کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4493280 1623641 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evidence of intraguild predation on a key member of the cotton predator complex
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Evidence of intraguild predation on a key member of the cotton predator complex
چکیده انگلیسی

It is well known that most arthropod predators are generalist feeders and consume a wide range of prey species. As such, intraguild predation (IGP) is prevalent in virtually every agroecosystem. A polymerase chain reaction (PCR) assay was developed to examine the gut contents of predators that inhabit Arizona cotton for the presence of the DNA of green lacewing, Chrysoperla carnea, a common lower-tiered member of the predator community. A total of 1440 predators were captured using both a sweep net and whole plant sampling method. The gut content analyses revealed that over 10% of the predator population contained C. carnea DNA in their gut. Of these, IGP on C. carnea was detected almost twice as frequently in predaceous insects as spiders. The assassin bugs frequently encountered in cotton, Zelus renardii and Sinea confusa and orb-weaving spiders (Araneidae) were frequently identified as apex predators of C. carnea. These data provide a better understanding of predator–predator interactions in cotton and highlight areas for future research. That is, more thorough studies are needed to quantify prey selection of apex predators. Apex predators that frequently engage in IGP could be potentially antagonistic to the biological services rendered by the entire predator community.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Webs - Volume 4, September 2015, Pages 8–13
نویسندگان
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