fish mortality

Power generation "drained" reservoir 850 tons dead fish, hypoxia
2013/5/25 9:45:00 text / Chart: reporter Jiang Feng
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Hundreds of tons of dead fish floating in the Kazakh town that Mojiang County Sinan River hydroelectric reservoir, and some have stunk. Zhihua said on behalf of farmers, 20 May onwards, they found the fish began to die, until yesterday own fish had died four fifty tons, the "year dry white." The same as the generation of the affected farmers Zhihua, official statistics for the 45, totaled 854.4 tons of dead fish, losses close to $ 10 million.

Generation Zhihua said, because Sinan River Reservoir hydropower generation, water levels declined sharply, leading them to fish with Wang Xiangyang hypoxic death.

A large number of fish deaths, farmers suffered heavy losses.

Recently, a large number of dead fish reservoir

"Our fish are dead!" Yesterday morning, on behalf Zhihua anxious call the newspaper reflect the situation. April 2010, he through loans, etc., to raise 50 million ha in Mojiang County township that Sinan River Hydropower Station Reservoir started cage culture. "My family's fish, is the 20th death begins." In August last year, Johnny has just raised a generation of 25 cartons of fish, each box there are more than 4000 tail, each tail has four public more than two of these fish are tilapia Lord, in addition to some catfish, freshwater white shark, etc., if not an accident, these fish revenue of nearly one million yuan.

Since the discovery of dead fish from the 20th, on behalf Zhihua family had died two thirty tons of tilapia, count other fish, totaling forty to fifty tons. Like generations Zhihua home-like calamity, he said there are four fifty farmers, dead fish is estimated to reach fifty-six one hundred tons. "The situation is very serious, we have to township and county reflect on the situation." Generation Zhihua said.

Generation Zhihua said, two years ago also found dead fish, hypoxia situation, but are not so serious this year. He believes that the water level is high, the fish is not easy to hypoxia, but the last few days since the water reservoir because power generation more water line low compared to previous years this time three or four meters, the water level declined sharply, resulting hypoxic fish deaths.

Experts say the drop of water level caused by dead fish, hypoxia

That Ha Township deputy mayor in charge of fisheries Zhouxiao Cong believes that this year the drought, the reservoir water storage is small, coupled with Sinan River Hydropower Station is the impoundment and power generation, in the absence of runoff, runoff or less in the case of electricity, the library District level drops more quickly. Currently, Sinan River hydropower reservoir water level has dropped compared to previous years maximum period of twenty meters. He said: "The water level drops too fast, fish easy to hypoxia."

大量鱼死亡，养殖户损失惨重。

Zhouxiao Cong said Sinan River Hydropower Station Reservoir Total fish cages over 2600, out of the dam downstream farmed fish have been found in the phenomenon of death, upstream of the current situation is most serious, as the specific cause of death of fish, "the current the parties are still investigating the disaster more serious, the village take no conclusions have been reported to the county and ask them to mediate and resolve. "

Expert Group on Fisheries Technology Extension Station of Yunnan Province through the investigation that led to the cause of death of fish cage culture, initially identified as the water level is too low, the water level dropped too quickly and causing local hypoxia, the current disaster has continued to spread downstream trend.

Government to take urgent measures to reduce losses

Yesterday evening, Mojiang county propaganda department issued a disaster communications, the paper said that from May 20 midnight, Sinan River Hydropower Station Reservoir ecological tilapia cage culture, emerging case of dead fish, as of yesterday, 14:30 , 45 767 farmers cages 854.4 tons of dead fish, fish deaths 2,924,000, is expected to reach 9.1288 million yuan of economic losses.

Mojiang county government now initiate the following emergency relief measures, one organized farmers downstream deepwater dragging the net box; two is to ask farmers to prepare oxygen machine, oxygen unified distributed to farmers pink 2000 bags, improve water containing oxygen; Third, actively coordinating fish processing plants, production and processing every effort to achieve full load operation; four is to coordinate Contact Sinan River hydropower generating capacity reductions, controlling the water level dropped speed; five is to organize personnel to conduct salvage of dead fish, good sound processing, and water disinfection; six is ​​to organize Fisheries Technology Extension Station expert team to the disaster area to investigate; seven is good idea to divert the affected farmers to resume production and the next one preparatory work.

