Method for synchronous development control of scapharca broughtonii in different geographical populations

A technology for synchronous development of clam gonads, applied in the field of marine biology, can solve problems such as asynchronous development of clam gonads

Inactive Publication Date: 2017-03-22
中国水产科学研究院长岛增殖实验站
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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 establish a mature and stable technical system capable of controlling the synchronous development of gonads of different geographical groups of cockles by controlling the water temperature and bait collocation in the process of promoting the ripening of cockles, and combining with the method of anatomical microscope examination, thereby Solve the problem of asynchronous development of gonads in different groups of cockles, make the hybrid breeding of cockles feasible and easy to operate, and provide technical support for the smooth selection of cockles hybridization

Method used

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  • Method for synchronous development control of scapharca broughtonii in different geographical populations

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Embodiment 1

[0028] 1. Selection of shellfish

[0029] On February 18, 2014, 1,000 wild cockle broods were collected in South Korea and Long Island respectively. Cockle broods should be selected from wild cockles living in deep water and relatively low temperature (4-6°C) sea areas, with an average shell height of 8.5 cm, 2-4 years old broodfish, normal body shape, no shell defect, plump soft body, good vitality. The water temperature of the South Korean parents was 5.7°C, and they were shipped in an incubator, sealed tightly with tape, filled and compacted to prevent death or frostbite due to dehydration of the shells of the parent shells. The water temperature of the Long Island parents was 4°C.

[0030] 2. Respite at sea

[0031] On February 19, 2014, the parents of the cockles from different geographic groups were collected and transported to the Miaodaotang sea area of ​​Changdao for temporary temporary rearing. The sea area is less windy, tidal and plentiful in bait. The temporary ...

Embodiment 2

[0042] 1. Selection of shellfish

[0043] On March 9, 2015, wild cockles were collected from the Pacific coast of Japan and Dalian, China. 1000 individuals were collected from each of the two populations. 8 cm high, 3-4 years old, normal body shape, no shell defect, plump soft body, good vitality. The water temperature of the Japanese parents was 5.4°C when they were collected, and they were shipped in an incubator, sealed tightly with tape, filled and compacted to prevent damage or death due to the loss of water in the seed shells. The water temperature of the Dalian parents was 4.7°C.

[0044] 2. Respite at sea

[0045] On March 10, 2015, the parents of the two geographical groups of clams were transported to the Miaodaotang sea area of ​​Changdao for temporary temporary breeding. The wind, waves and tides in the Miaodaotang sea area of ​​Changdao are relatively small and the bait is abundant. The temporary raising method is hanging scallop cages, 5 brood shells are placed...

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Abstract

The invention relates to a method for synchronous development control of scapharca broughtonii in different geographical populations. The method is characterized by including steps: acquiring scapharca broughtonii parents in geographical populations A and B, temporarily culturing in the sea, heating indoors for maturity promotion, and performing dissection and microscopic examination in a process of heating for maturity promotion to control synchronous development of scapharca broughtonii in different geographical populations. By collection for temporary culturing and heating for maturity promotion of the scapharca broughtonii parents in the different geographical populations and by temperature and bait regulation in the process of heating for maturity promotion, synchronous gonadal maturity of the scapharca broughtonii parents in the different geographical populations is guaranteed while spermiation and ovulation are realized, feasibility and easiness in operation of cross breeding are achieved, scapharca broughtonii hybridization breeding is technically supported, and development of the shellfish industry is promoted.

Description

technical field [0001] The invention relates to key technologies in shellfish hybrid breeding, in particular to a method for controlling the synchronous development of gonads of clams in different geographical groups, and belongs to the technical field of marine biology. Background technique [0002] Scapharca broughttonii Schrenck, commonly known as red clams and large hairy clams, is a large bivalve mollusk that lives in camps. It lives on muddy or muddy seabeds with a water depth of 3 meters near the shore to nearly 50 meters in the open sea. Distributed in the Sea of ​​Japan, the Yellow Sea, the Bohai Sea, and the East China Sea in the northwest of the Pacific Ocean. my country’s Liaodong Peninsula, Shandong Peninsula, and the East China Sea are rich in resources. The northern Yellow Sea has the most concentrated resources of clams, and is famous for its large output and high quality. Clam meat is delicious, nutritious, and of high economic value. It is a marine treasur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCY02A40/81
Inventor 于涛蔡忠强郑言鑫吴彪林建国赵春暖
Owner 中国水产科学研究院长岛增殖实验站
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