Neil Gemmell

2

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6

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The male bluehead wrasse defends his group of yellow females, one of whom has to step-up and take charge if he leaves. Kevin Bryant

What we learn from a fish that can change sex in just 10 days

Jenny Graves, La Trobe University; Erica Todd, Deakin University, and Neil Gemmell, University of Otago

When a male bluehead wrasse is removed from the group he dominates, the largest female changes sex, rapidly transforming ovaries into sperm-producing testes. Molecular research shows how.
With the help of environmental DNA, scientists are compiling a census of life in Loch Ness, which should establish if there is any scientific basis to the centuries-old legend of the Loch Ness monster. Supplied

Monster hunt: using environmental DNA to survey life in Loch Ness

Neil Gemmell, University of Otago

Scientists are using environmental DNA to compile a census of life in Loch Ness and to establish if there is any scientific basis for the centuries-old monster legend.

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