Generation Zhihua confirmed dead fish, the government in accordance with the price of 3 cents per kilogram recycled do sound processing.

Hydroelectric power generation being negotiated suspension aftermath

Yesterday, Sinan River Hydropower office a staff telephone interview with reporters, confirmed yesterday evening has been suspended hydroelectric power generation.

"Every year pre-flood generation." He said reservoir tube station owned by the villagers fish in the reservoir area is determined by the contract signed by the government and hydropower, the villagers do not need to pay. Under the agreement, the water level at 860 m -900 m fluctuated between normal changes, but daily fluctuations should not exceed 5 meters, more than the county government will have to inform MOJIANG.

The staff said, power generation, flood, will lead to changes in water level, at present, the reservoir water level is 862.9 meters, 860 meters from the dead water level is only 2.9 meters. Dead water level means that, to this level, not from the water reservoir and then generate electricity. But last year's level, have been to just under 2.9 meters from the dead water level of this position, but in recent days the reservoir water level changes in the hydropower express range.

"Initially we do not understand death of fish farmers this thing." The staff member said, was Mojiang county government come to communicate, they only understand the situation, at present, the power station has been suspended, and when recovery has not been determined, farmers how to raise fish in the aftermath of a large number of deaths, will have to see the parties negotiated.
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Nanchang Huangjiahu now official investigation said a large area of ​​dead fish from water Weather May 23, 2013 18:10:22
Source: Nanchang Evening News 0 [Word Count:] [Print] [correction]
In recent days, the newspaper continued attention by the open area Huangjiahu a large area of ​​dead fish situation, caused by the relevant departments attach great importance. Yesterday morning, Nanchang Economic Development Zone Collaborative EPA, Jiao Town government and other departments at the scene investigating the cause of a large area of ​​dead fish and developed a related solutions, Huang lake water quality is expected to be raised.

[Authoritative statement]

A large area of ​​dead fish or caused by many reasons

Yesterday morning, the reporter with the EPA Environmental Protection two Nanchang, municipal environmental monitoring detachment, Economic Development Zone Social Development Board, Economic Development Zone Planning and Construction Bureau, through the open area of ​​municipal engineering company, Jiao Town Government the relevant responsible person came Huangjiahu aquatic field survey a large area of ​​dead fish causes.

Municipal Environmental Protection Environmental Protection two person in charge, said Zhang Xiaodong, Huang Lake is a relatively closed waters, only a small part of the surface runoff into the lake. "Previously, Huangjiahu large area of ​​dead fish appeared in the phenomenon, we have sent staff came to investigate, for many reasons." Said Zhang Xiaodong, in addition to water quality problems, dead fish was kind enough to weather and other factors.

Reporters learned that the dead fish phenomenon occurs mostly in 4-6 month rainy season, this time in Nanchang generally higher temperatures, resulting in low pressure oxygen in the water content is reduced, which also contributed to the death of one of the reasons a lot of fish.

[Pollution]

Sewage pipe caused sewage into the lake rip

◆ Location: Huangjiahu entrance

Sewage pipe caused sewage into the lake rip

1

Wide range of hotels in Atlanta Village road, is usha Huang river into the lake entrance, where the reporter saw a total of two shares of water imported Huangjiahu, one is more clear, and the other shares very muddy. Through the open area municipal engineering company officials explained that the more one is usha clear river water, while the other shares in the sewage, "south shore along the Yellow House has a sewage pipe, which shares are likely to be from sewage pipes rip outflow. "

According to reports, sewage pipes upstream distribution enterprises, some enterprises will produce large quantities of industrial waste water. According to relevant regulations, companies must deal with industrial waste water standards before they can be discharged into sewers. This part of the sewage may be a burden on fish growth environment, EPA staff conducted a sampling of sewage.

Along five sewage overflow into the lake

◆ Location: south shore of Huang

Along five sewage overflow into the lake

2

Previously, the newspaper reports have mentioned the yellow house south shore of five outfall, Jiao Town government responsible person said that these outfalls in fact it is that the sewage overflow pipe. When the sewage pipes can not carry sewage, the sewage will overflow into the yellow house along the lake, heavy rain, the water level rise would lead to sewage pipes in sewage intrusion into the lake.

