Mahogany: perianth segments 9, leaf ends often truncate, with a concave lobe on each side
Cherry Blossom
Morphological Characteristics
Corolla ovate-orbicular to orbicular, leaves alternate in simple leaflets, glandular serrated, flowers borne singly on top of the branches or in clusters of 3-6 in umbel-shaped or corymbose inflorescences, produced at the same time with the leaves or first leaves and then flowers, calyx tube campanulate or cylindrical, cultivars are mostly double; fruit red or black, mature in May-June.
Deciduous shrub. Branches densely packed, with fine spines, young branches pilose. Branchlets purple-brown, old branches gray-brown. Leaf blade triangular-ovate to rhombic-ovate, 2-6cm long, 0.8-2.5cm wide, base truncate or broadly cuneate, with 3-5 pinnately deep lobes on each side, the basal 1 pair of lobes split deeper, with irregularly sharply serrated margins. Compound corymbs, peduncles, flower stalks are villous; flowers white, about 1.5cm in diameter; calyx tube outside villous, sepals inside and outside both surfaces glabrous or inner surface apical hairy. Pear fruit deep red, subglobose. Flowering period in May to June, fruiting period in September to October.
Hickory
Morphological features: deciduous small trees, up to 10m high, the dry bark purple-brown, glossy, often with transverse rings, paper peeling when old. Leaves are narrowly ovate-lanceolate, 6~10cm long, serrated and apiculate, with rare glands, light pink or white flowers, fruit spherical, 3cm in diameter, thin and dry flesh. Fruit spherical, 3cm diameter, thin and dry flesh.
Dry willow
Morphological features: Deciduous tree, up to 20m in height, 80cm in diameter at breast height, crown obovate. The crown is obovate. The big branches are obliquely spreading, and the shoots are hairy and then fall off, light yellow or green. Leaves lanceolate or strip lanceolate, apex acuminate, base narrowly rounded or cuneate, glabrous, slightly white below, finely serrate, young leaves with silky hairs glabrescent. Stamens 2, filaments separate, villous at the base, glands 2. Female flower glands 2. Flowering April: fruit ripening April to May .
Reed
Morphological Characteristics
Tall perennial aquatic or wet grass, growing beside irrigation ditches, riverbanks and swamps. The reed plant is tall with well-developed underground creeping rhizomes. The culms are erect, 1-3 meters tall, and often white powdery below the nodes. The leaf sheaths are cylindrical, glabrous or finely hairy. The ligule is hairy and the leaf blades are long linear or long lanceolate, arranged in two rows. Leaves 15-45 cm long, 1-3.5 cm wide. Panicle densely branched, obliquely spreading, inflorescence 10-40 cm long, spikelets with 4-7 florets; glumes 3-veined, one glume shorter, the second slightly longer; first floret mostly male, the rest hermaphroditic; second exalbuminous apex long acuminate, long filiform pilose hairs of basal disk 6-12 mm long; palea ca. 4 mm long, scabrid on the ridge. With long, stout creeping rhizomes, mainly propagated by rhizomes.
Hai Tong
Morphological features
Evergreen shrubs or small trees, up to 3 meters high. Branches and leaves are densely packed, and the crown is chatty. Leaves mostly aggregated at the top of branches, simple leaves alternate, sometimes in whorls at the top of branches, thick leathery narrowly obovate, 5-12 centimeters long, 1-4 centimeters wide, entire, apical obtuse rounded or concave, the base cuneate, the edge is often slightly outwardly reflexed, stalked, the surface of the bright green, the new leaves are yellowish tender. Cymes terminal; flowers white or yellowish green, fragrant, petiole 0.8-1.5 cm; sepals, petals, stamens 5 each; ovary superior, densely pubescent. Capsule subglobose, angular, up to 1.5 cm, green at first, turning yellow, 3-valved at maturity, petals woody; seeds bright red, with mucus. Flowering in May, fruit ripening in September-October.
