The American Striped Cray Orconectes limosus(Rafinesque),a nearctic crustacean new in theitalian freshwaters(Crustacea Decapoda Cambaridae).The American Striped Cray Orconectes limosus,introduced in several countries ...The American Striped Cray Orconectes limosus(Rafinesque),a nearctic crustacean new in theitalian freshwaters(Crustacea Decapoda Cambaridae).The American Striped Cray Orconectes limosus,introduced in several countries of Central Europe,is also reported for the first time for Italy.This crayfishseems to become well established in the Iseo Lake(Northern Italy).The Author underlines the risk of a possibleterritorial expansion of this species in the Po river drainage.展开更多
首先,本文的题目就值得玩味一番,它与两个原因修辞格有涉:英语有谚语云live and learn(活到老学不了),作者将live改成了love,新意溢出,这是运用了Parody(仿拟)辞格,另外,它又运用了Alliteration(头韵)。 数十年来,研究人员猜度: animals...首先,本文的题目就值得玩味一番,它与两个原因修辞格有涉:英语有谚语云live and learn(活到老学不了),作者将live改成了love,新意溢出,这是运用了Parody(仿拟)辞格,另外,它又运用了Alliteration(头韵)。 数十年来,研究人员猜度: animals that could associate food,mates or rivals with external “clues”might havemore reproductive success.(能够将食物、配偶或“情敌”与外界的信息联系起来的动物就具有更多的繁殖成功的机会。) 最终,通过一项有趣的实验,这种“猜度”得到了证实: Hollis trained seven male fish to expect a mating opportunity by turning on a lightjust before exposing them to a female. After 18 days,the males conditioned to react to the light seemed less aggressiveand mated more quickly and more frequently. 更令人惊奇的是: their spawn(卵)she found that they produced 40 times as many young as thecontrol group. 文章过半,我们才知,标题上的Learn原来指:Fish can learn to anticipate sex.这样,本文的标题似可译:爱与学会求爱。 本文的结尾出现:Hollis also suspects that learning to anticipate events may have…展开更多
Nei mesi di giugno e settembre 1991 ho potuto constatare la presenza di unmaschio di Picchio cenerino, dal comportamento molto territoriale, in una convalledella Val Negrini, nel Parco Alto Garda Bresciano (tav. IGM 3...Nei mesi di giugno e settembre 1991 ho potuto constatare la presenza di unmaschio di Picchio cenerino, dal comportamento molto territoriale, in una convalledella Val Negrini, nel Parco Alto Garda Bresciano (tav. IGM 35 III NE). Il 13 giugno ho udito ripetutamente il caratteristico richiamo, mentre il 22 set-tembre ne ho stimolato la risposta con un magnetofono, sempre nello stesso luogo;purtroppo per le difficoltà causate dalla complessa morfologia del terreno e展开更多
文摘The American Striped Cray Orconectes limosus(Rafinesque),a nearctic crustacean new in theitalian freshwaters(Crustacea Decapoda Cambaridae).The American Striped Cray Orconectes limosus,introduced in several countries of Central Europe,is also reported for the first time for Italy.This crayfishseems to become well established in the Iseo Lake(Northern Italy).The Author underlines the risk of a possibleterritorial expansion of this species in the Po river drainage.
文摘首先,本文的题目就值得玩味一番,它与两个原因修辞格有涉:英语有谚语云live and learn(活到老学不了),作者将live改成了love,新意溢出,这是运用了Parody(仿拟)辞格,另外,它又运用了Alliteration(头韵)。 数十年来,研究人员猜度: animals that could associate food,mates or rivals with external “clues”might havemore reproductive success.(能够将食物、配偶或“情敌”与外界的信息联系起来的动物就具有更多的繁殖成功的机会。) 最终,通过一项有趣的实验,这种“猜度”得到了证实: Hollis trained seven male fish to expect a mating opportunity by turning on a lightjust before exposing them to a female. After 18 days,the males conditioned to react to the light seemed less aggressiveand mated more quickly and more frequently. 更令人惊奇的是: their spawn(卵)she found that they produced 40 times as many young as thecontrol group. 文章过半,我们才知,标题上的Learn原来指:Fish can learn to anticipate sex.这样,本文的标题似可译:爱与学会求爱。 本文的结尾出现:Hollis also suspects that learning to anticipate events may have…
文摘Nei mesi di giugno e settembre 1991 ho potuto constatare la presenza di unmaschio di Picchio cenerino, dal comportamento molto territoriale, in una convalledella Val Negrini, nel Parco Alto Garda Bresciano (tav. IGM 35 III NE). Il 13 giugno ho udito ripetutamente il caratteristico richiamo, mentre il 22 set-tembre ne ho stimolato la risposta con un magnetofono, sempre nello stesso luogo;purtroppo per le difficoltà causate dalla complessa morfologia del terreno e
