四川师范大学学报（自然科学版）2018，Vol.41Issue(1)：110-116,7.DOI:10.3969/j.issn.1001-8395.2018.01.020
西双版纳榕树-榕小蜂互惠系统中线虫多样性的初步研究
Research on Biodiversity of Nematodes in Fig-Fig Wasp Mutualism in Xishuangbanna
摘要
Abstract
Fig trees (Ficus)are high biodiversity in the tropical rainforest of Xishuangbanna. The fig tree and its species-specific pollinating fig wasp constitute a classic mutualism. Except for the pollinating fig wasp,syconia (figs)are exploited by non-pollinating fig wasps,and it is known that nematodes are associated with figs and pollinating fig wasps to develop and complete life cycle regularly, which the nematodes have co-evolved with the fig tree and pollinating fig wasp to show specialization obviously. In this study,32 spe-cies of fig trees distributed in Xishuangbanna tropical region were selected to investigate the biodiversity of nematodes,which included 14 species of monoecious fig trees and 18 species of dioecious fig trees. The inter-floral phase figs were used to collect nematodes inside figs. The results showed that 24 species of nematodes were found from 19 species of fig trees. Only 7 species of nematodes were known,and 17 species were new species of nematodes. In dioecious fig trees,the nematodes in male figs were able to infect female pollinating fig wasps so that they had chance to reach receptive figs,and successfully reproduced. While the nematodes in female figs were difficult to escape their natal figs because there was no any fig wasp to transfer them,so the reproductive fitness of nematodes was zero in female figs. However,some nematodes still happened in the female figs of 6 Ficus species. It suggests that the nematodes can correctly infest female pollinating fig wasps,but they can not choose male or female figs. This is the first study about fig nematode spe-cies and diversity in Xishuangbanna tropical region,which will enrich fig nematode diversity in China,as well as in tropical Asia.关键词
榕树/传粉榕小蜂/寄生线虫/线虫多样性Key words
fig trees/pollinating fig wasps/parasitic nematodes/diversity of nematodes分类
农业科技引用本文复制引用
师荣荣,苗白鸽,彭艳琼..西双版纳榕树-榕小蜂互惠系统中线虫多样性的初步研究[J].四川师范大学学报（自然科学版）,2018,41(1):110-116,7.基金项目
国家自然科学基金(31672373和31600302) （31672373和31600302）
