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Latest Jan Hemmi Stories

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2011-04-18 11:49:56

Fiddler crabs would all end up as dinner for seagulls were it not for their sophisticated threat detection system, vision scientists have found. Researchers in The Vision Centre have announced an important advance in understanding how simple animals distinguish between threats and non-threats by looking for a combination of visual cues. "These crabs can't distinguish shapes and must constantly compete with birds that are bigger and have sharper sight," says Dr Jan Hemmi from the ARC Centre of...

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2010-12-10 10:25:48

Contrary to the recently established theory that marsupials have excellent color vision, research has shown that the wallaby is a rare exception. The research team, led by Dr Jan Hemmi from the ARC Centre of Excellence in Vision Science and The Australian National University, has shown that Tammar wallabies are much weaker in discriminating different colors because they are missing one type of visual pigment cell. "Dr Ebeling has demonstrated that wallabies do not have the complete set of...