What is Turtle? What are the living habits of turtles and turtles?

In life, we often use turtle to refer to all turtles, and derive a variety of turtle-related stories or idioms, people often compare turtles and turtles, in fact, in the Chinese world, turtles and turtles and people are really close! As far back as the Yin Shang period, our ancestors used tortoise shells to divinate good fortune, and the words engraved on it were called oracle bone inscriptions, and because of the long life of the tortoise, the tortoise was regarded as a symbol of longevity; For a long time, soft-shelled turtles have been one of people's favorite dishes. At present, there are about 200 species of turtles and turtles scattered all over the world, belonging to the reptiles of the class turtles and turtles, and Taiwan has 5 species of native turtles, all of which belong to the crypto-necked turtles, that is, their heads can be directly and completely retracted into the shell.

These five species of native turtles can be divided into two categories: one is the Taiwanese soft-shelled turtle belonging to the soft-shelled turtle family, commonly known as soft-shelled turtle, group fish or king eight, because of its delicious taste and high nutritional value, it is favored by the aquaculture industry; The other type is the turtle family, which includes spotted turtles, wood coffin turtles, golden turtles and snake turtles, the most common is the spotted turtle, and the snake turtle is more adaptable to the drier habitat environment than the other three turtles.

How do we distinguish between a turtle brother and a turtle brother? In terms of appearance, the most obvious difference between turtles and turtles is that the bone plates of turtles are covered with keratinized shields and are staggered with the bone plates (Fig. 1), while turtles not only do not have shields, but have a soft layer**. Secondly, there is no marginal plate on the bony plate of soft-shelled turtles, and their ribs extend beyond the outer edge of the costal plate (Fig. 2), while the exoskeleton of turtles is surrounded by marginal plates. In addition, the neck and snout process of the turtle are longer, and the snout is like a pig's nose, which is the difference in appearance between the turtle brother and the turtle brother, in addition to the difference in appearance and appearance, the tail of the turtle is also shorter than the turtle.

As the saying goes: The turtle laughs and the turtle has no tail, and the turtle laughs and the turtle has rough skin. Although the turtle does not really have a tail, and the tortoise shell is a keratinized shield, it is not really **, however, from such an account, it also makes us see the difference between the turtle and turtle, and smiles.

If you want to have a deeper understanding of the turtle community, you may wish to take a visit to the museum, the turtle exhibition is waiting for you!

Let's put it simply:

Turtles have no tail, have flesh on their dorsal shells, and have a layer of skin covering their dorsal shells, and mainly live in freshwater areas;

Turtles have tails, hard shells on their backs, different turtle flower tattoos are different, and there are also in the ocean...

The old turtle is the king eight, the turtle often goes ashore, and the turtle does not often go ashore.

The main differences are different biological species, different morphological characteristics, and different living habits, as follows:

First, the species of organisms are different.

1. Stone turtle. Stone soft-shelled turtle, which belongs to the primitive type of shellfish in the phylum mollusk and polyplanta, is one of the important components of marine plankton.

2. Turtles. Turtle, also known as soft-shelled turtle, water fish, group fish, old turtle, king.

8. Mud turtles, etc., are amphibious amphibian amphibians and reptiles belonging to the order of turtles, turtles, turtles, and turtles.

3. Turtles. Turtles, also known as turtles, golden turtles, grass turtles, mud turtles and mountain turtles. It is an amphibious amphibian reptile belonging to the order of turtles, turtles, turtles, and turtles.

Second, the morphological characteristics are different.

1. Stone turtle. The color is the same as that of the rocks, and the shape is a bit like the tide insects on land. It is usually oval, flattened, and symmetrical on both sides.

The shell is composed of 8 shell plates arranged in the form of shingles. The shell is surrounded by a mantle, also known as a ring band. The feet are flat and wide, occupying almost the entire ventral surface of the body, and are suitable for clinging to rock surfaces or crawling.

2. Turtles. Its head resembles that of a turtle, but its dorsal carapace does not have tortoise-like stripes, and its edges have a soft skirt, and its shell is softer than that of a tortoise. Color: dark green.

The shape is oval, flatter than the turtle, its dorsal and ventral carapace has a soft outer membrane, surrounded by a delicate skirt, the head, neck and limbs can be retracted, the limbs each have five claws, crawling agile, from the appearance of the color, the soft-shelled turtle usually has a dark green back and limbs, some of the back is light brown, and the ventral surface is white and red.

3. Turtles. The dorsal carapace is flattened. There are 3 longitudinal ridges, and the male adult has weak ridges.

Each shield has large black-brown patches, and sometimes the ventral carapace is almost entirely occupied by black-brown patches, appearing brownish-yellow only at the sutures. head olive or black-brown; There are dark bordered yellow stripes and maculas on the side of the head and throat, extending posteriorly to the neck, and are not obvious in males. The limbs are grayish-brown.

3. Different living habits.

1. Stone turtle. The body of the turtle is soft, the elongation and flexure are large, it can be tightly attached to the stone crack, and it can be rolled into a ball when it is not attached to other objects. It is attached to the stone very firmly, and it can be injured by forcibly prying it off.

It is more common in the intertidal zone or in shallow water (especially in warm areas). The colder areas live in deep water up to a depth of 4,000 meters (13,000 feet). Most nocturnal.

The larvae (basila larvae) live freely and are very numerous, crawling very slowly, mostly at night. If there is enough food**, they can stay at a fixed point for a long time.

2. Turtles. Soft-shelled turtles like to inhabit rivers, lakes, reservoirs, ponds and other waters with clean water quality, soft-shelled turtles are fierce and aggressive by nature, and the phenomenon of bullying between groups is very common, and they will eat their own kind when food is scarce. Likes to eat animal bait.

Juvenile soft-shelled turtles feed on aquatic insects, earthworms, tadpoles, shrimp, etc. Adult turtles feed on snails, molluscs such as clams, fish, shrimp, and animal carcasses (because they can't catch fish), and also eat plant feeds such as vegetables, fruits, and grains.

3. Turtles. Found in rivers, lakes and ponds. It has a very strong carapace, and when attacked, the turtle can retract its head, tail and limbs into the shell. Most turtles are carnivorous and feed on worms, snails, shrimp and small fish, as well as the stems and leaves of plant socks.

Turtle is not a turtle stool Turtle turtle is commonly known as jujube fish, water fish, group fish, etc., is a popular aquatic product among consumers. The turtle was originally a black turtle, commonly known as the grass turtle, which is the most widely distributed and the largest number of turtles in China.