TY - JOUR
T1 - A stochastic predation model
T2 - Application to largemouth bass observations
AU - DeAngelis, D. L.
AU - Adams, S. M.
AU - Breck, J. E.
AU - Gross, L. J.
N1 - Funding Information:
We wish to expresso ur thanks for the thoughtfucl ommentos n earlier versionso f this manuscripbt y G. Sugiharaa nd C.W. Gehrs of Oak Ridge National Laboratorya nd P.A. Cochran of The Universityo f Wisconsin. Researchs ponsoredb y the Office of Health and EnvironmentaRle search, U.S. Departmenot f Energy, under contractW -7405-eng-26w ith Union Carbide CorporationP. ublicationN o. 2343, EnvironmentaSlc iencesD ivi-sion, ORNL.
PY - 1984/8
Y1 - 1984/8
N2 - Predation by largemouth bass (Micropterus salmoides L.) is modeled as a Poisson renewal process, except for a modification to include diurnal variations in the likelihood of predation. The model simulates the distribution of numbers of prey in largemouth bass stomachs and the 'apparent' distribution of prey intercapture intervals for bass captured in 1980 and is validated against 1982 data. The apparent distribution of prey intercapture times, based on measurements of the length of time decomposing prey had been in largemouth bass stomachs, utilizes bass that have two or more prey in their stomach. Because most bass have zero or one prey in their stomach, this calculation errs seriously in biasing the predicted distribution toward short intercapture times. The simulation model, by allowing sampling regimes that are impractical in the field, estimates the true prey intercapture time distribution.
AB - Predation by largemouth bass (Micropterus salmoides L.) is modeled as a Poisson renewal process, except for a modification to include diurnal variations in the likelihood of predation. The model simulates the distribution of numbers of prey in largemouth bass stomachs and the 'apparent' distribution of prey intercapture intervals for bass captured in 1980 and is validated against 1982 data. The apparent distribution of prey intercapture times, based on measurements of the length of time decomposing prey had been in largemouth bass stomachs, utilizes bass that have two or more prey in their stomach. Because most bass have zero or one prey in their stomach, this calculation errs seriously in biasing the predicted distribution toward short intercapture times. The simulation model, by allowing sampling regimes that are impractical in the field, estimates the true prey intercapture time distribution.
UR - http://www.scopus.com/inward/record.url?scp=0021580284&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0021580284&partnerID=8YFLogxK
U2 - 10.1016/0304-3800(84)90053-X
DO - 10.1016/0304-3800(84)90053-X
M3 - Article
AN - SCOPUS:0021580284
VL - 24
SP - 25
EP - 41
JO - Ecological Modelling
JF - Ecological Modelling
SN - 0304-3800
IS - 1-2
ER -