CATDOLL : CATDOLL: To what class of vertebrates does the stone frog belong?

To what class of vertebrates does the stone frog belong?

The classification units of organisms from small to large are: species, genus, family, order, class, phylum, and kingdom. Among them, species is the smallest unit and kingdom is the largest unit.

Chinese name: Rana spinosa

Chinese alias: stone frog

Binomial name: Partridge

Kingdom: Animalia

Phylum: Chordata

Subphylum: Vertebrata

Class: Amphibia

Subclass: Sliprocephala

Order: Anura

Suborder: Anisomorpha

Family: Ranidae

Genus: Rana

Species: Stone frog

What do stone frogs eat?

The high nutritional value of stone frogs is well known. As they have become a popular delicacy, stone frog breeding has also become a hot industry. So what do stone frogs like to eat? Let's take a look.

What do wild stone frogs eat?

The newly hatched tadpoles of stone frogs rely on yolk sacs for nutrition for 4 to 5 days. When the yolk is consumed, they start to forage for food. The food of young frogs mainly consists of mosquitoes, small insects and insect larvae. When they reach adult frogs, their food range is very wide. A dissected observation of 47 adult frogs revealed 57 kinds of food in their stomachs and intestines, such as insects, centipedes, bee spiders, millipedes, snails, clams, shrimps, crabs, miscellaneous fish, sand loaches, as well as earthworms, young snakes, small birds, etc.

What do stone frogs eat when they are raised artificially?

After breaking the membrane, the tadpoles of the stone frog gradually grow up relying on the energy in the eggs in the first three days. Ten days after the birth of the tadpoles, they feed on egg yolks, soy milk, etc. After 20 days of age, they gradually switch to cooked plant and algae feeds, such as potato stems and leaves, melon fruit leaves, rice and fresh aquatic plants. The young frogs are mainly fed with active feeds such as small maggots, small mealworms, and small maggot butterflies. Adult frogs mainly eat earthworms, mealworms, maggots, etc.

Feeding tips for stone frogs

1. Stone frogs mainly feed on animal food such as mosquitoes, insects, etc. Stone frogs usually come out to look for food at night and hide in caves to rest (for digestion and absorption) during the day. Many people are curious about why stone frogs like to hunt at night. Let's take a detailed look at the main reasons and their food requirements.

2. The stone frog has poor eyesight and can only prey on live baits that are moving. It will not eat dead food even if it is placed near its mouth. When it finds food, it will suddenly jump up, pounce on the food, throw out its mucus-covered tongue to catch the food, and quickly roll it into its mouth.

3. The newly hatched tadpoles rely on the yolk sac for nutrition for 4 to 5 days. When the yolk is consumed, they start to look for food. After anatomical observation, the intestines of tadpoles contain plant debris, cyclotia, filamentous algae, water spongiosum, moss, paramecium, ciliate, water flea, rotifer, diatom, dinoflagellates, golden algae, etc. When artificially reared, some baits with high protein content can be fed, such as egg yolk, soy milk and fish meal.

Stone frog breeding living environment

1. Stone frogs are reptiles that are cold-resistant but not heat-resistant. Their suitable temperature is 15-25℃. If the water temperature is too high, they will show abnormalities or even die. In the cold winter, stone frogs hibernate. If the water temperature is higher than 12℃ in the cold winter, some stone frogs will lie at the entrance of the cave or jump out of the cave to move around.

2. The quality of the environment directly affects the growth, development and reproduction of stone frogs. The frog pond is not restricted by location. Generally speaking, the breeding site should be selected in a place with good water quality, convenient drainage and irrigation, quiet environment, warm winter and cool summer, no drought or waterlogging, easy management, and escape and pest prevention.

3. Stone frogs are cold-blooded animals. They have no ability to regulate body temperature or keep warm. Their body temperature changes with the external temperature. The suitable growth temperature of stone frogs is 18-26℃, and the optimum temperature is 24-25℃. Spring and autumn are the seasons when they are most active, eat the most, and grow the fastest. April to June and August to September are the best times for reproduction. When the water temperature exceeds 30℃, feeding activities decrease. When the water temperature drops to 12℃, the frog's metabolism is very weak and it enters hibernation. During hibernation, the frog closes its eyes, does not eat or move, relies on fat bodies to maintain life activities, and does not respond to external stimuli. If the water temperature rises to a suitable temperature during hibernation, the frog will become active again. The lethal high temperature of adult stone frogs is around 31℃, which varies in different seasons. Stone frogs can also tolerate a long-term 0℃ environment, but the water cannot freeze. Ice and lack of oxygen will cause the stone frog to die.

4. Frog ponds can be built indoors or outdoors. The indoor area should be well ventilated, cool and without direct sunlight. Outdoors, a pergola can be set up with a frog pond underneath. A pond built indoors, in a courtyard or outdoors can be a good living place for stone frogs.

From the above we know what stone frogs eat as well as some key points and environmental requirements for breeding. Breeding stone frogs is not a very difficult thing. The main thing is to ensure that its living environment is reasonable and healthy, so that high-quality stone frogs can be bred and higher profit value can be created.

What the stone frog eats at different stages include: egg membrane, unfertilized eggs, high-protein juice bait, egg yolk, soy milk, potato stems and leaves, melon fruit leaves, rice, fresh aquatic plants, small fly maggots, small mealworms, small maggot butterflies, etc.

Stone frogs like to eat live animal baits, and do not eat or eat less dead animals and other immobile feeds. Because of its special vision, it can only see moving feeds. In its natural state, stone frogs have a wide range of diets. In addition to insects, centipedes, spiders, millipedes, snails, snails, clams, earthworms, and shrimps, they also prey on crabs, miscellaneous fish, loaches, young snakes, small birds, small fish, shrimps, and other insects.

What do stone frogs eat? Of course, mealworms are indispensable. Mealworms are commonly known as mealworms. They are juicy soft-bodied animals with a fat content of 50%. In addition, mealworms also contain a variety of trace elements such as phosphorus, potassium, iron, sodium, aluminum, and 16 kinds of amino acids necessary for animal growth. Every 100 grams of dry mealworms contains up to 874.9 mg of amino acids. The various nutritional components of mealworms rank first among all kinds of feeds. According to measurements, the nutritional value of 1 kg of mealworms is equivalent to the nutritional value of 25 kg of wheat bran, 20 kg of mixed feed and 1,000 kg of green feed. Mealworms are known as "protein feed treasures."