What is the suitable temperature for silkworms?

The development temperature of silkworm is 7 ~ 40℃, and the optimum feeding temperature is 20 ~ 30℃.

Silkworm is a deformed insect, the most common one is silkworm, also called silkworm, which is one of the economic insects that spin silk and cocoon on mulberry leaves. Silkworm babies feed on mulberry leaves After eating mulberry leaves continuously, the body turned white and began to peel after a period of time. When peeling for a day or so, if you can't eat or move like sleeping, it's called "dormancy".

Once skinned, it is the second instar larva. If you peel it once, it will increase by one year, and the larva will peel it four times and become a fifth instar larva. After eating mulberry leaves for eight days, they will become mature silkworms and start spinning and cocooning.

Extended data:

Some physical characteristics of silkworm eggs, larvae (silkworm babies), pupae and moths can be used to identify males and females. But the most widely used is to identify the sex of old silkworm, silkworm chrysalis and silkworm moth.

The most reliable feature to distinguish female silkworm from male silkworm is the eighth and ninth abdominal nodes, and there are four transparent points on the ventral surface of the eighth and ninth abdominal nodes of female silkworm. There is a transparent point in the center of the ventral surface of the ninth section of the male silkworm. But generally speaking, the silkworm in larval stage is the most difficult to distinguish sex, and it is often difficult for ordinary silkworm farmers to distinguish sex except senior technicians.

Identifying the characteristics of male and female pupae is also based on the structure of the eighth and ninth abdomen. There is a straight line in the center of the ventral surface of the eighth and ninth sections of the female pupa, which separates the eighth and ninth sections; The male pupa has a pair of small protrusions in the center of the ninth ventral surface of the abdomen.

There is also an X-shaped symbol. The identification of silkworm chrysalis is simpler than larval stage, but it needs to be destroyed and the growth of silkworm is interrupted, so it is generally not used.

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