Honeysuckle
Morphological features: Honeysuckle is a deciduous small tree, often clustered into shrubs, plant shape is complete, up to 6 meters high. Branchlets hollow, single leaves opposite; leaves are ovate-elliptic to lanceolate; apex acuminate, both surfaces of the leaf sparsely pilose. Flowers are borne in axillary pairs, with a 2-lipped corolla. The flowers are white at first and then turn yellow, hence the name "honeysuckle". The berries are spherical and bright red. Flowering period from May to June, fruit ripening period from August to October.
Populus tremula
[Morphological features]
Populus tremula is an evergreen shrub or small tree, with slightly 4-angled branchlets, densely branched leaves, and a spherical crown. The single leaf is opposite, obovate or elliptic, with obtuse teeth on the edge, dark green surface, glossy. Cymes axillary, long pedunculate, flowers greenish white. Capsule spherical, light red, aril orange-red.
Purple acacia
Morphological features
Purple acacia is a deciduous shrub in the genus Acacia of the Fabaceae. It is 1-4m high, clustered, densely branched, straight, with dark gray, smooth skin, gray-brown branchlets with raised rust-colored lenticels, densely pilose when young; the lateral buds are very small, often two superimposed. Leaves alternate, odd-pinnate, leaflets 11-25, ovate, narrowly elliptic, apex rounded, entire, with hyaline oil-glandular dots within leaves. Racemes densely terminal or axillary to branch ends, rachis densely pubescent, calyx campanulate, often with oil gland dots, flag petals blue-purple, wing petals, keel petals are reduced. The pods are short and curved, 7-9mm long, brown, densely covered with verrucose glandular dots, indehiscent, containing 1 seed, the seed is glossy, the weight of 1,000 grains is 10 g. The flowering and fruiting period is May-October.
Tamarisk
Morphological characteristics: Tamarisk is a deciduous shrub or small tree. Leaves are alternate, lanceolate, scale-like, small and dense, light blue-green. Branchlets pendulous, slender as silk, graceful and lovely. Racemes are clustered at the top of the current year's branches, forming paniculate compound inflorescences; flowers pink, blooming in summer and fall, sometimes three times a year. Capsule ripening in October, usually does not bear fruit. The old branches of tamarisk are reddish purple or light brown. As a result of living in a harsh environment, the leaves become very small, densely borne on the branches like scales, each only 1-3 millimeters long. At the top of the green shoots are produced conical inflorescences with small, dense, pink, light and playful flowers. Tamarix has a long flowering period, from May to September each year, constantly pumping out new inflorescences, the old flowers are gone, the new flowers open again. Within a few months, three rise and fall, endless, so some places also called it "three spring willow".
Turtle, loach, shrimp, lobster, bullfrogs, pond fish, river crab habits
1, the turtle's habits
The turtle is amphibious amphibious, with lungs to breathe, the turtle has no gills, out of the water to crawl with the lungs to breathe, there are nostrils, trachea, bronchial tubes and lungs and other perfect respiratory system. It has a perfect respiratory system including nostrils, trachea, bronchial tubes and lungs. The lungs are large and bubbly, spongy, and very adaptable to life in water. The mucous membrane of the turtle's pharyngeal wall is also covered with capillaries for gas exchange in the water, and with the gulping of water from the mouth, gas exchange in the water is also possible. Therefore, during the hibernation period, the soft-shelled turtle can absorb the dissolved oxygen in the water to maintain its life by sticking the tip of its mouth and its tubular nostrils to the surface of the mud and sand close to the bottom of the water. Because the turtle has the above special organs, it can dive underwater for a long time.
In the warm regions of the water system, the turtle's growth period is very long; in the northern regions, when the north wind whistling frost paved the ground, the grass decline and reed failure of the green water cold season, the turtle hibernation submerged in the sand, do not eat and do not move. The soft-shelled turtle usually lurks in the underwater sand, with its head and neck hidden in the body and its eyes gleaming as it peers at the underwater world. When fish and shrimp swim to its side, it will suddenly stretch its neck and attack, and it will not let go of its bite. In the late spring, hot summer and early fall season, the waves are calm and warm, green fungus pavement, they often climb to the shore to sunbathe. Around noon in the hot summer when the wind and waves are calm, they often float to the surface of the water and stick their tubular noses out of the water to breathe air. At the slightest breeze, they immediately dive into the water. In the warm season, every cloudy and rainy day with low air pressure, the turtle also swims to the surface to breathe, and sometimes the whole body is exposed to the water. Especially in the cloudy, pouring rain, rising rivers and waves, there are often dozens of kilograms of old turtles to look around.
