Euglossine bees mediate only limited long-distance gene flow in a tropical vine
(2017) In New Phytologist 213(4). p.1898-1908- Abstract
Euglossine bees (Apidae: Euglossini) have long been hypothesized to act as long-distance pollinators of many low-density tropical plants. We tested this hypothesis by the analysis of gene flow and genetic structure within and among populations of the euglossine bee-pollinated vine Dalechampia scandens. Using microsatellite markers, we assessed historical gene flow by the quantification of regional-scale genetic structure and isolation by distance among 18 populations, and contemporary gene flow by the estimation of recent migration rates among populations. To assess bee-mediated pollen dispersal on a smaller scale, we conducted paternity analyses within a focal population, and quantified within-population spatial genetic structure in... (More)
Euglossine bees (Apidae: Euglossini) have long been hypothesized to act as long-distance pollinators of many low-density tropical plants. We tested this hypothesis by the analysis of gene flow and genetic structure within and among populations of the euglossine bee-pollinated vine Dalechampia scandens. Using microsatellite markers, we assessed historical gene flow by the quantification of regional-scale genetic structure and isolation by distance among 18 populations, and contemporary gene flow by the estimation of recent migration rates among populations. To assess bee-mediated pollen dispersal on a smaller scale, we conducted paternity analyses within a focal population, and quantified within-population spatial genetic structure in four populations. Gene flow was limited to certain nearby populations within continuous forest blocks, whereas drift appeared to dominate on larger scales. Limited long-distance gene flow was supported by within-population patterns; gene flow was biased towards nearby plants, and significant small-scale spatial genetic structure was detected within populations. These findings suggest that, although female euglossine bees might be effective at moving pollen within populations, and perhaps within forest blocks, their contribution to gene flow on the regional scale seems too limited to counteract genetic drift in patchily distributed tropical plants. Among-population gene flow might have been reduced following habitat fragmentation.
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- author
- Opedal, Øystein H. LU ; Falahati-Anbaran, Mohsen ; Albertsen, Elena ; Armbruster, W. Scott ; Pérez-Barrales, Rocío ; Stenøien, Hans K. and Pélabon, Christophe
- publishing date
- 2017-03-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Dalechampia, Euglossini, orchid bees, paternity analysis, plant–pollinator interactions, spatial genetic structure
- in
- New Phytologist
- volume
- 213
- issue
- 4
- pages
- 11 pages
- publisher
- Wiley-Blackwell
- external identifiers
-
- pmid:27997039
- scopus:85007298543
- ISSN
- 0028-646X
- DOI
- 10.1111/nph.14380
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2016 The Authors. New Phytologist © 2016 New Phytologist Trust
- id
- da627e21-0397-40bb-924c-5178c9544028
- date added to LUP
- 2024-07-24 08:04:04
- date last changed
- 2024-08-13 15:04:29
@article{da627e21-0397-40bb-924c-5178c9544028,
abstract = {{<p>Euglossine bees (Apidae: Euglossini) have long been hypothesized to act as long-distance pollinators of many low-density tropical plants. We tested this hypothesis by the analysis of gene flow and genetic structure within and among populations of the euglossine bee-pollinated vine Dalechampia scandens. Using microsatellite markers, we assessed historical gene flow by the quantification of regional-scale genetic structure and isolation by distance among 18 populations, and contemporary gene flow by the estimation of recent migration rates among populations. To assess bee-mediated pollen dispersal on a smaller scale, we conducted paternity analyses within a focal population, and quantified within-population spatial genetic structure in four populations. Gene flow was limited to certain nearby populations within continuous forest blocks, whereas drift appeared to dominate on larger scales. Limited long-distance gene flow was supported by within-population patterns; gene flow was biased towards nearby plants, and significant small-scale spatial genetic structure was detected within populations. These findings suggest that, although female euglossine bees might be effective at moving pollen within populations, and perhaps within forest blocks, their contribution to gene flow on the regional scale seems too limited to counteract genetic drift in patchily distributed tropical plants. Among-population gene flow might have been reduced following habitat fragmentation.</p>}},
author = {{Opedal, Øystein H. and Falahati-Anbaran, Mohsen and Albertsen, Elena and Armbruster, W. Scott and Pérez-Barrales, Rocío and Stenøien, Hans K. and Pélabon, Christophe}},
issn = {{0028-646X}},
keywords = {{Dalechampia; Euglossini; orchid bees; paternity analysis; plant–pollinator interactions; spatial genetic structure}},
language = {{eng}},
month = {{03}},
number = {{4}},
pages = {{1898--1908}},
publisher = {{Wiley-Blackwell}},
series = {{New Phytologist}},
title = {{Euglossine bees mediate only limited long-distance gene flow in a tropical vine}},
url = {{http://dx.doi.org/10.1111/nph.14380}},
doi = {{10.1111/nph.14380}},
volume = {{213}},
year = {{2017}},
}