SEXUAL COMPOSITION and ANALYSIS OF REPRODUCTIVE FEMALES IN THE NORTH ATLANTIC RIGHT WHALE, EUBALAENA GLACIALIS, POPULATION

A bstract To test hypotheses involving reproduction and demographics, the sex of individuals must be established, but many species of Cetacea are not obviously dimorphic. In the North Atlantic right whale, Eubalaena glacialis , population, the sex of 61 males and 55 females had been determined previously by observation of the urogenital region, and the sex of 43 more females had been inferred from repeated sightings with a calf. To confirm …