Diane Karen Ormsby

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A male tuatara moves across the forest floor. Sarah K. Lamar

Tuatara are returning to the mainland – but feeding the hungry reptiles could be more difficult than expected

Sarah K. Lamar, Te Herenga Waka — Victoria University of Wellington; Diane Karen Ormsby, Te Herenga Waka — Victoria University of Wellington, and Nicola Jane Nelson, Te Herenga Waka — Victoria University of Wellington

Mainland resettlement programmes for tuatara have hit an unexpected snag – the lizard’s voracious appetite for seabirds.
Shutterstock/Rudmer Zwerver

Tuatara are ancient, slow and endangered. But their super speedy sperm could boost conservation efforts

Sarah K. Lamar, Te Herenga Waka — Victoria University of Wellington; Diane Karen Ormsby, Te Herenga Waka — Victoria University of Wellington; Jennifer Moore, Grand Valley State University ; Nicola Jane Nelson, Te Herenga Waka — Victoria University of Wellington, and Susan N. Keall, Te Herenga Waka — Victoria University of Wellington

The male anatomy of tuatara, the last representatives of an ancient lineage, is unique among reptiles. They lack a penis, which has made sperm collection a major challenge – until now.

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