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The Amphibian Survival Alliance will bring together existing projects and organisations, improving co-ordination, scientific research and fund-raising.

About a third of amphibian species are threatened with extinctions.

A two-day summit held last week in London identified the two main threats as destruction of habitat and the fungal disease(真菌病) chytridiomycosis.

"The world's amphibians(两栖类) are facing an uphill battle(艰难的斗争) for survival," said James Collins, co-chair of the Amphibian Specialist Group (ASG) co-ordinated by the International Union for the Conservation of Nature (IUCN).

"By far the worst threats are infectious disease and habitat destruction, so the Alliance will focus on these issues first."

Last week's meeting, held at the Zoological Society of London (ZSL), declared that research into possible treatments for the chytrid(壶菌) fungus should be a top priority.

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Identified only a decade ago, the fungus now infects amphibians in the Americas, Australia, Europe, Asia and Africa.

How it originated and how it kills are matters of ongoing research.

But in practical terms, finding something that can stop it in open country rather than the laboratory is the big challenge.

Researchers have found that some amphibian species carry chemicals on their skin that provide a natural defence.

The idea is to see whether these chemicals can be turned into something that can attack the fungus in the wild, providing a defence for species that currently have none.

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The new Amphibian Survival Alliance (ASA) sees this line of research as an urgent priority.

More difficult to tackle(处理,抓住) will be the ongoing destruction of habitat that is a concern in most continents, but especially in parts of Asia that are seeing rapid expansion of cities, industry and infrastructure.

"If we want to stop the amphibian extinction crisis, we have to protect the areas where amphibians are threatened by habitat destruction," said Claude Gascon, the Amphibian Specialist Group's other co-chair.

"One of the reasons amphibians are in such dire(可怕的,悲惨的) straits(困难,窘境) is because many species are only found in single sites and are therefore much more susceptible to(对……敏感的) habitat loss."

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As a group, amphibians are considerably more threatened than birds, mammals, fish or reptiles(爬行动物).

Apart from habitat loss and chytrid, issues of concern are:

unsustainable hunting for food, medicine and the pet trade

chemical pollution

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climatic change

introduced species

other infectious diseases

The formation of the ASA was proposed in 2006 but adequate financial and institutional backing did not materialise.

At that stage scientists were divided over how money and resources should be split between conservation in the wild and captive breeding.

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Now there is general agreement that both strategies are necessary.

Initial backing emerged at the ZSL meeting in the form of a $200,000 pledge that will fund the ASA co-ordinator's post for two years.

 
I was always a little in awe of Great-aunt Stephina Roos. Indeed, as children we were all frankly terrified of her. The fact that she did not live with the family, preferring her tiny cottage and solitude to the comfortable but rather noisy household where we were brought up-added to the respectful fear in which she was held.

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  We used to take it in turn to carry small delicacies which my mother had made down from the big house to the little cottage where Aunt Stephia and an old colored maid spent their days. Old Tnate Sanna would open the door to the rather frightened little messenger and would usher him-or her - into the dark voor-kamer, where the shutters were always closed to keep out the heat

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  She was a tiny little woman to inspire so much veneration. She was always dressed in black, and her dark clothes melted into the shadows of the voor-kamer and made her look smaller than ever. But you felt. The moment she entered. That something vital and strong and somehow indestructible had come in with her, although she moved slowly, and her voice was sweet and soft.

 

  She never embraced us. She would greet us and take out hot little hands in her own beautiful cool one, with blue veins standing out on the back of it, as though the white skin were almost too delicate to contain them.

  

  Tante Sanna would bring in dishes of sweet, sweet, sticky candy, or a great bowl of grapes or peaches, and Great-aunt Stephina would converse gravely about happenings on the farm ,and, more rarely, of the outer world.

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  When we had finished our sweetmeats or fruit she would accompany us to the stoep, bidding us thank our mother for her gift and sending quaint, old-fashioned messages to her and the Father. Then she would turn and enter the house, closing the door behind, so that it became once more a place of mystery.

  

  As I grew older I found, rather to my surprise, that I had become genuinely fond of my aloof old great-aunt. But to this day I do not know what strange impulse made me take George to see her and to tell her, before I had confided in another living soul, of our engagement. To my astonishment, she was delighted.

     

  "An Englishman,"she exclaimed."But that is splendid, splendid. And you,"she turned to George,"you are making your home in this country? You do not intend to return to England just yet?"

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  She seemed relieved when she heard that George had bought a farm near our own farm and intended to settle in South Africa. She became quite animated, and chattered away to him.

 

  After that I would often slip away to the little cottage by the mealie lands. Once she was somewhat disappointed on hearing that we had decided to wait for two years before getting married, but when she learned that my father and mother were both pleased with the match she seemed reassured.

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  Still, she often appeared anxious about my love affair, and would ask questions that seemed to me strange, almost as though she feared that something would happen to destroy my romance. But I was quite unprepared for her outburst when I mentioned that George thought of paying a lightning visit to England

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before we were married."He must not do it,"she cried."Ina, you must not

world of warcraft power leveling,let him go. Promise me you will prevent him."she was trembling all over. I did what I could to console her, but she looked so tired and pale that I persuaded her to go to her room and rest, promising to return the next day.

 
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