Estimating relative per capita predation rates from molecular gut content analysis

Andow, David A.; Paula, Débora Pires

doi:10.1016/j.biocontrol.2024.105499

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2024

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Cited by 2 publications

References 67 publications

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Recent advances in characterizing trophic connections in biological control

Rondoni,

Collatz,

Jonsson

et al. 2024

Biological Control

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Recent advances in characterizing trophic connections in biological control

Rondoni,

Collatz,

Jonsson

et al. 2024

Biological Control

View full text Add to dashboard Cite

Unveiling the Hidden Feast: from molecular detection to predation rate – An example on biological control by generalist predators

Masson,

Rastello,

Sacco-Martret de Preville

et al. 2024

Preprint

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Very few processes are as decisive as predation in shaping the structure and dynamics of ecological communities. For most predator species, the number of prey items killed by a predator in a day (predation rate) remains impossible to assess because direct observations are scarce or impossible to acquire. To fill this gap, we propose here a Hierarchical Bayesian Model that integrates data on the molecular detection of prey in predators (e.g. PCR results), on individuals captured in the field on the one hand, and on individuals fed in the laboratory, on the other, in a novel mechanistic framework. By explicitly combining the processes of predation and digestion, model fit provides an estimate of the slope and intercept of the digestion curve, and an estimate of the number of prey consumed by a predator in a day. In a case study targeting 25 carabid beetle species and 5 types of prey in agricultural fields (winter wheat), we use our model to estimate predation rates at species and community scales and demonstrate its advantages for studies on biocontrol and beyond.

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Estimating relative per capita predation rates from molecular gut content analysis

Cited by 2 publications

References 67 publications

Recent advances in characterizing trophic connections in biological control

Recent advances in characterizing trophic connections in biological control

Unveiling the Hidden Feast: from molecular detection to predation rate – An example on biological control by generalist predators

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