Invasive Species Ireland

Alligator weed

Alternanthera philoxeroides

Status:

Potential

Habitat:

Freshwater

Threats:

Chokes up riverine habitats when it becomes established

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Brown Bullhead Catfish

Ameiurus nebulosus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish species.

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Chinese mitten crab

Eriocheir sinensis

Status:

Potential

Habitat:

Freshwater

Threats:

Threatens ecosystem functioning and protected species.

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Fanwort

Cabomba caroliniana

Status:

Potential

Habitat:

Freshwater

Threats:

Competition with native species. Clogging of waterways. EU Species of Union Concern

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Fishhook waterflea

Cercopagis pengoi

Status:

Potential

Habitat:

Freshwater

Threats:

Competiton with native invertebrates. Negative impacts on native fish.

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Floating primrose - willow

Ludwigia peploides

Status:

Potential

Habitat:

Freshwater

Threats:

Shades out native plants and changes water chemistry

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Gyrodactylus salaris

Status:

Potential

Habitat:

Freshwater

Threats:

Serious negative impacts on salmonid stocks.

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North American Signal Crayfish

Pacifastacus leniusculus

Status:

Potential

Habitat:

Freshwater

Threats:

Detrimental impacts on white clawed crayfish. Human health impacts.

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Quagga mussel

Dreissena bugensis

Status:

Potential

Habitat:

Freshwater

Threats:

Fouling, negative impacts on native species and local extinction of unionids.

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