The turtle's living habits can be summarized as "Three Happinesses and Three Fearfulnesses", i.e., fear of quietness, fear of the wind, and fear of cleanliness and dirtiness. The turtle is sensitive to the sound of the surrounding environment, as long as there is a slight movement around, the turtle can quickly dive into the silt underwater, so the turtle farm or turtle pond environment must be kept quiet. If the turtle is often frightened, it will be unfavorable to its growth and reproduction.
The turtle is an omnivore that feeds mainly on meat. The main food is small fish, shrimp, snails, mussels, aquatic insects, earthworms, animal spoils and so on. At the same time, it also eats vegetables, grass, fruits and melons. Insufficient food, the same kind can eat each other. Therefore, it is important to categorize the size of the turtle when keeping it, so that different sizes of turtles can not be mixed in the same pool to avoid killing each other and causing losses. Turtles are both voracious and hunger-resistant, and will not die if they don't eat for a long time after a meal. Of course, it relies on its own accumulated nutrients to maintain its life activities, and it must be supplied with sufficient food to accelerate its longevity when it is artificially bred.
The soft-shelled turtle is a thermochromic animal, and is very sensitive to changes in the surrounding temperature. When the outside temperature drops below 15℃, the turtle starts to stop eating and hibernate in the mud and sand under the water (generally from October to April), and the hibernation period is as long as half a year. Therefore, the turtle grows slowly under natural conditions, usually only about 100 grams a year. In order to speed up the turtle's growth, artificial culture often uses heating measures to break the turtle's hibernation habits and speed up the growth rate.
2, the life habits of loach
Loach camp bottom life like to live in the thicker silt in the still water. Inhabiting paddy fields, ponds, lakes and rivers and other places with soft mud. Because of living in the poor light in the mud, eye degeneration, only rely on tentacles to find food. Loach can live in the water or silt with very little dissolved oxygen, in addition to gill respiration, it can also use the skin and intestines to absorb oxygen directly from the air. When the water temperature is high, the air pressure is low or the density is too large, and the dissolved oxygen in the water is insufficient, the loach can jump out of the water to swallow the air and perform intestinal respiration. The suitable water temperature for loach is 20-30℃. When the water temperature is too high or too low, and when the water is shallow in drought, the loach tends to dive into the mud layer to spend the bad environment. Usually, except for the lack of oxygen, disease and bad weather and other reasons, almost not to the water in the middle and upper activities, winter pool water dry, drilling into the soft mud, by a small amount of water to keep the skin moist, and intestinal respiration to maintain life.
The loach is an omnivorous fish. The main food is small crustaceans, insect larvae, water worms, algae and higher plant debris, underwater humus. Juvenile stage prey on animal material, and then turned to omnivorous, adult loach to ingest plant-based bait. When the water temperature is above 15℃, the appetite gradually increases, and when it rises to 25-27℃, the appetite is especially strong and the growth is rapid. Once more than 32 ℃, appetite is reduced. Normally more feeding at night, during reproduction in the daytime, and the female fish feeding increased significantly.
3, the habits of green shrimp
Green shrimp live in freshwater, and can adapt to low salinity waters. Water quality requires neutral or alkaline. Green shrimp in rising water temperatures, in shallow water along the pond, riverbank activities, fall and winter to move to deeper water, due to the deep-water dissolved oxygen, bait biological conditions, the green shrimp rarely enter the center of the pond in deep water. Green shrimp adapted to the latent depth of 1-1.5 meters. Green shrimp swimming ability is weak, usually in the bottom of the pond and water plants climbing and crawling. Prefer to hide during the day, and at night out of the activities of foraging. Overwintering period is lurking in the water under the gravel, mud caves, tree branches or grass, before and after the dawn out of the activities.
