On April 12, expert group enters pedestrian labour insemination to female spot turtle. Morrow, rescue of classics of this spot turtle is invalid die. Suzhou zoo offers a plan
Disable via 24 hours of rescue death; The whole world puts 3 only, china is current only remnant turtle of a male spot, vietnam still puts two but sexual distinction is unspecified
On April 13, the China that raises in Suzhou zoo produces an accident after classics of turtle of exclusive female spot is test-tube, rescue is invalid die. International terrapin lives allied (TSA) the data shows, the spot turtle with at present foregone whole world only remnant 3, among them Suzhou zoo still has turtle of a male spot, additionally two are in Vietnam, sexual distinction is unspecified.
Rao Dingqi of institute of animal of Kunming of the Chinese Academy of Sciences expresses, this one message makes a person regretful, but " still do not have the room for action that abandon " . He suggests to increase search field and individual strength, also should strengthen conduct propaganda at the same time, encourage the individual that has spot turtle possibly or orgnaization open letter to cease, so that farther breed.
Establish cadaver check group to investigate spot turtle cause of death
Chief Chen Daqing introduces related Suzhou zoo, on April 12, by the group that international expert forms and Suzhou zoo employee, the turtle of a male spot that puts only to China and turtle of spot of a female undertake picking essence of life and test-tube job. Occurrence accident of turtle of this female spot, through rescue of 24 hours, unfortunate on April 13 13 when die 20 minutes.
The data that Chen Daqing provides shows, be in this second before test-tube plan, expert group reviewed the medical treatment record in the past, consulted relevant expert, work preparation in order to assure (include emergency treatment plan) accomplish best. Additional, group expert still uses as same as this second job program, turtle of large to 3 male and 2 female Asia undertook picking essence of life and test-tube job. Before collecting essence of life and insemination formally, expert group undertook managing changing index and ultrasonic checkup to two spot turtle, discover their health in order. As test-tube as 4 of in the past activity is similar, test-tube process is successful, did not appear complex case.
Liu Nonglin of chief engineer of Chinese zoo association in total stage of Suzhou broadcasting television in interviewing, mention, after anaesthesia, that day 18 when make, ceng Su of turtle of this female spot wakes, have an action, "But discover it does not have a movement very quickly, sensory case is incorrect begin rescue. " introduce according to its, this process is less than half hours probably.
Through rescue of 24 hours, female spot turtle does not have come to one's senses and unfortunate death. Chen Daqing introduces, right exceeding for endangered spot turtle, this is " disastrous loss " . In expert group collected ovarian organization and saving liquid nitrogen, in order to have future is used. Task group decides establish the cadaver check group that forms by domestic and international expert, in order to find out cause of death.
Will 5 years undertake 4 times in succession test-tube all abortive
Spot turtle (Rafetus Swinhoei) it is the world go up turtle of the biggest fresh water, back armour can is as long as 1500 millimeter, weight can amount to 115 kilograms. Spot turtle belongs to world nature to protect alliance (IUCN) in directory of endangered species red extremely danger species.
International terrapin lives allied (TSA) the data shows, before turtle of this female spot dies, the spot turtle with foregone whole world is 4, among them two are in Vietnam, additional two are in Suzhou zoo, occupy a letter 100 years old or so. Suzhou zoo the death of turtle of this female spot, mean remain 3 only at present.
Public data shows, the female spot turtle that this dies only comes from Changsha zoo, because combine progenitive need, 2008 " marry toward " Suzhou zoo. Protection of wild living things learns international (WCS) information shows, this society and international terrapin live allied (TSA) , the unit such as Suzhou zoo, Changsha zoo and Chinese zoo association undertook cooperative, eradicate in order to prevent this one species. Through attempt of 6 years, fail to succeed natural breed. Although the staff member observes copulatory behavior, this still is produced to spot turtle laid hundreds egg, but neither one hatch is successful.
The reproduction that undertook 2015 is evaluated show, fasten damage of genital of male spot turtle, bring about cannot normal breed. Of the same age, test-tube job is started. Protection of wild living things learns international (WCS) write in government-owned net: "Test-tube it is farther breed the optimal opportunity of this species. " " Suzhou daily " Ceng Kan sent a report to say in May 2015, carry out spot turtle first test-tube, "Successful word, predict hopeful of turtle of 89 month flyspeck is born. Predict hopeful of turtle of 89 month flyspeck is born..
But actually, will undertake 4 times in succession from 2015 test-tube all abortive. On April 12, it is this enter pedestrian labour insemination the 5th times to spot turtle. Liu Nonglin introduces, the seminal quality of turtle of this only male spot is poorer, vivid spermatozoon is less than 20% , "Theoretic this kind of spermatozoon is very afflictive essence of life. "Theoretic this kind of spermatozoon is very afflictive essence of life..
Additionally two foregone survival spot turtle are located in Vietnam respectively east Mo Hu (Dong Mo Lake) with Xuan Hanhu (Xuan Khanh Lake) inside, sexual distinction is unspecified.
