Predation risk and habitat complexity modify intermediate predator feeding rates and energetic efficiencies in a tri-trophic system
Main topic in English
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Title according to student
Predation risk and habitat complexity modify intermediate predator feeding rates and energetic efficiencies in a tri-trophic system
English title as given by the student
Predation risk and habitat complexity modify intermediate predator feeding rates and energetic efficiencies in a tri-trophic system
Parallel name
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Subtitle
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Annotation
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Annotation in English
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
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Keywords in English
chemical cues, metabolic rate, Odonata, predator-prey interactions, trait-mediated effects
Length of the covering note
16
Language
AN
Annotation
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Annotation in English
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
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Keywords in English
chemical cues, metabolic rate, Odonata, predator-prey interactions, trait-mediated effects