Reporters found that this is not only to undertake a sewage pipe through the open area of ​​industrial wastewater enterprise, East China Jiaotong University Institute of Technology and other units of sewage purification treatment have not been discharged directly into the pipeline. Perennial gate coupled pipes, sewage can not flow into the sewage treatment plant, resulting in overflow phenomenon. EPA staff said that this is caused by Huangjiahu a large area of ​​dead fish one of the main.

Number of pig excrement straight into the lake

◆ Location: northern shore of Lake Huang

Number of pig excrement straight into the lake

3

In the yellow house near the northern shore of the revolutionary martyrs cemetery where villagers how the pig, some more than 200 pig breeding pigs, pig excreta and Shaoshui very strong odor, stench incomparable. Reporters saw, almost all pig waste is discharged directly into the through ditches Huang lake, the lake near the village will retain precipitation pig waste. Zhang Xiaodong said that this practice does not meet the national standard, you must carry out rectification.

According to reports, pig manure and other wastes containing substances which if not treated directly into the water, would make eutrophication, algal blooms produce effects, capturing water fish of oxygen. It also contributed to the large number of dead fish, one of the reasons.

Solid waste, contaminated soil water engineering I

◆ Location: Lake Road Huang

Solid waste, contaminated soil water engineering I

4

Lake near Huang Huang Lake Road, the reporter saw a lot of garbage and soil engineering I piled on the lake shore. These are mainly garbage near the village, along a number of community residents and college students randomly discarded, and the works I soil is through the open area at the junction with the new county some construction units stacked.

EPA staff said that when it rains, these garbage and soil engineering I will be into the lake, causing further eutrophication of the lake, causing the lake siltation, encroachment of fish living space. Clean up the garbage as soon as I land and engineering.

[Solution]

New does not flow through the sewage pipes Huangjiahu

Through the open area of ​​municipal staff, said the company, through the open area in the yellow house built south shore sewage pipes, pipeline pumping station into Honggutan through usha sewage treatment plant. "This time, no pumping sewage pumping stations Water usha, the sewage pipes did not break out, can only flow Huangjiahu, we are very worried." According to reports, this year May 3 onwards, usha pump Water sewage station to do, drainage at the two departments have agreed, before pumping, causing sewage overflow phenomenon increases.

To this end, the EPA on the one hand and the Water Authority active consultations. On the other hand, through the open area of ​​municipal companies are also planning to build a new new sewage pipes, reduce the burden on the existing pipeline. According to reports, the new sewage pipeline is expected three kilometers long, will carry through the open area of ​​industrial wastewater enterprise, does not flow through Huangjiahu, but by Honggutan Seirankai pumping directly into the sewage treatment plant, expected to be completed by the end of this pipeline.

Standard enterprise shall not discharge sewage

City environmental monitoring detachment responsible person Xiong said that environmental protection departments will be through the open area of ​​the sewage of industrial enterprises to monitor the situation of non-compliance of enterprises will not discharge effluent; on the shores of Lake Huang East China Jiaotong University Institute of Technology and other units of the sewage situation examination, does not allow direct discharge to Huangjiahu sewage.

Meanwhile, Huang Lake Aquatic field workers and nearby villagers must also raise environmental awareness, coastal pig must be shut down, prohibiting direct emissions further Huangjiahu farm wastes. Nearby villagers and district residents can not be dumped garbage, Jiao Town Economic Development Zone and the nearby construction site to work I clean up the soil.

[Compensation]

Economic Development Zone will be compensated according to the actual situation

Yellow house on Lake Aquatic field compensation, Jiao Town government official said, according to the requirements of Economic Development Zone, the town government and aquaculture farm loss situation and report co-verification, Economic Development Zone will be given according to the actual situation compensation.

Environmental protection departments suggested that aquaculture farm this year, do not put new fish, otherwise there may be a large area of ​​dead fish phenomenon, creating new economic losses. (Commercial Aircraft Niejun Peng Yang Chen量 ...

