Threshold aphid population density for starting oviposition in Harmonia axyridis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F20%3A10149330" target="_blank" >RIV/00027006:_____/20:10149330 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/20:00116843
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs10526-020-10019-w" target="_blank" >https://link.springer.com/article/10.1007%2Fs10526-020-10019-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10526-020-10019-w" target="_blank" >10.1007/s10526-020-10019-w</a>

Result language
angličtina
Original language name
Threshold aphid population density for starting oviposition in Harmonia axyridis
Original language description
The population density of Eucallipterus tiliae (L.) (Hemiptera: Aphididae) required for initiating oviposition in Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) was established in Tilia cordata Mill. (Dicotyledoneae: Tiliaceae) stands sampled weekly throughout the vegetative seasons of 2017-2019. The number of aphids per leaf area and oviposition in H. axyridis females were determined at each sampling session. Seasonal changes in aphid abundance and the presence of ovipositing females in natural populations varied across years but in all years H. axyridis started oviposition as soon as the aphid density increased above 10.2 aphids per ten sweeps, which equals 1.04 aphids per 100 cm(2) leaf area. These values exceed the threshold aphid density for starting oviposition in Coccinella septempunctata L. (Coleoptera: Coccinellidae), which is 0.40 aphids per 100 cm(2) leaf area. This difference is in line with H. axyridis preference for trees, host plants with complex architecture and hard to search, and preference of C. septempunctata for spatially simple herbs.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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