"Come and see, there are a lot of nails crawling on the walls!" Yesterday, when a citizen was playing in the beautiful living space of Jiefang Park, he found that the outer wall was "hung" with small snails as slender as nails, and hurriedly beckoned friends to come and watch.
The outer wall of the shared space for a better life in Jiefang Park is crawling with smoke pipe snails
The reporter saw on the spot that on the wall of the shared space outdoors near the sink, there were indeed many small snails about 1.5 centimeters long, "slim" in shape, and threaded yellow-brown shells. They stand still, like "nailed" to a wall.
This small snail has also been found on the facades of other places, even on glass doors. Sometimes, their small black, soft heads protrude from the mouth of the shell, and the head has a pair of small tentacles. Mr. Liu, a citizen who found them, asked: "I heard that snails can be infected with schistosomiasis, are these snails in the end?" ”
The reporter sent the photo to Dong Likun, a senior engineer at the Municipal Academy of Landscape Architecture. After reading it, he replied that this is not a nail snail, but a smoke pipe snail, which is harmless to humans and the public does not have to be nervous. Because their back shell is thin and long, and the shape of the opening is a bit like the smoke pot of the dry cigarette bag before, it has such a strange name.
Dong Likun explained that the pipe snail is a small snail, which usually stays in the grass and deciduous layer, eating fungi or other organic matter for a living. It rained heavily the first few days, so they climbed to a high place or a dry place to stay. Compared with the two, the nail screw is thicker and shorter, and the smoke pipe screw is a little longer. The length of the nail screw generally does not exceed 1 cm, and the length of the pipe snail is generally 1 to 1.5 cm; the direction of the spiral of the shell is also different, the nail screw is right-handed, and the smoke pipe screw is left-handed. In addition, the shell of the pipe snail is relatively smooth, and the shell of the nail snail has a longitudinal pattern, which is relatively rough.
There are antennae on the pipe screw (file image)
The reporter consulted the data and learned that the snail is an amphibian mollusk, and its larvae mostly like to live in the water, and the adults generally like to live in the grass in the wet area above the waterline. Snails are the only intermediate hosts of schistosomiasis and are the main link in the infection of schistosomiasis, so many people feel afraid when they mention snails.
Nail screw (1-6) compared to smoke pipe screw (7).
Editor-in-Chief | He equations
Written | Ming Guan Sheng
| Jenley