Australian plague locust
The Australian Plague Locust Commission (APLC) produces a monthly Locust Bulletin during the periods of locust activity (spring, summer and autumn). The bulletin gives regional summaries of the locust situation and weather events of potential significance for locust development. It also provides a forecast of likely developments for the next two months for the Australian plague locust (Chortoicetes terminifera), spur-throated locust (Austracris guttulosa) and the migratory locust (Locusta migratoria).
According to the APLC, Australian plague locust populations remained at low densities in most regions during March 2017. However, medium density adult populations were maintained in the Far North region of South Australia and in parts of Southwest Queensland following breeding in late January. Few nymphs were recorded during March, reflecting limited egg laying during February. Due to unsuitable breeding habitat conditions there are unlikely to be significant numbers of nymphs in most regions during April or May. Most eggs laid in autumn will enter diapause dormancy and not hatch until spring.
The outlook for the remainder of autumn is for locust population densities to remain low in most regions of New South Wales and Queensland. In South Australia adult numbers are likely to decline to low densities, although medium density populations could breed in parts of the Northeast and Western Agricultural regions. There is a low probability of swarm infestations in any state during autumn. Consequently, there is a low risk of widespread nymph infestations during spring.
For further information, go to Australian Plague Locust Commission
Australian plague locust distribution 1 March to 4 April 2017
©Commonwealth of Australia 2016, Department of Agriculture and Water Resources Issued: 04/04/2017
Densities estimated for areas of locust habitat, based on current surveys and reports from current and previous month.
Sourced from ABARES Weekly Australian Climate, Water and Agricultural Update (13 April 2017)