Spatial analysis of targeted surveillance for screw-worm fly ( Chrysomya bezziana or Cochliomyia hominivorax) in Australia.

Autor: Fruean, SN, East, IJ
Předmět:
Zdroj: Australian Veterinary Journal; Jul2014, Vol. 92 Issue 7, p254-262, 8p
Abstrakt: Objective To assess Australia's targeted surveillance to detect an incursion of screw-worm fly ( Chrysomya bezziana). Methods A multi-criteria analysis shell was used to combine data on potential pathways of entry, availability of host species and environmental factors affecting survival of screw-worm fly in order to map spatial variation in the relative likelihood of a screw-worm fly incursion into Australia. Australia's current screw-worm fly surveillance activities were reviewed to determine whether they are located in the areas of highest likelihood of an incursion. Results Under average environmental conditions, an incursion of screw-worm fly in Australia is relatively more likely to occur along the north coast, down the eastern seaboard or in the south-east. Cold winter temperatures would limit the environmental suitability for screw-worm fly survival to the north and north-east coast and adjacent inland areas. Australia's current targeted surveillance conducted by the Northern Australia Quarantine Strategy program of the Australian Department of Agriculture (adult screw-worm fly trapping and myiasis sampling) correlated well with areas considered to have a high relative likelihood of an incursion of screw-worm fly. Adult fly trapping conducted at sea ports was less well correlated. Discussion Changes to surveillance at sea ports are proposed to better target areas considered to have a higher relative likelihood of screw-worm fly incursion. These include increasing the trapping intensity along the north and north-east coasts and shifting surveillance activity from the west coast to the south-east. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index