Giant polyploid epidermal cells and male pheromone production in the tephritid fruit fly Eurosta solidaginis (Diptera:Tephritidae)

Eurosta solidaginis males produce large amounts of putative sex pheromone compared to other insect species; however, neither the site of pheromone production nor the release mechanism has been characterized. We compared E. solidaginis males and females, focusing on sexually dimorphic structures that are known to be involved in pheromone production in other tephritid species. Morphological and chemical analyses indicated that the rectum and pleural epidermis are involved in male E. solidaginis pheromone production, storage, or emission. We detected large quantities of pheromone in the enlarged rectum, suggesting that it stores pheromone for subsequent release through the anus. However, pheromone might also discharge through the pleural cuticle with the involvement of unusual pleural attachments of the tergosternal muscles, which, when contracted in males, realign specialized cuticular surface elements and expose less-sclerotized areas of cuticle. In males, pheromone components were also detected in epidermal cells of the pleuron. These cells were 60–100 times larger in mature males than in females and, to our knowledge, are the largest animal epithelial cells ever recorded. Furthermore, because these large cells in males are multinucleated, we presume that they develop through somatic polyploidization by endomitosis. Consequently, the pheromone-associated multinuclear pleural epidermal cells of Eurosta solidaginis may provide an interesting new system for understanding polyploidization.



Work Title Giant polyploid epidermal cells and male pheromone production in the tephritid fruit fly Eurosta solidaginis (Diptera:Tephritidae)
Open Access
  1. Eric C. Yip
  2. Istvan Miko
  3. Jonah M. Ulmer
  4. Nancy A. Cherim
  5. Mark A. Townley
  6. Steffen Poltak
  7. Anjel M. Helms
  8. Consuelo M De Moraes
  9. Mark C Mescher
  10. John F. Tooker
License In Copyright (Rights Reserved)
Work Type Article
  1. Journal of Insect Physiology
Publication Date April 1, 2021
Publisher Identifier (DOI)
Deposited July 15, 2021




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Work History

Version 1

  • Created
  • Added Yip_al_2021-Giant_polyploid_epidermal_cells_and_male_pheromone_production_in_the_tephritid_fruit_fly_Eurosta_solidaginis__Diptera_Tephritidae_.pdf
  • Added Creator Eric C. Yip
  • Added Creator Istvan Miko
  • Added Creator Jonah M. Ulmer
  • Added Creator Nancy A. Cherim
  • Added Creator Mark A. Townley
  • Added Creator Steffen Poltak
  • Added Creator Anjel M. Helms
  • Added Creator Consuelo M De Moraes
  • Added Creator Mark C Mescher
  • Added Creator John F. Tooker
  • Published
  • Updated
  • Updated