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Infected shrimp and seagull predation

Infected shrimp and seagull predation

C029/6779

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Credit

PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY

Caption

Infected shrimp and seagull predation. Infected lagoon sand shrimp (Gammarus insensibilis) at the surface of the sea, infected with parasitic flatworms. Seabirds such as seagulls (one pictured) prey on such shrimps. This amphipod crustacean, which reaches lengths of 20 millimetres, is found in coastal lagoons. The life cycle of the parasitic trematode (flatworm) Microphallus papillorobustus includes this shrimp as an intermediate host. When infected, the shrimp swims upwards, making it more vulnerable to predation. A non-infected shrimp will swim further below the surface, avoiding predation. The flatworm's eggs are transmitted in the faeces of the seabirds, completing the life cycle.

Release details

Model release not required. Property release not required.

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