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[這篇文章最後由yichance1在 2012/11/03 04:29:57am 第 2 次編輯](*x
睡不著翻譯了一下,破破的翻譯希望能拋磚引玉,看看其他站內專家怎麼說, q
©昆蟲論壇 -- 昆蟲論壇 %Yy
Juvenile hormone regulates extreme mandible growth in male stag beetles.%y
幼蟲時期的賀爾蒙掌管了公蟲的大顎的成長g)9y>x
Gotoh H, Cornette R, Koshikawa S, Okada Y, Lavine LC, Emlen DJ, Miura T.(5!
一堆名字U
©昆蟲論壇 -- 昆蟲論壇 UG4
Laboratory of Ecological Genetics, Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan.dB]
生態遺傳研究室,日本札幌北海道大學環境科學研究所&QwR
©昆蟲論壇 -- 昆蟲論壇 "dBh&V
Abstract大綱|
©昆蟲論壇 -- 昆蟲論壇 ]?(]j}
The morphological diversity of insects is one of the most striking phenomena in biology.dYm}X
昆蟲型態種類區分是在生物學裡其中一項最引人注意的自然現象7J
©昆蟲論壇 -- 昆蟲論壇 +yQ
Evolutionary modifications to the relative sizes of body parts, including the evolution of traits with exaggerated proportions,are responsible for a vast range of body forms.eW_+,
演化的改變到個體相關尺寸的關係,包含以誇張的大顎特徵的演化過程是跟大範圍的身體型態有著密切的關係.W\
©昆蟲論壇 -- 昆蟲論壇 5E@Ov
Remarkable examples of an insect trait with exaggerated proportions are the mandibular weapons of stag beetles.G>KA1<
較會讓人注意到的譬如有著誇張比例昆蟲特徵.把大顎當武器的鍬形蟲8XT
©昆蟲論壇 -- 昆蟲論壇 7b
Male stag beetles possess extremely enlarged mandibles which they use in combat with rival males over females. As with other sexually selected traits,
公鍬形蟲擁有極大的大顎,用在對抗母蟲身旁的其他公鍬形蟲對手上,當以大顎當成性別選擇的一種特徵時,)
stag beetle mandibles vary widely in size among males, and this variable growth results from differential larval nutrition.kS'I
在所有公鍬形蟲里大顎有很寬廣的變化,這個多變化的生長產生於來自不同的幼蟲時期養分XH
©昆蟲論壇 -- 昆蟲論壇 y P
However, the mechanisms responsible for coupling nutrition with growth of stag beetle mandibles (or indeed any insect structure) remain largely unknown.P^4
然而,交配養分的組成與鍬形蟲大顎成長(或任何昆蟲結構)的關係仍存在很大的未知數VEQ}cJ
©昆蟲論壇 -- 昆蟲論壇 *Xf1Q
Here, we demonstrate that during the development of male stag beetles (Cyclommatus metallifer),
juvenile hormone (JH) titers are correlated with the extreme growth of an exaggerated weapon of sexual selection.Ky
這裡,我們證實...在公鍬形蟲的發育期間(以美他為例)幼蟲時期的賀爾蒙量是區分性別的誇張武器的極大地成長有關係)6YQ
We then investigate the putative role of JH in the development of the nutritionally-dependent, phenotypically plastic mandibles,l#H>de
by increasing hemolymph titers of JH with application of the JH analog fenoxycarb during larval and prepupal developmental periods.
在幼蟲及發育時期,運用賀爾蒙的成分檢驗劑方式靠著增加幼蟲賀爾蒙的溶劑量,我們於是研究出幼蟲賀爾蒙在依..賴養分的發育而顯著地形成的大顎所扮演角色.W%
©昆蟲論壇 -- 昆蟲論壇 TB|d
Increased JH signaling during the early prepupal period increased the proportional size of body parts, and this was especially pronounced in male mandibles,9s&
enhancing the exaggerated size of this trait.8v<S
在初期的幼蟲時期,人工增加的幼蟲賀爾蒙信號因子會增大了部分身體的比例(可能指大顎),並且這在公蟲大顎特徵上提升了誇張的尺寸上有特別地明顯.
The direction of this response is consistent with the measured JH titers during this same period. |Dfq?V
(上述)反應出來的結果跟在同一時期量測出的幼蟲賀爾蒙劑量是有一致的關係.,/0,g
©昆蟲論壇 -- 昆蟲論壇 4
Combined,our results support a role for JH in the nutrition-dependent regulation of extreme mandible growth in this species.
綜合以上,我們得到的結果證實了幼蟲賀爾蒙是造成這物種產生極太大顎的營養劑添加上有著這麼一個作用.5&)
©昆蟲論壇 -- 昆蟲論壇 \
In addition, they illuminate mechanisms underlying the evolution of trait proportion, the most salient feature of the evolutionary diversification of the insects.h^T
另外,以上也明顯證明了(昆蟲賀爾蒙)這是在昆蟲界裡最明顯進化的分類上,特徵比例發展的一個原理(M<
©昆蟲論壇 -- 昆蟲論壇 c)R_
(個人認為)簡單的說,就是用賀爾蒙劑量的添加,讓昆蟲產生了公母與大顎大小的差異性OC
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