The seasonal phenology of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) in Queensland

Muthuthantri, Sakuntala, Maelzer, Derek, Zalucki, Myron P. and Clarke, Anthony R. (2010) The seasonal phenology of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) in Queensland. Australian Journal of Entomology, 49 3: 221-233. doi:10.1111/j.1440-6055.2010.00759.x

Author Muthuthantri, Sakuntala
Maelzer, Derek
Zalucki, Myron P.
Clarke, Anthony R.
Title The seasonal phenology of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) in Queensland
Formatted title
The seasonal phenology of Bactrocera tryoni (Froggatt) (Diptera: Tephritidae) in Queensland
Journal name Australian Journal of Entomology   Check publisher's open access policy
ISSN 1326-6756
Publication date 2010-08
Sub-type Article (original research)
DOI 10.1111/j.1440-6055.2010.00759.x
Volume 49
Issue 3
Start page 221
End page 233
Total pages 13
Place of publication Carlton South, VIC., Australia
Publisher Blackwell Publishing
Collection year 2011
Language eng
Subject C1
9604 Control of Pests, Diseases and Exotic Species
060808 Invertebrate Biology
Formatted abstract
Bactrocera tryoni is a polyphagous fruit fly, originally endemic to tropical and subtropical coastal eastern Australia, but now also widely distributed in temperate eastern Australia. In temperate parts of its range, B. tryoni populations show distinct seasonal peaks driven by changing seasonal climates, especially changing temperature. In contrast to temperate areas, the seasonal phenology of B. tryoni in subtropical and tropical parts of its range is poorly documented and the role of climate unknown. Using a large, historical (1940s and 1950s) fruit fly trapping dataset, we present the seasonal phenology of B. tryoni at nine sites across Queensland for multiple (two to seven) years per site. We correlate monthly trap data for each site with monthly weather averages (temperature, rainfall and relative humidity) to investigate climatic influences. We also correlate observed population data with predicted population data generated by an existing B. tryoni population model. Supporting predictions from climate driven models, B. tryoni did show year-round breeding at most Queensland sites. However, contrary to predictions, there was a common pattern of a significant population decline in autumn and winter, followed by a rapid population increase in August and then one or more distinct peaks of abundance in spring and summer. Mean monthly fly abundance was significantly different across sites, but was not correlated with altitudinal, latitudinal or longitudinal gradients. There were very few significant correlations between monthly fly population size and weather variables (either for the corresponding month or for up to 3 months previously) for eight of the nine sites. For the southern site of Gatton fly population abundance was correlated with temperature. Results suggest that although climate factors may be influencing patterns of B. tryoni population abundance in southern subtropical Queensland, they are not explaining patterns of abundance in northern subtropical and tropical Queensland. In the discussion we focus on the role of other factors, particularly larval host plant availability, as likely drivers of B. tryoni abundance in tropical and subtropical parts of its range.
© 2010 The Authors. Journal compilation © 2010 Australian Entomological Society.
Keyword Dacinae
Population modelling
Queensland fruit fly
Tropical fruit fly
Fruit-flies diptera
Southeast Queensland
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
School of Biological Sciences Publications
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Created: Sun, 12 Sep 2010, 00:07:07 EST