Adults dig into the soil and build an epiphragm, while juveniles search protected places under stones or leaves of low plants.
12.
To seal the opening to their shell to prevent water loss, pulmonate land snails secrete a membrane of dried mucus called an epiphragm.
13.
When young, the mouth is enclosed by a thin membrane called an " epiphragm ", which is covered with surface hairs.
14.
However, some terrestrial pulmonate species are capable of secreting an epiphragm, a temporary structure that can in some cases serve some of the same functions as an operculum.
15.
In most species the epiphragm is made of dried mucus, and although it is elastic, it is fairly easily torn when forcibly removing a snail from its substrate.
16.
An "'epiphragm "'is a temporary structure which can be created by many species of shelled, air-breathing land snails, terrestrial pulmonate gastropod mollusks.
17.
It has no operculum; during dry or cold weather it seals the aperture of the shell with a thin membrane of dried mucus; the term for such a membrane is " epiphragm ".
18.
This very sturdy flat calcareous structure has a small perforation to allow for oxygen exchange . " Helix pomatia " snails hibernate for many months buried in the soil, and a strong solid epiphragm protects them not only from desiccation, but also against attacks by soil-dwelling predators such as carnivorous beetle larvae.
19.
This simple mucus epiphragm covers the entire aperture of the snail, being attached at the rim of the aperture, and depending on the habits of the species of snail, is very often also glued to a solid substrate, such as a rock surface, a wall, a tree branch or the stem of a plant, reducing water loss from the soft tissues of the snail's body.
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