Three minutes to talk about popular science
Have you ever wondered why lobsters have to be pinched and tailed before they can be eaten? Why do chefs always urinate lobsters first when they cook them? The lobster also urinate, it ** discharge, do you still feel fragrant after reading it?
When it comes to lobster, I believe many foodies are already salivating, its meat is fresh and tender, and the body not only contains high protein and low fat, but also has medicinal value.
After work, call a friend, go to the food stall to ask for a few beers, a pot of lobster, it is a great enjoyment of life, but have you noticed, whether it is eating lobster or other shrimp, the first thing you get in your hand is to remove the head, why is this?
This is because all the organs of lobsters are basically concentrated in the head, and lobsters with a poor living environment are likely to be contaminated by heavy metals, and removing the head before eating it can reduce a lot of risks.
What's more, the head of the lobster not only contains contaminants, but also stores the lobster's urine. Yes, you heard it right, lobsters urinate just like humans, so what exactly does lobster's urine flow from? After the arrangement, go to **?
Many people speculate that the lobster's urination site is on the tail, but the answer is completely opposite, its urination site is actually on its head! The specific part is the antennal line hole at the bottom of the second pair of tentacles of the lobster, also called the filter gland, which is equivalent to the human renal tubule. It consists of a spiral tube and an iron sheath sac that connects directly to the bladder, and because the bladder is located not far from the eye, the lobster's eyeball volume is repeatedly squeezed.
Similar to the human urinary system, lobster's urine needs to be filtered twice before it can be excreted, but in other ways, it is very different from humans.
First of all, the lobster has more than one urination site, it can also urinate from its own gills and digestive glands. Why there are so many excretory parts, scientists have given the answer: because the organs of shrimp are more crowded, the structure of the digestive system is relatively simple, from one place, from the first can out.
Then there is the purpose of lobster urination, for them, urination is not only a physiological behavior, but also a means of courtship for their survival.
We all know that many animals have unique courtship methods, such as peacocks opening the screen and dragonflies ordering water, but the way of lobsters is to use their own urine, which must be unacceptable to many people.
For us humans, the smell of lobster urine is extremely unpleasant, but in the eyes of female lobsters, it is the best tool to attract males, and the stronger the urine smell, the greater the attraction of female shrimp.
Male lobsters are active by nature and, like other animals, will choose to fight and fight to decide the ownership of their territory. Female lobsters will find the most powerful male lobster after their duel as their mate candidate, and then come to his place of residence to leave her own urine, which contains estrogen, and after being sensed by the male lobster, he will actively look for the female lobster.
Not only that, but did you know that the first thing male lobsters do when they meet is to splash urine on each other's faces as a way to show off their strength. Therefore, the urine of lobsters is not something that can be excreted casually, and it generally takes more than a month to store a sufficient amount, and when it comes to estrus, it comes to the river in groups**.
It is worth mentioning that before the lobster officially went to the human table, the rich looked down on this strange-looking "food". In medieval Europe, lobsters were sent to the beach in large quantities with the tides, it was a meal for poor families, and had certain medicinal value, its mouth and forehead were ground into a fine powder, which could be used to ** kidney stones, and it was used to grind the gastroliths and gizzards of food, and it could also be used to relieve stomach pain, so do you think that people at that time could eat so many lobsters every day to be happy?