Library Open Repository

Susceptibility of Eucalyptus globulus ssp. globulus to sawfly (Perga affinis ssp. insularis) attack and its potential impact on plantation productivity

Downloads

Downloads per month over past year

Jordan, GJ and Potts, BM and Clarke, AR (2002) Susceptibility of Eucalyptus globulus ssp. globulus to sawfly (Perga affinis ssp. insularis) attack and its potential impact on plantation productivity. Forest Ecology and Management, 160 (1-3). pp. 189-199.

[img]
Preview
PDF (Author Version)
sawfly_paper_preprint.pdf | Download (299kB)
Available under University of Tasmania Standard License.

[img] PDF
Jordan-et-al-ForEcoMan2002.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

Sawflies (Perga species) are leaf-damaging pests of the major plantation tree species Eucalyptus globulus ssp. globulus. This work describes the patterns of quantitative genetic variation in susceptibility to attack by Perga affinis ssp. insularis, based on data from a large open-pollinated trial containing genetic material from throughout the geographic range of E. globulus ssp. globulus. Forty three percent of the trees in the trial exhibited damage from sawflies in either their sixth or seventh growth seasons. The incidence of damage was genetically based, with significant variation between geographic races of E. globulus ssp. globulus and highly heritable (h2 = 0.43 +/- 0.05) variation in damage incidence within races was observed. Susceptibility to sawfly damage significantly affects plant fitness with both genetic and environmental correlations demonstrating that that sawfly damage causes slow growth and increased mortality of trees. Mild and severe sawfly damage resulted in 16 % and 31 % reduction in the basal area of surviving trees, and the effect was consistent across races and families. Based on this data, we propose a model predicting relative plantation productivity of races of different susceptibility under different infestation regimes.

Item Type: Article
Keywords: insect damage, pulpwood, quantitative genetics, heritability, genetic correlation, fitness
Journal or Publication Title: Forest Ecology and Management
Page Range: pp. 189-199
Identification Number - DOI: 10.1016/S0378-1127(01)00445-5
Additional Information: BM Potts. The definitive version is available online at http://www.sciencedirect.com/
Date Deposited: 03 Sep 2007
Last Modified: 18 Nov 2014 03:21
URI: http://eprints.utas.edu.au/id/eprint/1797
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page