Veterinary feed factory owner to sell one million fish fish poison people cry boss hiding at 10:19 on May 23, 2013 Source: China News Network to participate in interactive (a) the fish were poisoned in the past two months, almost every time Zhang military system Dead fish are sitting in a daze blocked. TIAN photo BEIJING, May 23, Zhengzhou Electric (Wu Yang Tian Yong) Wang Zhengzhou City Zhongmu County this is a feed mill boss. Not long ago, he has told his old customers Henan Song County a fish farm selling veterinary medical treatment for the fish, the results did not cure fish diseases, poisoned fish farms of more than one million. Allow fish farmers sad is that after the event, feed mill boss hiding.

Zhang is the military system Luoyang City, Henan Song County Spilling side a common fish farmers, raising in the reservoir area has eight fish cages. Zhang and his wife after three years of wind and rain, the eight boxes of fish has come to harvest time. Chang and the military system does not expect is that on March 12, he spent Zhengzhou Animal Husbandry Co., boss Wang Fuyuan farmers dry the fish to sell to his veterinary medical treatment when their eight hundred ten thousand fish cages within three days After all the dead, more than 80 million in direct economic losses.

Zhang told reporters that the military system, not long ago he found himself in the fish cages sick, and on and Zhengzhou Animal Husbandry Co., Ltd., general manager of agricultural Fuyuan Wang dry talk about the matter. At that time, Wang active position, they have a few boxes of drugs can let him use the money to give back. Because Wang has been his dry fish feed suppliers, their relationship has always been good, did not think the military system was accepted Chang Wang dry the fish treatment drugs.

Surprisingly, the military system to the cages sheets sprinkled Wang dry medicine provided shortly cages where the fish began bellies. Three days time, Zhang military system couple raised eight hard years cage fish all died. "It's a few boxes of fish are my wife and all of his possessions, how we live fish dead!" Zhang told reporters cried the military system.

It is understood that, for their own dead fish, but also in order to arouse the attention of concerned, Zhang whole military system heap of dead fish in the reservoir side for two months, but left unattended. Two days ago, Zhang came to the military system Zhongmu County, located in Zhengzhou City, Zhengzhou Animal Husbandry Co. farmers Fuyuan door, would like to use suicide caused by company boss Wang dried attention, Wang has not appeared. Zhongmu relevant department staff to persuade the military system from a couple sheets.

May 22, Zhongmu County Animal Husbandry Bureau under the Zhongmu County animal products quality inspection center director Li Guoshun an interview with reporters, said Zhongmu County Animal Husbandry Bureau about the incident very seriously and launched an immediate investigation. Currently, the preliminary determination, first, Wang dry line feed mill legal representative, does not have the qualifications of veterinary drugs, veterinary drugs sold to farmers king is a serious law violations; Second, Wang dry the sale of veterinary drugs without identification, can be characterized as counterfeit and shoddy goods. Currently Zhongmu County Animal Husbandry Bureau has ordered the company suspend business for rectification, to accept the punishment.

Liguo Shun told reporters, according to Wang dry that they sell veterinary drugs was his love of Connaught Biological Technology Co., Ltd. Zhengzhou When the clerk left behind two boxes medicine. But love Solutia Inc. denied, Wang dry drugs sold their company.

Yesterday morning, the reporter went to Zhengzhou Animal Husbandry Co., trying to find farmers Fuyuan Wang dry understand the situation, the company said a large yard, the king has not here, and now the house is rented out to someone else. Reporters repeatedly phoned Wang dryers, tone is off.

"The idea is to help farmers fight for points more compensation, but to dry phoned Wang, can not get through." Zhongmu County animal products quality inspection center director Li Guoshun told reporters.

8:00 o'clock this morning, reporters in Luoyang City, Henan Song County Los Luan fast road accidents within the territory of a bridge Mariculturists Zhang met the military system is blocking the past couple of cars. When asked why, Zhang said he hopes to help a sky high official stopped to help him solve a problem.

 
http://www.scol.com.cn Sichuan Online (2013-05-23) Source: Mianyang Daily

    "I'm baffled weir pond raised a lot of dead fish, anxious every day I eat well sleep." Recently, the County Town tower Xingfucun scored nine farmers Sun Xingcong newspaper news hotline reflect their own ponds in raising fish began in late April from death, and now amounted to more than 50,000 pounds of dead fish.
To find out, the reporter went to the scene to investigate. Departments have also responded: Investigate cause of fish death, and develop solutions.

