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3 documents found tagged cashew [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
    A first report of egg parasitism in the Tropical Tasar Silkworm Antheraea mylitta (Drury) occurring on cashew
    Type
    Journal Article
    Description
    The present study has documented egg parasitism in Tropical Tasar Silkworm for the first time. The parasitoid is Anastatus leithi (Walker) belonging to Eupelmidae family. It is a solitary koinobiont endoparasitoid, emerges out as adults from the tasar eggs in 17-20 days during August- September. The parasitism rate was recorded at 11.90 percentage.
    Attribution
    K. Vanitha & S. Santhosh, Journal of Threatened Taxa, Vol 8, No 7 (2016); pp. 9045–9047 http://dx.doi.org/10.11609/jott.2456.8.7.9045-9047
  • Title
    A report on the occurrence of eulophid parasitoids on the Cashew Leaf Miner Acrocercops syngramma Meyrick (Insecta: Lepidoptera: Gracillariidae)
    Type
    Journal Article
    Description
    Surveys were conducted from 2011 to 2015 in cashew plantations to document the parasitoids of cashew leaf miner. Three eulophid parasitoids, viz., Chrysocharis sp., Closterocerus sp. and Aprostocetus sp. were recorded for the first time as parasitoids on the larvae of Cashew Leaf Miner, Acrocercops syngramma Meyrick (Lepidoptera: Gracillariidae).  Among the parasitoids, Chrysocharis sp. was dominant recording 99.0 % abundance.  The parasitism of leaf miner larvae was observed from September onwards, which reached its peak during November coinciding with the population of leaf miner larvae.  Chrysocharis sp. was found to be a solitary parasitoid, completing its life cycle within the mine of leaf miner and emerging as an adult.  Parasitization was noticed only on the third and fourth instar leaf miner larvae but not on the first and second instar larvae. In cashew plantations, leaf miner parasitism ranged from 37 to 58% by Chrysocharis sp.  
    Attribution
    Vanitha Kaliaperumal (2015). Journal of Threatened Taxa 12(7) pp. 7933-7936; doi:10.11609/jott.2383.7933-7936