The shrimp is an omnivore with animal food. Different developmental stages of different food habits. After the larvae hatch, from the first molt to the eighth and ninth molt stage for the larval development period, the total time of 20-30 days (i.e., May-June each year), an average of 1-3 days every molt 1 time, every molt, shrimp body that is growing up once, the food at this stage is mainly organic debris and unicellular algae, especially algae in the filamentous algae, bulrush and diatoms in the solid algaes, and others also include the water unsegmented larvae and insect larvae, etc., or artificially fed egg yolks and soy milk. After 4-5 molts the larvae can be fed cooked fish or other chopped animal feeds. The juvenile shrimp stage is followed by the juvenile shrimp stage (end of metamorphosis to sexual maturity), and the habit of life is transferred to benthic. Molt every 7-11 days, this stage for 35-45 days. This stage of the food is mainly small aquatic insects, worms, animal carcasses, etc., but also like to eat artificially fed crushed shellfish, fish, shrimp, silkworm pupae and other animal feeds and bean cake, rice bran, watercress, vegetable leaves and other plant feeds, including fishmeal, locusts earthworms, fly maggots, small clams, etc., and plant feeds, including soybean cake, soybean meal, etc.. Adult blue shrimp are particularly fond of sugar dregs. When there is not enough feed, the green shrimp will kill each other.
Green shrimp voracious, fast-growing, palatable feed input, 2-3 minutes that can fill the whole stomach, but the total feeding intensity depends on the water temperature. Generally in March, when the water temperature reaches 14 ℃ that is the beginning of feeding, April-October feeding intensity is the largest, December into the wintering stage, that is, very little feeding, only a small amount of feeding when the temperature rises.
Turtle, loach, shrimp, lobster, bullfrogs, pond fish, river crab habits
1, the turtle's habits
The turtle is a morphing animal amphibious, with the lungs to breathe, the turtle has no gills, out of the water to crawl with the lungs to breathe, there are nostrils, trachea, bronchial tubes and the lungs, such as a perfect respiratory system. It has a perfect respiratory system including nostrils, trachea, bronchial tubes and lungs. The lungs are large and bubbly, spongy, and very adaptable to life in water. The mucous membrane of the turtle's pharyngeal wall is also covered with capillaries for gas exchange in the water, and with the gulping of water from the mouth, gas exchange in the water is also possible. Therefore, during the hibernation period, the soft-shelled turtle can absorb the dissolved oxygen in the water to maintain its life by sticking the tip of its mouth and its tubular nostrils to the surface of the mud and sand close to the bottom of the water. Because the turtle has the above special organs, it can dive underwater for a long time.
In the warm regions of the water system, the turtle's growing period is very long; in the northern regions, when the north wind whistling frost paved the ground, the grass decline and reed failure of the green water cold season, the turtle hibernation submerged in the sand, do not eat and do not move. The soft-shelled turtle usually lurks in the underwater sand, with its head and neck hidden in the body and its eyes gleaming as it peers at the underwater world. When fish and shrimp swim to its side, it will suddenly stretch its neck and attack, and it will not let go of its bite. In the late spring, hot summer and early fall season, the waves are calm and warm, green fungus pavement, they often climb to the shore to sunbathe. Around noon in the hot summer when the wind and waves are calm, they often float to the surface of the water and stick their tubular noses out of the water to breathe air. At the slightest breeze, they immediately dive into the water. In the warm season, every cloudy and rainy day with low air pressure, the turtle also swims to the surface of the water to breathe, and sometimes the whole body is exposed to the water. Especially in the cloudy, pouring rain, rising rivers, waves, there are often dozens of kilograms of the old turtle to explore the neck and look.
