Methods for making crab specimens:

1. Principle:

1. Crabs are crustacean animals. Due to their complex body structure, there are certain difficulties in making specimens. Difficulty. Generally, a dissecting needle or thin iron wire is used with pointed tweezers to mash the crab meat, and then rinse it out with water. Then soaked in 5% formalin and bonded with cotton and latex. ?

2. Place the prepared crab specimens in a cool and ventilated place to dry. When storing, pay attention to ventilation, avoid light, and avoid high temperatures.

2. Utensils: (1) Materials: Prince crab (thin-pointed round-toed crab) (2) Supplies: tweezers, wire, disposable gloves, 5% formalin, cotton, latex, glass rod , plastic basin.

3. Steps:?

Carefully peel off the head and breastplate of the crab, being careful not to damage the crab body. Use tweezers to remove the contents of the cephalothorax.

Use tweezers to remove the crab meat and internal organs from the crab. It can moderately damage the bones in the body, but do not damage the surface structure.

Use an iron wire to carefully remove the crab meat from the crab legs. You can insert the wire from the joints of the crab legs to crush the crab meat, and then rinse it out with clean water.

Use clean water to completely rinse out the crab meat in the crab shell until the crab shell is light and translucent. Drain.

Immerse the specimen in 5% formalin for 2 minutes

Take out the specimen and use a whole piece of fluffy cotton ball of medium size to coat the crab body with latex. The other end of the cotton ball is also coated with latex, and the crab's head and breastplate is covered with the crab body and bonded with the cotton ball. Then use an appropriate amount of latex to glue the crab's mouth. If there is a broken part of the crab leg, you can use cotton and toothpicks dipped in latex to connect the broken leg to the body. 7. Arrange the bonded specimen into a good shape (position the legs, extend the eyes) and place it in a ventilated and cool place to dry.

IV. Notes: 1. The flesh of the specimen must be removed. 2. The specimens should be placed in a cool and ventilated place to dry, and should not be placed in direct sunlight to prevent the carapace from fading. 3. Only when the smell of the specimen is completely gone can it be placed in a box for storage.