The content of this article has been released in the watermelon video "whether the oil gourd can "live a long life", temperature control is critical"
Song bug lovers have probably heard this sentence called "hungry undead grasshopper, frozen undead oil gourd", which means that grasshoppers are resistant to hunger, while oil gourds are resistant to low temperatures. As the "first songbird" of the oil gourd, how tolerant of temperature does they tolerate at different stages such as incubation, development, and growth? The paper "The Effect of Temperature on the Growth and Development of Beijing Oil Gourd" can tell us the answer.
First, the eggs need to be stimulated by low temperature to be easier to hatch.
The eggs of Beijing oil gourd are treated at different times at low temperatures of -5 to 4 °C, and then placed under the condition of 28 °C for incubation, and the results are shown in the following table:
Eggs that have not undergone low temperature stimulation (the cold treatment time in the table above is 0) have a incubation time of 113 days and a hatching rate of only 16.7%; while eggs that have undergone low temperature stimulation have a greatly shortened incubation cycle, which can be hatched in more than 10 days, and the hatching rate is greatly improved. It should be noted that the incubation of Beijing oil gourd eggs does not have obvious differences due to the length of treatment time, the incubation time of 12 hours is 14.5 days, and the 30-day treatment takes 14.9 days; the hatching rate difference is not significant, and the incubation rate is more than 60% of the hatching rate at different times.
Second, the growth and development of larvae require a higher temperature.
It can be seen from the data in the table that in the case of 16 °C, the oil gourd larvae can not molt normally or molt but still all die, with the increase of temperature, the mortality rate gradually decreases, when the temperature is in the range of 28 ~ 32 ° C, its mortality rate is 0, indicating that the high temperature is conducive to the growth and development of the oil gourd larvae.
Third, the lifespan of adult insects shortens with increasing temperature.
The changes in the lifespan and reproductive ability of adult oil gourds with temperature are shown in the following table:
As can be seen from the table, in the range of 16 to 32 °C, the lifespan of adult insects shortens with the increase of temperature, and the survival time of 20 °C is the longest, which can reach 151.2 days. The amount of eggs produced increases with the increase of temperature and then decreases, and the adult eggs lay at 24 to 28 °C are high, reaching a maximum value of 26 °C and reaching 1879 grains.
For players who raise insects to listen, the temperature of the environment where the oil gourd is located should be controlled at about 20 ° as much as possible, and the temperature is too high will affect the life of the insect. For the "worm handle" of the "worm", in order to allow the female to lay more eggs, they should be placed in an environment of about 26 °.
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