1. Farmers reflect
Fish ponds, have died
"Ponds where the fish raised died so suddenly, I do not know how to do it." 70-year-old Sun Xingcong anxiously told reporters that he put all the hard work and savings were being spent on the fish, and this year bought 180 t feed, a total of 28,000 yuan, not to feed money to the boss, also borrowed 7,500 yuan to buy fish, because the fish was sick last month, also bought a 7000 yuan of money medicine.
Monkey memories, April 15, he bought the village from the star added 55 hours of water, from the day around 5:30 drainage, halfway stopped four hours, probably after two days and nights, you have been discovered fish deaths. "We kept a few decades fish ponds Which never seen such a serious phenomenon of dead fish, when the old woman saw so many dead fish, fainting directly passed." Monkey says with exasperation.
Monkey House ponds in the bighead carp, silver carp, grass carp most deaths, only carp die less. In order to rescue the depleted fish, Monkey and family will salvage large ponds to fish small ponds with their own well water, unfortunately, these fish are also spared. According to his estimates, the current 30 acres of dead fish from the ponds salvage 50,000 kilos a loss of $ 30 million. Seeing more and more dead fish does not emit odors when the child, Monkey anxious four help, but had to find someone to salvage the dead after burial.

2. Reporter survey
Stench is compelling, the cause of death a mystery
19 at noon, reporters rushed to the tower Township Monkey House Xingfucun nine dead fish ponds edge and found dead fish on the water has been salvaged clean, also stood around a few did not deal with the dead fish, each fish about 5,6 kilograms. The hot weather, flies crawling on the dead fish have begun to rot, emitting a pungent fishy taste. "I'm very focused on fish quality fish to pollution-free water fish favored to win the market, particularly in the feed picky on matching, mainly wheat, forage-based, so I believe I have absolutely no problem to feed." For the dead fish reasons, Monkey analysis, specifically from the pond water is pumped over Murakami a river, never before have worked out, but the strange thing is, why turn on the water from the beginning of April, the fish began to die, Monkey suspect Water may be contaminated, resulting in dead fish.

3 departments
Solutions are being developed
What causes a large number of fish deaths? 20, the reporter a telephone interview with the County Environmental Protection Bureau. Bureau monitoring unit responsible person, they received a report, immediately went to the scene investigation. Investigation in the field, respectively, in the Monkey House ponds intakes, water supply stations and water stations upstream farming field trips river water samples taken on three different locations for testing water quality comparison. According to the analysis report water quality testing, the preliminary determination is located upstream of the water supply station duck farm stocking problems that may be a duck swimming in the river or defecation, have a definite impact on river water quality, resulting in downstream fish ponds because water pollution or lack of oxygen and death. As for specific reasons, is still under investigation.
County Water Fisheries Station responsible person also said they are and the water tower town government, County Environmental Protection Bureau and other relevant departments to negotiate, according to the survey results to develop specific solutions to minimize the loss of fish farmers. (With Yongjun Huang Xiaoqin Han Yi West)
Editor: Jing City [Close Window]

Nanchang Yellow Lake, a large area of dead fish the aquatic field down the drain (Figure)

May 2013 22:29 Dajiang I want to participate in (35)

 

Original title: Nanchang Yellow Lake, a large area of dead fish the aquatic field down the drain Figure



Fisheries field staff are to salvage dead fish.



Dajiang News reporter Yu Yunliang: 19, users in Jiangxi microblogging broke the news that the suburbs of Nanchang Yellow Lake, a large area of dead fish. The Dajiang reporters went to verify the true aquatic products market official said sewage inflow may cause the fish to die. The occurrence of such a large area of dead fish, aquatic field down the drain.



19 afternoon, Dajiang reporter came to the incident. Dead fish in the waters of an aquaculture farm. The the aquatic field official told reporters, on the 16th afternoon, fish pond fish bubbling, followed by oxygen, but to no avail. 17 fish a massive die 19, the entire aquatic field foul.



