The world's endangered species, known as the "giant panda in the water", the peach blossom jellyfish was found in the park outside the community!
Last weekend, the owners of a community near the Daguanyan Ecological Park in Chengdu's Jinjiang District were buzzing, and everyone was discussing the discovery of a very rare peach blossom jellyfish in the lake outside the community. On September 7, netizen "Chengdu Knife and Knife" told Red Star News that at about 4 p.m. on the 5th, he took his child to fish in the park pond outside the community to play, and inadvertently caught peach blossom jellyfish.
Zhao Li, director of the Chengdu Huaxi Insect Museum, said that from the preliminary judgment of morphology, it should be a Sichuan peach blossom jellyfish, and its antennae are shorter than those of the Chinese peach blossom jellyfish. "But for accurate classification, it is best to determine it through genetic sequencing."
According to reports, the peach blossom jellyfish is a primitive and inferior invertebrate, which was first born about 550 million years ago. Expert research believes that peach blossom jellyfish is a veritable "living fossil", which records the development process of life on earth with its own unique life formation, and is also known as "giant panda in the water".
Zhao Li introduced that peach blossom jellyfish have been found in Chengdu and even in many places in Sichuan, but they have been judged to be Chinese peach blossom jellyfish. The peach blossom jellyfish found in 1984 in Qingcheng Mountain in Dujiangyan was confirmed to be a unique species in Sichuan - Sichuan peach blossom jellyfish. The sign board of Chengdu Daguanyan Park has an introduction to the irrigation system belonging to Dujiangyan, according to which it is speculated that the Sichuan peach blossom jellyfish of Daguanyan may have come from Dujiangyan.
Whether the discovery is a Sichuan peach blossom jellyfish, Huang Ke, deputy secretary-general of the Chengdu Bird Watching Association, said that the industry has different views on the classification of peach blossom jellyfish, what is the population, it is best to determine it through genetic sequencing.
↑Bring back the peach blossom jellyfish in the museum Zhao Li photo
『Discovery』
Citizens take their children to the pond to catch fish
Accidentally fished out peach blossom jellyfish Some people say it is the size of a coin
On September 7, the netizen "Chengdu Knife Knife" who lives near the Daguanyan Ecological Park in Jinjiang District told the Red Star News reporter that at about 4 p.m. on the 5th, he took his child to fish in the park pond outside the community and accidentally caught a small creature that was different from the fish. Carefully identified, it was found that it should be a peach blossom jellyfish.
"This (pond) was originally a pristine pond with a lot of small fry, and the children in the surrounding communities should have fished and fed the ducks here." As a "Chengdu knife" whose parents have worked in a nearby old factory and are also the first owners of a nearby community, this pond also has a very "bumpy" experience.
He said that the pond in the ecological park was originally "wild", but later because of the city construction, it was partially filled and turned into a stinky pond. Later, after urban transformation and construction, coupled with recent years, the owners and management companies of the community have been working hard for the ecological transformation and protection of the pond, forming the environment of the current ecological park urban greenway.
On the morning of September 7, Red Star News reporters came to Daguanyan Ecological Park, an open park greenway with narrow and long waters.
Along the greenway, the Red Star News reporter walked to a wooden platform, and soon found the figure of the peach blossom jellyfish in the water, the umbrella cover in the water one by one, floating up and down, and several obviously visible tentacles, the overall translucent state.
↑ Peach blossom jellyfish in the park pond Photography Wang Hongqiang
The Red Star News reporter walked along the park's greenway and found peach blossom jellyfish in many places. Nearby residents at the scene said that they heard other neighbors say that there are jellyfish here, and they came to see it.
Mr. Pu, who is in charge of the park security patrol, told Red Star News that he also noticed it after listening to nearby residents say that there are peach blossom jellyfish in the water. Judging from the recovered jellyfish, the large ones are the size of a dollar coin, and the small ones are also the size of a dime coin, and when there are many of them, they are "in groups".
Mr. Pu also said that he deliberately went back to the Internet to check, peach blossom jellyfish on the water quality requirements are particularly high, to be weak acidic water will have, "indicating that now the ecology is good, the water quality is good." ”
『Review』
Peach blossom jellyfish have appeared in many places in Sichuan
It was first born 550 million years ago and is known as a "living fossil"
↑ Peach Blossom Jellyfish Photography Wang Hongqiang
According to the data, the peach blossom jellyfish is a small jellyfish living in the family Hydra, freshwater jellyfish, and the family Kasa, also known as peach blossom fish, parachute fish, hydra jellyfish and so on. 11 species have been recorded, jellyfish body diameter 1.5-2 cm, with many tentacles.
According to people's daily news, peach blossom jellyfish is the only small jellyfish that lives in freshwater, living in clean rivers and lakes, and is a world-class endangered species. Peach blossom jellyfish is a veritable "living fossil", with high research value and ornamental value, as a species formed by biological evolution, its status is not inferior to that of giant pandas.
In addition, the peach blossom jellyfish is a primitive and inferior invertebrate, first born about 550 million years ago.
In fact, peach blossom jellyfish is not the first time to appear in Sichuan. In Chengdu and other cities and prefectures in Sichuan, peach blossom jellyfish have also been frequently found in recent years.
In 2014, a large number of peach blossom jellyfish were found in Chengqing Lake in Dujiangyan City; in July 2019, peach blossom jellyfish were found in Lotus Lake in the city; in July 2020, the Antiman Tourism Ecological Resort in Puyang Street, Dujiangyan City, also surprised the large area of peach blossom jellyfish.
