四川农业大学学报 ›› 1986, Vol. 4 ›› Issue (02): 231-238.doi: 10.16036/j.issn.1000-2650.1986.02.007

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枯叶蛾平腹小蜂(Anastatus sp.)生物学特性的观察

周祖基1, 张务民1, 杨春平1, 吴猛耐2, 谭林2   

  1. 1 四川农业大学林学系;
    2 四川省永川森林病虫防治试验站
  • 收稿日期:1985-07-15 出版日期:1986-06-30 发布日期:2017-04-15

BIONOMICS OF ANASTATUS SP., AN EGG ENDOPARASITE OF PINE CATERPILLAR, DENDROLIMUS PUNCTATUS(WALKER)

Zhou Zuji1, et al1   

  1. Sichuan Agricultural University, Ya'an, Siehuan, China
  • Received:1985-07-15 Online:1986-06-30 Published:2017-04-15

摘要: 枯叶蛾平腹小蜂是马尾松毛虫卵寄生蜂的优势种类。在林内一年可发生2-4代,室内可繁殖六代,以预蛹在寄主卵内越冬,次年四月中、下旬开始羽化。在寄主卵内发育历期为18-22天,各虫态历期为;卵2-3天,幼虫(包括预蛹)7-8天,蛹9-11天。每一寄主卵内只可发育出一头蜂。雌蜂寿命在给食时平均为47.3天。野外调查雌雄性比为1.27:1;室内繁蜂以柞蚕卵作为寄主则雌性有增高的现象。室内小群体繁蜂的平均产卵量为:越冬代36.5粒,第一代67.9粒,第二代52.3粒。以柞蚕作寄主雌蜂产卵量较高,繁蜂群体增大时,产卵量和日产卵量均有下降趋势。经测算,在卵内发育起点和有效积温分别为14.7℃和242.5日度。

关键词: 马尾松毛虫, 枯叶蛾科, 寄生蜂

Abstract: Anastatus sp. is an important egg parasite of pine caterpillar in Sichuan province. It has 2-4 generations per year in the forest, but may produce 6 generations in the laboratory. It overwinters in the eggs of its host as the prepupa. The duration of the life cycle is 18-22 days, which include the egg stage of 2-3 days, larval stage 7-8 days and pupal stage 9-11 days. From each host egg would emerge only a single adult. The life span of the female wasps fed with honey solution averages 47.3 days. The sex ratio was 1.27:7 in the field, as would be increased if eggs of Chineses oak silkworm, Antheraea pernyi Gu'erin M'eneville are used to rear it. The average numbers of eggs laid by a female adult in the laboratory are different with different generations:the overwintering generation, lays an average of 36.5 eggs; the first generation, 67.6 eggs; and the second, 52.3 eggs. When eggs of Chineses oak silkworm are used to rear it, it lays more eggs than the one emerging from a pine caterpillar eggs. The threshold development and the effective thermal summation of this parasite wasp within its host egg are found to be 14.7℃ and 242.5 day degrees respectively.

Key words: DENDROLIMUS PUNCTATUS, LASIOCAMPIDAE, PARASITIC BEES