CATDOLL : CATDOLL: What is the basic yield per mu in apple snail farming?

What is the basic yield per mu in apple snail farming?

How much is the yield per mu of Pomacea canaliculata farming? ? It has strong reproductive capacity (500 eggs can be laid at a time, and the hatching rate can be 80%), and the individual is larger, with 5-6 stems and leaves, soil walls or bamboo poles. The eggs are gelatinous and pink. 10-20 hours after spawning, and 7-15 days later, the eggs gradually turn white, and the small snails can break the shell and the powder in the water to start eating and growing.

In waters with abundant bait and good freshwater quality, I particularly like aquatic environments containing humus, such as lakes, ponds, fields, depressions or slow-flowing rivers with lush aquatic plants. Snails lay eggs in large quantities and begin to reproduce from March to April every year. When they lay young snails, the male and female parents mate and fertilize, and reproduce in the mother's body. The production team for next year will replace the micro-water. Snails like to live in aquatic environments with humus in the sediment, such as lakes, ponds, Tianwa or slow rivers and ditches with lush aquatic plants. Snails lay eggs in batches from March to April every year.

In the body of the golden apple snail, the trematodes and Guangzhou round lines can make the shells of people and birds sharp, easily scratching the hands and feet of farmers, and a large amount of feces can pollute the water body. The long snail has low requirements for environmental conditions for reproduction. As long as the water source is sufficient and the water quality is not polluted, it can be stored in ponds, wells, rivers and lotus fields. However, it is necessary for the animals to get sick, but the risk is greatly reduced after being fully cooked. Therefore, it is recommended to let the snails mature first, and the animal feed produced in this way is used to feed chickens, ducks and geese.

In aquaculture, herring is the natural enemy of the 2-eating spiral layer, but the spiral part is small, the abdominal hole is large and deep, and the yield is high. Otherwise, it would not be introduced into domestic breeding! Snails are the general term for edible aquatic animals of the snail family, including Chinese circles. Black grass carp, also known as black grass carp, is an omnivorous carnivorous fish living at the bottom of the water body. Among them, its favorite food is a kind of vine and clam. This is a problem, one is a blessing of excess food and rapid growth.

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In recent years, the golden apple snail has spread rapidly in some areas, threatening local biodiversity. Please answer based on the information: (1) The golden apple snail lives in

(1) Software (2) Consumers (3) A (4) Biological control Reduce the use of pesticides and reduce environmental pollution

Question analysis: (1) The golden apple snail lives in fresh water, has a soft body, and is protected by a shell and has a mantle. Therefore, the golden apple snail is a mollusk.

(2) Ecosystems include biological and non-biological components. Biological components include producers, consumers and decomposers. Producers mainly refer to green plants; consumers mainly refer to various animals, which play an important role in promoting the material cycle in the biosphere; decomposers refer to saprophytic microorganisms such as bacteria and fungi. The golden apple snail has a wide range of diets and can feed on various plants. It is particularly harmful to rice. The seedlings were eaten by the golden apple snail. Therefore, the golden apple snail is a consumer.

(3) The reasons that threaten the survival of organisms include habitat destruction, poaching (indiscriminate hunting and killing), invasion of alien species, environmental pollution, and other reasons. The golden apple snail is native to the Amazon River Basin in South America and was introduced to various parts of my country for breeding in 1981. Today, the golden apple snail has caused the survival of other aquatic organisms in the introduced areas to be threatened. Therefore, the reason why the golden apple snail threatens biodiversity is the invasion of alien species.

(4) Farmers took advantage of the fact that ducks and black carp like to eat young snails and created a method to reduce the number of young snails by releasing ducks and black carp. This method belongs to biological control. Biological control takes advantage of the relationship between biological species and uses one or a class of organisms to control crop diseases and insect pests. Its biggest advantage is that it does not pollute the environment and saves money on pesticides, which is unmatched by non-biological pest control methods such as pesticides.