Bees · Facts · Hormones · Larvae · Life Cycle · Metamorphosis

“Genes involved in thoracic exoskeleton formation during the pupal-to-adult molt” Journal Article extracts

I’m reading this article and picking out key bits of info I think may be useful and relevant to my project:

  • Insect development occurs through a series of exoskeleton (cuticle) renewals, or molts
  • Molt succession includes apolysis (the separation of the cuticle from the epidermis), synthesis of a new cuticle and ecdysis (the shedd
  • instar, or stage). After four molting episodes, the honeybee larva reaches the fifth larval instar without phenotypic changes, except for a considerable increase in size
  • A genuine honeybee pupa exists for a relatively short period, lasting approximately 40 h from pupal ecdysis
  • During the next 160 h, the bee is a pharate-adult, meaning that it is producing the adult cuticle underneath the pupal cuticle
  • Development toward the adult stage involves the reconstruction and maturation of the definitive cuticular exoskeleton, formation of internal tissues and organs, and programmed cell death of many larval tissues
  • The larval thoracic muscles are entirely disintegrated during the honeybee metamorphic molt, and are replaced by imaginal muscles originating from myoblast precursors, which elongate, join, and form the striated muscle fibers
  • untitled

Sources used in this blog post:
Prioli, M. and Soares, M. (2013) Genes involved in thoracic exoskeleton formation during the pupal-to-adult molt in a social insect model, Apis mellifera, BMC Genomics, 14(1), pp. 1–17.


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