The principle of catch and release
The principle of catch and release originated in North America. In Europe it came later, and were not previously bound mindless catch and overfishing with a sharp decline of fish fauna of water bodies. Although clearly such a relationship, those bodies of water that are not fish, teeming with fish and water bodies where there is intense catch that is empty or populated by small low-value fish. It is proof that fishing pressure is killing the population, they are restored in such reservoirs slower than them. The destructive process can be stopped or a complete cessation of fishing, or the introduction of the principle of catch and release. There are reservoirs that confirm the fact that this principle works effectively.
Obvious pros and cons of the principle of “catch and release”
The main advantage is that the fish in the ideal remains alive continues to grow in size and multiply. After settling fish is not always possible to rectify the situation in the waters inspire some, this affected the aboriginal people, and immigrants do not always hold. Another important plus for anglers — don’t need to think about how to preserve the catch and to take home fresh. It is often difficult to catch a fish you have to throw in the trash. It’s a shame! Those who follow the principle of catch and release, these issues are not of concern. It is worth noting the moral aspect: the satisfaction of knowing that you creatures are not destroyed and to preserve the fish populations for their grandchildren and great-grandchildren.
Proof of the high survivability of fish after the proven stress is the experience of fish-breeding establishments Know that when manufacturers take away the sexual products (milt and eggs for rearing), the fish occur and trauma, and severe stress. But not one manufacturer after this manipulation is not lost, since all these procedures are carried out strictly according to the method. And as for the fishing, carried out the principle of catch and release.
The downside is often that the fish in the catch greatly hurt, and more hurt ignorant actions trying to resuscitate when released. Such fish caught in the pond, stress pheromones alarm scares the other inhabitants of the pond and sometimes she dies in agony, as her body taints the water. Frightened away the rest of the fish ceases to feed and may even cease to multiply. And still the wounded and the released fish often settle pathogens, fungi and bacteria. They finish off the damaged fish and infect healthy. That is, there is cons of letting off in the pond caught fish. However, it should be clarified that all this is happening with the illiterate use of the principle of catch and release. If you follow the rules, these risks can be minimized.
There is an opinion that even if the fish is showing signs of life, is active and alert when it is released in the pond, it stone goes to the bottom and there in agony dying. Scientists-ichthyologists have conducted research and put labels on produced fish. After many years of marked individuals were caught, recorded a large increase and a few prosperous spawning, which released this fish managed to hold. So that this objection is not tenable. By the way, any
aquarist heard a statement that each fish after the catch is depressed reaches the bottom, will be very surprised. In practice, the aquarium fish are caught repeatedly, are transplanted and when cleaning the aquarium and other fish actions, and often accidentally injure a net. Then released into the water some fish are quite active.
Another argument against concerns the learnability of the fish. Indeed, they are well trained. Fish caught and released back, most likely, the second time the same bait will not fall; moreover, their behavior will tell other fish that this bait is not worth taking. However, scientists will make two main counterarguments. The first fish is noticeably better when off the hook in the water, and the other fellows demonstrate what is to be feared. In the latter case, learning is faster and secured for a long time! Second — with the full catch and release stress partially discourage fish memory, and they don’t really remember what was the root cause of their capture.
The only argument of the opponents of releasing the fish that’s hard to argue. is that they catch fish to feed the family, myself and cats. But most likely, those who fish in order not to die of hunger, do not participate in debates on the Internet.
How to increase the percentage of survival when following the principle of “catch and release”?
The main thing — to choose the right tackle. Now almost all manufacturers of fishing equipment concerned with the development and release of antitrauamtic hooks. When fishing on spinning mnogokrjuchkovye and natural baits the death of the caught fish is large. And to die the fish can and immediately when letting off, and tormented for several months. And when using single hooks smooth beardless lip fish injured is minimal. By the way, in fish of different species are not the same threshold for pain, so they suffer injury. So, pike a little traumatized, they have a high pain threshold and degree of tissue regeneration. Just below these figures have salmon. But a carp is a very delicate fish and much worse restored after capture. It is worth noting that in this in pross among scientists and fishermen, there is no consensus. Many people believe that injuries from fish hooks is not terrible, since most of them well-developed system of tissue regeneration. Are textbook examples of a pike with a hook in the lip from Peter I and the like superfecta. I think that even if injury and not very scary, still need to try to minimize.
Be careful not to burn the fish its dry, hot hands. Do not forget to use special gloves that allow less to injure the fish. Someone just lowers his hands into water before you pick up the fish and pull the hook, but it is better to wear gloves, which also should be pre-wet. However, many scientists and anglers believe this security measure is unnecessary.
Most anglers, following the principle of catch and release, photographed, and weighed the trophy. This is their only little joy. Obviously, such procedures should be carried out as quickly as possible, otherwise you exhaust the fish so that it is better not to release it, and eat it. And beware of hurting her eyes and the Gill arch.
Stand salmon fish. Here the principle of catch and release should be used only after carefully considering several factors: fish size and age, water, weather conditions, time of year and even the month. If we are talking about the red fish (not just salmon), they need to let go in any case. For other fish it’s not so simple; sometimes to release them into the pond just makes no sense. And if you are planning to take her home and leave those on the shore for birds and animals. Important point — the small fry has no sense to let in those waters where there is strong current or the area of the thermocline. The wounded young individuals, most likely, will not survive in these conditions, even if to hold them in the water helping to hold it in position on the right horizon.
You must help the fish to maintain balance in the water. If the fish kept him, and departed from the shore, most likely she will live long and produce healthy offspring. But the fish has to be re-used to keep balance, the angler sometimes you have to stand in water up to half an hour, holding the injured tired the fish head against the current. That is, to artificially revive it realiably (the desire to swim against the current). The fish are holding over the caudal peduncle and release only when she begins to break free from his hands. Thus, to observe the principle of catch and release is not easy and not simple. Much easier and less painful to throw fish into the bucket and bring it home. So often the opponents of this principle — just lazy people. Ideally, the fish is better not to remove from the water. Is gently in water to release it from the hook, and at this time someone on the shore you fish for a photo. About the weigh-in this case, of course not. There is even a special device — the wire spiral, which at a certain skill will allow you to remotely release the fish from the hook. But you can only do small and medium fish; large — have to deal on the shore.
“Catch and release” in numbers
Consider not survive in water of fish mortality which after returning into the reservoir reaches 25%, that is, killed every fourth fish released, the Optimist will say — But three out of four will live, multiply and maintain the population. And it will be the strongest of the species that just need to be fruitful and to improve the characteristics of the species.