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A method for multiplying and releasing large-scale fish species of scorpion anchovy in ponds

A large-scale breeding and releasing technology, which is applied in the field of breeding and releasing large-scale fish species such as anchovy in ponds, can solve the problems of being unsuitable for large-scale transportation, unsuitable for large-scale transportation, and cumbersome operations.

Active Publication Date: 2021-09-10
上海市水产研究所(上海市水产技术推广站)
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] At present, some technologies and patents related to the transportation of young anchovy fish have solved the problem of wild fish species being caught and temporarily raised in the natural ecological environment and transported to farms: 1) a kind of transportation method for anchovy fish species disclosed in Chinese patent document CN102907353A. Anchovy natural fish species or artificially bred fish species, long-distance transport in water tanks with salt, no air, low temperature (15-22 ℃), and low density, the transport density is about 1.5g / L, generally 8-15 cm fish species weigh 5 -8g, converted to 200-300 tails / m 3 , the transportation density is extremely low, and is not suitable for large-scale transportation; 2) the disclosed saury fingerlings of Chinese patent document CN101263795A catches and temporarily raises the transport technology, is to catch wild saury anchovy fishes through temporarily raising with bagged and salted transportation (35 tails / bag Below, 5kg water / bag), the transportation time is less than 3 hours, the quantity of each transportation is small (about 1000-3000), the operation is cumbersome, and it is not suitable for large-scale transportation; there are also related anchovy species from Shanghai Fisheries Research Institute Transportation technology patents, but most of them are aimed at freshly bred Anchovy seedlings. The general size is 2-5cm. The Anchovy seedlings bred in indoor cement tanks are relatively stress-resistant, and the size is small, and the transportation is relatively simple. Such as: the transshipment technology of a kind of summer flower fish species disclosed in Chinese patent document CN103027002A which is indoor breeding of scorpion anchovy. Short-distance transportation (30-40 minutes) and long-distance transportation (within 5 hours) of oxygen bags (50 tails / bag, 5L water / bag)
[0004] However, there is no technical solution for large-scale swordfish fingerlings (9-12cm) suitable for pond farming to be transported from the pond to the natural ecological environment in the wild for multiplication and release. Compared with the freshly bred fish species in cement ponds, it has a relatively irritable temperament and much more difficult transportation operations; but compared with wild fish species, it has a relatively mild temperament and can be suitable for higher density transportation after certain technical treatment

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0018] A method for multiplying and releasing large-scale fish species of anchovy in ponds according to the present invention is composed of 7 steps: time and space requirements for releasing, exercising by pulling nets, transfer by pulling nets in ponds, temporary cultivation in cement ponds, loading onto vehicles, transportation on vehicles, and stocking at wharves , including the following steps:

[0019]1) Time and space requirements for release: the release time for the multiplication and release of the Yangtze River Anchovy is from mid-October to mid-November, and the release location is selected in the waters near the Yangtze River Estuary and Hangzhou Bay. The environmental salinity of the release waters is 8-15 and the temperature is 18-20 degrees; Standards for releasing fish species of anchovy: the total length is 9-12cm, the weight is 2-3g, and there is no drug residue and infectious disease after testing; the date of release is generally selected during the spring ...

Embodiment 2

[0027] On November 6, 2015, the Shanghai Fisheries Research Institute adopted the method of the present invention to release 45,000 fish species of Anchovy from the Yangtze River, and achieved good results: On November 5, at the Fengxian Base of the Shanghai Fisheries Research Institute, the fish anchovy was pulled into the pond by a net. About 48,000 fish species enter the 6 cement pools in No. 2 Shed. The specifications of the Yangtze River Anchovy species are 10.26-11.38cm in length, 9.06-10.07cm in body length, 2.16-3.12g in weight, and the cement pool is 18m 3 , about 8,000 tails are temporarily raised in each pond, and after one day of temporary storage, the next day, November 6, the net is loaded and loaded with about 4,000 tails in each tank, and they are transported to the fishing boat wharf of Luchao Port at 9-10 am. The survival rate is above 90%. Due to the high tide level, the drop between the outlet of the transport water tank and the water surface of the natural ...

Embodiment 3

[0029] On November 18, 2016, the Shanghai Fisheries Research Institute adopted the method of the present invention to release 20,000 fish species of Anchovy from the Yangtze River, and achieved good results: On November 17, at the Fengxian Base of the Shanghai Fisheries Research Institute, the fish anchovy was pulled by a net in the pond. About 20,000 fish species enter the 4 cement pools in No. 2 shed. The water temperature in the outer pond is 20-21 degrees. 3 , about 5,000 tails in each pond. After one day of temporary storage, the next day, November 18, pull the net and load them into trucks. Each water tank is loaded with 2,500 tails. The transport water temperature is 20 degrees, and they will arrive at Luchao Port at 9-10 am. At the fishing boat wharf, the survival rate of transportation was above 90%. At that time, the tide level was low, and the water drop between the outlet of the transportation water tank and the water surface in the natural waters was greater than 3...

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Abstract

The present invention relates to the field of resource protection, multiplication and release, in particular to a method for multiplication and release of large-scale fish species of anchovy in ponds. It consists of 7 steps: vehicle, vehicle transportation, and wharf stocking. The technical scheme for multiplication and release of large-scale fish species of scorpion anchovy in ponds of the present invention solves the problems of strong stress and low survival rate of mass transportation of large-size scorpion anchovy fish species (9-12cm) in ponds, and maintains a relatively high transportation efficiency. Density (2800‑4000 tails / m 2 ) and transportation survival rate (90%), and the method is simple and easy to learn, easy to popularize, and is suitable for large-scale transportation, multiplication and release.

Description

technical field [0001] The invention relates to the technical field of resource protection, multiplication and release, in particular to a method for multiplication and release of large-scale fish species of anchovy in ponds. Background technique [0002] Coilia ectenes belongs to Herringiformes, Anchovyidae, Coilia genus, commonly known as saury, hairy saury, mackerel, bearded fish, anchovy, etc. It is mainly distributed in the Yellow Bohai Sea and the East China Sea in my country. It can be seen in all the rivers that lead to the sea, such as the Liaohe River, the Haihe River, the Yellow River, the Yangtze River, and the Qiantang River. It is famous for its tender meat and delicious taste. rare migratory fish. In recent years, due to the influence of many factors such as overfishing and the deterioration of the ecological environment, the resources of the anchovy have declined sharply, while the market demand has continued unabated, and even reached the dilemma of having a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 施永海张海明谢永德严银龙徐嘉波刘永士
Owner 上海市水产研究所(上海市水产技术推广站)
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