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Cultivation method for novel hybrid variety of female patinopecten caurinus and male patinopecten yessoensis

A technology of a shrimp scallop and a cultivation method, which is applied in the directions of fish farming, application, climate change adaptation, etc., to achieve the effects of strong stress resistance, wide adaptability and fast growth

Active Publication Date: 2018-09-18
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for cultivating a new hybrid variety of female Alaska scallop and male scallop, so as to solve the above-mentioned problems encountered in the cultivation and cultivation of the existing scallop

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The present invention selects and breeds the specific operation step of hybrid scallop new variety by the method for establishing hybrid population as follows:

[0015] 1) Select 100 large female Alaska scallops and 100 male Ezo scallops respectively, and bring them into the nursery room at the beginning of February, with a stocking density of 10 / m 3 , feed unicellular algae such as diatoms and flat algae with a concentration of 2-3 million cells / ml 6 times a day, and feed 15L / m each time 3 , Change one-half of the water every day, pour the pool every six days, and continuously inflate it with an air compressor. After entering the pond, the temperature is increased by 0.5°C every day, and the temperature is raised to 8°C for several days, and the amount of bait is gradually increased until the scallops reach sexual maturity. Select 50 female Alaska scallops and 50 male Alaskan scallops with mature gonads, dry them in the shade and stimulate them for 1 hour, then place ...

Embodiment 2

[0019] The present invention selects and breeds new varieties of hybrid scallops through the method of establishing hybrid families, and the specific operation steps are as follows:

[0020] 1) Select 100 female Alaskan scallops and 100 male Ezo scallops respectively, and bring them into the nursery room at the beginning of February, and cultivate the male and female of the two kinds of scallops separately, and the stocking density is 10 / m 3 , feed unicellular algae such as diatoms and flat algae with a concentration of 2-3 million cells / ml 6 times a day, and feed 15L / m each time 3 , Change one-half of the water every day, pour the pool every six days, and continuously inflate it with an air compressor. After entering the pond, the temperature is increased by 0.5°C every day, and the temperature is raised to 8°C for several days, and the amount of bait is gradually increased until the scallops reach sexual maturity. Select 50 female Alaska scallops and 50 male Ezo scallops wi...

Embodiment 3

[0024] At the end of February 2016, 5 mature female Alaskan scallops and 5 male Alaska scallops were taken, and after being stimulated by heating and drying in the shade, Alaska scallop eggs and Ezo scallop sperm were obtained respectively, and Alaska scallops were added to 10 -6 After 20 minutes of chitosan treatment, the sperm of Ezo scallop was inseminated, and three first-generation families of female Alaskan scallop×male Alaskan scallop hybrids were obtained.

[0025] As of December 17, 2016, the average shell height of the above optimal hybrid family is 42.0±1.6mm, shell length is 40.1±1.7mm, shell width is 9.0±0.6mm, weight is 6.52±0.90g, and the survival rate during the growing period is 95.8 %; the average shell height of the Alaska scallop control group in the same period was 38.0±2.7 mm, the shell length was 36.3±2.6 mm, the shell width was 7.9±0.8 mm, the body weight was 4.64±1.03 mm, and the survival rate during the growing period was 88.6%. Compared with the Alas...

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Abstract

The invention relates to a cultivation method for a novel hybrid variety of female patinopecten caurinus and male patinopecten yessoensis. The method comprises the following steps: in a first year, ova of the female patinopecten caurinus and sperms of the male patinopecten yessoensis are separately obtained, and a female patinopecten caurinus x male patinopecten yessoensis hybrid population or family is established; after the scallops reach sexual maturity, the scallops with large individuals are separately selected from the above hybrid population or optimal hybrid family according to a ratioof female to male of 3:1, and self fertilization propagation expanding is separately performed in the population; and according to the same method, breeding is performed for consecutive four generations, so that the novel hybrid variety with good traits of the two scallops can be obtained. The novel variety provided by the invention grows fast, and has wide adaptability and strong stress resistance, an individual weight of the novel variety is 20% or more higher than that of the patinopecten yessoensis, and the survival rate is improved by about 10%; and the novel variety is suitable for being bred in sea areas of northern China such as Dalian Changhai and Shandong Changdao.

Description

technical field [0001] The invention belongs to shellfish breeding technology, in particular to a method for cultivating a new hybrid variety of female Alaska scallop and male Ezo scallop. Background technique [0002] Alaskan scallops ( Patinopectencaurinus ) is a cold-water large scallop native to the sea area from Alaska to California in the northeastern Pacific Ocean. It has high heterozygosity, rich genetic diversity, and narrow temperature adaptation range. The shell muscle is hypertrophic, the meat yield is high, and the taste is delicious. Therefore, Alaskan scallop processed products are very popular in Europe and the United States, and are recognized as one of the excellent cultured species in the world. [0003] Ezo Scallop ( Patinopecten yessoensis ) is native to Japan, Russia, North Korea and other places. Since it was introduced into China by the Liaoning Ocean Fisheries Research Institute in 1982, it has been artificially bred in Shandong, Liaoning and othe...

Claims

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Application Information

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IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 王春德林基亮魏振禄刘博刘桂龙马斌
Owner QINGDAO AGRI UNIV
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