Intersexuality and its Control by the Androgenic Gland in the CrayfishCherax quadricarinatus Academic Article uri icon


  • Intersex individuals, possessing both male and female characteristics, have been documented mainly in hermaphrodite species. Intersex characteristics may be limited to the external morphology or may extend to gonadal differentiation. Hermaphroditism—the condition of having both male and female functional reproductive organs in one individual— has been reported for a variety of crustaceans. Some cases of sequential hermaphroditism, in which intersex individuals serve as a transitional form during the process of sex change, have also been reported. Although sex changes occur only in a small percentage of crustacean species, protandry (change from male to female) predominates, representing approximately 82% j> f crustacean sequential hermaphroditic species (Brook et al, 1994). Crayfish are generally regarded as gonochoristic, ie, producing distinct male and female …

publication date

  • January 1, 1997