Method for breeding first-filial generation commodity spats by hybridizing female Alaska scallops and male Japanese scallops

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

Active Publication Date: 2018-09-14
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 the first-generation commercial seedlings of female Alaska scallop and male Alaska scallop, so as to solve the problems encountered in the existing Alaska scallop seedling cultivation and cultivation

Method used

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Experimental program
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Embodiment 1

[0013] Concrete operation steps of the present invention are as follows:

[0014] 1) Establishment of female Alaska scallop production population: Select 50 male and female Alaskan scallops and 50 male Ezo scallops, and bring them into the nursery at the beginning of February. The male and female of the two kinds of scallops are cultivated 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 respectively 25 male and female Alaska scallops with mature gonads and 25 male Ezo scallops, dry them in the s...

Embodiment 2

[0020] At the end of February 2016, 5 mature female Alaska scallops and 5 male Alaska scallops were taken, and after being stimulated by warming and drying in the shade, Alaska scallop eggs and Ezo scallop sperm were obtained respectively. Alaska scallop eggs were added with 10 -6 After being treated with chitosan for 20 minutes, the sperm of Scallop scallop was inseminated, and 3 female Alaska scallop x male scallop hybrid offspring families were obtained.

[0021] As of December 17, 2016, the average shell height of the best hybrid family is 42.0±1.6 mm, shell length is 40.1±1.7 mm, shell width is 9.0±0.6 mm, weight is 6.52±0.90 grams, and the survival rate of the grow-out period is 95.8% The average shell height of the Ezo 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 weight was 4.64±1.03 mm, and the survival rate during the grow-out period was 88.6%. Compared with Ezo scallop, the shell heigh...

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Abstract

A method for breeding first-filial generation commodity spats by hybridizing female Alaska scallops and male Japanese scallops is characterized in that firstly, multiple half-sibling hybridized colonies of female Alaska scallops and male Japanese scallops and respective self-reproducing colonies are respectively built; optimal hybridized colonies are selected, and their corresponding parent self-reproducing colonies respectively become female Alaska scallop breed production colonies and male Japanese scallop breed production colonies for commercial reproduction; after sexual maturity of the scallops is reached, ova of the female Alaska scallop breed production colonies and sperms of the male Japanese scallop breed production colonies are hybridized to reproduce first-filial generation commodity spats. The obtained first-filial generation commodity spats have the advantages of the two scallops, are quick to grow, wide in adaptation and good in stress resistance, are suitable for breeding in sea areas in the in northern China, the yield of the spats is improved by more than 20% compared with Japanese scallops, the survival rate is improved by about 10%, and it is hoped that the method is widely applied in the future.

Description

technical field [0001] The invention belongs to shellfish breeding technology, in particular to a breeding method for producing hybrid first-generation commercial seed by using female Alaskan scallop and male Azo scallop. Background technique [0002] Alaskan scallops ( Patinopecten caurinus ) 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 Scallops ( Patinopecten yessoensis ) is native to the waters of Japan, Russia, and North Korea. Since it was introduced into China by the Liaoning Institute of Marine Fisheries in 1982, it has been artificially bred...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 王春德刘桂龙魏振禄刘博林基亮马斌
Owner QINGDAO AGRI UNIV
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