Why do snail shells have different colors? Do snail shells grow with the snail?

People who like snails and love snails have many new questions about snails, such as: Why do snail shells have different colors? Does the snail shell grow with the snail? In which month do snails begin to reproduce? What about you? Do you know these common sense?

Contents of this article

1. Why do snail shells have different colors?

2. Will the snail shell grow with the snail?

3. In which month do snails begin to reproduce?

Why do snail shells have different colors?

The color of organisms is controlled by genes. The shells of different types of snails have different colors. Because genes will mutate during the long process of survival and evolution, the color will change. After the mutation, the colors will be diverse. At this time, natural selection may play a role, eliminating mutations that cannot adapt to the environment, and retaining those that adapt to the environment. The colors may become fewer, or even only one color, such as crows, snow rabbits, and polar bears. There is another possibility that natural selection does not play a role, because the ability of various colors to adapt to the environment is the same or similar, so various colors caused by mutations can coexist, such as ladybugs, parrots, snails, etc.

Does a snail shell grow with the snail?

The snail shell grows with the snail, and it is part of the body. Snail is not the name of a biological classification, but generally refers to all terrestrial species of the class Gastropoda. Generally, Western languages ​​do not distinguish between aquatic snails and terrestrial snails. In Chinese, snails only refer to terrestrial species, while the broad definition of snails also includes giant shield slugs. Snails are an animal that includes many different families and genera. Snails belong to the class Gastropoda, a mollusk. They feed on plants and lay eggs in the soil or on trees. They are more common on tropical islands, but some also live in cold regions. Arboreal species are brightly colored, while terrestrial species are usually several similar colors, usually with stripes. The largest species are the crystal snails in Africa, which are more than 20 cm long. Several species of the European genus Helix are often used as delicacies, especially in France. Snails are the most common molluscs on land, and they have high edible and medicinal value.

In which month do snails begin to breed?

Snails can reproduce all year round, generally once every three months or so.

Reproductive characteristics of snails:

1. Snails are hermaphrodites, and they mate with each other. Both males and females lay eggs. The snail itself is both the father and the mother. Two snails cooperate with each other, and each will repeatedly stimulate the other's reproductive hole with the love arrow. After intense piercing and insertion, fertilization can be achieved. Ten days after conception, both parties can lay eggs, and eight days later, the eggs can hatch into small snails.

2. The mating time is long, the egg laying speed is slow, and the difficulty is high. The mating time of estrus snails is as long as 2 to 3 hours each time, and some can last for more than 6 hours. Snails can lay 2 eggs per minute, and each egg laying time is as long as 1 to 2 hours, and some can be more than 3 hours. During the egg laying process, snails often die due to poor feeding, lack of nutrition, exhaustion and dystocia. Some die due to dystocia, accounting for about 30% of the total number of snails.