Japanese Journal of Applied Entomology and Zoology
Online ISSN : 1347-6068
Print ISSN : 0021-4914
ISSN-L : 0021-4914
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Volume 44, Issue 1
Displaying 1-9 of 9 articles from this issue
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Review
Original Articles
  • Ovipositional Characteristics of Lacewings, Chrysoperla carnea (Stephans) and Chrysopa pallens (Rambur) (Neuroptera: Crysopidae) in Field
    Mitsuru Nakamura, Hisashi Nemoto, Hiroshi Amano
    Subject area: Others
    2000 Volume 44 Issue 1 Pages 17-26
    Published: 2000
    Released on J-STAGE: October 31, 2002
    DOIhttps://doi.org/10.1303/jjaez.2000.17
    JOURNAL FREE ACCESS
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    The oviposition characteristics of two species of lacewings, Chrysoperla carnea (Stephans) and Chrysopa pallens (Rambur), were investigated in pear, eggplant and cucumber fields as well as on locust trees at Saitama Horticultural Experiment Station (Kuki City) in 1996. The habitat and oviposition site of C. pallens adults showed a closer association to aphid populations than C. carnea. Consequently, many eggs of the former species were deposited where aphids were abundant in the eggplant and pear fields. On the other hand, the distribution pattern of C. carnea eggs in the eggplant field was a weakly aggregated distribution. The spatial association of eggs of C. carnea and C. pallens and their prey (aphids, spider mites and thrips) in the eggplant field was analyzed by interspecies mean crowding. The distribution of C. carnea eggs showed a weak correlation to aphids, whereas C. pallens eggs had a positive correlation with aphids. The developmental times and rate of C. carnea and C. pallens were observed on three prey species: Tetranychus urticae Koch (green-form), Aphis craccivora Koch, and Uroleucon nigrotuberculatum (Olive) to determine the food habits of their larvae. When spider mites were provided as prey, C. carnea survived and developed well, but C. pallens did not develop to adults.
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  • Preventing Damage to Buds of Kiwifruit by Brown-Eared Bulbuls, Hypsipetes amaurotis, Using Distress Call
    Kazuo Nakamura, Masatoshi Tsuchiya
    Subject area: Others
    2000 Volume 44 Issue 1 Pages 27-33
    Published: 2000
    Released on J-STAGE: October 31, 2002
    DOIhttps://doi.org/10.1303/jjaez.2000.27
    JOURNAL FREE ACCESS
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    To prevent Brown-Eared Bulbuls Hypsipetes amaurotis damaging kiwifruit buds, their distress call (DC) was played in a kiwifruit orchard during early spring in 1992, 1993 and 1995. The number of bulbuls in the orchard decreased during DC playback. At trees near the speakers, damage in 1992 and 1993 was reduced to levels acceptable to growers. However, in 1995, when damage was generally greater throughout the orchard, severe damage occured even close to the speakers. Damage was always severe at sites close to roosts or perches. In 1995, we also observed Japanese Waxwings Bombycilla japonica damaging the buds. This is the first report of damage to kiwifruit buds by Brown-Eared Bulbuls and Japanese Waxwings.
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  • New Trap for Survey of Species Structure and Seasonal Dynamics of Phytoseiid Mites on Japanese Pear Trees (Acari: Phytoseiidae)
    Akira Koike, Hisashi Nemoto, Hiroshi Amano
    Subject area: Others
    2000 Volume 44 Issue 1 Pages 35-40
    Published: 2000
    Released on J-STAGE: October 31, 2002
    DOIhttps://doi.org/10.1303/jjaez.2000.35
    JOURNAL FREE ACCESS
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    A simple new trap (Phyto trap) was invented to increase the trapping efficiency of phytoseiid mites in a pear field. The trap was made of woolen yarn, hook and loop fasteners vinyl tape. It successfully trapped many live phytoseiid mites alive when used on Japanese pear trees. Trapping efficiency was also evaluated by comparison with conventional observations of leaves, confirming the trap usefulness. Ten known species and one newly recorded species of phytoseiid mites belonging to two genera were trapped on the pear trees. The seasonal dynamics of each species were clarified. Amblyseius tsugawai was most abundant throughout the seasons. Both A. eharai and A. paraki were also abundant, but showed some seasonal fluctuations. Amblyseius eharai became abundant following an increase in the Panonychus citri population, but A. paraki abundance seemed to have no relation to the populations of prey mites.
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