Shanghai Zhuji Yangcheng Lake Hairy Crabs Store (Zhu Ji Xie Zhuang)Shanghai Zhuji Yangcheng Lake Hairy Crabs Store (Zhu Ji Xie Zhuang)
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40,000 crabs released into the river

Ecological protection and restoration of the Changjiang estuary has always been highly valued. Since 2002, Shanghai has adopted a series of measures of ecological restoration, when releasing a long Kiss , the Chinese Mitten Crab, mouth culter Erythroculter ilishaeformis, dark Obscurus and a variety of benthic organisms. In 2005, Shanghai fisheries resource releasing funds into budgets, municipal financial releasing capital of 4 million Yuan, the year after growing. This year, the municipal finance has millions of Yuan into releasing funds, releasing the standardized and scientific level continues to increase, releasing effect is gradually carried out.

the start of "the qingcaosha reservoir in Yangtze River estuary adjacent waters ecological restoration projects" for a period of 5 years, funding comes mainly from construction and development of Shanghai qingcaosha investment Ltd and Shanghai East wind power compensation of 33.5 million ecological restoration of gold. Mainly important aquatic organisms by releasing, habitat restoration and measures such as the construction of new reefs, the traditional fishery resources restoration, fisheries production remained stable, the protection of endangered species, and aquatic organisms for the qingcaosha reservoir adjacent waters to create a good Habitat, stable community structure of aquatic organisms, and provide scientific and technological support for socio-economic development of the Yangtze River estuary and ecological protection.

because of the vast wetland in the Yangtze estuary is the largest natural spawning of Eriocheir sinensis, changes in the quantity and quality of its output, the Yangtze River estuary ecological environment monitoring of certain indicators. Therefore, the Chinese Mitten Crab is releasing one of the main objects of important fisheries aquatic organisms. In addition, next year will release Chinese sturgeon, coilia ectenes, whitebait, Songjiang perch, yellow takifugu rubripes, Ridge-tailed white shrimp and other native species in the Yangtze estuary.

the restocking of the parent crab Eriocheir sinensis were 40,000, both Yangtze River seed or seed. 10,000 of them marked, is China's largest release the parent tag. These crabs are by Shanghai Municipal Commission of registration of improved germplasm identification, each specification only about 100 grams to 150 grams, according to male and female nature than investing 1:1 using double labeling label with a ring, each crab has a unique encoding, mark method was developed independently by China Sea Fisheries Research Institute, CAFS.

to science to implementation this times mass release activities, East aquatic Institute joint units, development out has dedicated of Pro-crab release patent device, crabs like sat "rotating Trojans" as, was placed diameter 1.2 meters of disc Shang, disc by fixed frequency each 30 seconds turned a circle, let crab a only only followed by through release hole, uniform smooth to sliding to release slot into water. According to experts introduced, in 40,000 only crabs in the, has 10,000 only crab wear has East aquatic Institute independent development of label and shaped with "watches" of sets ring, using this label can informed release Pro-crab of capture points, to calculation out they of migratory route, and migratory speed, and on spawning field environment of select, data, for Shanghai future established Yangtze River mouth Chinese velvet River crab national aquatic species quality resources reserves provides science according to.

according to experts, will collect and study mark after releasing crab capture points, get released crabs, migratory routes, speed of migratory, spawning environmental selection and adaptation, restocking Community contribution to wild populations, and so on. On this basis, can establish crabs release technology and spawning of protective measures, including release time, release, release, release quantities determined precise locations, and spawning spawning conditions, determination of spawning period of protection and so on. These research results will be for the establishment of the Yangtze estuary Chinese Mitten Crab national aquatic germplasm resources conservation areas provide important scientific evidence, and to the national and even global mass release of aquatic organisms to provide a useful reference.