What’s black and white and eating stuff all over? Hypotheses for the evolution of killer whale coloration and similar coloration patterns in prey species

The greatest diversity of killer whale forms–or possible (sub)species – is in the Antarctic. One reason may be because killer whales originated in, or near, the Antarctic, which would also explain their large size - an example of Bergmann’s rule... continue reading

Are male killer whale (Orcinus orca) dorsal fins indicators of fitness?

The females of many animals may assess the fitness and health of males via displays or physical features, such as the tail of a peacock [http://en.wikipedia.org/wiki/Signalling_theory]. Physical features may be a “handicap” that fit males can... continue reading


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