Effects of culling on badger abundance: implications for tuberculosis control

R. Woodroffe, P. Gilks, W.T. Johnston, A.M. Le Fevre, D.R. Cox, C.A. Donnelly, F.J. Bourne, C.L. Cheeseman, G. Gettinby, J.P. McInerney, W.I. Morrison

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Culling is often considered as a tool for controlling wildlife diseases that can also infect people or livestock. Culling European badgers Meles meles can cause both positive and negative effects on the incidence of bovine tuberculosis (TB) in cattle. One factor likely to influence the outcome of different badger culling strategies for cattle TB is the reduction in badger population density achieved. However, this reduction is difficult to measure because badgers, being nocturnal and fossorial, are difficult to count. Here, we use indices of badger abundance to measure the population impacts of two culling strategies tested in Britain. The densities of badger setts and latrines recorded before culling were correlated with the densities of badgers captured on initial culls, suggesting that both were indices of actual badger abundance. Widespread 'proactive' culling was associated with a 73% reduction in the density of badger latrines, a 69% reduction in the density of active burrows and a 73% reduction in the density of road killed badgers. This population reduction was achieved by a coordinated effort entailing widespread and repeated trapping over several years. However, this strategy caused only modest reductions in cattle TB incidence in culled areas and elevated incidence in neighbouring unculled areas. Localized 'reactive' culling caused a 26% reduction in latrine density, a 32% reduction in active burrow density and a 10% reduction in the density of road killed badgers, but apparently increased the incidence of cattle TB. These results indicate that the relationship between badger population reduction and TB transmission to cattle is strongly non linear, probably because culling prompts changes in badger behaviour that influence transmission rates. These findings raise serious questions about the capacity of badger culling to contribute to the control of cattle TB in Britain.
LanguageEnglish
Pages28-37
Number of pages10
JournalJournal of Zoology
Volume274
Issue number1
DOIs
Publication statusPublished - Jan 2008

Fingerprint

culling
culling (animals)
tuberculosis
badgers
cattle
burrow
incidence
bovine tuberculosis
effect
burrows
road
United Kingdom
roads
wildlife diseases
Meles meles
trapping
livestock
population density

Keywords

  • badger
  • culling
  • Meles meles
  • Mycobacterium bovis
  • perturbation
  • randomized badger culling trial
  • tuberculosis
  • wildlife disease

Cite this

Woodroffe, R., Gilks, P., Johnston, W. T., Le Fevre, A. M., Cox, D. R., Donnelly, C. A., ... Morrison, W. I. (2008). Effects of culling on badger abundance: implications for tuberculosis control. Journal of Zoology, 274(1), 28-37. https://doi.org/10.1111/j.1469-7998.2007.00353.x
Woodroffe, R. ; Gilks, P. ; Johnston, W.T. ; Le Fevre, A.M. ; Cox, D.R. ; Donnelly, C.A. ; Bourne, F.J. ; Cheeseman, C.L. ; Gettinby, G. ; McInerney, J.P. ; Morrison, W.I. / Effects of culling on badger abundance : implications for tuberculosis control. In: Journal of Zoology. 2008 ; Vol. 274, No. 1. pp. 28-37.
@article{6cad7d83ac2049f1aad16d8c5fc4a70e,
title = "Effects of culling on badger abundance: implications for tuberculosis control",
abstract = "Culling is often considered as a tool for controlling wildlife diseases that can also infect people or livestock. Culling European badgers Meles meles can cause both positive and negative effects on the incidence of bovine tuberculosis (TB) in cattle. One factor likely to influence the outcome of different badger culling strategies for cattle TB is the reduction in badger population density achieved. However, this reduction is difficult to measure because badgers, being nocturnal and fossorial, are difficult to count. Here, we use indices of badger abundance to measure the population impacts of two culling strategies tested in Britain. The densities of badger setts and latrines recorded before culling were correlated with the densities of badgers captured on initial culls, suggesting that both were indices of actual badger abundance. Widespread 'proactive' culling was associated with a 73{\%} reduction in the density of badger latrines, a 69{\%} reduction in the density of active burrows and a 73{\%} reduction in the density of road killed badgers. This population reduction was achieved by a coordinated effort entailing widespread and repeated trapping over several years. However, this strategy caused only modest reductions in cattle TB incidence in culled areas and elevated incidence in neighbouring unculled areas. Localized 'reactive' culling caused a 26{\%} reduction in latrine density, a 32{\%} reduction in active burrow density and a 10{\%} reduction in the density of road killed badgers, but apparently increased the incidence of cattle TB. These results indicate that the relationship between badger population reduction and TB transmission to cattle is strongly non linear, probably because culling prompts changes in badger behaviour that influence transmission rates. These findings raise serious questions about the capacity of badger culling to contribute to the control of cattle TB in Britain.",
keywords = "badger, culling, Meles meles, Mycobacterium bovis, perturbation, randomized badger culling trial, tuberculosis, wildlife disease",
author = "R. Woodroffe and P. Gilks and W.T. Johnston and {Le Fevre}, A.M. and D.R. Cox and C.A. Donnelly and F.J. Bourne and C.L. Cheeseman and G. Gettinby and J.P. McInerney and W.I. Morrison",
year = "2008",
month = "1",
doi = "10.1111/j.1469-7998.2007.00353.x",
language = "English",
volume = "274",
pages = "28--37",
journal = "Journal of Zoology",
issn = "0952-8369",
number = "1",