Aquatic field boss, fish ponds million yuan investment in the construction of the Chinese New Year this year was placed in a 50 million fry, "I did not expect die off, down the drain!" The aquatic field that is heavy rains caused sewage flows Lake in the ultimate cause pending further investigation.

Guangdong Zhuhai Doumen Baijiao town two hundred acres of fish ponds in the last six months strange dead fish
May 16, 2013 aquaculture Source: Southern Rural News Views: 2540 I want to comment

Voted dead, cast or dead ...... environmental factors, disease or was poisoned?

Doumen Baijiao more than 10 families of fish ponds last six months strange dead fish

□ / Southern Rural News reporter Liu Bin

20 years of "keep fish, never appeared so strange!" May 9, irrepressible the perplexities and anxious, Chen Huapei front of reporters s feelings.

The Chen Huapei Baijiao town lights Doumen District neighborhood East Wai residents group of residents in Zhuhai City, Guangdong Province. Over the past six months, his group about 10 months to farmers, about 200 acres of ponds, unexplained acute dead fish (shrimp) problems. Farmers have to resort to fishing pharmacies, feed companies, as well as fisheries authorities and public security departments, but as of press time reporter, the cause of the dead fish is still unknown. The farmers now clear pond, not to develop the next breeding program.

Strange ◥

The common coup invalid, the pond next door unharmed

"Up in the morning to find the entire pond fish all died!" The morning of April 17, Wu Weidong, as usual fish ponds Xuntang the, I did not expect this problem. A total of 5 acres of dead fish mouth Tong intensive sunfish. This is a dead fish in the local.

The the East Second Circuit third resident team leader Zhou Wenwang told the Southern Rural News reporter since September and October last year, the team will continue to dead fish, almost all of the sudden death, the whole pond usually in 3-4 die within hours.

Fishing Baijiao Zhenmou, pharmacy clerk Wenming (a pseudonym) several times in the evening farmers received the calls. According to the problems reflected by the farmers, he suggested that with the anti-stress, detoxification and oxygen drugs. As a rule of thumb, the dead fish in the past, the use of these drugs can serve to improve fish health, palliative role. "The strange thing is, not completely alleviate this medication," said Zhang Wenming see farmers can not control, only to collect fish in the fish immediately.

Many respondents farmers said that in the past, dead fish generally appear in one or two varieties of the above, but this time have emerged in many varieties. The Zhou Wenwang, barramundi, sea bass, red snapper, and P. vannamei die more, bamboo shell fish, sunfish and other species also have. 487 acres of fish ponds in their group has about 200 acres of fish ponds have this problem.

It is curious that there is, in the pond next to some of the issues, any creek or construction interval, but there are a good few mouthfuls Tong never appeared dead fish problem. May 9, the reporter still at the scene to see these never had problems ponds are open aerator.

Zhang Wenming, some farmers initially thought their management problems, death problems, clear pond, disinfection, even with high-pressure water wash pond, the re-Fangmiao or problems. Village a farmers after another six months to six fish ponds were all dead, or dead fish (shrimp) with high-pressure water wash pond, re-Fangmiao. Moreover, because of concerns specific species before the problem, the farmers also try to replace the varieties, for example, the last problem is the sea bass, this time put the P. vannamei, but the same can not be spared.

Cause of death of a ◥>

Virus or pan-bottom "to death?

Zhang Wenming has been a concern of the group of dead fish. In September last year, after the death of a farmers barramundi, he dissected a fish and from found Iridovirus. He told reporters in September last year, Baijiao town the outbreak Iridovirus, led to the death of many fish. However, deaths caused by the iridescent virus usually last 2-3 days and let the fish all died, will not happen overnight. To this end, it is difficult to determine the dead fish is caused by the iridescent virus. "

A feed enterprises in the Pearl River Delta the Doumen market salesman Li Wei (a pseudonym) told = reporters, not research being done for this problem, also very confused, but guess based on their experience may be a virus problem.

