Kōrero: Marine animals without backbones

Flatworm life cycle

Flatworm life cycle

Parasitic flatworms are also known as flukes. One New Zealand species, Curtuteria australis, is a common parasite of shellfish and shorebirds. They start life as eggs that are passed out in the faeces of birds such as oystercatchers. If eaten by a mudflat snail, or whelk, the eggs hatch and the larvae multiply by budding. The tiny fluke larvae leave their whelk hosts and invade another shellfish, cockles. The larvae accumulate in the foot of cockles, preventing them burrowing into the mud to escape predation. The stranded cockles are eaten by oystercatchers. Once inside the bird, the flukes mature and produce fertilised eggs, and the cycle begins again.

Te whakamahi i tēnei tūemi

Te Ara – The Encyclopedia of New Zealand
Artwork by Bruce Mahalski

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Source: Robert Poulin, Going in circles: the complex transmission routes of parasites. Dunedin: University of Otago Press, 2004

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Te tuhi tohutoro mō tēnei whārangi:

Dennis Gordon and Maggy Wassilieff, 'Marine animals without backbones - Simple worms', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/mi/diagram/5853/flatworm-life-cycle (accessed 22 February 2020)

He kōrero nā Dennis Gordon and Maggy Wassilieff, i tāngia i te 12 Jun 2006