《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 k+ v* D) W/ ?
interspecies hybrids that cannot propagate, as alluded to by the artist's
5 B/ T' o' X) A  Tdepiction of the mythical Minotaur's labyrinth on the cover. However, even " b2 i5 d8 M" o
socially na?ve animals rarely mate with members of other species. The mechanisms & g7 o/ @' Z5 b) d4 D
that control such behavioral reproductive isolation, an important tenet of ! G' S7 l  N1 T; S$ l
evolution, are not well understood. As depicted on the cover, male flies tap . j9 K$ |5 i; V4 |
other flies with their foreleg prior to attempting to mate. Fan et al. (pp.
+ A& \& p' J% Y# z) j' i7 K' F89–102) show that foreleg removal permits males to mate with flies of other 2 ^% i! j. K* j" o1 }
species. Activation of foreleg neurons expressing the chemoreceptor Gr32a is
6 [8 |% ~! l3 h5 \# ?necessary and sufficient to inhibit interspecies courtship by D. * l7 ]7 H! u/ P( h$ N1 F, B
melanogastermales. Gr32a is required to detect aversive hydrocarbons found . G6 t7 J3 Y8 |  h+ f: ?
on the cuticle of other drosophilid species, and one such hydrocarbon,
" U& t5 Q! ]+ C4 Nz-11-pentacosene, is visible on the female fly on the cover. Strikingly, female
1 b1 v, U- o7 n8 u4 e* Hflies utilize a Gr32a-independent mechanism to reject males of other species,
, ^+ m) C2 B3 Ywith the cover depicting the female fly rejecting the male who is tapping her.
) c8 Q2 J/ m4 {# s, @6 VCover art by Julie Newdoll. 7 t* L  V' V# f% h0 o: F# f

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yuheng

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tpwang

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exin11

懵懂干细胞

千呼万唤始出来 谢谢

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