Cargando…
Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production
Highbush blueberry yields are dependent on pollination by bees, and introduction of managed honey bees is the primary strategy used for pollination of this crop. Complementary pollination services are also provided by wild bees, yet highbush blueberry is increasingly grown in regions outside its nat...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4938509/ https://www.ncbi.nlm.nih.gov/pubmed/27391969 http://dx.doi.org/10.1371/journal.pone.0158937 |
_version_ | 1782441867999182848 |
---|---|
author | Gibbs, Jason Elle, Elizabeth Bobiwash, Kyle Haapalainen, Tiia Isaacs, Rufus |
author_facet | Gibbs, Jason Elle, Elizabeth Bobiwash, Kyle Haapalainen, Tiia Isaacs, Rufus |
author_sort | Gibbs, Jason |
collection | PubMed |
description | Highbush blueberry yields are dependent on pollination by bees, and introduction of managed honey bees is the primary strategy used for pollination of this crop. Complementary pollination services are also provided by wild bees, yet highbush blueberry is increasingly grown in regions outside its native range where wild bee communities may be less adapted to the crop and growers may still be testing appropriate honey bee stocking densities. To contrast crop pollination in native and non-native production regions, we sampled commercial ‘Bluecrop’ blueberry fields in British Columbia and Michigan with grower-selected honey bee stocking rates (0–39.5 hives per ha) to compare bee visitors to blueberry flowers, pollination and yield deficits, and how those vary with local- and landscape-scale factors. Observed and Chao-1 estimated species richness, as well as Shannon diversity of wild bees visiting blueberries were significantly higher in Michigan where the crop is within its native range. The regional bee communities were also significantly different, with Michigan farms having greater dissimilarity than British Columbia. Blueberry fields in British Columbia had fewer visits by honey bees than those in Michigan, irrespective of stocking rate, and they also had lower berry weights and a significant pollination deficit. In British Columbia, pollination service increased with abundance of wild bumble bees, whereas in Michigan the abundance of honey bees was the primary predictor of pollination. The proportion of semi-natural habitat at local and landscape scales was positively correlated with wild bee abundance in both regions. Wild bee abundance declined significantly with distance from natural borders in Michigan, but not in British Columbia where large-bodied bumble bees dominated the wild bee community. Our results highlight the varying dependence of crop production on different types of bees and reveal that strategies for pollination improvement in the same crop can vary greatly across production regions. |
format | Online Article Text |
id | pubmed-4938509 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-49385092016-07-22 Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production Gibbs, Jason Elle, Elizabeth Bobiwash, Kyle Haapalainen, Tiia Isaacs, Rufus PLoS One Research Article Highbush blueberry yields are dependent on pollination by bees, and introduction of managed honey bees is the primary strategy used for pollination of this crop. Complementary pollination services are also provided by wild bees, yet highbush blueberry is increasingly grown in regions outside its native range where wild bee communities may be less adapted to the crop and growers may still be testing appropriate honey bee stocking densities. To contrast crop pollination in native and non-native production regions, we sampled commercial ‘Bluecrop’ blueberry fields in British Columbia and Michigan with grower-selected honey bee stocking rates (0–39.5 hives per ha) to compare bee visitors to blueberry flowers, pollination and yield deficits, and how those vary with local- and landscape-scale factors. Observed and Chao-1 estimated species richness, as well as Shannon diversity of wild bees visiting blueberries were significantly higher in Michigan where the crop is within its native range. The regional bee communities were also significantly different, with Michigan farms having greater dissimilarity than British Columbia. Blueberry fields in British Columbia had fewer visits by honey bees than those in Michigan, irrespective of stocking rate, and they also had lower berry weights and a significant pollination deficit. In British Columbia, pollination service increased with abundance of wild bumble bees, whereas in Michigan the abundance of honey bees was the primary predictor of pollination. The proportion of semi-natural habitat at local and landscape scales was positively correlated with wild bee abundance in both regions. Wild bee abundance declined significantly with distance from natural borders in Michigan, but not in British Columbia where large-bodied bumble bees dominated the wild bee community. Our results highlight the varying dependence of crop production on different types of bees and reveal that strategies for pollination improvement in the same crop can vary greatly across production regions. Public Library of Science 2016-07-08 /pmc/articles/PMC4938509/ /pubmed/27391969 http://dx.doi.org/10.1371/journal.pone.0158937 Text en © 2016 Gibbs et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Gibbs, Jason Elle, Elizabeth Bobiwash, Kyle Haapalainen, Tiia Isaacs, Rufus Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production |
title | Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production |
title_full | Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production |
title_fullStr | Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production |
title_full_unstemmed | Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production |
title_short | Contrasting Pollinators and Pollination in Native and Non-Native Regions of Highbush Blueberry Production |
title_sort | contrasting pollinators and pollination in native and non-native regions of highbush blueberry production |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4938509/ https://www.ncbi.nlm.nih.gov/pubmed/27391969 http://dx.doi.org/10.1371/journal.pone.0158937 |
work_keys_str_mv | AT gibbsjason contrastingpollinatorsandpollinationinnativeandnonnativeregionsofhighbushblueberryproduction AT elleelizabeth contrastingpollinatorsandpollinationinnativeandnonnativeregionsofhighbushblueberryproduction AT bobiwashkyle contrastingpollinatorsandpollinationinnativeandnonnativeregionsofhighbushblueberryproduction AT haapalainentiia contrastingpollinatorsandpollinationinnativeandnonnativeregionsofhighbushblueberryproduction AT isaacsrufus contrastingpollinatorsandpollinationinnativeandnonnativeregionsofhighbushblueberryproduction |