Cost and benefits of attractive floral traits in the annual species Madia sativa (Asteraceae)

Celedón-Neghme, Constanza; Gonzáles, Wilfredo L.; Gianoli, Ernesto

doi:10.1007/s10682-006-9002-6

Cited by 29 publications

(23 citation statements)

References 39 publications

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“…The extended duration of receptivity seen in F. semicordata can be interpreted as a response to the possibility of pollinator shortages that these factors generate, thereby increasing the reproductive success of the plants and benefitting the fig-fig wasp mutualism in general. As in other flowering plants, floral longevity reflects a balance between benefits and costs (Celedón-Neghme et al 2007;Castro et al 2008). The maintenance costs of retaining syconia are unknown, but in F. semicordata the syconia become less attractive and less likely to be pollinated as they become older and so are less efficient.…”

Section: Discussionmentioning

confidence: 99%

“…In animal-pollinated plants, floral longevity (the length of time a flower has viable pollen and receptive stigmas) equates with the maximum period for which a flower can wait for a pollinator to arrive (Petanidou et al 2001;Celedón-Neghme et al 2007). Floral longevity can vary from hours to weeks in different plant species and reflects a balance between the benefits of increased pollinator visits and the costs of continued flower maintenance (Primack 1985;Ashman and Schoen 1994;Yasaka and Nishiwaki 1998;Abe 2001;Rathcke 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Prolonging the duration of receptivity may maximize the number of encounters, but the optimal numbers of pollinator visits for female function may be different from what is optimal for male function (Celedón-Neghme et al 2007;Khadari et al 1995). This difference is most readily visualized in dioecious plants.…”

Section: Introductionmentioning

confidence: 99%

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Costs of inflorescence longevity for an Asian fig tree and its pollinator

et al. 2011

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In ecological situations where interactions between two species are to their mutual benefit, traits are expected to evolve to maximise the value of the timing of their encounters. Plants that depend on animals for pollination vary in the longevity of their flowers and also in how the quality of the rewards they offer varies in flowers of different ages. However, costs of floral longevity are rarely studied. Using field experiments with Ficus semicordata, a SE Asian dioecious fig tree, we examined sexual differences in syconium ageing, how the reproductive success of the plant and its pollinator change with syconium age and whether these changes are reflected in pollinator preferences. Un-pollinated syconia remained receptive to their host-specific pollinators for long periods, but eventually abort. Compared with male syconia, un-pollinated female syconia aborted more quickly and lost their ability to attract pollinators more quickly. Older pollinated female syconia were also more likely to abort. Further, declines in productivity with syconium age were also more apparent in female syconia, though older male syconia also produced fewer, smaller wasp offspring. The longevity costs are reflected in pollinator preferences. This suggests that sexual differences in duration of receptivity may be adaptive and a component of the reproductive strategies. It also indicates that placing fig wasps onto older syconia over-estimates their likelihood of being pollinated under natural conditions and prolonged receptivity increases the likelihood of pollination at the cost of reduced productivity with syconium age. This opens interesting perspectives on the co-evolution of this inter-specific interaction.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Costs of inflorescence longevity for an Asian fig tree and its pollinator

et al. 2011

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“…As we predicted, Xower size signiWcantly aVected RA; RA beneWts were previously shown to be high in smallXowered plants in this species (Elle and Carney 2003), but the larger number of populations studied here make a strong case for the generality of these results. Other studies have likewise indicated the importance of Xoral morphology for either the ability of plants to self autonomously or the potential RA beneWt of such selWng (Runions and Geber 2000;Celedon-Neghme et al 2007; but see Eckert and Schaefer 1998). Within Xower size categories, however, the RA beneWt did not vary with population size.…”

Section: B)mentioning

confidence: 93%

The reproductive assurance benefit of selfing: importance of flower size and population size

Kennedy

Elle

2007

Oecologia

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Autonomous selfing can provide reproductive assurance (RA) for flowering plants that are unattractive to pollinators or in environments that are pollen limited. Pollen limitation may result from the breakdown of once-continuous habitat into smaller, more isolated patches (habitat fragmentation) if fragmentation negatively impacts pollinator populations. Here we quantify the levels of pollen limitation and RA among large and small populations of Collinsia parviflora, a wildflower with inter-population variation in flower size. We found that none of the populations were pollen limited, as pollen-supplemented and intact flowers did not differ in seed production. There was a significant effect of flower size on RA; intact flowers (can self) produced significantly more seeds than emasculated flowers (require pollen delivery) in small-flowered plants but not large-flowered plants. Population size nested within flower size did not significantly affect RA, but there was a large difference between our two replicate populations for large-flowered, small populations and small-flowered, large populations that appears related to a more variable pollination environment under these conditions. In fact, levels of RA were strongly negatively correlated with rates of pollinator visitation, whereby infrequent visitation by pollinators yielded high levels of RA via autonomous selfing, but there was no benefit of autonomous selfing when visitation rates were high. These results suggest that autonomous selfing may be adaptive in fragmented habitats or other ecological circumstances that affect pollinator visitation rates.

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“…Extrinsic factors may also affect individual attractiveness for pollinators. For instance, the degree of isolation, i.e., the distance of a focal plant to neighbour plants, is often negatively associated with individual attractiveness (Dafni 1992;Celedón-Neghme et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Foliar damage modifies floral attractiveness to pollinators in Alstroemeria exerens

2008

Self Cite

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Pollination is a requisite for sexual reproduction in plants and its success may determine the reproductive output of individuals. Pollinator preference for some floral designs or displays that are lacking or poorly developed in focal plants may constrain the pollination process. Foliar herbivory may affect the expression of floral traits, thus reducing pollinator attraction. Natural populations of the Andean species Alstroemeria exerens (Alstromeriaceae) in central Chile show high levels of foliar herbivory, and floral traits show phenotypic variation. In the present field study, we addressed the attractive role of floral traits in A. exerens and the effect of foliar damage on them. Particularly, we posed the following questions: (1) Is there an association between floral display and design traits and the number and duration of pollinator visits? and (2) Does foliar damage affect the floral traits associated with pollinator visitation? To assess the attractiveness of floral traits for pollinators, we recorded the number and duration of visits in 101 focal plants. To evaluate the effects of foliar damage on floral traits, 100 plants of similar size were randomly assigned to control or damage groups during early bud development. Damaged plants were clipped using scissors (50% of leaf area) and control plants were manually excluded from natural herbivores (\5% of leaf area eaten). During the peak of flowering, we recorded the number of open flowers, and estimated corolla and nectar guide areas.The number and duration of pollinator visits was statistically associated with floral design and display traits. Plants with larger displays, corollas and nectar guide areas received more visits. Visits lasted longer as display increases. In addition, foliar damage affected attractive traits. Damaged plants had fewer open flowers and smaller nectar guide areas. We conclude that foliar damage affects plant attractiveness for pollinators and hence may indirectly affect plant fitness.

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Cost and benefits of attractive floral traits in the annual species Madia sativa (Asteraceae)

Cited by 29 publications

References 39 publications

Costs of inflorescence longevity for an Asian fig tree and its pollinator

Costs of inflorescence longevity for an Asian fig tree and its pollinator

The reproductive assurance benefit of selfing: importance of flower size and population size

Foliar damage modifies floral attractiveness to pollinators in Alstroemeria exerens

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