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Factors affecting the distribution of a predatory mite on greenhouse sweet pepper
Year:
2007
Source of publication :
Experimental and Applied Acarology
Authors :
Alchanatis, Victor
;
.
Klitman, Sophia
;
.
Palevsky, Eric
;
.
Weintraub, Phyllis
;
.
Volume :
42
Co-Authors:
Weintraub, P.G., Department of Entomology, Gilat Research Center, D.N. Negev 85280, Israel
Kleitman, S., Department of Entomology, Gilat Research Center, D.N. Negev 85280, Israel
Alchanatis, V., Department of Agricultural Engineering, Agricultural Research Organization, Bet Dagan, Israel
Palevsky, E., Department of Entomology, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Facilitators :
From page:
23
To page:
35
(
Total pages:
13
)
Abstract:
The predatory mite Neoseiulus cucumeris is used for biological control of phytophagous mites and thrips on greenhouse cucumber and sweet pepper. In a previous study, N. cucumeris provided effective control of broad mite but was only rarely found on the sampled leaves, raising questions about the factors affecting N. cucumeris distribution. To determine the distribution of N. cucumeris, leaves of pepper plants were sampled three times per day: just after sunrise, at noon and just before sunset for two years and throughout a 24 h period in one year. The presence of other mites and insects was recorded. Biotic (pollen) and abiotic (temperature, humidity) factors were monitored from the three plant levels. The effect of direct and indirect sunlight on the mites was assessed. N. cucumeris was found primarily in flowers; however, the mite's distribution was affected by other predators (intraguild predation); in the presence of the predatory bug Orius laevigatus virtually no mites occurred in the flowers. Whereas temperature and humidity varied from the top to the lower level of the plants, apparently neither these factors nor the presence of pollen outside the flowers influenced mite distribution. N. cucumeris was found to be negatively phototropic; therefore N. cucumeris were pre-conditioned to light by rearing under light conditions for 4 months before being released. The light-reared mites were initially more numerous during the noon sampling period, however, rearing conditions caused only a temporary and non-significant change in distribution. © 2007 Springer Science+Business Media B.V.
Note:
Related Files :
Acari
Animals
Cucumis sativus
humidity
Israel
light
pollen (external)
predation
temperature
Show More
Related Content
More details
DOI :
10.1007/s10493-007-9077-y
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29898
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:50
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Scientific Publication
Factors affecting the distribution of a predatory mite on greenhouse sweet pepper
42
Weintraub, P.G., Department of Entomology, Gilat Research Center, D.N. Negev 85280, Israel
Kleitman, S., Department of Entomology, Gilat Research Center, D.N. Negev 85280, Israel
Alchanatis, V., Department of Agricultural Engineering, Agricultural Research Organization, Bet Dagan, Israel
Palevsky, E., Department of Entomology, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Factors affecting the distribution of a predatory mite on greenhouse sweet pepper
The predatory mite Neoseiulus cucumeris is used for biological control of phytophagous mites and thrips on greenhouse cucumber and sweet pepper. In a previous study, N. cucumeris provided effective control of broad mite but was only rarely found on the sampled leaves, raising questions about the factors affecting N. cucumeris distribution. To determine the distribution of N. cucumeris, leaves of pepper plants were sampled three times per day: just after sunrise, at noon and just before sunset for two years and throughout a 24 h period in one year. The presence of other mites and insects was recorded. Biotic (pollen) and abiotic (temperature, humidity) factors were monitored from the three plant levels. The effect of direct and indirect sunlight on the mites was assessed. N. cucumeris was found primarily in flowers; however, the mite's distribution was affected by other predators (intraguild predation); in the presence of the predatory bug Orius laevigatus virtually no mites occurred in the flowers. Whereas temperature and humidity varied from the top to the lower level of the plants, apparently neither these factors nor the presence of pollen outside the flowers influenced mite distribution. N. cucumeris was found to be negatively phototropic; therefore N. cucumeris were pre-conditioned to light by rearing under light conditions for 4 months before being released. The light-reared mites were initially more numerous during the noon sampling period, however, rearing conditions caused only a temporary and non-significant change in distribution. © 2007 Springer Science+Business Media B.V.
Scientific Publication
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