Culture Technology of Stone Frog

Stone frog is one of the main edible frogs because of its delicious meat, fast growth and large size. Traditional Chinese medicine believes that stone frog has a sweet and flat meat taste, enters the lung, stomach and kidney meridians, and has the effect of invigorating the spleen and eliminating accumulation and nourishing strength. use it to treat symptoms such as indigestion, lack of food and weakness. Stone frog is also a rising star of frog breeding industry in China, and it is a new hot spot for farmers to increase their income.

The Life trainee of Stone Frog

Stone frog belongs to running water life type. It is often inhabited in the stream with slow flow in the mountain area or in the puddle of the stream, where both sides of the stream are rich in vegetation. They rarely leave the water, and their body color often adapts to their living environment. The second sexual characteristics develop towards a strong embrace, with large males, extremely strong forelimbs and well-developed marital thorns, which have a lot to do with reproductive characteristics. when spawning, males and males must lay their eggs in a stream hit by running water. during mating, the male hugs the female forcefully and strengthens the male's fixation with the help of abdominal spines so that they are not washed away by the current. The stone frog has an internal vocal sac, the sound is low and turbid, and the male call is "goo goo". The female responds with a "click" sound. Stone frogs have the habit of living in groups and foraging at night, often several or dozens of them live together. In a quiet and suitable environment, stone frogs also come out to look for food during the day, and the peak period of activity is at night. Stone frog is good at jumping and climbing, usually the activity is weak and stable, in the peak period of breeding, frequent activities, with singing and hugging and other behaviors.

Stone frogs like to eat active animals and generally do not eat dead or immobile food. in the natural state, stone frogs eat a wide range of food, in addition to insects, centipedes, spiders, horse land, snails, snails, clams, earthworms, shrimp, but also prey on crabs, miscellaneous fish, Loach, young snakes and small birds. Stone frogs in different areas have different feeding habits due to the different bait that the environment can provide. Stone frogs generally swallow 9% of their body weight in nature, sometimes up to 12.8%.

Tadpoles: stone frog tadpoles sometimes feed on water plants by streams or sponges at the bottom of the water. They use horn teeth to gnaw off soft plant tissue to eat. The species eaten by tadpoles are phytoplankton, filamentous algae, sponges, mosses, diatoms, dinoflagellates, goldfish algae and plant debris, and animals include paramecium, ciliates, water fleas, rotifers and so on. It has also been found that stone frog tadpoles feed on epiphytes that scrape up rocks in the water, plankton in the water, tender leaves of plants that fall into the water, or animal carcasses in streams. Sometimes gnawing on the dead.

Adult frogs: the food is mainly animal, and most of them are insects and their larvae, including insects, centipedes, bee spiders, horse land, snails, snails, clams, shrimp, crabs, miscellaneous fish, sand dolphins, as well as earthworms, young snakes, small birds and so on.

Stone frog is a variable temperature animal, which has no ability to regulate body temperature and heat preservation, and its body temperature varies with the external temperature. Generally speaking, the suitable growth temperature of stone frog is 18 ℃, and the optimum temperature is 24 ℃. Spring and autumn are the seasons with the most frequent activity, the largest food intake and the fastest growth. April to June and August to September are the best periods for reproduction. When the water temperature exceeds 30 ℃, the feeding activity decreases. When the water temperature drops to 12 ℃, the frog's metabolism is very weak and goes into hibernation. During hibernation, the frog's eyes are closed, do not eat and do not move, rely on fat body to maintain life activities, and do not respond to external stimuli. If the water temperature rises to a suitable temperature during hibernation, the frog will be active again. The lethal high temperature of adult stone frog is about 31 ℃, which varies in different seasons. Stone frogs can also tolerate a long-term 0 ℃ environment, but the water cannot freeze, and the lack of oxygen caused by ice can lead to the death of stone frogs.

Stone frog eggs are often laid in the gentle and shallow water, attached to rocks and aquatic plants, and the glial membrane outside the eggs expands and thickens with water, with strong stickiness, connecting into a cord or grape string, sometimes up to about 20 cm long. Eggs are generally 4 mm in diameter and up to 5 mm in diameter. according to the different water temperature, frog eggs usually hatch into tadpoles after 8-15 days. Tadpoles like to live in big stones or gravel piles in the creek pits. Tadpoles generally grow into young frogs after 50-78 days in a suitable environment.

Culture techniques of stone frog

Stone frog eggs are often laid in the gentle and shallow water, attached to rocks and aquatic plants, and the glial membrane outside the eggs expands and thickens with water, with strong stickiness, connecting into a cord or grape string, sometimes up to about 20 cm long. Eggs are generally 4 mm in diameter and up to 5 mm in diameter. according to the different water temperature, frog eggs usually hatch into tadpoles after 8-15 days. Tadpoles like to live in big stones or gravel piles in the creek pits. Tadpoles generally grow into young frogs after 50-78 days in a suitable environment.

1. Preparation of stone frog bait

The bait of stone frog is mainly earthworms, yellow powder insects, fly maggots and so on.

2. The construction of stone frog pond.

Wild stone frogs perennially inhabit shady mountain streams and ditches or near stone caves with waterfalls. Their living environment requires adequate water flow, cool, humid, fresh water quality, and like to live in stone caves. Growth and development, breeding and reproduction have been in the wild for a long time. Great changes have taken place in the living environment of artificially domesticated stone frogs from wild to domesticated. When stone frogs are raised artificially, the reasonable design of the frog pond must be adopted so that the frog pond should not only be similar to the natural environment, but also be convenient for manual management.

① breeding site selection: the quality of the environment directly affects the growth, development and reproduction of stone frogs, frog ponds are not restricted by location, generally speaking, breeding sites should be selected in places with good water quality, convenient drainage and irrigation, quiet environment, warm winter and cool summer, no drought, no waterlogging, convenient management, and prevention of escape and damage. Frog ponds can be built indoors or outdoors, indoor requires ventilation, cool, no direct sunlight, outdoor can be set up Arbor, under the construction of frog ponds, simply built indoors, courtyards or outdoor ponds, are good living places for stone frogs.

Specification requirements of ② frog ponds: artificial breeding stone frogs generally adopt intensive breeding, and attention should be paid to conforming to the living habits of frogs as far as possible, providing water, land, stone caves, feeding and other conditions, so as to create a good living environment and facilitate feeding and management.

Frog pond: the area is generally 410 square meters, the pond height is 0.8m, the water depth is 0.1m to 0.15m, the ratio of water to land area in the pond is 3 ∶ 1, and there are perched stone caves, the bottom of the pond is covered with large pebbles, the light is dark, and the humidity is maintained at 80%, creating an ideal ecological environment for stone frog habitat, promoting its growth and development, thereby improving the spawning rate and fertilization rate.