Yesterday, I saw a news that there was a plague of starfish in Jiaozhou Bay in Qingdao, and these starfish have caused a lot of trouble to nearby clam farmers. According to local fishermen, as long as the starfish goes, the clams are basically not spared, and all of them will become the belly meal of the starfish. Farmers say this situation began to appear after the Spring Festival.
Recently, it is the time for clams to release seedlings, and if the starfish cannot be cleaned up in time, it will bring greater losses to farmers. So why is it that such a soft and cute little creature as starfish has such a destructive power that it can become a "clam killer"?
Starfish flooded, fishermen suffered heavy losses, such a soft and cute little creature, why has become a "clam killer"
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Let's first get to know the protagonist of this event, the "spiny sea car", and the starfish we are talking about is the collective name of all echinoderms and more than 1500 species of the starfish. The protagonist of this time, the "Spiny Sea Disc Car", is the most common type of starfish off the coast of the Pacific Ocean. In China, most of this starfish is distributed in the waters of the Yellow Sea and the Bohai Sea, especially in the Liaodong Peninsula, where the water level is shallow and the water temperature is cooler, as well as the waters of the central Bohai Sea and Long Island. Therefore, the starfish disaster that occurred this time is not a species invasion at all, because these places are the natural distribution areas of the "spiny sea car".
Starfish is a typical carnivore, and the adult "spiny sea car" has excellent predatory skills, and its favorite food is a variety of shellfish. It has two stomachs, one is like a mouth, and its main purpose is to process the food just caught, and then give the food to the other stomach for thorough digestion and absorption.
Due to the special body structure, the stomach accounts for most of the entire digestive system, coupled with the flat body shape, so its intestines are compressed very short. Therefore, the digestibility of food by the spiny sea pan car is very low, which is at most 5%-5.7% of the food it swallows. So, the spiny sea pan car is eating almost every moment!
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Then look at the victim of this time, "Philippine clams", which is a kind of excellent shellfish with short breeding cycle and strong adaptability, and is one of the four major farmed shellfish in China. It is called differently in many places, such as clams, clams, flower shells, flower clams and so on. In recent years, the output of Philippine clams in China has basically been more than 3 million tons, which is 15% of the total amount of seafood culture in the country, and it is the seafood species with the highest aquaculture output in China, especially in Shandong and Liaoning provinces.
Why do foodies love Filipino clams? Because of its full flesh, it is also very easy to cook. For the spiny sea pan car, it also feels that the Philippine clam is more suitable for its own appetite. First of all, it is moderate in size, the shell is relatively weak, and the most important thing is the huge scale of breeding in the coastal area, so that it can easily find food.
In fact, such incidents as starfish flooding have occurred before, but the amount is not very large, so it has not attracted people's attention. So why are so many starfish appearing in Jiaozhou Bay this year?
According to the analysis of marine experts, adult starfish has fewer natural enemies, but its larval survival rate is very low, because there are many fish in the deep sea that can prey on its larvae, so it will come to shallow seas to breed. Another reason is that as mentioned above, the food in coastal aquaculture areas is relatively abundant.
< h1 class = "pgc-h-arrow-right" > eat starfish</h1>
Many foodies read the report of this incident and said, let's go eat. Starfish is indeed edible, but it is only edible when it is sexually mature (that is, adult starfish, juvenile starfish are not eaten), because its main edible part is the reproductive glands. Also, starfish is a medicinal herb, and it is said that "it is a medicine three points poison", so starfish can not eat more. That's why someone who eats starfish will feel numbness in their mouth!
In order to quickly clean up starfish and reduce the loss of farmers, the local authorities temporarily allow farmers to use the "cage net" prohibited by the regulations to improve the efficiency of fishing for starfish. Coupled with some merchants who have acquired starfish, I believe that it will not be long before the situation of starfish flooding will definitely improve! #中国海星泛滥 Is it reliable to eat it all? #
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