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Thermal tolerance and potential distribution of Carvalhotingis visenda (Hemiptera: Tingidae), a biological control agent for cat's claw creeper, Macfadyena unguis-cati (Bignoniaceae)

Dhileepan, K. and Bayliss, D. and Treviño, M. (2010) Thermal tolerance and potential distribution of Carvalhotingis visenda (Hemiptera: Tingidae), a biological control agent for cat's claw creeper, Macfadyena unguis-cati (Bignoniaceae). Bulletin of Entomological Research, 100 (2). pp. 159-166.

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Article Link(s): http://dx.doi.org/10.1017/S0007485309006932

Publisher URL: http://journals.cambridge.org

Abstract

The specialist tingid, Carvalhotingis visenda, is a biological control agent for cat's claw creeper, Macfadyena unguis-cati (Bignoniaceae). Cat's claw creeper is an invasive liana with a wide climatic tolerance, and for biological control to be effective the tingid must survive and develop over a range of temperatures. We evaluated the effect of constant temperatures (0-45°C) on the survival and development of C. visenda. Adults showed tolerance for wider temperature ranges (0-45°C), but oviposition, egg hatching and nymphal development were all affected by both high (>30°C) and low (<20°C) temperatures. Temperatures between 20°C and 30°C are the most favourable for adult survival, oviposition, egg hatching and nymphal development. The ability of adults and nymphs to survive for a few days at high (40°C and 45°C) and low (0°C and 5°C) temperatures suggest that extreme temperature events, which usually occur for short durations (hours) in cat's claw creeper infested regions in Queensland and New South Wales states are not likely to affect the tingid population. The potential number of generations (egg to adult) the tingid can complete in a year in Australia ranged from three to eight, with more generations in Queensland than in New South Wales.

Item Type:Article
Additional Information:© Cambridge University Press.
Keywords:Thermal tolerance; potential distribution; weed; biological control; Australia.
Subjects:Science > Zoology > Invertebrates > Insects
Science > Invasive Species > Plants > Biological control
Deposited On:19 Aug 2010 03:45
Last Modified:05 Sep 2016 04:08

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