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Mansfield eucs 2016.pdf (1.35 MB)

New communities on eucalypts grown outside Australia

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posted on 2023-05-03, 13:25 authored by Sarah MansfieldSarah Mansfield
The expansion of eucalypt forestry worldwide has been accompanied by accidental and deliberate introductions of Australian insects associated with eucalypts. Local insect species have also colonized introduced eucalypts in many regions. This situation provides a unique opportunity to observe the development of new insect communities across trophic levels. Here the history of Australian invaders and native colonizers on eucalypts outside Australia is reviewed from the perspective of herbivore guilds: leaf chewers, sap suckers, wood borers, gall formers, termites. Historical patterns of invasion are identified across these guilds. Very few species of Australian leaf chewers, wood borers or termites have become widespread but these guilds are proportionately high in native colonizers. In contrast, sap suckers have multiple invasive species globally with relatively fewer native colonizers. The gall former guild also has several invasive species but so far includes no native colonizers, perhaps due to their tendency to have highly specific host plant associations. Natural enemies of Australian invaders are also members of new eucalypt insect communities, partly through planned biological control programs, but the rate of accidental introductions at higher trophic levels is increasing steadily. At the same time, local natural enemies enter eucalypt communities either to form new associations with Australian invaders or to follow native colonizers into this new habitat. Australian sap suckers have attracted far more new associations than other guilds so far. Native leaf chewers have often been followed by their local natural enemies into eucalypt communities, particularly in Brazil. Generally there are fewer records relating to local natural enemies and their role in new eucalypt communities. The complexity of new eucalypt communities outside Australia is expected to increase in future.

History

Rights statement

Open access

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

Frontiers Media S.A.

Journal title

Frontiers in Plant Science

ISSN

1664-462X

Citation

Mansfield, S. (2016). New communities on eucalypts grown outside Australia. Frontiers in Plant Science, 7, 1812. doi:10.3389/fpls.2016.01812

Funder

Lincoln University

Contract number

A18877

Job code

293023

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