短刺刺腿食蚜蝇生物学特性的初步研究  

A PRELIMINARY STUDY ON THE BIOLOGY OF ISCHIODON SCUTELLARIS(FAB.)

作　　者：余春仁[1] 潘蓉英[1] 连建新 王文勇 

机构地区：[1]福建农业大学植保系,闽西职业大学,南安县丰州镇

出　　处：《华东昆虫学报》1994年第1期30-37,共8页Entomological Journal of East China

摘　　要：１９９１－１９９３年，在福州郊区调查，短刺刺腿食蚜蝇Ｉｓｃｈｉｏｄｏｎｓｃｕｔｅｌｌｏｒｉｓ为该地区优势种，一年发生６－７代，有越夏年份发生６代，无越夏年份发生７代。主要以蛹在土壤中越冬和越夏。世代历期随温度高低而异，平均气温为１６．６℃时，世代历期长达４５．３天；平均气温２８．２℃时，为２１．１天。幼虫期平均捕蚜量可达２７８．５头，三龄幼虫食量最大，占幼虫期总食量的８０％以上。食蚜蝇姬蜂是造成本区秋季短刺刺腿食蚜蝇种群数量下降的主要原因。The systematic survey on the biology of Ischiodon scutellaris.was conducted in Fuzhou suburbsduring May, 1991-May, 1993. It was discovered that I. scutellaris was the dominant species of natural ene-mies of aphids. It occurred 6-7 generations a year and overwintered and oversummered with the pupae. Theduration of generations varied with temperature. It was 45.3 days and 21.1 days at 16.6℃ and 28.2℃of themean temperature respectively. One predator during larva period could feed on 278.5 aphids on the average.The predatory amount of the 3rd instar larva was at its maximum and more than 80%of that during larvaperiod. The major factor that decreased the population of I.scutellaris was Ichncumons.

关 键 词：越夏 世代 幼虫期 越冬 生物学特性 秋季 发生 种群数量 食量 初步研究 

分 类 号：Q969.463.8[生物学—昆虫学] S763[农业科学—森林保护学]