To examine the impact of roost modification and dispersal on Hendra Virus infection dynamics and cortisol concentration dynamics in flying-foxes
Type of Study:
Manipulative (BACI) experiment
The difference in mean Hendra Virus prevalence in samples collected before (4.9%), during (4.7%) and after (3.4%) roost disturbance was small and non-significant. Similarly, the difference in mean urine specific gravity-corrected urinary cortisol concentrations was small and non-significant.
Roost distubance (modification or dispersal)
We found that the level of flying-fox distress associated with roost disturbance reflected the nature and timing of the activity, highlighting the need for a ‘best practice’ approach to dispersal or roost modification activities. Recent legislative changes to flying-fox management in Queensland (and similar legislation currently under consideration in New South Wales) which devolve the management of urban flying-fox roosts from the state environmental agency to local authorities could result in a greater frequency of roost disturbance than in our study, with unknown effect on roost connectivity at the higher level.
Generalised linear mixed models using restricted maximum likelihood
Queensland and New South Wales
Response variable :
Hendra excretion prevalence and urinary cortisol levels.
Edson, D., Field, H., McMichael, L., Jordan, D., Kung, N., Mayer, D., Smith, C. (2015) Flying-fox roost disturbance and Hendra virus spillover risk (ed B. S. Schneider). PLoS One. 10, e0125881.