Also industry speculation with the pan bottom, hypoxia. Doumen District of Ocean and Fishery Bureau, deputy director of Zhu Jian Hong, there is such a speculation. However, because farmers did not notify the competent authorities in the onset of the first time, we did not get to a more appropriate water samples, it is difficult to make a conclusion. "

Zhang Wenming guess. He told the Southern Rural News reporter, in November and December last year, this group of farmers is relatively concentrated dead fish, and large-sized fish to be listed. That time for 1 month rainy weather, the fish is very easy to "pan bottom. Baijiao town has a lot of farmers "Pan bottom". Because "Pan the bottom" dead fish are generally very acute, all die in just a few hours, and big fish, Zhang Wenming that these farmers dead fish there may be a "pan-bottom". But he could not understand the other villages in the bottom of the pan-lethal generally scattered, unlike this village is so concentrated, contiguous.

Zhu Jian Hong recommendations later also appeared dead fish, the best farmers in the event of a problem the occasion to inform them, they can be sent to the sampling Zhuhai Entry-Exit Inspection and Quarantine Laboratory.

At present, the surveyed farmers generally not water quality problems, mismanagement, and water contamination problems led to dead fish, but is also concerned that there is a problem with the soil, or biogas generated in the breeding process. Zhang Wenming that both cases are unlikely, if the soil changes will be reflected in the water above its usual monitoring the situation, the farmers of water in front of the dead fish and no obvious problems to farmers. The main component of biogas is methane, even if there is methane, that does not lead to the death of the fish.

Cause of death of two ◥>

Some poisoning?

From farming techniques can not analyze the reasons, many farmers began to suspect that someone is not poisoning. The number of farmers said that they found dead fish smell more concentrated smell of pesticides. Which also contributed to the analysis of human issues. Because of this, when the dead fish persists, farmers began to report to Baijiao town police station. Wu Weidong April 20 Daily matter.

Doumen District Public Security Bureau command center Chen, director of Baijiao town police station in the investigation of the site visits found no suspicious signs, the branch of criminal technology sector has Baijiao samples submitted poisoning tests, some cases of 'complete testing, did not check The sample of the suspicious ingredients, some of the cases are still detected.

Farmers "smell more concentrated smell of pesticides", Chan Wing, with conventional or does not match, because a lot of pesticides irritation is not strong, people can not smell. Even more pungent pesticide in fish ponds reached the point where people smell more concentrated flavor, put the amount of pesticides must be very large, sustained human poisoning so long somewhat difficult to understand.

Although suspected for a reason, a number of aquaculture farmers also said it is hard to think of who will do so. According to the villagers, the village interpersonal relationships with the surrounding villages are better, should not be caused by the village disputes. Local industry sources, if someone last six months poisoning, it is difficult not to be farmers found that the poisoning theory seems a bit difficult to set up.

Translated from Chinese

State river emergent large carp deaths remove 25 tons of dead fish on 05 May 2013 at 20:55

Source: China News Network

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4 people to participate in the main comment 0 2 0 comments Original title: De Tulin, Michigan carp died mysteriously remove 25 tons of dead fish



China news agency, Berlin, May 5 - From mid-April, Thuringia, Germany the River 塔尔斯柏勒 (Talsperre) sudden death of a large number of carp, laboratory tests have not yet found the cause of death. Local organizations staff have been recovered 25 tons of dead fish.



Local government spokesman, said the media had some dead fish sent to the laboratory test and found no dead fish and lethal viruses or contamination exists, the experts also found the area ecosystem problems, other fish in the same waters also does not appear the phenomenon of death. The relevant agencies will be the transfer of the river further examination.



So far, the death of carp in the region seems to have not terminated, the surface of the water every day to add a large number of dead fish, resulting in serious near the air smell. River surrounding areas of the 塔尔斯柏勒 the beautiful and famous annual start from spring to attract tourists to the. Local government is worried about the current situation will affect the local tourism industry.



River 塔尔斯柏勒 carp are not native. In the 1980s, a local laboratory for medical research, has invested more than carp to the river, after a serum from these carp who successfully extracted. Be able to determine the basic old carp dead fish.