The turtle's living habits can be summarized as "Three Happinesses and Three Fearfulnesses", i.e., it is afraid of quietness, afraid of the wind, and afraid of cleanliness and dirt. The turtle's reaction to the sound of the surrounding environment is sensitive, as long as there is a slight movement around, the turtle can quickly dive into the silt underwater, so the turtle farm or turtle pond environment must be kept quiet. If the turtle is often frightened, it will be unfavorable to its growth and reproduction.
The turtle is an omnivore that feeds mainly on meat. The main food is small fish, shrimp, snails, mussels, aquatic insects, earthworms, animal spoils and so on. At the same time, it also eats vegetables, grass, fruits and melons. Insufficient food, the same kind can eat each other. Therefore, it is important to categorize the size of the turtle when keeping it, so that different sizes of turtles can not be mixed in the same pool to avoid killing each other and causing losses. Turtles are both voracious and hunger-resistant, and will not die if they do not eat for a long time after a meal. Of course, it relies on its own accumulated nutrients to maintain its life activities, and it must be supplied with sufficient food to accelerate its longevity when it is artificially bred.
The soft-shelled turtle is a thermochromic animal, and is very sensitive to changes in the surrounding temperature. When the outside temperature drops below 15℃, the turtle starts to stop eating and hibernate in the mud and sand under the water (generally from October to April), and the hibernation period is as long as half a year. Therefore, the turtle grows slowly under natural conditions, usually only about 100 grams a year. In order to speed up the turtle's growth, artificial culture often uses heating measures to break the turtle's hibernation habits and speed up the growth rate.
2, the life habits of loach
Loach camp bottom life like to live in the thicker silt in the still water. Inhabiting paddy fields, ponds, lakes and rivers and other places with soft mud. Because of living in the poor light in the mud, eye degeneration, only rely on tentacles to find food. Loach can live in the water or silt with very little dissolved oxygen, in addition to gill respiration, it can also use the skin and intestines to absorb oxygen directly from the air. When the water temperature is high, the air pressure is low or the density is too large, and the dissolved oxygen in the water is insufficient, the loach can jump out of the water to swallow the air and perform intestinal respiration. The suitable water temperature for loach is 20-30℃. When the water temperature is too high or too low, and when the water is shallow in drought, the loach tends to dive into the mud layer to spend the bad environment. Usually, except for the lack of oxygen, disease and bad weather and other reasons, almost not to the water in the middle and upper activities, winter pool water dry, drilling into the soft mud, by a small amount of water to keep the skin moist, and intestinal respiration to maintain life.
The loach is an omnivorous fish. The main food is small crustaceans, insect larvae, water worms, algae and higher plant debris, underwater humus. Juvenile stage prey on animal material, and then turned to omnivorous, adult loach to ingest plant-based bait. When the water temperature is above 15℃, the appetite gradually increases, and when it rises to 25-27℃, the appetite is especially strong and the growth is rapid. Once more than 32 ℃, appetite is reduced. Normally more feeding at night, during reproduction in the daytime, and the female fish feeding increased significantly.
3, the habits of green shrimp
Green shrimp live in freshwater, and can adapt to low salinity waters. Water quality requires neutral or alkaline. Green shrimp in rising water temperatures, in shallow water along the pond, riverbank activities, fall and winter to move to deeper water, due to the deep-water dissolved oxygen, bait biological conditions, the green shrimp rarely enter the center of the pond in deep water. Green shrimp adapted to the latent depth of 1-1.5 meters. Green shrimp swimming ability is weak, usually in the bottom of the pond and water plants climbing and crawling. Prefer to hide during the day, and at night out of the activities of foraging. Overwintering period is lurking in the water under the gravel, mud caves, tree branches or grass, before and after the dawn out of the activities.
