Lọc theo danh mục
  • Năm xuất bản
    Xem thêm
  • Lĩnh vực
liên kết website
Lượt truy cập
 Lượt truy cập :  29,857,755
  • Công bố khoa học và công nghệ Việt Nam

34.33.19

Động vật học

Nguyễn Thị Phương Thảo, Amano Hiroshi, Tạ Huy Hùng(1)

Sự tiếp nhận tinh trùng và đẻ trứng của nhện cái Neoseiulus californicus (McGregor) (Acari: Phytoselidae) có quá trình giao phối gián đoạn, giao phối một lần và giao phối nhiều lần tại các mức nhiệt độ khác nhau

Sperm reception and egg production of mating-interrupted, single-mated, and multiple-mated females of Neoseiulus califomicus (McGregor) (Acari: Phytoseiidae) at different temperatures

Báo cáo khoa học Hội nghị Côn trùng học quốc gia lần thứ 7

2011

285-295

Spenn transfer during the mating process and subsequent egg production were observed in a predaceous mite species, Neoseiulus californicus, at 18,25,30, and 35°C with a photoperiod of 16L:8D. Mating was disrupted at predetennined time points, and female egg production was counted daily. In addition, other females were allowed to mate repeatedly with new males throughout the oviposition period and egg production was observed. To quantify the volume of sperm transferred from males to females, mated females were sacrificed and mounted immediately after copulation, and the diameter of the spennatophore within the female spennatheca was measured. The results indicated that both spenn volume and egg production increased with mating duration at all temperatures. However, the reception of a spermatophore in the female spennatheca and the subsequent female egg production began at an earlier stage of copulation (after a shorter mating duration) under higher temperatures. Multiple - mated females often had more than one spermatophore in their spennaiheca, which was never observed in single - mated females, and the former laid more eggs than the latter at all temperatures. However, total egg production by mu~tiple - mated females did not differ at 25, 30, and 35°C. The reproductive characteristics of N. californicus and their significance to the mites life history are discussed from the perspective of biological control of one of their primary prey species, spider mites.

TTKHCNQG, Vd 1133/2014