fishing nets are nets used for fishing. The net is a device made of fibers woven in a lattice-like structure. Some fishing nets are also called fish traps, such as fyke nets. Fish nets are usually a net formed with relatively thin thread nodes. Early nets are woven from grass, flaxes and other fibrous plant material. Then cotton is used. Modern nets are usually made of artificial polyamides such as nylon, although the nets of organic polyamides such as wool or common silk thread to date and are still in use.
Video Fishing net
History
Fish nets have been used extensively in the past, including by the stone age society. The oldest known fishing net is the Antrea net, found along with other fishing gear in the town of Karelian, Antrea. The net is made of willow, and dates back to 8300 BC. The remains of other fishing nets returned to the late Mesolithic, and were found along with sinkers in the seafloor before. Some of the oldest stone carvings in Alta (4200-500 BC) have mysterious images, including intricate patterns of horizontal and vertical lines that are sometimes described as fishing nets. American Indian Indians on the Columbia River roam the net from pine root or weed fibers, again using stones as scales. To float, they use cedar trunks that move in a way that makes fish fear and help unite them. With the help of large canoes, the pre-European Maori deployed a trawl net that could be more than a thousand meters long. The net was woven from green flax, with stone weight and light wood or lime floats, and could require hundreds of people to be transported.
Fish nets are well documented in ancient times. They appear in Egyptian tomb paintings from 3000 BC. In ancient Greek literature, Ovid made many references to fishing nets, including the use of cork buoys and lead weights. The pictorial evidence of Roman fishing comes from a mosaic showing a net. In a fishing parody, a type of gladiator called retiarius is armed with trident and casts. He will fight against a secutor or murmillo, who carries a short sword and a helmet with a fish picture on the front. Between 177 and 180 Greek writers, Oppian wrote Halieutica , a didactic poem about fishing. He described the various ways of fishing including the use of a net thrown from a boat, a spoon net opened by a circle, and various traps "that function while their master is asleep." Here's an Oppian description of fishing with "immobile" nets:
The fishermen set up very light webs of hemp and wheels floating around the circle while they roughly attacked the surface of the sea with their oars and made a fuss with the sweeping beam of the pole. In the rattling of the oars and the sounds of the fish swayed in fear and rushed to the base of the net standing in a state of rest, thinking it was a shelter: foolish fishes, frightened by sound, entered the gates of destruction. Then the fishermen on both sides rushed to the ropes to pull the shore ashore.
In Norse mythology sea giant RÃÆ'¡n uses a fishing net to trap missing sailors. References to fishing nets can also be found in the New Testament. Jesus Christ is said to be the master in the use of fish nets. The hard and fibrous hardwood bark of papayas is used by Native Americans and settlers in the Midwest to make ropes and fishing nets. The archaeological site at LeÃÆ'³n Viejo (1524-1610) has fish net artifacts including pottery fragments that are used as weights for fishing nets.
Fish nets have not evolved much, and many contemporary fishing nets will be recognized for what they are in the Neolithic era. However, the fishing line from which the nets are built is very evolved. The fossil fragment "may be a two-layered string laid about 7 mm" was found in one of the caves in Lascaux, dated to about 15,000 BC. Egyptian cords are from 4000 to 3500 BC and are generally made of reed water fibers. Other ropes in ancient times were made of palm fiber, hemp, grass, papyrus, leather, or animal hair. The rope made of hemp fiber is being used in China from about 2800 BC.
Maps Fishing net
Type
Fishing line
Ropes and lines are made of long fibers, twisted or braided together to provide tensile strength. They are used to pull, but not to push. The availability of reliable and durable ropes and pathways has many consequences for the development and utility of fish nets, and affects particularly the scale at which nets can be deployed.
- Twine
- Fishing line
- Multifilament fishing line
- Monofilament fishing line
- Fishing
- Manila strap
- AbacÃÆ'¡ rope
Floating
Some types of fishing nets, such as the seine and trammel, should still be suspended vertically in the water using a buoy at the top. Various types of light wood "corkwood" have been used throughout the world as floating fish. Floating comes in various sizes and shapes. These days they are often brightly colored so it is easy to see.
- Small buoys are usually made of cork, but fishermen in places where cork is not available use other materials, such as birch bark in Finland and Russia, as well as pneumatophores from mangrove apples in Southeast Asia. These materials have now largely been replaced by plastic foams.
- The subsistence fishermen in some areas of Southeast Asia make corks for fishing nets by forming pneumatophores from mangrove apples into small buoys.
- Entelea : The wood is used by M? ori for a fishing net buoy
- The native Hawaiian tribe makes a net of low density wiliwili timber.
- Floating glass is a large glass ball for long ocean nets, now replaced with hard plastic. They are used not only to keep the fishing net fixed, but also for dropline and longline fishing. Often larger floats have flag markers for easier spotting. â € <â € <
- Float glass is a popular collector item. They were once used by fishermen in many parts of the world to keep fishing nets, as well as longline or floating droplines.
Weight and anchor
Culture Cucuteni-Trypillian, c. 5500 BC up to 2750 BC in Eastern Europe, creating heavy ceramics in various shapes and sizes used as looms when weaving, and also attached to fishing nets.
Despite their ornamental value, clam dogs are traditionally used by local fishermen as a slicer for their fish nets.
Production
Fish nets are typically produced on industrial weaving machines, although traditional methods are still used where the nets are manually woven and assembled in a home or home industry.
Environmental impact
Fisheries often use large-scale, indiscriminate webs and capture whatever happens; turtles, dolphins, or sharks. Bycatch is a major contributor to the death of sea turtles. Longline fishing, trawling, and gillnet are the three types of fishing with the most sea turtle crashes. Deaths often occur due to drowning, where sea turtles are entangled and can not rise into the air.
Fish nets, usually made of plastic, can be left or lost in the sea by fishermen. Known as a ghost net, it involves fish, whales, dolphins, turtles, sharks, dugongs, crocodiles, seabirds, crabs, and other creatures, restricting movement, causing hunger, lacerations and infections, and, on those who need to return to surface to breathe, suffocate.
Miscellany
Divers may be trapped in fishing nets; monofilament is almost invisible under water. Divers often carry net cutters. This is a small handheld device carried by scuba divers to escape if trapped by fishing nets or fishing rods. It has a small sharp knife like a scalpel that can be replaced inside a small notch. There is a small hole at the other end for the lanyard to tether the cutter to the diver.
Gallery
See also
- Fish trap
- Nets (material)
- Stunning fish catch
- Mosquito nets § Usage
Note
References
- Fridman AL and Carrothers PJG (1986) Calculations for fishing gear design (FAO fishing manual), Fishing News Books ISBNÃ, 978-0-85238-141-0
- Klust, Gerhard (1982) Nets material for fishing equipment FAO Fishing Manual, Fishing News Book. ISBN 978-0-85238-118-2. Download PHP (9MB)
- Prado J and DremiÃÆ'¨re PY (eds.) (1990) Fisherman's work FAO, Rome. ISBNÃ, 0-85238-163-8.
- von Brandt A (1984) Wiley-Blackwell's world fishing method. ISBN 978-0-85238-280-6.
External links
- Clean basic design: Gill nets
Source of the article : Wikipedia
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