The shrimp is an omnivore with animal food. Different developmental stages of different food habits. After the larvae hatch, from the first molt to the eighth and ninth molt stage for the larval development period, the total time of 20-30 days (i.e., May-June each year), an average of 1-3 days every molt 1 time, every molt, shrimp body that is growing up once, the food at this stage is mainly organic debris and unicellular algae, especially algae in the filamentous algae, bulrush and diatoms in the solid algaes, and others also include the water unsegmented larvae and insect larvae, etc., or artificially fed egg yolks and soy milk. After 4-5 molts the larvae can be fed cooked fish or other chopped animal feeds. The juvenile shrimp stage is followed by the juvenile shrimp stage (end of metamorphosis to sexual maturity), and the habit of life is transferred to benthic. Molt every 7-11 days, this stage for 35-45 days. This stage of the food is mainly small aquatic insects, worms, animal carcasses, etc., but also like to eat artificially fed crushed shellfish, fish, shrimp, silkworm pupae and other animal feeds and bean cake, rice bran, watercress, vegetable leaves and other plant feeds, including fishmeal, locusts earthworms, fly maggots, small clams, etc., and plant feeds, including soybean cake, soybean meal, etc.. Adult blue shrimp are particularly fond of sugar dregs. When there is not enough feed, the green shrimp will kill each other.
Green shrimp voracious, fast-growing, palatable feed input, 2-3 minutes that can fill the whole stomach, but the total feeding intensity depends on the water temperature. Generally in March, when the water temperature reaches 14 ℃ that is the beginning of feeding, April-October feeding intensity is the largest, December into the overwintering stage, that is, very little feeding, only a small amount of feeding when the temperature rises.
4, lobster habits
Red crayfish physiological adaptations are strong, including resistance to low oxygen and high temperature, except for eggs and larvae. Habitat of water bodies for rivers, lakes, reservoirs and ponds. During the day, they lurk in the water body where they can be trapped and sheltered, and come out in the evening and before dawn to forage for food, preferring to be active at night, and live in benthic crawling life, preferring to live in groups. During the mating season, all shrimp appear to be very active during the day. Tests have proved that the red crayfish can survive at a water temperature of 11 ℃, in the water temperature of 5 ℃ under the conditions of survival for 3 weeks, but if the long-term life in the water temperature of 9 ℃ conditions, will produce a large number of deaths. The shrimp will make holes in unfavorable living conditions, and it has been observed that this shrimp will make holes during overwintering in softer pool bottom mud.
The red crayfish is more resistant to low dissolved oxygen, such as dissolved oxygen in the water for 1 mg / liter can still survive, in the humid micro-water state, but also survive for a longer period of time, in the breeding or overwintering process, often found in the red crayfish on the embankment. Juvenile and egg-conceiving shrimp should not be in low dissolved oxygen, otherwise it will lead to the death of juvenile and egg embryo. Therefore, the dissolved oxygen in the breeding process generally should not be less than 4 mg / liter, in the incubation process dissolved oxygen should also be higher.
The red crayfish is an omnivore, in natural conditions, mainly ingesting organic debris, aquatic algae, filamentous algae, aquatic plants, roots, leaves and debris, especially like to eat juicy and fat green plants such as water lily, water hyacinth, Malayan eye, green pimpernel and bitter grass. Animal food likes to eat water earthworms, earthworms, aquatic insect eggs, nymphs, snails, mussels and fish. In artificial rearing, moderate feeding of commercially available feed can be ingested.
The red crayfish will molt several times throughout the growth process from baby shrimp to adult shrimp. In the appropriate environmental conditions, the hatchling shrimp, each molt time interval is shorter, in 1-2 days molt 1 time, as the body grows, the time between molt is also extended. During the moult, the shrimp are most vulnerable to hostile organisms or the same kind of predators, is the shrimp caused by the risk of death, if during this period of human capture, moving, poor water quality or lack of oxygen is easy to die.
5, the habits of bullfrogs
Bullfrogs are metamerism, life after spawning, egg hatching as tadpoles, living in the water, after complete metamorphosis to become young frogs, began amphibious life. The bullfrog likes to live in the ditch and pond, if there are floating plants on the surface of the water, it will lie on the water, show its head on the surface, and dive into the water when disturbed. Bullfrogs are often a few or dozens of group living **** habitat, after adapting to the environment, generally no longer migrate. In April-September every year, bullfrogs begin to hold pairs of eggs, fertilized eggs hatch into tadpoles in 3-4 days, living in the water, breathing with gills. After becoming young frogs, they live an amphibious life. When the water temperature drops below 10℃ in winter, the bullfrogs hide in caves or silt and enter hibernation. When the temperature rises above 10℃, they come out again to forage for food.
