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Regulatory Pathways Controlling Female Insect Reproduction.

Sourav Roy1, Tusar T Saha1, Zhen Zou2

  • 1Department of Entomology, Institute for Integrative Genome Biology, and Center for Disease Vector Research, University of California, Riverside, California 92521, USA; email: sourav.roy@ucr.edu , tusar.saha@ucr.edu , alexander.raikhel@ucr.edu.

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|October 24, 2017
PubMed
Summary

Female insect reproduction relies on vitellogenin synthesis and uptake, regulated by juvenile hormones, ecdysteroids, and nutritional signaling. This review explores these molecular pathways, including microRNAs, in insect reproduction.

Keywords:
HemimetabolaHolometabolaecdysteroidsjuvenile hormonemicroRNAtarget of rapamycin

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Area of Science:

  • Endocrinology
  • Molecular Biology
  • Reproductive Biology

Background:

  • Vitellogenin synthesis and oocyte uptake are crucial for insect female reproduction.
  • Hormonal regulation involves juvenile hormones and ecdysteroids, with variations across insect orders.
  • Nutritional signaling pathways, mediated by neuropeptides, also play a significant role.

Purpose of the Study:

  • To review the molecular mechanisms regulating female insect reproduction.
  • To elucidate the roles of juvenile hormones, ecdysteroids, and nutritional signaling.
  • To incorporate the influence of microRNAs in reproductive regulation.

Main Methods:

  • Literature review of molecular studies within the past decade.
  • Analysis of hormonal and nutritional signaling pathways.
  • Examination of regulatory roles of microRNAs.

Main Results:

  • Juvenile hormones generally act as gonadotropins, but ecdysteroids are key in some insect groups (Diptera, Hymenoptera, Lepidoptera).
  • Complex crosstalk exists between hormonal and nutritional pathways, varying with insect reproductive strategies.
  • MicroRNAs are emerging as important regulators in female reproductive processes.

Conclusions:

  • Understanding the molecular regulation of insect reproduction is vital for diverse insect strategies.
  • Hormonal and nutritional signaling pathways exhibit intricate interactions.
  • MicroRNAs represent a significant area for future research in insect reproductive endocrinology.