CATDOLL : CATDOLL: What impact do plastic products have on the growth of oysters?

1. What impact do plastic products have on the growth of oysters?

Plastic products contain a lot of chemical ingredients, which are not conducive to the growth of oysters. It is best to use broken glass products.

Plastic products contain a lot of chemical ingredients. I suggest you use glass products.

Plastic waste is harmful to the growth of seafood

No, plastic is only toxic when heated.

Oysters refer to oysters, also known as spiders, sea oysters, marine molluscs, meat for consumption, is a very expensive seafood in restaurants

Oysters, also known as sea oysters and oyster leeches, are a type of marine bivalve molluscs that usually live on rocks in suitable sea areas. There are many species of oysters, which are distributed along the coasts of northern and southern my country. The main species suitable for cultivation in southern waters is the pleated oyster; the species suitable for cultivation in northern waters mainly include the Pacific oyster and the Dalian Bay oyster.

Oysters have different adaptability to various factors in the aquatic environment due to different species, and the differences are even quite large. The suitable salinity range for the pleated oyster is 2.2%-2.6%. Higher than 3.0% or lower than 1.0% are not conducive to growth. The suitable water temperature for the growth of Pacific oysters is 6-32℃. When the water temperature is higher than 28℃ or lower than 6℃, the growth is slow or stops. It grows fastest when the water temperature is 15-25℃; the suitable salinity range is 0.6%-3.0%, and the optimum is 0.6%-2.6%.

There are many ways to cultivate oysters, including stone-throwing cultivation, bamboo-inserting cultivation, raft-frame cultivation, floating raft cultivation, and bottom seeding. Due to different cultivation methods, the designed per-acre yield is also very different. Taking the raft-frame cultivation of pleated oysters as an example, rafts are set up at the lower edge of the tidal stream and low-tide area, and oysters are raised on the rafts. Each raft is 50-60 meters long, and a string of oyster seedlings is hung every 30 centimeters, with about 30 pieces per string; the distance between rafts is 3-4 meters, and 2-2.5 rafts are one acre. Generally, it can be harvested after 7-8 months of cultivation. The harvest season is from January to April. The size of the individual is 7-8 cm in shell length, and the general per-acre yield can reach 6-10 tons (fresh weight with shell).

2. Should we remove the internal organs when eating raw oysters? Why?

There are many common small seafoods such as Pacific oysters, which are also very cheap. The "price-performance ratio" of the "world's most delicious" clams is not much inferior. Large-sized white shrimps are caught directly from the pond and grilled immediately after being caught. Just thinking about the scene makes you drool. Sometimes it is called oysters in the Cantonese-speaking areas of Queshengsui. It is also called sea oysters in Dalian and other places, and is called oysters in the Minnan-speaking areas. Although the varieties and shapes of oysters in these places are different, they are all oysters.

And it must be removed in the order of heart, liver, spleen, stomach, lung, large intestine and small intestine. It cannot be done randomly. In particular, the caecum of the oyster must be removed before it can be eaten. The caecum of the oyster has a great influence on human intelligence. Because you are not familiar with the way to eat oysters, when I eat oysters, I usually wash them and steam them in a pot for 3 to 5 minutes. Use a knife to open it, and then use the dipping sauce you made to dip it in. It is perfect! No need to remove the internal organs.

Generally, the bowels and internal organs are removed, washed with light salt water, and eaten raw! Or boil it in cold water or steam it. To be honest, I don’t recommend roasting it. Although I like roasting, some grilling chefs are not good enough, which will cause the inside to be raw and the outside to be cooked! There are not many people who farm oysters. In the coastal area of ​​Fangchenggang, it seems that there are not many large-scale ones. Now it is different. The coastal pollution is serious, and more and more people are farming. The good breeding areas have long disappeared.

The breeding area in Dalian is in the Jinzhou Development Zone, such as Wanli and Dalijia... They choose to use scallop shell seedlings to attach seedlings indoors, and then use brown ropes to clamp the shells with attached seedlings or hang them in cages. A piece of shell with several oyster seedlings attached is sold for 8 cents; Zhejiang and Fujian mostly use stone pillars to attach seedlings for breeding; but when eating oysters raw, you must pay attention to personal gastrointestinal problems. If your stomach is relatively good, you can eat a few raw in small amounts. If your stomach is not so good, I personally suggest that you don't eat them raw, after all, people with poor stomachs.

Yes, it is necessary. Because oyster shells are rich in oyster excrement, and there may be heavy metal pollution in them, eating them is not good for the human body.

Yes, this is because the toxin content in the internal organs is relatively high, and eating this kind of internal organs is likely to harm human health, so the internal organs must be removed during cleaning.

