The immeasurable diversity of nature on our planet: scientists consider to 3500 species of mammals and more than 850 000 species of insects. Despite the fact that already for many centuries is explored flora and fauna, and annually published reports of discoveries of new species, which find even in long inhabited and explored areas. So, in the early 30-ies of our century was known to 800 thousand species of butterflies, and by 1942 he already 900 thousand species. Even less studied is the life in the oceans, which often make sensational discoveries.
The existence in the seas and oceans are dangerous animals the people knew even in ancient times, although along with very real views were widespread tales of fantastic sea monsters. It was known about the danger of injections of some animals, on the toxicity of some marine animals by eating them for food and, of course, about large aggressive fish – the shark. Currently published a lot of papers devoted to the description of poisoning from the ingestion of marine animals in different parts of the World ocean. So, only in 50-ies of our century from such poisoning suffered tysjacheletij. According to the researchers, only poisonous fish there are about 500 species, most of which live in the salty waters.
By climatic and geographical basis distinguish polar, Northern, temperate, subtropical and tropical zones. The majority of our population lives in Northern and moderate climatic zones and therefore are not familiar with the fauna and flora of the tropics. Year-round abundance of warmth in them contributes to the rapid development of wildlife. So, in the Amazon region, has about 15 thousand different species of animals. Continue reading
First, of course, the seafood are valuable sources of useful protein. This protein is easier to digest than meat, quicker to digest. If on the digestion of beef, our body spends 5-6 hours, the fish is digested for 2-3. This is because muscle tissue is more delicate fish, rich in water, which is retained during cooking, leaving the fish in the juice.
Fish protein rich in essential amino acids, without which the human body cannot function properly. Among amino acids — tryptophan, lysine, methionine, and the most useful — taurine.
The most rich in taurine squid, shrimp, krill, sea bass, cod, tuna and other oceanic fish.
Secondly, fish and seafood is low in calories, which means that they can have losing weight and overweight. Women in Japan rarely suffer from overweight, because they eat little beef, replacing it, and other meat animals on the fish.
However, followers of Japanese cuisine you have to understand that one is not going to make their weight ideal. The fact that the Japanese also eat very little, and balanced, of particular importance are the appearance, the aroma, the taste of the dish and the portion size is minimal. Whereas in the West people are used to consume sushi in tens, arguing that they still do not get fat. Meanwhile, in large Kolichestvennaya carbohydrates — rice and salmon fat can cause weight gain. Be consistent until the end — let Japanese lunch will be limited to a bowl of miso soup, one portion of land (2-4 pieces), and a salad, for example, from seaweed. In this case, the extra weight really does not appear. Continue reading
The causative agent in fast-flowing water persists for long (in hours). Its virulence is low, as it usually causes disease in immunocompromised fish spawning. After amplification of their virulence by passaging in the body is weakened fish it causes disease in a large number of fish in the form of epizootic outbreaks.
Ehpizootologicheskaja data. Disease in pikes usually occurs within a few days after spawning (March – April). The most susceptible Mature individuals. The perch, bream, roach and burbot the disease recorded in the summer. The emergence of the disease contributes to cold spring, especially during the spawning period of pike. Then the flash increases and reaches maximum development during the summer months. It fades by the end of summer,
Epizootic process can continue in a large body of water (reservoir, lake) for several years and spread to other reservoirs-current water with transportable or migratory fish. The source of infection are sick and dead fish, microbiological. They are contagious from the beginning falls into the water with secretions, or the decomposition of corpses. Most researchers believe that infection occurs via povrezhdeniya the skin, mucous membranes, intestines. Continue reading