}

Woodroffe, R, Gilks, P, Johnston, WT, Le Fevre, AM, Cox, DR, Donnelly, CA, Bourne, FJ, Cheeseman, CL, Gettinby, G, McInerney, JP & Morrison, WI 2008, 'Effects of culling on badger abundance: implications for tuberculosis control' Journal of Zoology, vol. 274, no. 1, pp. 28-37. https://doi.org/10.1111/j.1469-7998.2007.00353.x

Effects of culling on badger abundance : implications for tuberculosis control. / Woodroffe, R.; Gilks, P.; Johnston, W.T.; Le Fevre, A.M.; Cox, D.R.; Donnelly, C.A.; Bourne, F.J.; Cheeseman, C.L.; Gettinby, G.; McInerney, J.P.; Morrison, W.I.

In: Journal of Zoology, Vol. 274, No. 1, 01.2008, p. 28-37.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of culling on badger abundance

T2 - Journal of Zoology

AU - Woodroffe, R.

AU - Gilks, P.

AU - Johnston, W.T.

AU - Le Fevre, A.M.

AU - Cox, D.R.

AU - Donnelly, C.A.

AU - Bourne, F.J.

AU - Cheeseman, C.L.

AU - Gettinby, G.

AU - McInerney, J.P.

AU - Morrison, W.I.

PY - 2008/1

Y1 - 2008/1

N2 - Culling is often considered as a tool for controlling wildlife diseases that can also infect people or livestock. Culling European badgers Meles meles can cause both positive and negative effects on the incidence of bovine tuberculosis (TB) in cattle. One factor likely to influence the outcome of different badger culling strategies for cattle TB is the reduction in badger population density achieved. However, this reduction is difficult to measure because badgers, being nocturnal and fossorial, are difficult to count. Here, we use indices of badger abundance to measure the population impacts of two culling strategies tested in Britain. The densities of badger setts and latrines recorded before culling were correlated with the densities of badgers captured on initial culls, suggesting that both were indices of actual badger abundance. Widespread 'proactive' culling was associated with a 73% reduction in the density of badger latrines, a 69% reduction in the density of active burrows and a 73% reduction in the density of road killed badgers. This population reduction was achieved by a coordinated effort entailing widespread and repeated trapping over several years. However, this strategy caused only modest reductions in cattle TB incidence in culled areas and elevated incidence in neighbouring unculled areas. Localized 'reactive' culling caused a 26% reduction in latrine density, a 32% reduction in active burrow density and a 10% reduction in the density of road killed badgers, but apparently increased the incidence of cattle TB. These results indicate that the relationship between badger population reduction and TB transmission to cattle is strongly non linear, probably because culling prompts changes in badger behaviour that influence transmission rates. These findings raise serious questions about the capacity of badger culling to contribute to the control of cattle TB in Britain.

AB - Culling is often considered as a tool for controlling wildlife diseases that can also infect people or livestock. Culling European badgers Meles meles can cause both positive and negative effects on the incidence of bovine tuberculosis (TB) in cattle. One factor likely to influence the outcome of different badger culling strategies for cattle TB is the reduction in badger population density achieved. However, this reduction is difficult to measure because badgers, being nocturnal and fossorial, are difficult to count. Here, we use indices of badger abundance to measure the population impacts of two culling strategies tested in Britain. The densities of badger setts and latrines recorded before culling were correlated with the densities of badgers captured on initial culls, suggesting that both were indices of actual badger abundance. Widespread 'proactive' culling was associated with a 73% reduction in the density of badger latrines, a 69% reduction in the density of active burrows and a 73% reduction in the density of road killed badgers. This population reduction was achieved by a coordinated effort entailing widespread and repeated trapping over several years. However, this strategy caused only modest reductions in cattle TB incidence in culled areas and elevated incidence in neighbouring unculled areas. Localized 'reactive' culling caused a 26% reduction in latrine density, a 32% reduction in active burrow density and a 10% reduction in the density of road killed badgers, but apparently increased the incidence of cattle TB. These results indicate that the relationship between badger population reduction and TB transmission to cattle is strongly non linear, probably because culling prompts changes in badger behaviour that influence transmission rates. These findings raise serious questions about the capacity of badger culling to contribute to the control of cattle TB in Britain.

KW - badger

KW - culling

KW - Meles meles

KW - Mycobacterium bovis

KW - perturbation

KW - randomized badger culling trial

KW - tuberculosis

KW - wildlife disease

U2 - 10.1111/j.1469-7998.2007.00353.x

DO - 10.1111/j.1469-7998.2007.00353.x

M3 - Article

VL - 274

SP - 28

EP - 37

JO - Journal of Zoology

JF - Journal of Zoology

SN - 0952-8369

IS - 1

ER -

Woodroffe R, Gilks P, Johnston WT, Le Fevre AM, Cox DR, Donnelly CA et al. Effects of culling on badger abundance: implications for tuberculosis control. Journal of Zoology. 2008 Jan;274(1):28-37. https://doi.org/10.1111/j.1469-7998.2007.00353.x