A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Effect of prey type and inorganic turbidity on littoral predator-prey interactions in a shallow lake: an experimental approach
Tekijät: Nurminen L, Pekcan-Hekim Z, Repka S, Horppila J
Kustantaja: SPRINGER
Julkaisuvuosi: 2010
Lehti: Hydrobiologia
Tietokannassa oleva lehden nimi: HYDROBIOLOGIA
Lehden akronyymi: HYDROBIOLOGIA
Vuosikerta: 646
Numero: 1
Aloitussivu: 209
Lopetussivu: 214
Sivujen määrä: 6
ISSN: 0018-8158
eISSN: 1573-5117
DOI: https://doi.org/10.1007/s10750-010-0175-1
Tiivistelmä
Predation often represents the prevailing process shaping aquatic ecosystems. As foraging and antipredatory behaviour frequently relate to vision, turbidity may often impair the interactions between the predator and its prey, depending on prey type and source and level of turbidity. We studied the effect of inorganic turbidity (0-30 NTU) on the effectiveness of fish feeding on two types of prey in different habitats: free-swimming cladoceran (Daphnia pulex) in open water and plant-associated cladoceran (Sida crystallina) attached to Nuphar lutea leaves. For the planktivore, we used vision-oriented perch (Perca fluviatilis) common in the littoral zone of temperate lakes. In our study, increasing inorganic turbidity did not appear to initiate any significant change in the feeding efficiency of perch on free-swimming Daphnia pulex. However, we saw a markedly different feeding efficiency when perch targeted plant-attached Sida crystallina. Our results substantiate that floating-leaved macrophytes in turbid lakes may provide a favourable habitat for plant-attached cladocerans.
Predation often represents the prevailing process shaping aquatic ecosystems. As foraging and antipredatory behaviour frequently relate to vision, turbidity may often impair the interactions between the predator and its prey, depending on prey type and source and level of turbidity. We studied the effect of inorganic turbidity (0-30 NTU) on the effectiveness of fish feeding on two types of prey in different habitats: free-swimming cladoceran (Daphnia pulex) in open water and plant-associated cladoceran (Sida crystallina) attached to Nuphar lutea leaves. For the planktivore, we used vision-oriented perch (Perca fluviatilis) common in the littoral zone of temperate lakes. In our study, increasing inorganic turbidity did not appear to initiate any significant change in the feeding efficiency of perch on free-swimming Daphnia pulex. However, we saw a markedly different feeding efficiency when perch targeted plant-attached Sida crystallina. Our results substantiate that floating-leaved macrophytes in turbid lakes may provide a favourable habitat for plant-attached cladocerans.
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