Morphological Observation of the Female Reproductive System and Ovariole of Peristenus spretus (Hymenoptera: Braconidae)

doi:10.16409/j.cnki.2095-039x.2019.04.011

Abstract

Abstract: The structure of female reproductive system, ovarian development, oogenesis, egg ultrastructure, and ovariole growth under different temperatures in Peristenus spretus Chen et van Achterberg were observed using optical microscopy and transmission electron microscopy. The results showed that:1) The reproductive system of P. spretus consisted of a pair of ovaries, two oviducts and a median oviduct. 2) In the newly emerged females (1-3 d), the ovary had fewer mature eggs and the ovarioles contained a large number of oogonia cells filled with rich lipid droplets. In middle-aged femals (5-11 d), mitochondria and Golgi gradually emerged with the degradation and absorption of fat bodies. These organelles contained oocyte and nurse cells without cell membrane. 3) The number of matured oocytes and eggs in different ages was significantly different, the total number of eggs in each ovariole was 20.7 at 23℃, significantly more than that (18.65) at 15℃.

Key words: Peristenus spretus, ovarian development, ovarioles

CLC Number:

S476.3

XIA Yayun, TIAN Miaomiao, LI Mingming, MAO Jianjun, CAI Ducheng, LUO Shuping. Morphological Observation of the Female Reproductive System and Ovariole of Peristenus spretus (Hymenoptera: Braconidae)[J]. Chinese Journal Of Biological Control, 2019, 35(4): 517-526.

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