Extremely high proportions of male flowers and geographic variation in floral ratios within male figs of Ficus tikoua despite pollinators displaying active pollen collection

  title={Extremely high proportions of male flowers and geographic variation in floral ratios within male figs of Ficus tikoua despite pollinators displaying active pollen collection},
  author={Jun-Yin Deng and Rong‐Hua Fu and S. Compton and Dai‐Mei Hu and L. Zhang and F. Yang and Y. Chen and F. Kjellberg},
  journal={Ecology and Evolution},
  pages={607 - 619}
Abstract Most plants are pollinated passively, but active pollination has evolved among insects that depend on ovule fertilization for larval development. Anther‐to‐ovule ratios (A/O ratios, a coarse indicator of pollen‐to‐ovule ratios) are strong indicators of pollination mode in fig trees and are consistent within most species. However, unusually high values and high variation of A/O ratios (0.096–10.0) were detected among male plants from 41 natural populations of Ficus tikoua in China… Expand
Sky islands as foci for divergence of fig trees and their pollinators in southwest China
Three genetically distinct groups of a single Ceratosolen pollinator species that have largely parapatric distributions are identified, highlighting how interplay between the complex topography of the “sky island” complex and climate change has shaped intraspecies differentiation and relationships between the plant and its pollinator. Expand
Interactions Between Figs and Gall-Inducing Fig Wasps: Adaptations, Constraints, and Unanswered Questions
  • R. Borges
  • Frontiers in Ecology and Evolution
  • 2021
The ancient interaction between figs (Ficus, Moraceae) and their pollinating fig wasps is an unusual example of a mutualism between plants and gall-inducing insects. This review intends to offerExpand
High-throughput sequencing uncover Ficus tikoua Bur. chloroplast genome
Ficus tikoua Bur., called “di guo”, is a very important economic plant. However, we know little on its molecular mechanisms for a long time. In this study, three F. tikoua chloroplast genomes wereExpand


Floral ratios in the figs of Ficus montana span the range from actively to passively pollinated fig trees
Variation in inflorescence size and floral ratios among male figs of the Asian Ficus montana and its consequences for the amounts of pollen that would be available for each pollinator to collect were examined. Expand
Some pollinators are more equal than others: Factors influencing pollen loads and seed set capacity of two actively and passively pollinating fig wasps
It is shown here that all pollinators are not equally valuable and producing more pollinators is not necessarily a good option in terms of Ficus male fitness, as only around half of the flowers where pollinators lay eggs produced adult offspring. Expand
Variation in inflorescence size in a dioecious fig tree and its consequences for the plant and its pollinator fig wasp
Significant variation in flower number among figs produced by different individuals growing under uniform conditions indicates that there is a genetic influence on inflorescence size and that this character may be subject to selection. Expand
Phenological Adaptations in Ficus tikoua Exhibit Convergence with Unrelated Extra-Tropical Fig Trees
The timing of release of Ceratosolen fig wasps from male figs in late May and June was synchronized with the presence of receptive figs on female trees, thereby ensuring seed set while allowing remnant pollinator populations to persist. Expand
The functional implications of active and passive pollination in dioecious figs
Comparison of pollination and oviposition process in male and female figs, suggests that stigma shape and function have coevolved with pollination behaviour, in relation to constraints linked with dioecy. Expand
  • R. Cruden
  • Biology, Medicine
  • Evolution; international journal of organic evolution
  • 1977
The overall objective is to show that PIO's reflect the likelihood of sufficient pollen grains reaching each stigma to result in maximum seed set and suggest that PI O's are integrated with other facets of a plant's breeding system. Expand
A comparative analysis of pollen limitation in flowering plants
The results suggest that the influence of phylogenetic history on the intensity of pollen limitation was not particularly strong, and significant variation in the degree of pollen limitations was demonstrated among seven angiosperm families suggesting some phylogenetic component to the phenomenon. Expand
Has Pollination Mode Shaped the Evolution of Ficus Pollen?
Three pollen shape and ornamentation types were found in Ficus, which show characteristics related to passive or active pollination mode, and the pollen shape is very likely shaped bypollination mode in this unique obligate mutualism. Expand
Regulation of seed and pollinator production in the fig-fig wasp mutualism
Female agaonine fig wasps enter Ficus fruits (figs), where they pollinate the flowers and oviposit into the ovaries of a proportion of the flowers via their styles, to help maintain the evolutionary stability of the fig-fig wasp mutualism. Expand
A review of brood-site pollination mutualism: plants providing breeding sites for their pollinators
  • S. Sakai
  • Biology, Medicine
  • Journal of Plant Research
  • 2002
Abstract In this paper, I review pollination systems in which plants provide breeding sites as a reward for pollination. I divide the pollinators into three groups based upon ovipositing sites andExpand