Last time we introduced some black turtles that cannot retract their heads and hands and feet into their shells. This time we will introduce the real black turtles with retracted heads—— Closed shell turtle. Closed-shell turtles are more common in the south of China. Closed-shell turtles can not only retract their heads and hands and feet inside their shells, but also close their shells and completely immerse themselves in their shells, which is a very good way to escape. .
1. Types of closed-shell turtles
Closed-shelled turtles
Closed-shelled turtles start from young, and the chest and ventral shields of the plastron are There is a clear ductile link between them to form a movable "hatch". There are also ligaments connecting the dorsal and ventral carapace, so the front and rear lobes of the plastron can fully close the carapace, and the head, hands, feet and tail can be retracted into the shell. There are 9 species of turtles known in China: golden-headed turtles, yellow-margined turtles, yellow-fronted turtles, three-line turtles, Yunnan turtles, Pan's turtles and Zhou's turtles , Baise closed-shell turtle, Malay closed-shell turtle. The rarest of these is probably the yellow-margined closed-shell turtle. The carapace color of the Yellow-margined Sea Turtle is dark brown, with a distinct yellow line on the ridge; the head color is yellow-green, with a distinct yellow vertical band behind the eyes; the plastron is black, with a horizontal line in the middle Tough wearing can make the front and rear halves of the plastron move apart and move forward, making the front and rear carapace tightly closed.
It needs to be said that not all turtles can close their shells, and young turtles do not have the ability to close their shells. With this technology, the tortoise shells can be completely sealed after the mature tortoises grow up. Therefore, the raising of hatchling tortoises must be more protective and not subject to any safety threats. The number of closed-shell turtles is sparse, and the price is relatively expensive. Some relatively rare closed-shell turtles cost hundreds of thousands or hundreds of thousands, while Huang Yuan is a relatively affordable one. Fortunately, the breeding of closed-shell turtles is relatively easy. It’s not difficult, so there are more people raising closed-shell turtles.
2. Types of box turtles
Box turtle
Box turtles, like closed-shell turtles, can fold their plastron into a closed form. Because of the The carapace stands up high and looks like a small box, so it is called a box turtle. However, many people think that the box turtle is the American version of the closed-shell turtle. There are many kinds of box turtles: Carolina box turtle, Florida box turtle. Box turtle, Eastern box turtle, Gulf box turtle, three-toed box turtle (certain introduction), Mexican box turtle, Yucatan box turtle, swamp box turtle, star-spotted box turtle, painted box turtle, western box turtle, desert box turtle Turtles, etc., the most common of which are the eastern box turtle and the three-toed box turtle
The box turtle is not an overseas species after all. , so the requirements for the breeding environment are relatively high. Box turtles are currently relatively popular in China, but the number is not large and the price is relatively expensive, so not many people keep them.
3. Types of fold-back turtles
Fold-back turtle
Fold-back turtle is a kind of strange tortoise, which is widely distributed in the central continent of Africa. The genus Fold-back turtle is generally divided into. Six species, the lotus leaf tortoise, the saw-toothed foldback tortoise, the bell-patterned tortoise, the leopard tortoise, and the rarer K. lobatsiana and K. speki, all rest on the African continent and have unique characteristics. There are joints in the back half of the carapace that can be folded to protect the back limbs and tail when encountering an enemy. This is unique among all turtles. The most widespread and numerous, it is considered the representative turtle species of the fold-back turtle
The fold-back turtle lives in hot and dry areas, so it is very popular. For closed-shell turtles and box turtles, they are the most difficult to raise. Fold-back turtles have relatively high environmental requirements. Because they are tortoises, they also have special food requirements, including a variety of green foods. In some seasons it is quite noble.
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