Early life-history predator-prey reversal in two cyprinid fishes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F17%3A00479889" target="_blank" >RIV/60077344:_____/17:00479889 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/17:43895829 RIV/60076658:12510/17:43895829
Result on the web
<a href="http://dx.doi.org/10.1038/s41598-017-07339-w" target="_blank" >http://dx.doi.org/10.1038/s41598-017-07339-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-017-07339-w" target="_blank" >10.1038/s41598-017-07339-w</a>

Result language
angličtina
Original language name
Early life-history predator-prey reversal in two cyprinid fishes
Original language description
Predator-prey relationships are often perceived simply as a situation in which a predator enhances its own fitness while reducing the fitness of its prey. However, this relationship may become reversed when the prey feeds on the juvenile predator stages. We investigated this phenomenon in a model asp (Leuciscus aspius, predator)-bleak (Alburnus alburnus, prey) relationship. The adhesive asp eggs are avail able for bleak predation after a spawning event for only tens of seconds before they adhere to the stones, where bleak do not forage. Gut content analysis demonstrated that eggs were utilized in high quantities, especially in the spawning peak of the asp reproductive season. Furthermore, using underwater video, we recorded the bleak feeding efficiency on naturally drifting asp eggs as the percentage of eggs eaten. Within the 40 cm egg trajectory captured by our cameras, total egg mortality was 21.2 ± 2.2% on average. The highest survival chances occurred among eggs drifting in aggregations, since the short drifting distance together with their aggregated distribution satiated bleak and part of the egg aggregation could attach to the spawning ground. This study emphasizes the potential efficiency of predator egg utilization by prey, which may have further consequences in predator-prey dynamics.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10618 - Ecology

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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