真菌感染龟卵导致大西洋海龟数量减少-凯发k8官网

真菌感染龟卵导致大西洋海龟数量减少
文章来源:未知 文章作者:meng 发布时间:2010-10-31 03:26 字体: [ ] 
(单词翻译:双击或拖选)

an international team of mycologists(霉菌学家) and ecologists(生态学家) studying atlantic sea turtles at 1 verde have discovered that the species is under threat from a fungal infection which targets eggs. the research, published in fems microbiology letters , reveals how the 2 fusarium solani(腐皮镰刀菌) may have played a key role in the 30-year decline in turtle numbers. "in the past 30 years we have witnessed an 3 decline in the number of nesting beaches of sea turtles worldwide," said drs. javier diéguez-uribeondo and adolfo marco from consejo superior de investigaciones cientificas- csic spain. "while many of the reasons for this are related to the human impact of the costal environment it has been suspected that the decline is also due to pathogenic(致病的,病原的) microorganisms."

fusarium solani is a complex fungal strain which represents over 45 phylogenetic and biological species. the fungus is distributed through soil and can cause serious plant diseases. the fungus is known to have infected at least 111 plant species spanning 87 genera(属,种) and has also been shown to cause disease in other animals with immunodeficiency(免疫缺陷) .

during 4 development turtle eggs spend long periods covered by sand under conditions of high humidity and warm temperatures, which are known to favor the growth of soil-born 5.

dr diéguez-uribeondo's team focused their study on the loggerhead(红海龟,笨蛋) sea turtle (caretta caretta) population on boavista island, cape verde, off the west african coast. while boavista island represents one of the most important nesting regions for this species a high hatching failure rate is driving population numbers down.

the team sampled egg shells with early and severe symptoms of infection, as well as diseased 6 from sea turtle nests located in ervatao, joao barrosa and curral velho beaches and discovered 25 7 of f. solani associated with egg mass mortalities.

although this fungal species has been 8 described in association with different infections in animals, its relationship to hatching failure had not been investigated before this study.

the finding that strains of f. solani may act as a primary pathogen in loggerhead sea turtles represents an extremely high risk to the conservation of loggerhead sea turtles across the area.

however, the description of these particular fungal strains causing this infection may help in developing conservation programs based on artificial incubation(孵化,潜伏) and may aid the development of preventative methods in the field to reduce or totally 9 the presence of f. solani in turtle nests.

"this work reveals that a strain of f. solani is responsible for the symptoms observed on turtle nesting beaches," concluded dr diéguez-uribeondo. "this shows that the infection represents a serious risk for the survival of this endangered species, while also showing immunologists(免疫学者) and conservationists where to focus their research."



点击收听单词发音收听单词发音  

1 itey6     
n.海角,岬;披肩,短披风
参考例句:
  • i long for a trip to the cape of good hope.我渴望到好望角去旅行。
  • she was wearing a cape over her dress.她在外套上披着一件披肩。
2 gzryi     
n.真菌,真菌类植物
参考例句:
  • mushrooms are a type of fungus.蘑菇是一种真菌。
  • this fungus can just be detected by the unaided eye.这种真菌只用肉眼就能检查出。
3 2fdyh     
adj.突然的,意外的;唐突的,鲁莽的
参考例句:
  • the river takes an abrupt bend to the west.这河突然向西转弯。
  • his abrupt reply hurt our feelings.他粗鲁的回答伤了我们的感情。
4 58eyk     
adj.胚胎的
参考例句:
  • it is still in an embryonic stage.它还处于萌芽阶段。
  • the plan,as yet,only exists in embryonic form.这个计划迄今为止还只是在酝酿之中。
5 6hrx6     
n.真菌,霉菌
参考例句:
  • students practice to apply the study of genetics to multicellular plants and fungi.学生们练习把基因学应用到多细胞植物和真菌中。
  • the lawn was covered with fungi.草地上到处都是蘑菇。
6 0e62a67414ef42288b74539e591aa30a     
n.晶胚;胚,胚胎( embryo的名词复数 )
参考例句:
  • somatic cells of angiosperms enter a regenerative phase and behave like embryos. 被子植物体细胞进入一个生殖阶段,而且其行为象胚。 来自辞典例句
  • evolution can explain why human embryos look like gilled fishes. 进化论能够解释为什么人类的胚胎看起来象除去了内脏的鱼一样。 来自辞典例句
7 338356f90b44ba66febab4a4c173b0f7     
v.使隔离( isolate的第三人称单数 );将…剔出(以便看清和单独处理);使(某物质、细胞等)分离;使离析
参考例句:
  • the transformer isolates the transistors with regard to d-c bias voltage. 变压器可在两个晶体管之间隔离直流偏压。 来自辞典例句
  • in regions with certain isolates of trv, spraining is more prominent. 在具有trv某些分离物的地区,坏死是比较显著的。 来自辞典例句
8 bkzzzc     
adv.以前,先前(地)
参考例句:
  • the bicycle tyre blew out at a previously damaged point.自行车胎在以前损坏过的地方又爆开了。
  • let me digress for a moment and explain what had happened previously.让我岔开一会儿,解释原先发生了什么。
9 womxn     
v.擦掉;消除某事物的痕迹
参考例句:
  • he tried to erase the idea from his mind.他试图从头脑中抹掉这个想法。
  • please erase my name from the list.请把我的名字从名单上擦去。
上一篇: 下一篇:
tag标签: eggs research infection
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:点击我更换图片
最新评论
网站地图