Revista Brasileira de Entomologia (2008) 52, 463-466

Luis Gustavo Amorim Pessoa and Sérgio de Freitas (2008)
Potencial reprodutivo de Chrysoperla externa (Hagen) (Neuroptera, Chrysopidae) em função do número de indivíduos por unidade de criação
[Reproductive capacity of Chrysoperla externa (Hagen) (Neuroptera, Chrysopidae) in function of the number of individuals per unit of rearing]
Revista Brasileira de Entomologia 52 (3), 463-466
Abstract: This work was carried out to investigate the reproductive potential of Chrysoperla externa subjected to different densities per rearing unit. Adults of the F₄ offspring were kept at 25 ± 1°C, RH 70 ± 10% and 12 h photophase. It was used the following densities per rearing unit (10 cm of diameter by 23 cm of height, and volume of 1650 cm³): 1 male: 3 female, 2 males: 6 females, 3 males: 9 females and 4 males: 12 females. It was evaluated the pre-oviposition period, the daily and total oviposition per female and per rearing unit, the percentage of viable and infertile eggs percentage and the exploitation index per female and per rearing unit. The density 4 males: 12 females presented better exploitation when compared to the other densities thus equalizing the low values obtained for the mean and total egg laying per female.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Sérgio de Freitas

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
rearing/culturing/mass production

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Chrysoperla externa (predator)