Revista Brasileira de Entomologia (2001) 45, 1-5

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Adrían J. Molina-Rugama, José C. Zanuncio, Eloisio Vinha and Francisco S. Ramalho (2001)
Daily rate of egg laying of the predator Podisus rostralis (Stål, 1860) (Heteroptera, Pentatomidae) under different feeding intervals
Revista Brasileira de Entomologia 45 (1), 1-5
Abstract: Daily rate of egg laying and survival of the predatory bug Podisus rostralis (Stål) (Heteroptera, Pentatomidae) were evaluated under laboratory conditions (25 ± 2°C, 70 ± 10% RH and 12 h photophase). Females of this predator were fed with five larvae of Tenebrio molitor L. (Coleoptera, Tenebrionidae) for periods of 24 h every one, two, four, eight and 16 days. Females of P. rostralis were able to reproduce at different feeding intervals. However, the total number of egg deposited by female was significantly affected by feeding regimen. Females of this predator fed every one, two and four days laid more eggs than those fed every eight and 16 days. Survival of P. rostralis females was not affected by feeding regimen. These results suggest that this predator is able to survive during periods of food scarcity by reducing reproduction activity. On the other hand, daily rate of egg laying by females of this predator was adequate up to around day 50. This indicates that P. rostralis should be released and substituted by others after this period in order to maintain a higher daily egg production in mass rearing facilities.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Francisco de Sousa Ramalho, José Cola Zanuncio

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Podisus rostralis (predator)