A hermaphrodite beluga whale (Delphinapterus leucas) was found in the St. Lawrence Estuary, Quebec, Canada. This animal had two testicles, two separate ovaries, and the complete ducts of each sex; cervix, vagina and vulva were absent. Mature spermatozoa were found in the lumen of seminiferous tubules in the testicles, and numerous involuted corpora lutea were recognized in the ovaries. This represents the first case of true hermaphroditism in a cetacean, and is the fourth hermaphrodite mammal with two testicles and two separate ovaries.
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1 April 1994
True Hermaphroditism in a St. Lawrence Beluga Whale (Delphinapterus leucas)
Sylvain De Guise,
André Lagacé,
Pierre Béland
Journal of Wildlife Diseases
Vol. 30 • No. 2
April 1994
Vol. 30 • No. 2
April 1994
beluga whale
Delphinapterus leucas
True hermaphrodite