A marine biologist from Australia has documented a globally unique event: Two male leopard sharks mated in quick succession with a female off the coast of New Caledonia. This is the first scientifically confirmed observation of this behaviour.
Significance for species conservation
Hugo Lassauce from the University of the Sunshine Coast spent several weeks tracking the sharks when he filmed the rare mating behaviour. The footage suggests that the region could be an important breeding ground for the endangered species.
Lassauce is part of the international ReShark collective, which is working on a reintroduction programme for leopard sharks in Southeast Asia. There, the species is considered nearly extinct, while in Australia it still has relatively stable populations.
Insights into shark behaviour
“We had only observed courtship behaviour before, but on that day, the males suddenly grabbed the female’s fin – and mating began,” said Lassauce. For him and his team, it was clear that this observation was of great significance for both science and species conservation.
His colleague Christine Dudgeon emphasised that knowledge about the reproduction, migrations, and behaviour of the animals is crucial for developing successful conservation programmes. In addition to overfishing, the use of their skin for the interior of luxury yachts is also a threat to the species.
Distribution and threats
Leopard sharks (Stegostoma tigrinum) live in coastal waters of the Indo-Pacific, from the east coast of Africa to the Pacific islands. While they are still common in Australia, they are considered highly endangered in other parts of Asia. The now-documented mating provides important clues for the protection and reintroduction of this fascinating shark species.