It is better not to eat the internal organs, because the oyster internal organs will eat some dirt and are not clean inside, so it is best to remove the internal organs.

No, the rest of the life form except the shell is edible. The body contains a large amount of seaweed material, which does not need to be removed.

3. Oyster farming is very common. What are the environmental requirements for oyster farming?

Oyster farming is very common. What are the environmental requirements for oyster farming?

1. There are many ways to cultivate oysters. With the continuous development of aquaculture, new aquaculture methods and technologies are constantly emerging. Among them, the more common ones are bamboo culture, bottom seeding culture, rock standing stone culture, hanging culture, etc. Among them, hanging aquaculture is divided into grid type, rope type and raft type. Regardless of the aquaculture method or method, the key is to choose the aquaculture site, which should be determined within its adaptability range according to the living habits of oysters and the requirements of oysters for environmental factors. In addition, the degree of pollution of harmful industrial and agricultural wastewater should also be considered. The breeding and management of any variety is an important link. The management of vertical aquaculture of long oysters mainly includes: timely evacuation of aquaculture density, adjustment of aquaculture water layer, reinforcement of typhoon prevention, and anti-sinking (raft).

2. Oyster and Shrimp Mixed Culture

1. Selection of shrimp pond: The shrimp pond for oyster co-culture should be made of silt or muddy sand, with a water depth of more than 1.3 meters and an average daily water exchange rate of about 50%. The transparency should be controlled at 40-50 cm in the early stage and 50-60 cm in the middle and late stages.

2. Site layout: Before stocking the fry, thoroughly dredge the silt and use a bulldozer or other tool to level and compact the bottom of the pond where the oyster fry play, making it slightly convex and slightly higher than the surrounding bottom to prevent the oyster fry from sinking and being buried in the silt and dying.

3. Seeding: Under the premise of ensuring the normal stocking density of shrimp, the optimal seeding amount of oyster seedlings is about 30,000 per 667 square meters. The sowing time should be selected in early April, and the seedling seed player specifications should be more than 2 cm in shell length. The seedlings should be evenly stressed and should avoid the low-lying areas of the ring ditch and the feeding area. The sowing area refers to the area of ​​the seedlings occupying 1/4 to 1/3 of the bottom area of ​​the pond.

3. Stone-throwing culture: The stones that were once used as oyster seed pickers are now used as oyster culture equipment. Oysters with a short growth period can be cultured in the nursery; oysters with a long growth period by the river should be moved to the breeding farm for culture. There are three cultivation methods: starry sky, plum blossom, and determinant.

1. Baby's breath: Oysters and stones mixed with friends, arranged irregularly.

2. Plum blossom style: usually 5 to 6 oyster stones in a group.

3. Determining factors: row width is 0.5 ~ 1m, row spacing is 0.6 ~ 1.5m, deep water farming can be carried out, and no management is required from throwing stones and picking seedlings to harvesting.

The above is all about the common oyster farming and the environmental requirements for oyster farming. I hope it will be helpful to you.

Environmental requirements for oyster cultivation: Oyster cultivation sites are generally located in inner bays or river passes with hard bottoms, smooth tides, and water quality conditions that meet the environmental requirements of pollution-free aquatic product production areas. The environment requires that the salinity is 13.04~32.04 all year round, and the salinity is not less than 7.52 during flood season; the dry exposure time is within 2~4 hours; the low temperature below 10℃ and the high temperature above 30℃ cannot last too long. There are two ways to cultivate oysters that are suitable for using round shells as a fixation base. Among them, the oysters cultivated in the sea area of ​​Dongli Town, Leizhou Bay, Zhanjiang are the most plump. There is no industrial and domestic sewage flowing into the harbor, the cultivation density is low, and the water quality is excellent, which is particularly suitable for rope cultivation. Pile-driving and hanging cultivation is a new type of oyster cultivation. The cultivation conditions require small waves, smooth tides, no pollution, shallow water, and a water depth of 2.5 meters to 4 meters. The wooden piles are driven into the sea mud until they are stable, and then arranged in rows. Oyster seedlings are raised in strings of shells, cement tiles and other fixed bases on wooden stakes. Each string is about 1.2-1.6 meters long, with a spacing of about 0.8 meters. The breeding density should not be too high to prevent it from touching the seabed mud.

When raising fish, you must raise them in clean waters, and ensure that there is sufficient water supply. You must also ensure the nutritional level of the feed. You must also pay attention to the overall ecological balance when raising fish.

There are several environmental requirements for oyster farming: 1. Temperature adaptation. Oysters of different types in different regions have different temperature requirements. 2. Salinity adaptation, which also varies from region to region.

Pay attention to water temperature, water quality, and salinity. It is best to choose an unpolluted sea area. Pay attention to the density of aquaculture.