Winter outdoor violent, Australian frog "collective mysterious death" scientist: also happened last year, the reason is unknown

According to reports, the current "mysterious deaths" of frogs appearing in Australia, which are currently in the winter, continued the trend of last winter. According to local scientists, as many as 1,1600 residents reported that they were sick or died last year, and many of them reported that dozens of frogs were found "collective death", and the location ranged from its own garden, sidewalk to highway.

It is reported that there are 247 species of frogs in Australia, 40 of which are endangered. As of now, a series of frog deaths have affected more than 40 land species, and local scientists are trying to solve the "mystery of death" in the winter.

Winter appears in empty outdoor, the Australian frog "collective death"

"The homeowners said that this was never seen before, but now their houses are dozens of dead frogs everywhere." The amphibious biologist of the Australian museum Judy Rolly said that she suddenly suddenly in May last year. The news of the texts on social media on witnessing the "dead frog" surged. Generally speaking, frogs are accustomed to hiding in the cave when they are cold, but last winter was abnormally found "collective death" in an open outdoor, especially in the central part of the North Coast.

▲ Graphic messages on social media about witnessing "Dead Frog" surge

At first, Rollem's immune system that blamed it on amphibians slowed down in winter. However, with more similar reports, she was worried that large -scale deaths could cause serious consequences to the entire frog species. Last winter, as many as 1,600 people in Australia reported that frogs died or were dying, and the number of dead frogs mentioned in most reports was "dozens". About thousands of death frogs involve more than 40 Australian frog species, including some endangered species.

According to reports, there are 247 local frogs known in Australia, at least 4 types of extinction, and another 40 types of endangering. From the rain forest and desert to the Australian Alps, the ubiquitous frog is an important part of the local health ecosystem. Kelly Rose, the head of the Australian Wildlife Health Registration Office of the Australian Wildlife Health Registration Office, said: "Their number is really large. Once the change occurs, the entire food network will be affected."

▲ A green tree frog "humpback" sitting on the asphalt road to bask in the sun, and died in just a few hours.

As the weather warms, the report of frogs' illness or death has decreased in summer, and it is almost zero as of the end of last year. Unfortunately, Riley found similar phenomena in the past few weeks. Some reports show that a green tree frog "humpback" was sitting on the asphalt road to bask in the sun, and died in just a few hours. When some dead frogs were discovered, the shell has changed color or even dry. Lori warned: "Although I hope the situation this year will not be as bad as last year, we are worried that this happens again."

Death factors may be fungal infection, environmental changes, etc.

In order to study the cause of the frog's illness and death, Lori and her colleagues were collected in the wild frog samples and tested hundreds of frozen frog samples. According to the study, the "primary suspect" of the Relie team believes that the "primary suspect" of the frog death incident is Batrachochytrium Dendrobatidis. Since the 1970s, such fungi has caused a large number of amphibious animals to be ill and died, which is considered to be the "culprit" that caused 90 species to extinct.

A study in 2019 found that the frog pot potter with the outer layer of frog corner protein still threatened the survival of more than 500 amphibians. The frogs breathe, drink water, and supplement electrolytes. In the low temperature period, it is particularly easy to suffer from this "frog killer" attack. After testing hundreds of dead frogs, about 75%infected the frog pot bacteria after testing hundreds of dead frogs. However, the Relie team has not determined whether this fungus can explain all deaths.

"Since the mid -1980s, there have been sufficient evidence that the frog pot bacteria exist widespread. So, why do we see such a high (frog) mortality rate now?" Luoli said that the anatomy of some frogs showed its nerves. Both the system and the heart have internal lesions, and this is not a common symptom of fungal infection. "We are exploring all kinds of potential pathogens and various diseases. This is like trying to crack together the" murder "."

▲ The team of Judy Rolly has incorporated environmental changes into the "suspect object"

However, scientists are still unable to conclude that Lori's team has now incorporated environmental changes into the "suspect". One speculation is that the rainy weather in eastern Australia has changed in the past two years of fungi and frogs. The other may be the influence of frogs due to secondary diseases, parasites, and environmental toxins, or the survival pressure brought by continuous drought, fire and floods. Such negative pressure sources can cause biological individuals to respond to stress reactions. Essence

Red Star News reporter Hu Yiling

Edit Guo Yu

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