Carp is a freshwater fish native to Asia.
Widely distributed.
On the mainland,
Carp has a long history as an edible fish and ornamental fish,
There are also more artificially bred hybrids.
In the Yangtze River Basin,
The problem of genetic contamination of wild carp has attracted more and more attention.
this year
Wanzhou pioneered the artificial breeding of carp in the Yangtze River.
It is planned to breed and form a stable strain of Yangtze carp,
Conservation of native species.
Aquatic researchers catch and screen wild carp in the Yangtze River.
March to May is the breeding season for most fish.
Starting in March of this year,
Wanzhou District Fisheries Research Institute Union
Wanzhou District Agricultural Comprehensive Administrative Law Enforcement Detachment,
Multiple waters in the Wanzhou section of the Yangtze River
Harvesting and screening of wild carp in the Yangtze River,
It is used for artificial breeding and breeding of offspring.
Aquatic researchers catch wild carp in the Yangtze River.
According to Yang Jiagui, director of the research office and senior engineer of the Wanzhou District Fisheries Research Institute, due to the irregular release behavior, the carp species in the Yangtze River are relatively mixed, which has caused genetic pollution. "Now, we purify the Yangtze carp by releasing them after breeding. If we don't, then the impure strains of carp will breed with each other, and the original Yangtze carp will disappear. ”
Aquatic researchers carry out artificial labor induction.
In the past month,
万州区水产研究所共在长江挑选出
There are more than 120 carp in the wild.
These carp have also been genetically matched.
Make sure it's purebred.
meanwhile
Aquatic researchers also compared the carp after genetic comparison
From the appearance, gonadal condition, etc
Further screening was carried out,
The best of the best.
Aquatic researchers further screen wild carp.
After rigorous screening,
Eventually, there were 25 groups of carp
As a parent of the Yangtze carp,
Successfully completed the artificial induction of labor,
Start the first generation of breeding.
It is understood that
The well-known Yellow River carp in the Yellow River basin of the mainland
In the past, it also faced the problem of mixed varieties.
Started in 1985,
Systematic breeding of Yellow River carp in mainland China,
After multiple generations of selective breeding,
The carp strain of the Yellow River was stabilized,
Germplasm resources are protected and restored.
Aquatic researchers carry out artificial labor induction.
According to reports,
presently
There is no institution in the country to breed the Yangtze carp.
This year, Wanzhou declared artificial breeding of Yangtze River carp
Such a pioneering work,
It is planned to be bred through five generations
A stable strain of Yangtze carp was formed.
Reporter |
Editor|Fan Qing, Zhang Rong
Editor|Xiang Dong, Yang Yuangang
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