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2 documents found tagged aphid [X]
  • Title
    A report on occurrence of aphidophagous predators of Aphis odinae (van der Goot) (Hemiptera: Aphididae) in cashew ecosystem from Goa, India
    Type
    Journal Article
    Description
    The aphid, Aphis odinae(Van der Goot) (Hemiptera: Aphididae) is a polyphagous, occasional insect pest of cashew. A field survey was conducted from 2014 to 2015 in cashew plantations to record the incidence of aphid and its predators. Periodical sampling revealed, the occurrence of six species of aphidophagous predators comprising three species of coccinellids, viz., Scymnus castaneus Sicard, Cheilomenes sexmaculata (Fabricius) and Pseudaspidimerus flaviceps (Walker) and three species of syrphids, viz., Paragus serratus (Fabricius), Dideopsis aegrota (Fabricius) and Ischidon scutellaris (Fabricius) were found predating on A. odinae. All the immature stages of predators were found predating on first, second, third and fourth instars of the aphid. Among the coccinellids, the dominant species were S. castaneus (4.26 grubs/nut) followed by C. sexmaculata (0.42 grubs/leaf) and P. flaviceps (0.14 grubs/nut). Of the syrphids, P. serratus 2.39 larvae/nut was the major predator. The species D. aegrota (1.2 larvae/leaf) and I. scutellaris (0.5 larvae/nut) were recorded as minor predators. Seasonal abundance of predators was synchronized with the aphid with a maximum occurrence during February 2015. The aphid population gradually reduced from April onwards due to the voracious feeding activity of the predators. The study concluded that the aphidophagous predators, viz., coccinellids and syrphids play a major role in managing the aphid A. odinae in cashew and could be encouraged for augmentation and conservation of these predators in a cashew based ecosystem.
    Attribution
    Ramasamy Maruthadurai & Narendra Pratap Singh, Journal of Threatened Taxa, Vol 9, No 2 (2017); pp. 9858–9861 http://dx.doi.org/10.11609/jott.2435.9.2.9858-9861
  • Title
    Aphids of ornamental plants and winter vegetables and their aphidiine parasitoids (Hymenoptera: Braconidae) in Aligarh region, Uttar Pradesh
    Type
    Journal Article
    Description
    A survey was conducted in Aligarh District of Uttar Pradesh, India. A total of 14 pest aphid were found infesting 13 ornamental plants and 14 winter vegetables of the area. They were categorized based on injury status. Seven species of aphidiine parasitoids viz., Aphidius colemani Viereck, Aphidius smithi Subba Rao & Sharma, Binodoxys indicus (Subba Rao & Sharma), Diaeretiella rapae (M’Intosh), Lipolexis gracilis Foerster, Lipolexis oregmae (Gahan), Lysaphidus qadrii Shujauddin were found infesting different aphid species.
    Attribution
    Rafi U., Usmani M.K., Akhtar M.S. (2010). Journal of Threatened Taxa 9(2) pp. 1162-1164; doi:10.11609/JoTT.o2399.1162-4