly higher compared to roach in all other combinations of prey types and densities. Roach consumed significantly less prey compared to perch when feeding exclusively on the evasive Cyclops and when it was offered in a 1:1 ratio mixture with Daphnia. The distinct differences in feeding efficiency between perch and roach were closely related to differences in their feeding behaviour. Discontinuous searching for prey, vigorous attacks, occurrence of repeated strikes and the absence of schooling increased perch prey capture efficiency, particularly when foraging on evasive copepods.
    Trvalý link: http://hdl.handle.net/11104/0195180