Do lobsters grow in the sea and where do crayfish grow

Lobsters are found on all continents of the world and have a wide variety of species, generally inhabiting the offshore seabed or shore of warm oceans. There are at least 8 species of lobsters produced in China. The main ones are:

Chinese lobster, olive color, produced in the coastal area of Guangdong, has a large body size and a large output; Ripple lobster, similar in color and shape to Chinese lobster, is produced in the coastal area of the South China Sea; Dense lobster, the color and shape are the same as the above, produced in Hainan Island and Xisha Islands; Splendid lobster, with beautiful colorful patterns, up to 4 kg - 5 kg, produced in the area of Zhoushan Islands in Zhejiang, the output is not large. In addition, there are Japanese lobsters, variegated lobsters, less-spiny lobsters, long-legged lobsters, etc., but the production is very small. American lobster (Homarus americanus) and Norwegian lobster (Nephrops norvegicus) are the most valuable and are often marketed as live lobsters; The edible part is the abdomen and chelae with many muscles.

True lobsters are found in all oceans and deeper waters except the polar regions. The European lobster (homarus gammarus, i.e., European crayfish) is green in color and is found on the rocky seafloor of the Atlantic coast of Europe and the Mediterranean Sea. The Cape of Good Hope lobster (Homarus capensis) is found in the waters around South Africa, where it can reach a length of 10-13 centimeters and has little commercial value.

The lobster that grows in the sea is the big lobster, and the kind that is usually eaten and fried generally grows in the ditch or pond, and the environment is dirty and the faster it reproduces.

Crayfish generally grow in streams, ditches, swamps, wetlands, ditches, ponds, lakes and other places, crayfish like to live in shallow water bodies and abundant aquatic plants.

Crayfish is a kind of shrimp that grows in fresh water, crayfish has a strong ability to survive, and it can be found in many waters, so where does crayfish grow? Let's find out.

Details: Crayfish has a wide range of adaptability, has a wide range of suitable growth temperatures, and can grow and develop normally when the water temperature is 10-30. It can also withstand high temperatures and severe cold, can withstand high temperatures above 40, and can also survive the winter safely when the temperature is below -14.

Please click Enter a description.

Crayfish like to burrow during the breeding season. The cave is located about 20 cm above the surface of the pond and has a depth of 60 cm to 60 cm, with a small amount of stagnant water in it to maintain humidity, and the entrance is generally sealed with a mud cap to reduce water loss. On summer nights or after heavy rainstorms, it has a habit of climbing ashore and crossing dikes and entering other bodies of water.

Please click Enter a description.

Crayfish can reproduce all year round, with the peak period from May to September. Crayfish are dioecious and have significant secondary sexual characteristics. It can be distinguished from the shape of the abdominal swimming limbs, the first swimming limb of the male shrimp abdomen is specialized into a sympathic spine, while the first swimming limb of the female shrimp is specialized into a sperm hole. Secondly, there was a significant difference between the two chelicerae, the male had a thick chelicerae and a bright red verrucous protrusion on the outside of both ends of the chelicera, while the female shrimp had a smaller chelicerae and no obvious verrucous protrusions. Thirdly, the male shrimp chelicerae are thicker than the female shrimp, and the individual is also larger than the female shrimp.

Please click Enter a description.

Crayfish are omnivores, and in terms of eating habits, crayfish prefer to eat mud at the bottom of the river, and like to eat small fish or other aquatic organisms that have died. It mainly eats plants, small fish, shrimp, plankton, benthic organisms, and algae can all be used as its food.

Please click Enter a description.

Since most crayfish are very resistant to pollution, they can still survive in water with high levels of polluting toxins. Stocking in the aquarium can also effectively remove fish excrement and moss, which has a great contribution to the remediation of the hydrological environment.

Please click Enter a description.

1. Suitable water temperature: Lobsters generally grow in waters with a water temperature between 16-33 degrees. 2. Sufficient oxygen

Lobsters grow in water bodies with a high dissolved oxygen content. 3. Abundant bait: There should be a large number of aquatic animals and plants in the water where lobsters grow to provide bait.

4. Clean water quality: Lobsters grow in waters with clean water quality and no heavy metal ions.

1. The water temperature is suitable

The water body of lobster is highly adaptable, it can survive in the water environment between 1-40 degrees, its suitable temperature conditions for growth are between 16-33 degrees, when the temperature is lower than 20 degrees or higher than 32 degrees, the growth rate of lobster will decrease.

