Is the marsh cap slug useful?

Is the marsh cap slug useful?


Pond owners are unjustly afraid of damaging the marsh cap slug: The Animals are even more useful than other water snails.

Snails are mostly useful

Among the snails that live on land, only nudibranchs cause damage to plants. All other species are useful because they kill dead material.

Among the water snails, some round-shaped snails, such as the post-horn snail, are attacked by an acute lack of food in living plants. The main food of the snails in the garden pond are algae, bacteria and detritus, ie decomposing organic substances of any kind.

Special benefit of the sump snail

The snail absorbs algae and remains of fish food. If a dense bacterial lawn is present, it grazes it off. In this respect, it differs little from other aquatic snails.

Swamp cap snails are particularly useful because they are also capable of filtering suspended matter out of the water. They create a network of mucus on the gills that trap plankton and other tiny particles. The net fills, tears and clumps. The marsh cap slug then eats the net and its contents.

Winning this kind of food clears the water. Most water snails can not pick up these particles until they have sunk to the bottom.

A Robust Helper in the Garden Pond

The sump lid snail is extremely resilient. It has a lid on the foot, with which it can close the housing. In this way, it seals itself off from the outside world and survive even extremely cold winters on the bottom of the pond.

The snail species tolerates unusually high temperatures of over 25 degrees. Spitzschlammschnecken die already at 26 degrees. Thus, sump lid snails are also well suited for small ponds, which heat up strongly in summer.

The snail lives predominantly on the ground of moving waters. In the garden pond, she prefers the shallow riparian zones. Some dig in the mud at the bottom of the pond.

While most snails are hermaphrodites and lay eggs, marsh cap slugs are sexually distinct. The female retains the fertilized eggs in the body. The developing embryos live on a protein-rich fluid that forms on the ovary.

Most females carry embryos at various stages of development and give birth to the oldest animal individually. The young snails are fully developed and usually four millimeters in size. Adult animals bring it to a housing diameter of five centimeters.

It is worthwhile to suspend some specimens in the pond, as the snails improve the quality of the water. In order to have offspring, males and females are required. In the male animals the right antennae are short and thickened, the females have equally long antennae.



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