Efeito da idade das fêmeas e de fatores ambientais sobre a reprodução do predador Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) - DOI: 10.4025/actascibiolsci.v25i2.2014

Luciano Pacelli Medeiros Macedo; Brigida Souza; Cesar Freire Carvalho; Carvalho Carlos Ecole; Marcio Marcos Goussain

doi:10.4025/actascibiolsci.v25i2.2014

**Effect of female age and environmental factors on reproduction of the predator Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae)** - DOI: 10.4025/actascibiolsci.v25i2.2014

Authors

Luciano Pacelli Medeiros Macedo USP Author
Brigida Souza UFLA Author
Cesar Freire Carvalho UFLA Author
Carvalho Carlos Ecole UFLA Author
Marcio Marcos Goussain UFLA Author

DOI:

https://doi.org/10.4025/actascibiolsci.v25i2.2014

Keywords:

Insecta, crisopídeo, algodoeiro, controle biológico, reprodução

Abstract

The biotic and abiotic factors affect the reproductive potential of insects. Thus, the effects of female age and environmental factors on reproduction of Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) were studied. Adults of the predator were reared in "PVC" cages, closed in the upper portion with a thin mesh, organdie, placed on cotton plants at a greenhouse. The largest production of eggs by female (87.7 eggs) occurred with 49 days and the smallest (32.2 eggs) with 63 days of female age. The remating occurred after the exhaustion of spermatic reservations, starting on 28th day. The fecundity of C. externa females increased with elevation of the relative humidity of air. It was also verified a fast embryonic development with increase of temperature and female age. All these results supply subsidies for knowledge of the reproduction of C. externa in cotton system

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Published

2008-04-17

Issue

Vol. 25 No. 2 (2003)

Section

Biology Sciences

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How to Cite

Effect of female age and environmental factors on reproduction of the predator Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) - DOI: 10.4025/actascibiolsci.v25i2.2014. (2008). Acta Scientiarum. Biological Sciences, 25(2), 309-313. https://doi.org/10.4025/actascibiolsci.v25i2.2014