Original title: Predation risk and habitat complexity modify intermediate predator feeding rates and energetic efficiencies in a tri-trophic system
Authors: KOLÁŘ, Vojtěch
Document type: Rigorous theses
Year: 2020
Language: eng
Abstract: Many species show behavioural and physiological responses to predation risk, with important implications for their individual growth and development, but these responses may be context dependent. The goal of this study was to measure feeding and metabolic rates of intermediate invertebrate predators under different levels of predation risk and abiotic conditions to understand how they might affect their energetic efficiency, i.e. the ability to utilize available resources for individual growth. We ran laboratory experiments with larvae of three odonate species representing intermediate predators exposed to three levels of predation risk (none, visual cues, and visual and chemical cues) and two levels of habitat complexity (present vs. absent artificial submerged vegetation). We show that the response of intermediate predators to predation risk and its consequences for energetic efficiency are species specific and likely determined by their foraging and defense traits and their habitat domains.
Keywords: chemical cues; metabolic rate; Odonata; predator-prey interactions; trait-mediated effects
Citation: KOLÁŘ, Vojtěch. Predation risk and habitat complexity modify intermediate predator feeding rates and energetic efficiencies in a tri-trophic system. České Budějovice, 2020. rigorózní práce (RNDr.). JIHOČESKÁ UNIVERZITA V ČESKÝCH BUDĚJOVICÍCH. Přírodovědecká fakulta

Institution: University of South Bohemia in České Budějovice (web)
Document availability information: Fulltext is available in the Digital Repository of University of South Bohemia.
Original record: http://www.jcu.cz/vskp/60042

Permalink: http://www.nusl.cz/ntk/nusl-515939


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Universities and colleges > Public universities > University of South Bohemia in České Budějovice
Academic theses (ETDs) > Rigorous theses