Starfish are flooding in Jiaozhou Bay, Qingdao. What causes starfish flooding?

There are actually two main reasons for this starfish flooding. The first is the impact of changes in climate and biological communities. Moreover, when starfish are young, their number is very small, and their physical survival rate is very high, while the weather for adult seafood is even less. The second is that starfish have dense areas with very rich food. Aggregated feeding habits.

What kind of creature is a starfish?

Starfish are very predatory creatures, which are extremely harmful to the living organisms and animal and plant populations in the distribution area. When collecting starfish, they will destroy shellfish and the animals they feed on. Wrap them to suffocate them to death, and then eat them. Generally speaking, only one or two of the 10 starfish they prey on each time actually eat them, so they are very harmful to coastal seafood farming areas.

The places where the starfish outbreak occurred this time are mainly in coastal seafood farming areas. According to preliminary statistics, the total number of starfish secrets is about 50 per square meter, and the sea area is about 100,000.

The economic loss caused directly or indirectly is about 100 million yuan. After the starfish outbreak, because it was in the sea, local residents adopted relatively primitive hunting methods. So far, about 100,000 sand starfish have been caught. 450,000 kilograms, which shows how large the area and harm caused by its scale will be.

At present, the most effective and direct way to solve the problem of starfish flooding is that fortunately, our country is a gourmet country, and there are many ways to cook seafood. This kind of starfish flooding may be extremely harmful to other countries, but in our country I think it is just an extra seafood item on people’s dining tables.

Does the ground cage net play a big role in catching starfish during this flooding?

Although because of the large scale and strong flooding of starfish this time, the destructive damage caused is extremely large, so fishermen are allowed to lay large nets on the seabed in the breeding area when necessary, in order to maximize the Trapping, or trawling within the breeding area, allows starfish to be harvested more effectively and over a larger area, directly reducing the damage caused within the breeding area.

In the process of hunting starfish this time, the most useful fishing net is called the Dilong Net because the mesh size is small. Previously, in order to protect the marine ecological environment and fishery resources, the use of ground cage nets has been banned by relevant departments, in view of the impact and economic losses caused by the starfish flooding.

The efficiency of artificial capture is too low. Most of the starfish caught by divers during underwater operations are large ones, so it is very difficult to clean them up in a short time. Therefore, the relevant departments allow farmers to The use of fishing nets with strong fishing properties, such as Dilong nets, is expected to bring some control over the flooding of starfish in a short period of time.