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GYNANDROMORPHS

  • Category
    Miscellaneous
  • Published
    9th Jul, 2020

In 2019, a peculiar dragonfly, the Scarlet Skimmer (Crocothemis servilia), in the Puzhakkal area of the Kole wetlands in Thrissur was discovered.

  • In 2019, a peculiar dragonfly, the Scarlet Skimmer (Crocothemis servilia), in the Puzhakkal area of the Kole wetlands in Thrissur was discovered.
  • During the discovery, researchers did not know that they were documenting a very rare biological phenomenon.
  • But now, a rare biological phenomenon i.e. Gynandromorphism has been spotted in the Scarlet Skimmer (Crocothemis servilia).

What is Gynandromorphs?

  • Gynandromorphs are chimeric individuals having both male and female tissues, and are viewed by the scientific community as a genetic aberration.
  • Even though common in some arthropod taxa such as Crustacea and Arachnida, it is very rare in Odonates and only 30 individuals from seven families have been reported with the condition worldwide.
  • The spotted individual showed bilateral gynandromorphism of only the thorax, half of which showed blood red colouraton as in males, and the other half had the pale yellow characteristc of females.
  • The base of the wing of the red half was marked with rich amber, in contrast with the other wing base, which was paler.
  • The head, legs and abdomen showed typical female morphology.
  • The individual had a mix of male and female external characters, ranging from almost entirely female to about equally divided.

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