大型鱼类的藏身之处
文章来源:未知 文章作者:enread 发布时间:2012-02-14 04:53 字体: [ ]  进入论坛
(单词翻译:双击或拖选)

When it comes to choosing a place to hang out(闲逛) , big reef fish like coral trout1(鲑鱼) , snappers and sweetlips have strong architectural preferences. The choices big fish make on where to shelter could have a major influence on their ability to cope with climate change, say scientists from the ARC Centre of Excellence2 for Coral Reef Studies at James Cook University.

In research aimed at understanding the process of fish population decline when coral reefs sustain major damage, PhD student James Kerry and Professor David Bellwood have found that big fish show a marked preference for sheltering under large, flat table corals, as opposed to branching corals or massive corals (known as bommies).

In a study that covered 17 separate locations round Lizard3 Island in far North Queensland, the researchers videoed the behaviour of large reef fish, allowing them to identify the kind of habitat they most preferred and depended on.

"Like human beings, fish have strong preferences on where they like to hang out -- and it appears that they much prefer to shelter under overhanging tablecorals. This tells us quite a bit about how important these corals are to the overall structure of the reef and the large reef fish that live there," says James. "The reason for the fishes' preference is not yet clear -- but possibilities include hiding from predators4 such as sharks, shading themselves from ultraviolet sunlight, or lying in ambush5(埋伏) for prey6.

"The importance of this finding is that table corals are among the types most vulnerable to climate change," Prof. Bellwood explains. "In shallow waters and on the tops of reefs, they are often the main source of cover for these big fish.

"If they die back as a result of bleaching7 or disease, or are destroyed by storm surges, this would strip the reef of one of its main attractions, from a coral trout's viewpoint."

The researchers also proved that it isn't the coral, so much as the shelter that is important to big fish, by deploying8 artificial shelters made from plastic in the lagoon9.

"We made one sort with no roof, one with a translucent10(透明的) roof and one with a roof painted black. Far and away the fish preferred to shelter under the black roof, which suggests they either want to hide or else to avoid direct sunlight," James says.

While the team is planning further experiments to clarify the reasons for the fishes' shelter preferences, their early findings may provide a useful insight to reef managers, about the importance of trying to maintain a range of structures and shelters as climate change bears down on the Great Barrier Reef, including the highly susceptible11 tabular(扁平的) corals.



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1 trout PKDzs     
n.鳟鱼;鲑鱼(属)
参考例句:
  • Thousands of young salmon and trout have been killed by the pollution.成千上万的鲑鱼和鳟鱼的鱼苗因污染而死亡。
  • We hooked a trout and had it for breakfast.我们钓了一条鳟鱼,早饭时吃了。
2 excellence ZnhxM     
n.优秀,杰出,(pl.)优点,美德
参考例句:
  • His art has reached a high degree of excellence.他的艺术已达到炉火纯青的地步。
  • My performance is far below excellence.我的表演离优秀还差得远呢。
3 lizard P0Ex0     
n.蜥蜴,壁虎
参考例句:
  • A chameleon is a kind of lizard.变色龙是一种蜥蜴。
  • The lizard darted out its tongue at the insect.蜥蜴伸出舌头去吃小昆虫。
4 predators 48b965855934a5395e409c1112d94f63     
n.食肉动物( predator的名词复数 );奴役他人者(尤指在财务或性关系方面)
参考例句:
  • birds and their earthbound predators 鸟和地面上捕食它们的动物
  • The eyes of predators are highly sensitive to the slightest movement. 捕食性动物的眼睛能感觉到最细小的动静。 来自《简明英汉词典》
5 ambush DNPzg     
n.埋伏(地点);伏兵;v.埋伏;伏击
参考例句:
  • Our soldiers lay in ambush in the jungle for the enemy.我方战士埋伏在丛林中等待敌人。
  • Four men led by a sergeant lay in ambush at the crossroads.由一名中士率领的四名士兵埋伏在十字路口。
6 prey g1czH     
n.被掠食者,牺牲者,掠食;v.捕食,掠夺,折磨
参考例句:
  • Stronger animals prey on weaker ones.弱肉强食。
  • The lion was hunting for its prey.狮子在寻找猎物。
7 bleaching c8f59fe090b4d03ec300145821501bd3     
漂白法,漂白
参考例句:
  • Moderately weathered rock showed more intense bleaching and fissuring in the feldspars. 中等风化岩石则是指长石有更为强烈的变白现象和裂纹现象。
  • Bleaching effects are very strong and show on air photos. 退色效应非常强烈,并且反映在航空象片上。
8 deploying 79c9e662a7f3c3d49ecc43f559de9424     
(尤指军事行动)使展开( deploy的现在分词 ); 施展; 部署; 有效地利用
参考例句:
  • Provides support for developing and deploying distributed, component-based applications. 为开发和部署基于组件的分布式应用程序提供支持。
  • Advertisement, publishing, repair, and install-on-demand are all available when deploying your application. 在部署应用程序时提供公布、发布、修复和即需即装功能。
9 lagoon b3Uyb     
n.泻湖,咸水湖
参考例句:
  • The lagoon was pullulated with tropical fish.那个咸水湖聚满了热带鱼。
  • This area isolates a restricted lagoon environment.将这一地区隔离起来使形成一个封闭的泻湖环境。
10 translucent yniwY     
adj.半透明的;透明的
参考例句:
  • The building is roofed entirely with translucent corrugated plastic.这座建筑完全用半透明瓦楞塑料封顶。
  • A small difference between them will render the composite translucent.微小的差别,也会使复合材料变成半透明。
11 susceptible 4rrw7     
adj.过敏的,敏感的;易动感情的,易受感动的
参考例句:
  • Children are more susceptible than adults.孩子比成人易受感动。
  • We are all susceptible to advertising.我们都易受广告的影响。
TAG标签: place fish reef
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