The bullfrog is a thermotropic animal, and its body temperature changes with the outside temperature. Under natural conditions, the tadpoles can survive in water temperature of 2-35℃; the most suitable water temperature for growth and development is 23-25℃; tadpoles will die one after another when the water temperature exceeds 35℃; tadpoles do not feed when the temperature is lower than 15℃; and they will enter hibernation when the water temperature is lower than 9℃. The suitable temperature for adult frogs to feed and grow is 20-30℃, and the optimal temperature is 25-30℃. When the water temperature drops below 18℃ in fall, the appetite and activities will be weakened; feeding will stop below 15℃; hibernation will start at 9-10℃. When the water temperature exceeds 32℃, the activity and feeding are obviously weakened, and when the water temperature exceeds 35℃, the bullfrogs die one after another.
The skin of bullfrogs has no protective tissue to prevent evaporation of water, so it can not leave the water for a long time, and it can be killed in dry air or sunshine for too long. The temperature of the skin directly affects the reproduction and ovulation of bullfrogs, and the growth and development of tadpoles need to be carried out in the water, so water is the ecological needs of bullfrogs. Bullfrogs are generally photophobic, and prefer to live in sunny environments that are favorable for growth, development and reproduction. However, it avoids direct sunlight and prefers low light, more like blue light.
The tadpoles of bullfrogs feed on organic debris and zooplankton, and the juvenile frogs and adult frogs feed on certain aquatic and terrestrial animals. When feeding, they choose safe, secluded and bait-rich shallow water, or land, wait patiently, and when they find a live object to be preyed upon, they jump and catch it by pouncing. When it is far away from the frog, it gently crawls to the target and waits for the opportunity to catch it. In the lack of bait, bullfrogs have the phenomenon of big eating small.
6, pond horn fish habits
The pond horn fish is also called the leather beard catfish: flat head, flat side of the back of the head, the fish body is smooth and scale-free. The body color is dark gray or black, with gray and black eroded patches on both sides of the body, and the chest and abdomen are white. The mouth is wide, transverse, sharply toothed, and slightly under the mouth, with 4 pairs of tentacles and 2 pairs of upper and lower muzzles. The upper and lower jaws and plow bones are densely covered with downy fine teeth.
Native to the Nile Basin in Africa, preferring warmth and fear of cold, suitable for growth and water temperature of 18-32 ° C. The most suitable for the growth of water temperature of 22-32 ° C, 15 ° C or less intake is very little, slow growth. When the water bubbles down to the critical 7 ℃ will freeze to death.
Living in the lower layers of the water, the night activity is agile, feeding exuberant. Because the leather beard catfish has a dendritic (also known as coral-like) gills on the respiratory auxiliary organs and skin respiratory function, able to survive in the general fish can not survive in low-oxygen or shallow and polluted waters, as long as its body surface to keep wet, leave the water for a few days can still survive. The leatherbeard catfish is able to crawl on land due to a hard, thick spine on the outer edge of its pectoral fins, and it is able to cross obstacles and migrate from one pool of fish to another. Its four pairs of mouth whiskers are quite long and flexible.
The leather-bearded catfish is an omnivorous fish that feeds mainly on animals. It is a voracious eater and eats all at once, and has the habit of competing for food in groups.
7, the habits of the crab
The natural growth of the river crab is generally burrowing or reclusive. In the abundance of food, full of food, they are to avoid the enemy, often living in a cave. When there are no cave conditions, they hide in the gravel or grass. River crabs usually like to live in clean water, abundant water plants in the rivers and lakes, in the pond, they are often hidden in the silt at the bottom of the pond. River crabs come out day and night, in the bait rich, environmentally suitable to settle, once mature, will abandon the cave away.
