کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9486370 | 1329971 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seasonal dynamics of entomopathogenic nematodes of the genera Steinernema and Heterorhabditis as a response to abiotic factors and abundance of insect hosts
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The seasonal dynamics of entomopathogenic nematodes (EPNs) of the genus Steinernema and Heterorhabditis were studied during one season in meadow and oak wood habitats, in the vicinity of Äeské BudÄjovice, Czech Republic. The influences of soil temperature, moisture, and abundance of suitable hosts on EPN dynamics were investigated. The host range of these nematodes, in both habitats was also observed. A total of four EPN species were found in both habitats. Steinernema affine was the dominant species both in oak wood and in meadow. Additionally, the oak wood habitat was inhabited by S. kraussei and S. weiseri; the meadow habitat by Heterorhabditis bacteriophora. The mean abundance of total EPN community was 28,000Â ind./m2 in oak wood and 11,000Â ind./m2 in meadow. The seasonal dynamics of entomopathogenic nematodes in both habitats were characterized by high nematode densities in the beginning of the season, followed by a rapid decrease, and then stabilization. EPN abundances did not show any apparent correlation with soil temperature and moisture, but they were negatively correlated with the abundance of suitable insect hosts. Inter- and intraspecific competition for limited nutrients (hosts) probably played a major role in EPN seasonal dynamics. Broad host range of entomopathogenic nematodes in both habitats was predominantly represented by dipteran and coleopteran larvae. Most common hosts belonged to the families Asilidae, Bibionidae, and Empididae (Diptera), as well as Carabidae and Curculionidae (Coleoptera).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Invertebrate Pathology - Volume 89, Issue 2, June 2005, Pages 116-122
Journal: Journal of Invertebrate Pathology - Volume 89, Issue 2, June 2005, Pages 116-122
نویسندگان
VladimÃr Půža, ZdenÄk MráÄek,