Detecting alien invaders

Globalisation of trade is increasing the incidence of invasive pests (such as the Asian Longhorn Beetle) in the UK, and in other countries around the world, often causing significant economic damage.

To monitor these invasive insect species, Dr David Chesmore, a senior lecturer in the Department of Electronics at York University, is developing a system using computational bioacoustics.

Computational bioacoustics works by sensing sounds which are captured using microphones (including ultrasound for bat identification), hydrophones for underwater use, and vibration analysis to identify insects. The results are analysed by computer. The aim is to get a unique ‘fingerprint’ for each sound to allow for identification of a species.

The range of animals that can be analysed using the technique is wide, and includes bats, insects, cetaceans (such as whales, dolphins), amphibians, mammals, birds and aquatic mammals.

One of the aims of Dr Chesmore’s project is to develop a hand-held instrument for use on imported goods. The hand-held device will use vibration sensors to detect the larvae of invasive insects which may enter the country undetected in imported products.