Squids – predatory inhabitants of the oceans
In the water column of the oceans meets many other exotic fish, but they do not form the basis of its biological balance; In this regard, the main role belongs to the small mass form – sardines, anchovies, horse mackerel, herring. These slender fish that feed on plankton, are the main products of sea fishing, they also serve as food for many predatory fish, sea birds, dolphins, seals and squids.
The destruction of small fish squid quite successfully compete with other marine predators. Whole flocks of these cephalopods follow the shoals of fish. The movement of light and swift, developed their speed is not inferior to the speed of dorado or dolphin. Not knowing the rest, worn squid in the ocean in pursuit of prey. Significant energy consumption is compensated by the abundance of food absorbed and respiration rate. Some species of squid, dispersed in water, start in the air and can fly over the waves of 40 – 50 meters. In this way they not only catch up with its prey, but also fleeing persecution larger predators.
Squids can move both head and tail first, and in the latter case the rate of movement will be much higher. Dialing into the mantle cavity water, the animal with the force throws it through a nozzle of a special body – the crater, located near the head. The ejected jet of water jet gives the body a boost squid. Regular picking and throwing water from the mantle cavity, squid in the ocean rushes as a living missile. Overtook booty clam grabs her pair of long tentacles prey and kills powerful horny jaws, resembling the beak of a bird of prey. Fleeing persecution, squid, like other cephalopods, emits a cloud of black liquid water, what confuses the enemy.
Squids have long been included in the menu of many inhabitants of coastal countries, especially in south-east Asia, where the taste and nutritional quality of these shellfish are especially appreciated. As dissipate prejudice to eat meat “Octopus”, frozen and canned squid steel exported to the interior of the continent. Initially, their consumption was negligible. In the middle of this century squid products require advertising.
Now this is no longer required, and squid meat is considered a delicacy everywhere.
Fishing for squid is still being primitive traditional methods – they get caught prying, using as bait brightly colored heavy spoon-shaped cigar with two beaters bezborodochnyh sharp hooks. Hunter pulls the end of the fishing line on your finger, throws tackle the water and occasionally twitch it. No bait is required. Squid catches the bright baubles and grabs her hunting tentacles. Shellfish caught immediately pulled into the boat. Apparently, the squid fishery – this is one of the few areas of human communication with the sea, has not lost the old color of romance. Anyway, so says an expert on cephalopods German zoologist Zuev.
“Fishing for squid – he wrote – one of the exciting activity, it is not only interesting, but it is not devoid of mystery. Boats with fishers at dusk go to sea; one after the other, they are removed from the shore and soon disappear altogether. Twilight gradually thicken and finally give way to darkness. Suddenly something flashed – a boat lit the lantern, and then flash the lights on the other boats. Typically, lead fishing fleets, numbering hundreds of boats, Kawasaki, and it seems that all the sea is covered with a garland of lights. Bright light in the vast sea of the night – it’s not a sham, a necessary attribute of fishing. Only at night you can catch squid; day it is absolutely hopeless. Light serves as bait and squid gather vokrg boats. If you’re lucky, in the morning the boat will be filled to the brim with the catch. ”
Fishing for squid is very promising. The fact that these mollusks unlike most commercial fishes quickly reach maturity and live only one to two years. Therefore, intensive extraction of squid does not threaten their complete extermination or significantly undermine the productive forces of the herd that has already happened with a number of valuable fish as a result of overfishing.