Aphids and scale insects on threatened trees: co-extinction is a minor threat

Thacker, Jonathan I., Hopkins, Graham W. and Dixon, Anthony F. G. (2006) Aphids and scale insects on threatened trees: co-extinction is a minor threat. Oryx, 40 (2). pp. 233-236. ISSN 1365-3008

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Abstract

Co-extinction is the extinction of a species following the extinction of another species that it used as a resource, such as a food plant in the case of insect herbivores. The magnitude of the global co-extinction threat to two herbivorous insect taxa (aphids and scale insects) was estimated by compiling a list of species in these groups that are dependent on globally threatened trees. Eleven species of aphid (0.69%) and thirteen scale insects (1.15%) have a threatened tree as their sole host. This measure is comparable to recent estimates for insect herbivores, but far less than the published overall estimates of extinction risk for invertebrates, and highlights the dependence of insect herbivores on a wide range of habitat features.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Biological Sciences
Depositing User:	LivePure Connector
Date Deposited:	30 Jan 2019 15:30
Last Modified:	24 Oct 2022 02:04
URI:	https://ueaeprints.uea.ac.uk/id/eprint/69746
DOI:	10.1017/S0030605306000123

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