Infestation Levels

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Great blue heron eating a fish

Present:

Presence of New Zealand mudsnails has been detected, but Infestation Level is unknown.

None Found:

No mudsnails were observed at the site.

Trace:

Rare: You have to search numerous rocks and wood to find a snail.

Trace amounts of New Zealand mudsnails















Low:

Occasional: Snails are present on some of the rocks and wood, but not all. There are a few clusters.

Low infestation level: New Zealand mudsnails















Moderate:

scattered: Snails are commonly found on rocks and wood at site, but in limited clusters.

Moderate infestation level: New Zealand mudsnails












High:

Fairly dense: Snails are commonly found. Heavy clusters of snails on most pieces of substrate.

High infestation level: New Zealand mudsnails