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  • Temporal and within-plant distribution of the parasitoid and predator complexes associated with Acyrthosiphon pisum and A. kondoi (Homoptera: Aphididae) on alfalfa in Japan
  • 作者: Nakashima, Yoshitaka and Akashi, Masako
  • literature id: 35505
  • catalog nub: TPL_NAKASH2005TAWDO13701440
  • 文献库: Taxapad收录文献
  • type: article
  • publication name: Applied Entomology and Zoology
  • publish date: 2005-02-01
  • pages: 137-144
  • volume: 40
  • issue: 1
  • 创建时间: 2021-03-02 15:00:32
  • create by: zxmlmq (admin)
  • comment:

    Seasonal abundance and within-plant distribution of Acyrthosiphon spp. and their natural enemies were investigated on alfalfa in Obihiro, Hokkaido, Japan in 2001. Densities of A. pisum and A. kondoi peaked in early June. Coccinellid and syrphid predators appeared to respond to aphid numbers and were synchronized with aphid populations. Two species of braconid (aphichine) parasitoids (Aphiditts ervi and Praon barbatum) were collected. Parasitism rates for each aphid species were variable through the season, but the estimated number of parasitized aphids reached a peak at the same time as overall aphid densities. After the first harvesting of alfalfa (14 June) aphid densities became very low, and coccinellid and syrphid predators were not found. In contrast to the coccinellid and syrphid predators, the heteropteran predators, Nabis stenoferus and Orius spp. became common during summer. Aphids, immature parasitoids (live parasitized aphids and mummies), Coccinella septempunctata and syrphids occurred more oil the upper parts of alfalfa stems than on the lower parts, but this trend was not found for Hippodamia tredecimpunctata. The temporal and spatial distributions of members of the aphidphagous guild are likely to influence natural enemy-aphid relationships and intraguild interactions. Coccinellidae (Cucujoidea) : Predator Syrphidae (Cyclorrhapha) : Predator Aphidius ervi (Aphidiidae) : Parasite Praon barbatum (Aphidiidae) : Parasite Heteroptera (Hemiptera) : Predator Acyrthosiphon kondoi (Aphidoidea) : Host, Parasite, Prey Acyrthosiphon pisum (Aphidoidea) : Host, Parasite, Prey Nutrition; Diet; Prey; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Ecology; Population dynamics; Predators; Habitat; Man made habitat; Land zones; Palaearctic region; Eurasia; Asia Acyrthosiphon kondoi; Acyrthosiphon pisum; Hymenopteran parasites; Temporal & within-plant distribution of host & parasitoid complex; alfalfa field; Aphidius ervi & Praon barbatum; Plant hosts; Medicago sativa; Population density; Insect predators; Temporal & within-plant distribution of prey & predator complex; Coleoptera, Diptera & Hemiptera; Japan; Hokkaido, Obihiro Aphidius ervi; Praon barbatum; Hemipteran hosts; Temporal & within-plant distribution of host & parasitoid complex; Acyrthosiphon kondoi & Acyrthosiphon pisum; Cultivated land habitat; Alfalfa field; Japan; Hokkaido, Obihiro Coccinellidae; Heteroptera; Syrphidae; Insect prey; Temporal & within-plant distribution of prey & predator complex; Acyrthosiphon (Hemiptera); Population density; Cultivated land habitat; Alfalfa field; Japan; Hokkaido, Obihiro none

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