2010
DOI: 10.1371/journal.pone.0010761
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The Functional Response of a Generalist Predator

Abstract: BackgroundPredators can have profound impacts on the dynamics of their prey that depend on how predator consumption is affected by prey density (the predator's functional response). Consumption by a generalist predator is expected to depend on the densities of all its major prey species (its multispecies functional response, or MSFR), but most studies of generalists have focussed on their functional response to only one prey species.Methodology and principal findingsUsing Bayesian methods, we fit an MSFR to fi… Show more

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Cited by 94 publications
(111 citation statements)
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“…If the remains of some prey species are less likely to be found because scats containing them are less likely to be collected, this could lead 274 Sharples et al: Harbour seal diet in southeast Scotland to bias. We are unable to investigate this for harbour seals, but Smout (2006) found no bias in estimates of grey seal diet as a result of foraging offshore and species-specific differences in passage times of prey remains through the gut.…”
Section: Importance Of Salmon In Harbour Seal Dietmentioning
confidence: 81%
See 1 more Smart Citation
“…If the remains of some prey species are less likely to be found because scats containing them are less likely to be collected, this could lead 274 Sharples et al: Harbour seal diet in southeast Scotland to bias. We are unable to investigate this for harbour seals, but Smout (2006) found no bias in estimates of grey seal diet as a result of foraging offshore and species-specific differences in passage times of prey remains through the gut.…”
Section: Importance Of Salmon In Harbour Seal Dietmentioning
confidence: 81%
“…If the remains of some prey species are less likely to be found because scats containing them are less likely to be collected, this could lead 274 Sharples et al: Harbour seal diet in southeast Scotland to bias. We are unable to investigate this for harbour seals, but Smout (2006) found no bias in estimates of grey seal diet as a result of foraging offshore and species-specific differences in passage times of prey remains through the gut.There are no robust estimates of salmon stock size but estimates can be made from the rod and line catches and assumptions of the catchability of salmon by fishermen in different seasons. Rod and line catches of salmon are available for the Rivers Tay, Earn and Eden combined (the Tay being the main salmon fishing river).…”
mentioning
confidence: 81%
“…Nevertheless, development of methods accounting for multiple prey functional responses and predator and prey behavior are of growing interest (e.g. Scharf et al, 2008;Smout et al, 2010). Accordingly, within the context of biological control, further research is needed to test under which situations the parameters of the functional response models and their derivates such as the maximum attack rate could be suitable stand-alone surrogates of the suppression potential of a biological control agent.…”
Section: Methods Limitationsmentioning
confidence: 99%
“…Prediction of consumer impact has been assessed through the use of comparative functional response analyses (Smout et al 2010;Alexander et al 2012;Alexander et al 2013;Dick et al 2013;Dick et al 2014;Laverty et al 2014;Wasserman et al 2016a, b;Dick et al 2017). This method has been pioneered for the prediction of invasive species impacts in comparison to trophically analogous native species Paterson et al 2015;Dick et al 2017).…”
Section: Introductionmentioning
confidence: 99%