Cryptic species have been found in a wide range of marine organisms ; with majority of them are benthic invertebrates. in contrast, marine holoplanktons are thought to have lower diversity and slow speciation due to their strong dispersal potential. this paper reviewed studies on cryptic species and speciation in marine holoplankton. based on findings in 38 studied taxa, it was concluded that : 1 ) cryptic species are pervasive in marine holoplankton, suggesting holoplankton speciation was more active than previously thought ; 2 ) current morphospecies diversity is untenable to reflect true species diversity in marine holoplankton ; 3 ) geographic isolation may facilitate cryptic speciation of marine holoplankton. however, contribution of allopatric speciation is still questionable ; 4 ) ecological speciation may be the prevailing speciation mode in marine holoplankton. cryptic speciation in marine holoplankton is paradoxical, because rapid speciation under strong gene flow is countertuitive. solution of this paradox will help us gain deep insights of marine speciation and biodivesity
隱種廣泛存在於各類海洋生物中,尤其是底棲無脊椎動物.然而,海洋終生浮游生物由於具有較強的擴散能力,往往被視為生物多樣性低、物種形成慢.本文就海洋終生浮游生物隱種與物種形成的研究作一綜述.基於研究的38個種類,結果表明: 1 )海洋終生浮游生物
普遍存在隱種,其物種形成要比想象得快; 2 )由於引種的廣泛存在,形態種生物多樣性無法反映海洋終生浮游生物真正的物種多樣性; 3 )
地理隔離有助於海洋終生浮游生物隱種的形成,但異域物種形成的作用仍值得商榷; 4 )生態物種形成很可能是海洋終生浮游生物物種形成的主流模式.海洋終生浮游生物強基因流下快速的物種形成有悖于生物進化常理,解決該悖論將有助於我們對海洋物種形成和生物多樣性的理解
At one dinner party given by columnist joseph alsop in the 1960s, mrs. graham finally, and at first meekly, rebelled
60年代,在專欄作家約瑟夫?艾爾索
普舉行的一次宴會上,格雷厄姆夫人終于第一次溫和
地反抗陳俗。
Since the united states does exist and is at the leading edge of the information revolution, there is a degree of americanization at present, but it is likely to decrease over the course of the 21st century as technology spreads and local cultures modernize in their own ways
既然美國已經存在,而且也已經在信息革命中獲得了領先
地位,當前存在某種程度的美國化(就不可避免) ,但是,在21世紀,隨著科技的
普及以及不同民族現代化模式的不同,美國化(的現象)也很可能會減弱
Based on the analysis of autonomous agent - based ids and mobile agent - based ids, a multi - agent - based intrusion detection and response system, maidrs, is designed, which not only has the advantages of both autonomous agent - based ids and mobile agent - based ids but also overcomes some their drawbacks. to solve the common problem of configuring agents in agent - based ids, an adaptive model generation, amg, is only designed theoretically for the agents using the ideal of information theory, which makes maidrs more efficient
該系統模型利用多代理的思想來構造分散式入侵檢測與響應系統,使之不但兼有基於自治代理和基於移動代理入侵檢測的優點,又克服了它們各自存在的一些缺陷;針對基於代理的入侵檢測系統
普遍存在的代理配置復雜問題,作者結合信息論的思想從理論上設計了一個自適應模型生成器來為代理自動生成檢測模型,從而使系統能更高效
地運作。
All these rocks aforementioned are mainly parametamorphic rocks. milan, kaqiang and alamasi group underwent high - grade metamorphism of amphibolite facies, together with weak migmatism. they share the same geochemistry and total ree and many other chracters
二者主要為副變質巖石,米蘭巖群和卡羌巖群、阿拉瑪斯巖群變質較深為角閃巖相,
普遍弱混合巖化,它們具有非常相似的
地球化學特徵,稀土元素總量及其它特點一致或相近。
According to wwf, there are only some 450 siberian or amur tigers left in the wild, the vast majority of them roaring in the khabarovsk and primorky regions
總會指出,如今全球僅餘下450頭野生西伯利亞虎又稱東北虎,其中大部份均在哈巴羅夫斯克
地區和
普里莫爾斯基
地區出沒。
Thus, we on one hand should not simply analogize the chinese philosophy with the western philosophy, on the other hand, we should give attention to chinese philosophy ' s unique value and effect on building the universal philosophy of the human
強調中國義理之學的傳統特徵,一方面是為了防止簡單
地將義理之學比附西方哲學;另一方面也是強調義理之學在建構人類「
普遍哲學」方面所體現的獨特價值和貢獻。
Comprehensive geochemical surveys are analysed.
廣義的
地球化學
普查需要分析。
General the medicaments on surgical prescription is lacteal peaceful grain, soft capsule of 6 flavour glutinous rehmannia, lacteal peaceful grain is on anamnesis, i take drug by prescription, where is the doctor ' s responsibility
普外科醫生的處方上的藥物是乳寧顆粒,六味
地黃軟膠囊,病歷上是乳寧顆粒,我是按處方服藥的,醫生的責任在哪裡?
" in simple terms, napoleon ordered the killing of as many blacks as possible in haiti and guadeloupe to be replaced by new, docile slaves from africa, " ribbe said yesterday
里貝25日說: 「簡單
地說,拿破崙當時下令盡可能多
地殺掉海
地和瓜德羅
普地區的黑人,用從非洲新運來的更馴服的奴隸替代他們。 」
A combination of teaching resources, lessons and indexes of website links with an emphasis on physical geography
-中國
地理學會
地理科
普教育專業網,包括
地理科
普地理教學
地理資源。
Currently, the yield of late sown wheat, in punjab, particularly following cotton crop seldom exceeds 2. 5 t / ha
目前在旁遮
普地區,晚播的小麥特別是接棉花茬口的產量很少超過2 . 5噸/公頃。
Sikhism is an indian religion combining islamic and hindu elements, founded in the punjab ( panjab ) in the late 15th century ad by nanak
錫克教是一個把伊斯蘭教和印度教要素合起來的印度宗教,于公元十五世紀後期由那納克在旁遮
普地區創立。
Map and geography trivia game. questions include countries, u. s. states, capitals and flags
-中國
地理學會
地理科
普教育專業網,包括
地理科
普地理教學
地理資源。
Isthmus of perekop
皮里柯普地峽