How to make animal specimens?

1, impregnation method

Alcohol and formaldehyde solution are the most commonly used preservatives. The collected animal specimens can be directly soaked in 70% alcohol or 5 ~ 10% formaldehyde solution or their mixture.

Living specimens should be soaked in pure formaldehyde solution or 95% alcohol fixed solution first, and then moved into preservation solution. After the large animal specimen is executed, the specimen should be cut into small incisions to make the preservation solution easy to penetrate into the interior, or the preservation solution should be injected into the body cavity with a syringe.

When soaking animal specimens, when the specimens are not fixed and hardened, the appendages and other body parts should be straightened to form an appropriate posture, and labels should be attached to the appendages or other positions, and the name, collection date and collection place of the specimens should be marked with black ink.

After the specimen is immersed in the preservation liquid, if the liquid becomes dirty, it should be replaced at any time. Bottles containing specimens should be sealed with paraffin at the cork to prevent evaporation of preservation solution.

2. Stripping method

Refers to vertebrates, that is to say, most species of vertebrates can be made into peeled specimens, but in practical application, they are mainly suitable for mammals and birds, as well as other large species of various classes, such as whales, sharks, turtles, etc., and are not suitable for soaking. ?

There are many kinds of animals, and their external shapes, body sizes, skin conditions and so on are very different. In the production process, we must adopt different methods according to different situations.

Extended data:

Tool materials for making animal specimens

1. Anatomical tools: such as scalpels, tweezers, scissors, bone scissors, etc. Can be prepared according to economic conditions.

2. Woodworking and metalworking tools: such as wire cutters and vises. ? Head, electric drill and saw can be prepared according to conditions.

3. Gypsum powder (or talcum powder): It has water absorption function, and is mainly used to absorb the water of washed bird feathers. When peeling, it is scattered between muscles and skin to prevent adhesion and prevent blood and fat from polluting the feathers.

4. Lead wire: used for supporting animal specimens. Models with different thicknesses can be selected according to the size of animals.

5. Filler: mainly used to fill specimens, as well as cotton, bamboo silk, hemp knife, brown and so on. You can choose.

6. Glass artificial eye: It can be used to replace the eyes of animals.

7. Needle and thread: used to suture incision specimens.

8. Specimen table, branches, etc. : Used for fixing animal specimens.

9. Mark and record the name, sex and collection place of animal specimens.

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