Regulation of mating behavior by nutrition and the corpus allatum in both male and female Phormia regina (Meigen)

  • Yin C
  • Qin W
  • Stoffolano J
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Both dietary protein and the corpus allatum (CA) were required for normal mating behavior in both male and female black blow fly, Phormia regina (Meigen). Nutrition (protein diet) activated the CA in both sexes. More than 10 mg of dietary liver was required for each male to result in 80% insemination of females, while 20 mg of liver was required for each female to allow 78% of females to become inseminated. Between 10 to 15 mg of protein meal (i.e., liver) was required to activate sexual receptivity in 71% of the females, while between 15 to 20 mg of liver was needed to support full oocyte development in 70% of the females (Yin, C.-M., Zou, B.-X., Li, M.-F., Stoffolano, J.G., Jr. 1994. Discovery of a midgut peptide hormone which activates the endocrine cascade leading to oogenesis in Phormia regina Meigen. Journal of Insect Physiology, 40, 283-292). Allatectomy suppressed mating behavior more than 2-fold in both sexes. Topical application of 10 μg of S-methoprene (a juvenile hormone analogue) at 12 h after the onset of liver feeding restored sexual activity of both allatectomized males and females. Incidence of successful insemination increased as the oocyte development progressed. Ovariectomy suppressed sexual receptivity more than 3-fold in liver-fed females. Thus, in addition to nutrition and the CA, ovaries and their developmental status can also affect the sexual receptivity in female P. regina.

Author-supplied keywords

  • Allatectomy
  • Blow fly
  • Dietary protein
  • Ecdysteroid
  • Insemination
  • Juvenile hormone
  • Methoprene
  • Oogenesis
  • Ovary

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  • Chih Ming Yin

  • Wen Hong Qin

  • John G. Stoffolano

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