■ focus
Why is spot turtle species in severe danger so?
There is research document to show before this, spot turtle ever distributinged extensively at catchment of the Yangtse River (Qian Tangjiang, too lake) He Gonghe catchment. Why can the amount of Chinese spot turtle produce dramatic change? The the Chinese Academy of Sciences is in charge of " scientific times " (show a name to be " Chinese science signs up for " ) Ceng Kan article says, a main reason, because,be the mankind " not quite know " spot turtle. Until 100 old before, spot turtle just is known by the mankind slowly.
1873, a few when an England consul that British scholar John Gray will be stationed in Shanghai captures around Shanghai big turtle are surely plant newly, name for this family name turtle (Osaria Swinhoei) . Later, scholastic Mei Erlan will this family name turtle (Osaria Swinhoei) is changed for Rafetus Swinhoei. According to research, of Gray denominate this family name turtle is spot turtle actually. But our country scholar studies without any follow-up almost, whether be even it even plant effectively, its geography distributings and life characteristics also utterly ignorant, spot turtle is thought by the fault normally China turtle or soft-shelled turtle.
The turtle that it is spot the name is last centuries the thing of 90 time. At that time, suzhou zoo fastens construction to support biology of institute of Suzhou science and technology, ever gave two common to say " soft-shelled turtle of n/med leprosy head " specimen of big soft-shelled turtle. Department of biology of institute of Suzhou city science and technology teachs Zhao Ken hall to wait to its skull, back, breastplate had careful research, discover these two " soft-shelled turtle of n/med leprosy head " it is spot turtle. Through old research, zhao Ken hall offerred a large number of evidence, proving spot turtle is a distinctive species, it is the turtle that it is spot renown the first person.
The another account that drama of spot turtle amount reduces is a habitat -- too lake and other places sufferred the factitious interference such as pollution. And, chinese all along likes to enter filling terrapin kind, among them spot turtle is individual big, target is remarkable, be arrested more easily kill. And in be being raised artificially, the life propensity that does not know spot turtle lets spot turtle easily " change life " .
The text that institute of animal of Kunming of the Chinese Academy of Sciences releases says, spot turtle ever was ignored unidentified and for a long time because of classifying a position, just get affirming in taxology bound till 1987. For this, the protection of spot turtle and administrative job are affected, home do not include what promulgated 1989 his even " directory of wild animal of national emphasis protection " .
■ examine minutely
How is endangered spot turtle protected
On specific safeguard, experts put forward " walking on two legs " . Besides promote foregone spot turtle breed, seek field and individual job also afoot. Main goal zone is region of Yunnan red river.
Rao Dingqi of institute of animal of Kunming of the Chinese Academy of Sciences is engaged in spot turtle relevant research makes an appointment with 6 years, he what basically be engaged in field inspecting the job in region of Yunnan red river introduces, this catchment once had appeared spot turtle. 50 time go to the century on 70 time, the spot turtle of red river region is sufferred those who have an organization is many catch, partial live body flows into a few zoos of domestic such as an old, Kunming, Beijing, Shanghai to raise subsequently (have a plenty of with old zoo is exchanged) , and also collected this period institute of biology of Chengdu of Shanghai natural museum, Chongqing nature museum, the Chinese Academy of Sciences to collect the spot turtle sample from Yunnan red river respectively. And, be located in the Vietnam with red downstream river to ever also discovered feral spot turtle. These information show, fixed position has mark to here but abide.
Came 2014 2016, rao Dingqi ever received doubt to be like the report that discovers spot turtle, but fail to be checked further. 2017 is a noiseless year, a bit information is done not have, till this year the beginning of the year just receives the information that doubt appeared turtle of the spot that witness 2018 again, but still did not get confirming. Its say, red river region is vast, the time that spot turtle appears is short also, plus cannot close quarters observation, because this confirms the identity hard.
But Rao Dingqi believes, do not eliminate the possibility with existence individual field. The death of turtle of spot of Suzhou zoo female makes a person regretful, at the same time also caution people: Accident circumstance may happen at any time. "Cannot wait again. " he suggests to increase search field and individual strength, also should strengthen conduct propaganda at the same time, encourage the individual that has spot turtle possibly or orgnaization open letter to cease, so that farther breed. "Be less than at the last gasp, do not want to abandon. Do not want to abandon..
In the meantime, his Ceng Zhuanwen points out, the spot turtle of red river region, no matter Chinese Yunnan or Vietnam, begin to pay close attention to from 2006 up to now, had not discovered its the young is mixed inferior adult. Accordingly conjectural spot turtle is in in at latest of red river region on had failed to breed normally at the beginning of century end or this century. The action that saves spot turtle is sterner and sterner and pressing, the time of place remnant and opportunity are already very few.
On April 15, participate in this spot turtle the foreign expert of test-tube job the reply expresses Jielade Kukelin, he hopes can with two foregone Vietnam feral spot turtle is a foundation, breed project is developed in Vietnam. In addition, hope Vietnam and China can discover more spot turtle are individual.
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