Position: Home > Articles > GROWTH AND DEVELOPMENT OF MUGWORT LOOPER [ASCOTIS SELENARIA (SCHIFER-MULER ET DENIS)] AND DETERMINATION OF THE LOSSES CAUSED BY IT
Newsletter of Sericultural Science
1997
(2)
15-19
青尺蠖生长发育特性及危害损失测定
作 者：
张建强;姚艳
单 位：
西南农业大学蚕桑丝绸学院
关键词：
青尺蠖;生长发育特性;危害损失
摘 要：
青尺蠖Ascolis selenaria(Schiffer-miiler et Denis)乃是桑树害虫之一.在四川地区分布较为普遍.本试验测定了温湿度与青尺蠖生长发育的关系,高温多湿促进青尺蠖生长发育加快,历期缩短,生命率降低,青尺蠖幼虫龄期数大多数为4龄,少数5龄.平均每头青尺哎幼虫食桑面积为17920±3940mm~2,折合为食桑量为3074.35±621.77mg,在总食桑量中,4龄食叶量所占比例最大,达90%,而3龄食桑量增长倍数最大,为2龄的12倍.故防治青尺蠖的适期为幼龄幼虫期(1~2龄).
译 名：
GROWTH AND DEVELOPMENT OF MUGWORT LOOPER [ASCOTIS SELENARIA (SCHIFER-MULER ET DENIS)] AND DETERMINATION OF THE LOSSES CAUSED BY IT
作 者：
Zhang Jianqiang Yao Yan(Sericulture College, Southwest Agricultural University, Chongqing 630716 )
关键词：
Mugwort looper Ascotis selenaria Growth and devlopmentLosses and damage
摘 要：
In an experiment, mugwort loopers 〔Ascotis selenaria (Schiffer-muler et Denis)〕. aninsect pest attacking mulberry trees and extensively distributed in Sichuan province. werereared in laboratory and their growth and development were observed. High temperatureor humidity was found to accelerate the growth and development of the pest, shorten itsgrowth duration and reduce its survival rate. Most larvae went through four instars beforecocooning, with only 6. 9% of the surviving larvae having the fifth instar stage. The average consumption of mulberry leaves per larva was 17920±3940 mm2, or 3074. 35±621. 77mg. The larvae consumed most mulberry leaves at their 4th instar stage, accounting for90 % of the total leaf consumption. Mulberry leaf consupmtion by the larvae rose mostsharply at the 3rd instar stage, being 12 times that at the 2nd instar stage. The optimumtime for the control of the pest is, therefore, the early growth stages (the 1st and the 2ndinstars ) of the larvae.
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