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Bastard halibut ecological marking method for release counting

A marking method and flow statistics technology, which are applied in application, climate change adaptation, animal feed, etc., can solve the problems affecting the movement and predation of released fry, the difficulty of large-scale release and use, and the difficulty of recapturing identification, etc., so as to improve the survival rate of breeding , not easy to take off the label, and increase the mortality rate

Inactive Publication Date: 2016-06-08
全国水产技术推广总站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The most commonly used method is the "T" marking method. From the above table, it can be seen that the release of fish fry is too small to be used, and it is easy to cause secondary infection, and it is not easy to use in large-scale release; Cutting less can only be used as a short-term marker, and cutting too much will affect the movement and predation of released fry; molecular markers, fluorescent dyeing markers and other "high, large, and high" methods are not only expensive, but also difficult to identify later.

Method used

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  • Bastard halibut ecological marking method for release counting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for ecological labeling of flounder for releasing statistics, said method for ecological labeling of flounder for releasing statistics comprises the following steps:

[0047] S1: After the cement pool is sterilized, it is used as a culture tank, and filtered water is added. The culture tank is equipped with an aeration device, and the inflation valve on the aeration device is adjusted to make the surface of the pool have microwaves. The density is 0.2~20,000 tails / m 3 , specifically through the growth of flounder and its stocking density decreases;

[0048] S2: When the larvae are 3 days old, the larvae open their mouths and start feeding the rotifers after larvae are 26-30 days old, preferably until the larvae are 27 days old, 28 days old or 29 days old;

[0049] Generally, larvae will have a certain amount of fat reserves after hatching. At this time, no additional food can be added. However, according to the research of the applicant, a small amount of food...

Embodiment 2

[0071] A method for ecological labeling of flounder for stocking research, the method comprises the following steps, see Table 2:

[0072] S1: put 50m 3 After the cement pool is sterilized, it is used as a culture tank, and filtered water is added. The culture tank is equipped with an aeration device, and the inflation valve on the aeration device is adjusted so that there are microwaves on the surface of the pool. At 15°C, the density of flounder eggs is 1.00~20000 tails / m 3 Specifically, the breeding density of flounder can be decreased through the growth of flounder;

[0073] S2: When the larvae were 3 days old, all the eggs hatched out of the larvae or the larvae opened their mouths, and the larvae began to be fed with chlorella and nutritionally enriched rotifers; the chlorella was fed from the 3rd day to the 28th day, and ~ 15 days of feeding is 1m 3 / day, 1m 3 The number of chlorella is about 100 million, and the feeding amount for 16-28 days is 3m 3 / day, per 1m...

Embodiment 3

[0088] Choose 9 15m 3 After the cement pool is disinfected, it will be used as a culture pool, divided into three groups, each group has three pools, and each pool is filled with 8m of filtered water. 3 , adjust the inflation valve of the inflation device so that there are microwaves on the surface of the pool, the water temperature is controlled at 15°C, and 100g of flounder roe is placed in each culture pool. On the third day, all the fish eggs hatched and the larvae could be fed with rotifers. On the fifth day, after the larvae opened their mouths, nutritional fortification was carried out.

[0089] The first group: rotifers fortified with 100 million rotifers 5g enhancer and Artemia 100 million artemia 50g fortified in 3 ponds; the compound feed was commercially available conventional feed for flounder; fortifier It is a commercially available conventional enhancer.

[0090] The second group: 100 million rotifers fortified with 10 g fortifier and 100 million artemia fortif...

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Abstract

The invention relates to a bastard halibut ecological marking method for release counting. The bastard halibut ecological marking method for release counting comprises the steps that firstly, bastard halibut spawns are distributed; secondly, when nutrient-enriched rotifer starts to be put for feeding when fry are 3 days old, wherein a nutrient enriching agent in the rotifer is added at the following quantity that 15 g of the nutrient enriching agent is used for every 100 millions pieces of rotifer when the fry are 3-11 days old, 25 g of the nutrient enriching agent is used for every 100 millions pieces of rotifer when the fry are 12-20 days old, and 15 g of the nutrient enriching agent is used for every 100 millions pieces of rotifer when the fry are older than 20 days; thirdly, when the fry are 12 days old, nutrient-enriched artemia starts to be put for feeding; fourthly, when the fry are 15-19 days old, compound feed starts to be put for feeding; the ecological marked-type bastard halibut is obtained and used for release bastard halibut counting study, wherein the nutrient enriching agent in the second step and the third step is prepared from DHA, EPA, vitamins and amino acid. By means of the method, the death rate is not increased, growth is not influenced, the maintaining time is long, markers are not likely to drop, the technological cost is low, quantization operation is easy, re-caught bastard halibut is easy to recognize, and wide application and popularization prospects are achieved.

Description

technical field [0001] The invention relates to an evaluation method for released flounder, in particular to an ecological marking method for released flounder for statistical purposes. Background technique [0002] Flounder (Paralichthysolivaceus) is mainly distributed in the Bohai Sea, Yellow Sea, East China Sea, South my country Sea, North Korea, and Japan. The living environment is mostly near the coastal waters with a depth of 20-50m and a smooth tidal current. Its habitat is mostly sandy mud, sandstone or rocky reefs. Flounder is a valuable warm-temperate, bottom-dwelling marine economic fish, and one of the important seawater economic fish in the northern coast of my country. [0003] Due to the previous excessive trawling, the wild resources of flounder in my country have declined seriously. For this reason, governments at all levels attach great importance to it, and spend a lot of manpower and material resources to carry out the proliferation and release of floun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K50/80A23K10/20A23K20/158A23K20/174A23K20/142A23K10/30
CPCY02A40/81
Inventor 于广宝李刚
Owner 全国水产技术推广总站
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