榕小蜂传粉行为对其繁殖的影响

在西双版纳热带雨林中,对叶榕的传粉榕小蜂不同运载花粉的过程对寄主榕果和自身后代的繁殖都有影响.传粉榕小蜂主动为对叶榕传粉,在雌株上的榕果内,榕小蜂传粉使雌花受精发育成种子,榕小蜂不能在雌果中繁衍后代;在雄株上的榕果里,只有雄花和榕小蜂寄生的雌花,而不能产生种子.从雄花期榕果内出来的传粉榕小蜂雌蜂,飞到其它雄树上寻找雌花期的榕果产卵繁殖后代,经过飞翔的一只雌蜂在一个榕果内制造瘿花353.93±91.72朵,最终发育到成虫期的榕小蜂数量为每果283.28±101.42只,平均瘿花率和成蜂率分别是0.26和0.81.通过控制实验阻断繁殖雌蜂的飞行过程,一只雌蜂在一个榕果内可制造瘿花446.74±60.06朵,完成发育的榕小蜂数量是386.15±87.46只,平均瘿花率和成蜂率分别是0.31和0.88.显然,飞行运载花粉的代价直接减少了传粉榕小蜂繁育后代的数量.

The Impacts of Pollinating Behaviour of FigWasp on Its Reproduction

Research w as carried out on the reproductive impacts of d ifferent carry po llen process o f fig-pollinatingw asp o fF icus hisp ida in the trop ica l rainforest of X ishuangbanna. The results show ed that the po llinatorw as activepo llinat ion, and the female figs just produced seeds rather than w asps, wh ile the male figs produced w asps, andthere w as a seed insidema le fig. The po llinator! s foundresses leftm ale??floral fig and looked fo r new receptive fig forreproduct ion. A foundress average ly made 353. 93 ± 91. 72 ga lls, and on ly 283. 28 ?? 101. 42 w asps w ere able tocomp le te life cycles. The rat io of galls and w asps w as 0. 26 and 0. 81 respect ively. In contro lled experimen,t a nofly ing foundress w as introduced inside sing le fig, wh ich itmade 446. 74 ± 60. 06 ga lls and fina lly 386. 15 ±87. 46comp le ted life cycles. The rat io o f galls and w asps w as 0. 31 and 0. 88 respectively. In contras,t no fly ing foundressalw ays reproducedmore o ffspring than that o f flying foundress. Th is implies that carry ing po llen and fly w ould in??crease reproductive costs of fig??po llinating w asp.