In June 2020, some unknown aquatic organisms were found in a fire reservoir in a factory area in Xiejia Street, Pengshan District, Meishan City. After testing and identification by relevant experts, it was confirmed as a "peach blossom jellyfish" that was on the verge of extinction.
In June 2020, property workers in a small district near Hongpai Road Station of Metro Line 3 in Wuhou District, Chengdu showed a video taken by residents of the community. It can be clearly seen that the parachute-shaped, almost transparent jellyfish swims in the water.
In July 2020, luzhou citizens found peach blossom jellyfish in the water landscape of a community in Longmatan.
On April 30, 2021, according to China News Network, peach blossom jellyfish were found in a pool in a unit in Langzhong City, Sichuan Province.
『Explanation』
Daguanyan is also an irrigation system of Dujiangyan
From the morphological preliminary judgment is Sichuan peach blossom jellyfish
At 6 p.m. on September 6, Zhao Li, director of the Chengdu Huaxi Entomological Museum, received a message from residents near the Daguanyan Ecological Park that "peach blossom jellyfish were found" and rushed to the Daguanyan Ecological Park.
"I didn't see it at first, asked a few residents, and said I didn't know." Zhao Li said that later an uncle confirmed that he did see a lot on the 5th, and enthusiastically took them to the place where the peach blossom jellyfish was found, and also helped salvage.
"In the end we caught 4." Zhao Li said that from the preliminary judgment of morphology, it should be a unique species of Sichuan - Sichuan peach blossom jellyfish, and its antennae are shorter than those of Chinese peach blossom jellyfish. "But now for accurate classification, it's best to determine it through gene sequencing."
At present, there are 11 species of peach blossom jellyfish, of which 9 species have been found in China. Zhao Li explained that in fact, in Chengdu and even many places in Sichuan, the peach blossom jellyfish found have been judged to be Chinese peach blossom jellyfish. "This peach blossom jellyfish has a wide distribution area, and it has appeared in the middle and lower reaches of the Yangtze River." The peach blossom jellyfish found only in 1984 in Qingcheng Mountain in Dujiangyan was confirmed to be a unique species of Sichuan - Sichuan peach blossom jellyfish.
Zhao Li said that the sign board of Daguanyan Park also has an introduction to the irrigation system belonging to Dujiangyan, according to which it is speculated that the Sichuan peach blossom jellyfish of Daguanyan may be from Dujiangyan.
The reporter noted that in the introduction of the general plan of the Daguanyan Ecological Park, Daguanyan has a history of thousands of years, was once an integral part of the water system of the Dujiangyan Irrigation District, was the habitat of fish and water birds, and was once called the "kidney of the city" together with other weir ponds around it.
An owner told Red Star News that after learning that peach blossom jellyfish are endangered animals, the mothers who have salvaged peach blossom jellyfish in the community put them back into the water.
↑ Daguanyan is also the water system of Dujiangyan Irrigation District
Huang Ke, deputy secretary general of the Chengdu Bird Watching Association, maintains a more cautious view of whether the peach blossom jellyfish found in the Daguanyan Ecological Park is more cautious. He said that the industry has different views on the classification of peach blossom jellyfish, and what exact population is, it is best determined by genetic sequencing.
The peach blossom jellyfish found in Wuhou District of Chengdu in 2020, Huang Ke also visited the scene. He said that compared with what was found in the Daguanyan Ecological Park this time, it was indeed different in form.
『Clarification』
Unlike jellyfish in the ocean, it is very toxic and weak
The separation of the jellyfish requires high water quality
We often hear that jellyfish are marine life, so why can we see jellyfish inland? Zhao Li explained that peach blossom jellyfish are the only type of freshwater jellyfish in the world, and they still have many differences from jellyfish in the ocean. "Although peach blossom jellyfish are also spiny, they are not the bowl jellyfish to which most jellyfish are subordinate, but the hydra. The way of taxonomy is that phylum, order, family, genus, species, they are different in the order, so the relationship is a bit distant. ”
Zhao Li also said that most of the jellyfish in the ocean are more toxic, while the spiny cytotoxicity of peach blossom jellyfish is very weak.
Zhao Li believes that this statement is not accurate because the life history of peach blossom jellyfish is alternate between asexual reproduction and sexual reproduction, and the life cycle is about two years. When in the body of the hydra, it is very small, attached to silt, rock, and even in drought, it will form a film to protect itself and is difficult to detect. When the environment adapts, the jellyfish form is isolated, and it is easy to be found, "So the appearance of the jellyfish form for reproduction indicates that it has existed for at least two years." ”
Zhao Li said that when the hydrate is formed, the water quality requirements are not high, and when it comes to separating the jellyfish, it is required that its water quality conditions are relatively good and weakly acidic.
Zhao Li said that the "China Red Species List" published in 2004 made an authoritative hierarchical demonstration of 9 species of peach blossom jellyfish growing in China. Among them, Chinese peach blossom jellyfish and Xinyang peach blossom jellyfish are non-endangered species, Yichang peach blossom jellyfish and Jiading peach blossom jellyfish are vulnerable species, Chuxiong peach blossom jellyfish and Hangzhou peach blossom jellyfish are near-threatened species, Zigui peach blossom jellyfish and Sichuan peach blossom jellyfish are endangered species, and short-handed peach blossom jellyfish are endangered or even critically endangered species.
For the peach blossom jellyfish symbolizes the cleanliness of the water body, Huang Ke, deputy secretary general of the Chengdu Bird Watching Association, also said that it can only be said that it can only be said to be relative conditions, because peach blossom jellyfish have also appeared in pools, pools and other places.
Red Star News reporter Yu Zunsu photojournalist Wang Hongqiang
Edited by Yu Manga
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