2. Sufficient oxygen

Lobsters generally grow in a water environment with high dissolved oxygen content, sufficient oxygen can promote their respiration, keep them alive, when the water body is hypoxic, lobsters will crawl on aquatic plants or the shore to breathe.

3. Abundant bait

The water environment where lobster grows must have sufficient bait, such as benthic algae, filamentous algae, aquatic insects, small trash fish, shellfish, etc., only sufficient food to ensure the reproduction of lobsters.

4. Clean water quality

Lobsters can not contact heavy metal ions, when heavy metals combine with the proteins in their bodies, inhibit the activity of enzyme plums, and directly destroy the normal physiological effects of lobsters, so they generally grow in waters with clean water and no heavy metal ions.

Lobsters can survive in lakes, rivers, ponds, canals, paddy fields and other waters. It is very resistant to stress, and can survive even in some water bodies where it is difficult for fish to survive, such as some domestic sewage, light industrial wastewater, and in ditches and channels in areas where pesticides are applied.

The suitable water temperature for the normal growth of lobster is 24 30, the pH value of the water quality is within the range, and the dissolved oxygen can still survive normally when it is lower, and the normal growth requires dissolved oxygen to be more than 3ml l.

Lobsters have a strong flow of water, like new water and living water, go upstream against the water, and like to live in groups. In the ponds, groups are often clustered around the water intake. In heavy rainy days, the shrimp can reverse the current to the shore for a short stay or escape, and the water environment is not when the water environment is uncomfortable, it will also climb to the shore to inhabit, so the breeding site should have anti-escape fence facilities.

The big lobster in the sea is the crayed lobster.

The lobster has a distinct dorsal sulcus on the back of the cephalothorax from the frontal horn to the posterior end, and the thorax is flanked by low subdorsal ridges. The posterior cervical sulcus is obvious. There are no ridges other than marginal ridges (no strong posterior ridges behind antennal spines).

The abdominal carapace is smooth and furrowed, and there are no ridges between the dorsal and lateral carapaces. There is no middle spike in the first abdominal segment of the abdomen. The posterior part of the caudal segment is narrow, the terminal margin is rounded and convex, and the posterior corner has a spine.

The outer limbs of the second jaw foot have a multi-segmented whip, and the first pair of foot chelae vary from left to right, with a smooth surface, no grooves or ridges, and only a few spines.

The chelicera and two fingers are flattened, broad, and particularly thick, and the first pair of foot chelae is small, and the first step foot is simple and wild. The thorax is narrow, and the female has a cohesive device between the feet in the fourth step. The first abdominal limb becomes a junction in the male, divided into two segments but immobile.

The second abdominal limb of the male is thick and elongated, with spines at the end. The dorsal lobe of the protolimb of the caudal limb ends with a tooth, the inner and outer limbs are not longitudinally dorsal, the outer limb has a transverse slit, and there is a small spine at the outer terminal corner of the basal ganglia.

Lobsters can survive in lakes, rivers, ponds, canals, paddy fields, and even in some water bodies where it is difficult for fish to survive. The lobster has a strong ability to adapt to dissolved oxygen in the water body, and in the hypoxic environment of the water body, it can not only climb ashore, but also lie on its side on the surface of the water with the help of floating plants or aquatic plants in the water, and use the gills on one side of the body to breathe to survive.

Lobster (scientific name: palinuridae) is a common name for 19 species of lobsters in 4 genera of the family of carapaces and decapods of the phylum Arthropods. It is also known as prawns, dragon head shrimp, shrimp kui, sea shrimp, etc.

It has a thick cephalothorax, a hard shell, colorful colors, a short abdomen, a body length of 20 cm and 40 cm, a weight of up and down kilograms, and no chelae, which is the largest type of shrimp. The heaviest can reach more than 5 kilograms, and is known as the lobster goby.

The body is thick cylindrical, dorsoventrally slightly flattened, cephalothorax developed, thick and spiny, with a pair of powerful supraocular spines on the anterior margin**, with a closed gill compartment. It is mainly distributed in tropical waters and is a valuable seafood. Eight species have been found in China, with freshwater lobsters producing the most abundantly.

Lobsters are native to Central and South America and northeastern Mexico. Distribution status in China: It has expanded to Anhui, Hubei, Shanghai, Jiangsu, Hong Kong, Taiwan and other places, forming a large number of natural populations.