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Effects of diet, temperature and photoperiod on development and survival of the bigeyed bug, Geocoris lubra

Mansfield, S. and Scholz, B. and Armitage, S. and Johnson, M.-L. (2007) Effects of diet, temperature and photoperiod on development and survival of the bigeyed bug, Geocoris lubra. BioControl, 52 (1). pp. 63-74.

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Article Link(s): http://dx.doi.org/10.1007/s10526-006-9011-y

Publisher URL: http://www.springerlink.com

Abstract

Bigeyed bugs (Geocoris spp., Hemiptera: Geocoridae) are common predators in Australian agricultural crops yet the development and reproductive biology of Australian geocorids has not been described before. Here we present the effects of diet, temperature and photoperiod on the development and survival of Geocoris lubra Kirkaldy from egg to adult. Nymphal survival of G. lubra reared on live aphids (Aphis gossypii Glover) was very low but improved slightly on a diet of Helicoverpa armigera (Hübner) eggs. Development was faster and nymphal survival improved significantly at 27°C compared with 25°C. Further investigation at 27°C showed photoperiod influenced development time, but not survival of immature G. lubra. Development time was significantly longer at 10L:14D. Fecundity of first generation G. lubra was not affected by photoperiod, although egg viability was greater at 12L:12D.

Item Type:Article
Additional Information:© Springer Science+Business Media, Inc.
Keywords:Australia; conservation biological control; Geocoridae; Hemiptera; predation; rearing methods.
Subjects:Science > Zoology > Invertebrates > Insects
Deposited On:24 Feb 2009 06:17
Last Modified:18 Apr 2011 05:41

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