Culture Technique of Rana nigromaculata

The culture environment of Rana nigromaculata requires high dissolved oxygen in the pond, the suitable growth temperature is 20-30 ℃, and likes to live in a weedy, warm and humid environment. Daily management: fear of direct sunlight, you can set up hidden places in the pool, and plant vegetables around, etc., during the period to timely clean up residual food, feces, regular replacement of pool water, do a good job of disinfection, feed to be nutritious and comprehensive. The eating habits of the black spot frog: the food habits of the tadpole period are miscellaneous, and the young frogs like to eat insects and other arthropods.

First, the environment of breeding black spot frog

1. Water quality

During the tadpole period, the black spot frog requires a high amount of dissolved oxygen in the frog pond, which generally needs to meet the fishery water quality standard. although young frogs and adult frogs breathe with their lungs, the dissolved oxygen content in the water is high, which can better promote their growth and development. the suitable PH value is about 7-8, and the general salinity should not exceed 2.

2. Temperature

The suitable temperature for the growth of Rana nigromaculata is 20-30 ℃. When the temperature drops below 10 ℃, the activity and feeding ability will slowly weaken, when it falls below 5 ℃, it will begin to hibernate. When the water temperature is above 32 ℃, the activity ability will gradually weaken. When the temperature is higher than 35 ℃, it will cause the black spot frog to die one after another.

3. Humidity

The skin of the black spot frog does not have the tissue structure to protect the evaporation of water in the body, so it can only rely on the mucus secreted by the skin glands to maintain the humidity of the body surface, but this is obviously not enough, so it is necessary to have a pond with good water quality. and a warm, humid, overgrown environment.

4. Lighting

The black spot frog likes to go out during the day and at night, and is afraid of direct sunlight, but it can weaken the light. Light can promote the growth, reproduction and metabolism of the frog. If living in the dark for a long time, it will make the gonads of the black spot frog difficult to develop and mature. It may even cause the cessation of ovulation and spawning.

Second, the daily management of breeding black spot frog

1. Black spot frogs generally live in caves during the day, so they need to build hidden places in the pond, where they can plant aquatic plants or plant melons, fruits and vegetables around them.

2. Young frogs are afraid of bright light and alarm, and are sensitive to changes in the surrounding environment, so when managing young frogs, we should pay attention to keep the perimeter of the pool relatively quiet.

3. It is necessary to clean up the residual food and faeces in time, change the pool water regularly and disinfect it, so as to keep the water quality clear and reduce the incidence of disease.

4. The feed should be nutritious and comprehensive, and the protein content should be more than 38%.

Third, the feeding habits of Rana nigromaculata

1. Tadpole stage: Rana nigromaculata has miscellaneous food habits in the tadpole stage, and likes to eat both animal and plant food.

2. After hatching, tadpoles mainly rely on absorbing yolk sac nutrition to maintain life. After 3-4 days, tadpoles begin to eat food such as plankton and unicellular algae in water.

3. After the metamorphosis of tadpoles: after metamorphosis into young frogs, the tadpoles of Rana nigromaculata generally like to eat insects and other arthropods, such as Coleoptera, Diptera, Hemiptera, Homoptera, Orthoptera, Lepidoptera and so on. Also like to swallow a small amount of shrimp, snails, cyprinidae, Loach, small fish and so on.