古代昆虫的伪装技巧
文章来源:未知 文章作者:enread 发布时间:2016-06-27 08:25 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
Insects have evolved diverse types of camouflage1 that have played an important role in their evolutionary2 success. Debris3-carrying, a behavior of actively4 harvesting and carrying exogenous materials, is among the most fascinating and complex behaviors because it requires not only an ability to recognize, collect, and carry materials, but also evolutionary adaptations in related morphological characteristics. The fossil record, however, of such behavior is extremely scarce, and only a single Mesozoic example from Spanish amber5 had been recorded previously6; therefore, little is known about the early evolution of this complicated behavior and its underlying7 anatomy8.
 
Dr. WANG Bo from the Nanjing Institute of Geology and Palaeontology of the Chinese Academy of Sciences and his colleagues have now reported a diverse insect assemblage of exceptionally preserved debris carriers from Cretaceous Burmese, French, and Lebanese ambers, including the earliest known chrysopoid larvae9 (green lacewings), myrmeleontoid larvae (split-footed lacewings and owlflies), and reduviids (assassin bugs). The study was published on Science Advances, Friday, 24 June 2016.
 
These ancient insects used a variety of debris material, including insect exoskeletons, sand grains, soil dust, leaf trichomes of gleicheniacean ferns, wood fibers10, and other vegetal debris. They convergently evolved their debris-carrying behavior through multiple pathways, which expressed a high degree of evolutionary plasticity.
 
These fossils are the oldest direct evidence of camouflage behavior utilizing11 trash in the fossil record and show unequivocal evidence of camouflage in immature12 lacewings and reduviids dating back more than 100 million years. They demonstrate that the behavioral repertoire13, which is associated with considerable morphological adaptations, was already widespread among insects by at least the Mid-Cretaceous. These findings provide a novel insight into the early evolution of camouflage in insects and ancient ecological14 associations among plants and insects.
 
Most of the Burmese amber lacewing larvae were preserved with dendritic trichomes produced by gleicheniacean ferns, and two chrysopoid larvae were carrying these trichomes, suggesting that these fossil lacewing larvae were closely associated with the habitats of gleicheniacean ferns.


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1 camouflage NsnzR     
n./v.掩饰,伪装
参考例句:
  • The white fur of the polar bear is a natural camouflage.北极熊身上的白色的浓密软毛是一种天然的伪装。
  • The animal's markings provide effective camouflage.这种动物身上的斑纹是很有效的伪装。
2 evolutionary Ctqz7m     
adj.进化的;演化的,演变的;[生]进化论的
参考例句:
  • Life has its own evolutionary process.生命有其自身的进化过程。
  • These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
3 debris debris     
n.瓦砾堆,废墟,碎片
参考例句:
  • After the bombing there was a lot of debris everywhere.轰炸之后到处瓦砾成堆。
  • Bacteria sticks to food debris in the teeth,causing decay.细菌附着在牙缝中的食物残渣上,导致蛀牙。
4 actively lzezni     
adv.积极地,勤奋地
参考例句:
  • During this period all the students were actively participating.在这节课中所有的学生都积极参加。
  • We are actively intervening to settle a quarrel.我们正在积极调解争执。
5 amber LzazBn     
n.琥珀;琥珀色;adj.琥珀制的
参考例句:
  • Would you like an amber necklace for your birthday?你过生日想要一条琥珀项链吗?
  • This is a piece of little amber stones.这是一块小小的琥珀化石。
6 previously 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。
7 underlying 5fyz8c     
adj.在下面的,含蓄的,潜在的
参考例句:
  • The underlying theme of the novel is very serious.小说隐含的主题是十分严肃的。
  • This word has its underlying meaning.这个单词有它潜在的含义。
8 anatomy Cwgzh     
n.解剖学,解剖;功能,结构,组织
参考例句:
  • He found out a great deal about the anatomy of animals.在动物解剖学方面,他有过许多发现。
  • The hurricane's anatomy was powerful and complex.对飓风的剖析是一项庞大而复杂的工作。
9 larvae w2CxP     
n.幼虫
参考例句:
  • Larvae are parasitic on sheep.幼虫寄生在绵羊的身上。
  • The larvae prey upon small aphids.这种幼虫以小蚜虫为食。
10 fibers 421d63991f1d1fc8826d6e71d5e15f53     
光纤( fiber的名词复数 ); (织物的)质地; 纤维,纤维物质
参考例句:
  • Thesolution of collagen-PVA was wet spined with the sodium sulfate as coagulant and collagen-PVA composite fibers were prepared. 在此基础上,以硫酸钠为凝固剂,对胶原-PVA共混溶液进行湿法纺丝,制备了胶原-PVA复合纤维。
  • Sympathetic fibers are distributed to all regions of the heart. 交感神经纤维分布于心脏的所有部分。
11 utilizing fbe1505f632dff25652a1730952a6464     
v.利用,使用( utilize的现在分词 )
参考例句:
  • Utilizing an assembler to produce a machine-language program. 用汇编程序产生机器语言的过程。 来自辞典例句
  • The study and use of devices utilizing properties of materials near absolute zero in temperature. 对材料在接近绝对零度时的特性进行研究和利用的学科。 来自辞典例句
12 immature Saaxj     
adj.未成熟的,发育未全的,未充分发展的
参考例句:
  • Tony seemed very shallow and immature.托尼看起来好像很肤浅,不夠成熟。
  • The birds were in immature plumage.这些鸟儿羽翅未全。
13 repertoire 2BCze     
n.(准备好演出的)节目,保留剧目;(计算机的)指令表,指令系统, <美>(某个人的)全部技能;清单,指令表
参考例句:
  • There is an extensive repertoire of music written for the flute.有很多供长笛演奏的曲目。
  • He has added considerably to his piano repertoire.他的钢琴演奏曲目大大增加了。
14 ecological IrRxX     
adj.生态的,生态学的
参考例句:
  • The region has been declared an ecological disaster zone.这个地区已经宣布为生态灾难区。
  • Each animal has its ecological niche.每种动物都有自己的生态位.
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