Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.

Bees provide critical pollination services to 87% of angiosperm plants; however, the reliability of these services may become threatened as bee populations decline. Agricultural intensification, resulting in the simplification of environments at the landscape scale, greatly changes the quality and q...

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Main Authors: Miles Renauld, Alena Hutchinson, Gregory Loeb, Katja Poveda, Heather Connelly
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2016-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0150946&type=printable
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author Miles Renauld
Alena Hutchinson
Gregory Loeb
Katja Poveda
Heather Connelly
author_facet Miles Renauld
Alena Hutchinson
Gregory Loeb
Katja Poveda
Heather Connelly
author_sort Miles Renauld
collection DOAJ
description Bees provide critical pollination services to 87% of angiosperm plants; however, the reliability of these services may become threatened as bee populations decline. Agricultural intensification, resulting in the simplification of environments at the landscape scale, greatly changes the quality and quantity of resources available for female bees to provision their offspring. These changes may alter or constrain the tradeoffs in maternal investment allocation between offspring size, number and sex required to maximize fitness. Here we investigate the relationship between landscape scale agricultural intensification and the size and number of individuals within a wild ground nesting bee species, Andrena nasonii. We show that agricultural intensification at the landscape scale was associated with a reduction in the average size of field collected A. nasonii adults in highly agricultural landscapes but not with the number of individuals collected. Small females carried significantly smaller (40%) pollen loads than large females, which is likely to have consequences for subsequent offspring production and fitness. Thus, landscape simplification is likely to constrain allocation of resources to offspring through a reduction in the overall quantity, quality and distribution of resources.
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spelling doaj.art-7c656ecda48f4eeea1c5d291ca02d3972025-02-25T05:35:21ZengPublic Library of Science (PLoS)PLoS ONE1932-62032016-01-01113e015094610.1371/journal.pone.0150946Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.Miles RenauldAlena HutchinsonGregory LoebKatja PovedaHeather ConnellyBees provide critical pollination services to 87% of angiosperm plants; however, the reliability of these services may become threatened as bee populations decline. Agricultural intensification, resulting in the simplification of environments at the landscape scale, greatly changes the quality and quantity of resources available for female bees to provision their offspring. These changes may alter or constrain the tradeoffs in maternal investment allocation between offspring size, number and sex required to maximize fitness. Here we investigate the relationship between landscape scale agricultural intensification and the size and number of individuals within a wild ground nesting bee species, Andrena nasonii. We show that agricultural intensification at the landscape scale was associated with a reduction in the average size of field collected A. nasonii adults in highly agricultural landscapes but not with the number of individuals collected. Small females carried significantly smaller (40%) pollen loads than large females, which is likely to have consequences for subsequent offspring production and fitness. Thus, landscape simplification is likely to constrain allocation of resources to offspring through a reduction in the overall quantity, quality and distribution of resources.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0150946&type=printable
spellingShingle Miles Renauld
Alena Hutchinson
Gregory Loeb
Katja Poveda
Heather Connelly
Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.
PLoS ONE
title Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.
title_full Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.
title_fullStr Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.
title_full_unstemmed Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.
title_short Landscape Simplification Constrains Adult Size in a Native Ground-Nesting Bee.
title_sort landscape simplification constrains adult size in a native ground nesting bee
url https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0150946&type=printable
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AT katjapoveda landscapesimplificationconstrainsadultsizeinanativegroundnestingbee
AT heatherconnelly landscapesimplificationconstrainsadultsizeinanativegroundnestingbee