聚果榕雄花前期隐头果内小蜂瘿花分布格局的初步研究  

Distribution Patterns of Galls with Different Fig Wasps in Syconium of Monoecious Ficus racemosa

作　　者：翟树伟[1] 杨大荣[1] 彭艳琼[1] 

机构地区：[1]中国科学院西双版纳热带植物园

出　　处：《林业科学研究》2008年第2期145-149,共5页Forest Research

基　　金：国家自然科学基金(30571507,30200220)

摘　　要：雌雄同株榕树聚果榕隐头果内的瘿花在雄花前期分层明显,根据花梗长度的不同,可分为3层:靠近果腔的内层(花梗长度为5.13±0.65 mm),中层(花梗长度为3.60±0.47 mm)以及靠近果壁的外层(花梗长度为1.32±0.15 mm)。3个层次的瘿花子房大小明显不同,内层瘿花子房显著大于中层和外层子房。各种小蜂所占据的瘿花子房大小也存在较大差异:Platyneura testacea显著大于其它各类小蜂所在子房的大小,P.mayri的瘿花子房大小与Apocrypta.westwoodi和Apocryptasp.差别不大,却显著大于P.agraensis与传粉榕小蜂。传粉榕小蜂所在的瘿花子房倾向于分布在内层以及中层,而非传粉小蜂则多居于外层瘿花子房中,造瘿者P.testacea所在的瘿花分布格局与其它非传粉小蜂的不同,而与传粉榕小蜂的相似。无论是造瘿类还是寄生类非传粉小蜂对榕树种子和传粉榕小蜂种群发展均不利。Ficus racemosa Linn.is monoecious,there exist several flower layers in figs at the stage of pre-post flora.According to the pedicel length,the galls are classified into three layers: galls projected into the cavity are named as inner layer(the length of pedicel is 5.13±0.65 mm),then intermediate layer(the length of pedicel is 3.60±0.47 mm),galls next to the fig wall belong to the outer layer(the length of pedicel is 1.32±0.15 mm).The size of ovaries in the different layers are not the same,the ovaries in th...

关 键 词：雌雄异株 传粉榕小蜂 非传粉榕小蜂 共存 聚果榕 

分 类 号：Q948[生物学—植物学]