River crabs grow in freshwater and reproduce in seawater. After entering freshwater, the crab seedlings usually live in bait-rich rivers and lakes for about 18 months, and their gonads gradually mature. Mature river crabs start to spawn in the offshore area where sea and freshwater mix in late fall and early winter, which is the reproductive migration. Female crabs can lay eggs soon after mating, and the eggs are attached to the hairs of the abdominal limbs of the females in bunches, piling up in the abdomen until the larvae hatch. This type of crab is called "egg-holding crab". River crabs can produce tens of thousands to millions of eggs at a time, and can produce 2-3 times.
In nature, it takes four months for fertilized eggs to hatch, and the hatch rate can be about 90%. The newly hatched larvae are small and shaped like water fleas, called flea-like larvae. The flea-like larvae molt five times and grow into crab fry (large-eyed larvae) in about 35 days, which molt once more to become juvenile crabs. The crab that has just shed its shell is called soft-shelled crab, which is incapable of feeding and defending itself against enemies, and its shell is hardened only after 1-2 days, at which time it is gradually active, and its body increases significantly after shedding its shell. After the river crab reproduction, the body will soon be aging, death.
The river crab's diet is very mixed, it eats meat and vegetables, and likes to eat fish, shrimp, snails, worms, earthworms, insects and their young early and other animal food, but also eat the injured or just moulted the same kind of, holding the egg crab in the hungry, but also to take the eggs as food. In the natural environment, river crabs can easily get for the water plants, so the plant food is mainly.
The river crab is very voracious and has a large appetite and strong digestive ability. In the food can eat a lot of rich, and no food, a few days or even a month do not eat, but also not to starve to death, this is because in the satiety, will be excess nutrients stored in the liver, just off the shell of the "soft-shelled crabs" is the pre-stored nutrients to maintain life. During the overwintering period in the cave, it stops or reduces the food intake.
River crabs are not only gluttonous, but also have the habit of fighting for food. In order to compete for a meal, often kill each other.
1, earthworm habits
Earthworms are warm, wet, quiet, afraid of light, afraid of salt, afraid of tannin flavor of the nocturnal annelid. Daytime habitat in the moist, good ventilation in the soil. Roosting depth is generally 10-20 centimeters, the night out of the activities of foraging. It feeds on decaying leaves, withered grass, vegetable debris, crop stalks, poultry and animal feces, melon and fruit peelings, waste from paper mills, breweries or flour mills, and household waste from residential areas. They are particularly fond of sweets, such as rotten fruits, and acidic materials, but not bitter or tannic materials, and salt has a poisonous effect on them. Earthworms are aerobic animals. Response to the surrounding environment is very sensitive, suitable for living in 15 degrees ~ 25 degrees, humidity in 60% ~ 70%, pH value of 6.5 ~ 7.5 of the loose soil, the conditions are not suitable, will crawl out to escape.
2, the snail's habits
The snail is a gastropod mollusk, preferring to live in warm winters and cool summers, soft substrate, bait-rich, fresh water in the waters, especially in the micro-flow of water. The snail is omnivorous, feeding on microorganisms and organic matter in the water or young stems and leaves of aquatic plants. The snail prefers nocturnal activities and feeds vigorously at night.
3, the centipede's habits
In natural conditions, centipedes generally inhabited in the daytime in the hillside, field, roadside or overgrown places, or inhabited and along the woodpile and tile crevice, or dark corners. Particularly like in the shady, old ground, activity in the humus, stones, rubble between. The basic feature of activity is diurnal. It stops feeding when the temperature is below 10 degrees Celsius and enters hibernation at minus 7 degrees Celsius. Centipede is a typical carnivore, eating a wide variety of food, especially like to eat a variety of insects and their eggs, pupae, larvae, etc., but also ate worms, earthworms, snails, and a variety of livestock and poultry, aquatic animals, meat, viscera, blood, cartilage, etc., but also ate fruit leather, potatoes, carrots, young vegetables, etc., other such as milk, bread, etc. can also be used as centipede food. Exhausted me