《细胞》[Cell]13年7月3日出版pdf全文

nero1981

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On the cover: Developmental mechanisms generate 1 J: l* k$ V3 R' s) Y  E; Y4 N
interspecies hybrids that cannot propagate, as alluded to by the artist's 4 {7 g, U) n5 ]& }. e. j3 y
depiction of the mythical Minotaur's labyrinth on the cover. However, even
& b; y; K, a+ W0 }socially na?ve animals rarely mate with members of other species. The mechanisms - v' ]/ r& H3 {5 Q- E
that control such behavioral reproductive isolation, an important tenet of + c& i: J& C/ d+ o( P
evolution, are not well understood. As depicted on the cover, male flies tap : b. ^! U7 N8 q; O" ]9 H0 N! L
other flies with their foreleg prior to attempting to mate. Fan et al. (pp.
; i0 L. F, B5 e* h89–102) show that foreleg removal permits males to mate with flies of other / C( u- T. d7 m& t7 q
species. Activation of foreleg neurons expressing the chemoreceptor Gr32a is
4 Q$ u$ ^4 d% N' N) ]necessary and sufficient to inhibit interspecies courtship by D.
. Q" F0 @! ]0 F6 S. Xmelanogastermales. Gr32a is required to detect aversive hydrocarbons found ' r2 P& B9 F7 v7 t
on the cuticle of other drosophilid species, and one such hydrocarbon, ) z" D2 o. ~/ i# {; L3 A, a# Z+ x
z-11-pentacosene, is visible on the female fly on the cover. Strikingly, female ' h4 P! T9 [0 p( o) e
flies utilize a Gr32a-independent mechanism to reject males of other species, $ q- @! S; r7 d: }' |  d
with the cover depicting the female fly rejecting the male who is tapping her. # v, ~% c! |) }6 ]: s
Cover art by Julie Newdoll.
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yuheng

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tpwang

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cz200203

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exin11

懵懂干细胞

千呼万唤始出来 谢谢

chichao0000

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eley

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zorro

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MZzhang

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