The past few decades, called the "San Mao golden algae" (Prymnesium parvum)'s, algae, had resulted in a large number of fish kills in the world. The event first appeared in Israel. Between 1969-1975, this algae invasion of British rivers, spread Norwegian waters in 1989, resulting in a large number of salmon and trout death. However, this algae is not the cause of the cause of death of Thuringia carp. (End)



[Editor: PN037] Tags: Thuringia tons of dead fish

Two studies were conducted to investigate the effects of dietary supplementation of three Bacillus spp. on growth performance, innate immunity and disease resistance of olive flounder against Streptococcus iniae and to examine the efficacy of Bacillus spp. on water quality reducing ammonia concentration and increasing fish survival. In the first experiment, a basal diet was prepared and regarded as a control and three other diets were prepared by supplementing one of three Bacillus spp. (B. subtilis, B. pumilus or B. licheniformis) at the dietary level of 0.5%. Triplicate groups of fish (initial body weight, 25g) were fed one of the four diets for eight weeks. Fish fed with B. subtilis containing diet showed significantly higher growth performance and feed efficiency than fish fed with the control diet. Also, significantly higher survival rates were observed in fish fed B. subtilis or B. pumilus containing diets during the feeding trial. Phagocytic activity was significantly increased in fish fed the probiotic containing diets and higher superoxide dismutase activity was observed in fish fed B. pumilus or B. licheniformis when compared to the control. However, serum lysozyme and myeloperoxidase activities did not significantly differ compared to the control. After a challenge with S. iniae, fish fed B. subtilis or B. licheniformis showed significantly higher survival rates compared to fish fed the control diet. In the second experiment, fish (30.1g) were fed a commercial diet for three weeks and then they were distributed to nine tanks at a density of 30 fish per tank (3 replicates per treatment). Fish were fasted for 5days in static water system, while one of two probiotics, B. subtilis or B. licheniformis was treated every 24h into the rearing water at the concentration of 10⁴ CFUml⁻¹. During the trial, significantly decreased ammonia concentration and fish mortality were observed by the supplementation of B. subtilis into the rearing water. The results in these studies indicate that B. subtilis has beneficial effects on growth performance, innate immunity and disease resistance of olive flounder and quality of the rearing water.

Author(s): Ji-Hoon Cha , Samad Rahimnejad , Si-Yong Yang , Kang-Woong Kim , Kyeong-Jun Lee

今天早晨，福建政和县星溪乡梅坡村的鱼塘承包户小杨像往常一样去巡视鱼塘，却发现，鱼塘上到处漂浮着死鱼，这让小杨十分心痛。 【正文】 上午九点，记者赶到现场，看到鱼塘的堤坝上摆放着大量死去的草鱼、鲫鱼，水面上还有 ...

Fujian Zhenghe County Star Township fish ponds in a large number of dead fish in doubt due to lack of oxygen caused by
Aquaculture April 20, 2013 Source: Fujian Views: 1491 I want to comment

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See teenagers have to face the harsh reality of amputation is really sad, hope he strong enough to face, but also hope that this unfortunate not to happen again. Well, look at the next one. This morning, as usual Fujian Zhenghe County Star Township pond contracting farmers Xiao Yang Mei Bo Village tour of fish ponds, but found the fish pond full of floating dead fish, Xiao Yang is very sad.

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Nine o'clock, the reporter rushed to the scene to see the fish ponds dams stocked with a large number of dead grass carp, crucian carp, the water there are many fish floating belly up, workers are salvaged. Pond contractor Xiao Yang said that this piece of fish ponds in an area of 50 acres, began in March last year, contracting, seeing the fish in the fish ponds can immediately sold, according to the current market price estimates, the less able to sell more than ten million, I did not expect overnight all wasted. The night before, fish ponds where the fish is still alive and well, early in the morning, but a large number of deaths, and all the dead fish weighing a pound more, part of the fish is not affected. Feeding feed, or someone deliberately poisoning? Xiao Yang, the first time reported the matter, governance and agriculture, public security, law enforcement officers immediately rushed to the scene, to expand exploration and sampling of fish pond water and feed the fish ponds surrounding environment. The sources said that through the observation of external symptoms and internal organs of dead fish, do not rule out the possibility of hypoxia lethal. Because before the evening before the rainfall is very hot, if not timely filled with water to the reservoir and open the aerator, it is likely to cause death of fish hypoxia.
(Tong Qisheng: farmers Xiao Yang: In accordance with the old fish, may be hypoxia (results) have to wait before we know down the identification of these days.)

Currently, governance and agriculture, public security, industry and commerce departments have been involved in investigating the matter.