Development and thermal requirements of the Nearctic predator Geocoris punctipes (Hemiptera: Geocoridae) reared at constant and alternating temperatures and fed on Anagasta kuehniella (Lepidoptera: Pyralidae) eggs
| Autor: | V. H. P. Bueno, J.C. van Lenteren, F. C. Montes, A. M. Calixto |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
biological-control agents
insidiosus say hemiptera hemiptera generalist predator biological control geocoridae pyralidae survival immature developmental time anagasta kuehniella Animal science Botany eggs orius-insidiosus geocoris punctipes Laboratory of Entomology lygaeidae Predator mass production heteroptera Pyralidae gelechiidae Larva biology life-history Orius insidiosus anthocoridae biology.organism_classification Lygaeidae PE&RC Laboratorium voor Entomologie tuta absoluta thermal constant QL1-991 Insect Science Instar Tuta absoluta insect prey PEST analysis lepidoptera Zoology |
| Zdroj: | European Journal of Entomology, 111(4), 521-528 ResearcherID European Journal of Entomology, Vol 111, Iss 4, Pp 521-521 (2014) European Journal of Entomology 111 (2014) 4 |
| ISSN: | 1210-5759 |
| Popis: | Knowledge of the optimal temperatures for development and survival of biological control agents is essential for efficient mass-rearing and introduction of natural enemies in augmentative biological control programs. We studied the effect of constant and alternating temperatures on development and survival of immature stages and the sex ratio at emergence of adults of the Nearctic generalist predator Geocoris punctipes (Say). We also determined its thermal requirements. They were reared in climatic chambers at alternating (21/11°C, 24/18°C, 27/21°C and 30/26°C ± 1°C) and constant temperatures (16.8°C, 21.5°C, 24.5°C and 28.3°C ± 1°C), RH 70 ± 10% and a 14 h photophase. Survival and development of G. punctipes were the same when reared at constant and alternating temperatures. Five instars were recorded in all temperature regimes. The duration of the egg stage and each instar, as well as that of total larval development were longer, and larval survival lower when reared at 16.8°C, 21/11°C, 21.5°C and 24/18°C than at 24.5°C, 27/21°C, 28.3°C and 30/26°C. The optimal temperature range for development and survival of G. punctipes is 24.5°C to 30°C, its lower development threshold temperature is 13.5°C and its thermal constant 295.9 DD. Sex ratios were not significantly different from 1 : 1 male : female ratio in all temperature regimes. There is an excellent match between the temperature regimes at which the prey Tuta absoluta (Meyrick) and predator G. punctipes are active, which indicates that this predator will function well in crops where this pest is present. |
| Databáze: | OpenAIRE |
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