Fishing methods and transportation techniques of adult crabs

The fishing methods and transportation techniques of river crabs are introduced as follows:

1. Water fishing: it is the river crab reproductive return season, the vast majority of river crabs leave the cave to move in the pond. A net or trap is arranged at the outlet of the crab pond, and then the pool water is discharged slowly, and a large number of river crabs can be caught in the net or trap.

2. Light trapping method: draw out a certain amount of water to retain the water depth of about 30 centimeters. When the river crabs come ashore at night, they put lights on the four corners of the pond and bury a tank under the lights, and the lights are trapped so that the sprinkled crabs fall into the tank.

3. Set up the bamboo crab nest capture method: cut the bamboo with a diameter of 9cm to 10cm, cut each section into 1 meter long, break through the bamboo knots and require them to be smooth, and then tie them into a bundle every 7 to 9 sections. When setting, according to a certain distance, the bamboo will be evenly distributed on the bottom of the pool, fixed with a small bamboo pile and marked the position of the crab nest. Make use of the crab's habit of hiding in caves during the day, it can be extracted at any time and poured out the latent crabs.

Except that some of the adult crabs are caught locally, the vast majority of households have to ship adult crabs to other places for sale. whether the transportation method is appropriate or not is closely related to the survival rate of adult crabs. It is necessary to master the following technical points:

1. Strict classification: harvest or acquisition of river crabs, to achieve "four separate." The first size should be separated and cannot be mixed, otherwise the small crabs are easy to die; the second strong and weak crabs should be separated, and the strong crabs with strong shell feet are suitable for long-term storage and transportation; the third healthy and disabled should be separated, and the missing limbs and feet are only suitable for local sales or short-distance transportation; the fourth fat and thin should be separated.

2. Do a good job in packaging: after the river crab is graded, it is necessary to do a good job in packaging in preparation for transportation. The packing for short-distance transportation can be simpler. At present, most of the long-distance transportation is packed in basket cages, which are first lined with pu bags, and then loaded with river crabs, trying to put the river crabs flat, filled and covered tightly, so that the river crabs can not crawl, otherwise they are easy to be injured and amputated. 15 to 25 kilos each in baskets.

3. Timely transportation: the packed crabs should be transported as soon as possible, and the time should not be too long. under normal circumstances, there are fewer deaths within 3 to 5 days, and more than 5 days, the death will gradually increase.

4. Strengthen the management, prevent the sun, wind and rain during transportation, especially the high temperature. To this end, transport vehicles, ships should have a shed cover, too long to sprinkle water to cool down. Long-distance transport conditions can take cooling measures to promote its hibernation, can greatly improve the survival rate.