کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8970788 | 1552157 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Measuring the field dispersal of Aphidius colemani (Hymenoptera: Braconidae)
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
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چکیده انگلیسی
The spatial and temporal dispersal of the aphid parasitoid Aphidius colemani (Hymenoptera: Braconidae) was studied in the field. Dispersal was determined on the basis of mummified Myzus persicae (Hemiptera: Aphididae) aphids on kohlrabi trap plants. Trap plants were arranged equidistantly in circles at distances of 1, 2, 4, 8 and 16Â m from a central release point. Plants were replaced on day 1 and 3 after the release of A. colemani. The pattern of mummified aphids showed that parasitoids moved at least 16Â m within 24Â h after release. Mean numbers of A. colemani mummies per trap plant were low (3.0, 1.8 and 1.1 on days 1, 3 and 5 after release). In most cases dispersal was random with regard to compass direction. Prevailing light to moderate wind speed did not influence dispersal of parasitoids. Released A. colemani remained at the experimental site for at least 3 days.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 107, Issues 2â3, 20 May 2005, Pages 137-143
Journal: Agriculture, Ecosystems & Environment - Volume 107, Issues 2â3, 20 May 2005, Pages 137-143
نویسندگان
Maren Langhof, Rainer Meyhöfer, Hans-Michael Poehling, Achim Gathmann,