Density estimates of rural dog populations and an assessment of marking methods during a rabies vaccination campaign in the Philippines. Childs, J. E., Robinson, L. E., Sadek, R., Madden, A., Miranda, M. E., & Miranda, N. L. Preventive Veterinary Medicine, 33(1-4):207–218, Viral and Rickettsial Zoonoses Br., Centers for Dis. Contr. and Prev., 1600 Clifton Road MS/G13, Atlanta, GA 30333, United States, 1998. abstract bibtex We estimated the population density of dogs by distance sampling and assessed the potential utility of two marking methods for capture-mark-recapture applications following a mass canine rabies-vaccination campaign in Sorsogon Province, the Republic of the Philippines. Thirty villages selected to assess vaccine coverage and for dog surveys were visited 1 to 11 days after the vaccinating team. Measurements of the distance of dogs or groups of dogs from transect lines were obtained in 1088 instances (N = 1278 dogs; mean group size = 1.2). Various functions modelling the probability of detection were fitted to a truncated distribution of distances of dogs from transect lines. A hazard rate model provided the best fit and an overall estimate of dog-population density of 468/km2 (95% confidence interval, 359 to 611). At vaccination, most dogs were marked with either a paint stick or a black plastic collar. Overall, 34.8% of 2167 and 28.5% of 2115 dogs could be accurately identified as wearing a collar or showing a paint mark; 49.1% of the dogs had either mark. Increasing time interval between vaccination-team visit and dog survey and increasing distance from transect line were inversely associated with the probability of observing a paint mark. Probability of observing a collar was positively associated with increasing estimated density of the dog population in a given village and with animals not associated with a house. The data indicate that distance sampling is a relatively simple and adaptable method for estimating dog-population density and is not prone to problems associated with meeting some model assumptions inherent to mark-recapture estimators. © 1998 Elsevier Science B.V.
@ARTICLE{Childs1998,
author = {Childs, J. E. and Robinson, L. E. and Sadek, R. and Madden, A. and
Miranda, M. E. and Miranda, N. L.},
title = {Density estimates of rural dog populations and an assessment of marking
methods during a rabies vaccination campaign in the Philippines},
journal = {Preventive Veterinary Medicine},
year = {1998},
volume = {33},
pages = {207--218},
number = {1-4},
abstract = {We estimated the population density of dogs by distance sampling and
assessed the potential utility of two marking methods for capture-mark-recapture
applications following a mass canine rabies-vaccination campaign
in Sorsogon Province, the Republic of the Philippines. Thirty villages
selected to assess vaccine coverage and for dog surveys were visited
1 to 11 days after the vaccinating team. Measurements of the distance
of dogs or groups of dogs from transect lines were obtained in 1088
instances (N = 1278 dogs; mean group size = 1.2). Various functions
modelling the probability of detection were fitted to a truncated
distribution of distances of dogs from transect lines. A hazard rate
model provided the best fit and an overall estimate of dog-population
density of 468/km2 (95% confidence interval, 359 to 611). At vaccination,
most dogs were marked with either a paint stick or a black plastic
collar. Overall, 34.8% of 2167 and 28.5% of 2115 dogs could be accurately
identified as wearing a collar or showing a paint mark; 49.1% of
the dogs had either mark. Increasing time interval between vaccination-team
visit and dog survey and increasing distance from transect line were
inversely associated with the probability of observing a paint mark.
Probability of observing a collar was positively associated with
increasing estimated density of the dog population in a given village
and with animals not associated with a house. The data indicate that
distance sampling is a relatively simple and adaptable method for
estimating dog-population density and is not prone to problems associated
with meeting some model assumptions inherent to mark-recapture estimators.
© 1998 Elsevier Science B.V.},
address = {Viral and Rickettsial Zoonoses Br., Centers for Dis. Contr. and Prev.,
1600 Clifton Road MS/G13, Atlanta, GA 30333, United States},
keywords = {Dog, Mark-recapture, Philippines, Population estimation, Rabies virus
vaccination, Sampling},
owner = {eric},
subdatabase = {distance},
timestamp = {2006.11.05}
}
Downloads: 0
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Thirty villages selected to assess vaccine coverage and for dog surveys were visited 1 to 11 days after the vaccinating team. Measurements of the distance of dogs or groups of dogs from transect lines were obtained in 1088 instances (N = 1278 dogs; mean group size = 1.2). Various functions modelling the probability of detection were fitted to a truncated distribution of distances of dogs from transect lines. A hazard rate model provided the best fit and an overall estimate of dog-population density of 468/km2 (95% confidence interval, 359 to 611). At vaccination, most dogs were marked with either a paint stick or a black plastic collar. Overall, 34.8% of 2167 and 28.5% of 2115 dogs could be accurately identified as wearing a collar or showing a paint mark; 49.1% of the dogs had either mark. Increasing time interval between vaccination-team visit and dog survey and increasing distance from transect line were inversely associated with the probability of observing a paint mark. 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