Academic Journal
The Landscape Genetic Signature of Pollination by Trapliners: Evidence From the Tropical Herb, Heliconia tortuosa
| العنوان: | The Landscape Genetic Signature of Pollination by Trapliners: Evidence From the Tropical Herb, Heliconia tortuosa |
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| المؤلفون: | Felipe Torres-Vanegas, Adam S. Hadley, Urs G. Kormann, Frank Andrew Jones, Matthew G. Betts, Helene H. Wagner |
| المصدر: | Frontiers in Genetics, Vol 10 (2019) |
| بيانات النشر: | Frontiers Media S.A. |
| سنة النشر: | 2019 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | gene flow, hummingbird, pollen pool differentiation, pollination network, pollinator recognition, TwoGener, Genetics, QH426-470 |
| الوصف: | Animal-mediated pollination is essential for the maintenance of plant reproduction, especially in tropical ecosystems, where pollination networks have been thought to have highly generalized structures. However, accumulating evidence suggests that not all floral visitors provide equally effective pollination services, potentially reducing the number of realized pollinators and increasing the cryptic specialization of pollination networks. Thus, there is a need to understand how different functional groups of pollinators influence pollination success. Here, we examined whether patterns of contemporary pollen-mediated gene flow in Heliconia tortuosa are consistent with the foraging strategy of its territorial or traplining hummingbird pollinators. Territorial hummingbirds defend clumps of flowers and are expected to transfer pollen locally. In contrast, traplining hummingbirds forage across longer distances, thereby increasing pollen flow among forest fragments, and are thought to repeatedly visit particular plants. If trapliners indeed visit the same plants repeatedly along their regular routes, this could lead to a situation where neighboring plants sample genetically distinct pollen pools. To test this hypothesis, we genotyped 720 seeds and 71 mother plants from 18 forest fragments at 11 microsatellite loci. We performed TwoGener analysis to test pollen pool differentiation within sites (among neighboring plants within the same forest fragment: ΦSC) and between sites (among forest fragments: ΦCT). We found strong, statistically significant pollen pool differentiation among neighboring mother plants (ΦSC = 0.0506), and weaker, statistically significant differentiation among sites (ΦCT = 0.0285). We interpret this pattern of hierarchical pollen pool differentiation as the landscape genetic signature of the foraging strategy of traplining hummingbirds, where repeatable, long-distance, and high-fidelity routes transfer pollen among particular plants. Although H. tortuosa is also visited by territorial hummingbirds, ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1664-8021 |
| Relation: | https://www.frontiersin.org/article/10.3389/fgene.2019.01206/full; https://doaj.org/toc/1664-8021; https://doaj.org/article/fc87bcf97a8443358aa0c690a1962af5 |
| DOI: | 10.3389/fgene.2019.01206 |
| الاتاحة: | https://doi.org/10.3389/fgene.2019.01206 https://doaj.org/article/fc87bcf97a8443358aa0c690a1962af5 |
| رقم الانضمام: | edsbas.464049CF |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 16648021 |
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| DOI: | 10.3389/fgene.2019.01206 |