简介:这研究对比Papilioglaucus组,的四个成员的ovipositional侧面P。glaucus,P。multicaudatus,P。canadensis,和P。rutulus。我们使用了在七个植物家庭从主人包含叶子的产卵离子生物鉴定由P的成员利用了的七种选择。glaucus组。明确地,我们对比这些的全面ovipositional侧面种类和他们在一个新奇植物家庭的一位主人的接受(Populustremuloides:Salicaceae)并且在一个通常认为地祖先的寄植物家庭的一位主人(Liriodendrontulipifera:Magnoliaceae)。重要差别在P的ovipositional侧面之间被观察。glaucus和P。相对对方并且到P的multicaudatus。canadensis和P。rutulus。相反,没有重要差别在P的ovipositional侧面之间被观察。canadensis和P。rutulus,它也是接受了P的唯一的种类。tremuloides。不同于P的接受。tremuloides,L的接受。尽管有大多数的幼虫的无能,tulipifera在整个这个组是在场的在这个组到的种类利用这个宿主。当新奇主人应该被导出的人口仅仅接受时,这些结果支持“祖先的寄植物是可能的在ovipositional层次被保留的层次阀值模型”的预言。
简介:BeijinghasbeenoneoftheepicentersattackedmostseverelybytheSARS-CoV(severeacuterespiratorysyndrome-associatedcoronavirus)sincethefirstpatientwasdiagnosedinoneofthecity'shospitals.WenowreportcompletegenomesequencesoftheBJGroup,includingfourisolates(IsolatesBJ01,BJ02,BJ03,andBJ04)oftheSARS-CoV.ItisremarkablethatallmembersoftheBJGroupshareacommonhaplotype,consistingofsevenlocithatdifferentiatethegroupfromotherisolatespublishedtodate.Among42substitutionsuniquelyidentifledfromtheBJgroup,32arenon-synonymouschangesattheaminoacidlevel.Rootedphylogenetictrees,proposedonthebasisofhaplotypesandothersequencevariationsofSARS-CoVisolatesfromCanada,USA,Singapore,andChina,gaverisetodifferentparadigmsbutpositionedtheBJGroup,togetherwiththenewlydiscoveredGD01(GD-Ins29)inthesameclade,followedbytheH-UGroup(fromHongKongtoUSA)andtheH-TGroup(fromHongKongtoToronto),leavingtheSPGroup(Singapore)moredistant.ThisresultappearstosuggestapossibletransmissionpathfromGuangdongtoBeijing/HongKong,thentoothercountriesandregions.