Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation
Sex allocation theory predicts parents should adjust their investment in male and female offspring in a way that increases parental fitness. This has been shown in several species and selective contexts. Yet, seasonal sex ratio variation within species and its underlying causes are poorly understood...
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Data Archiving and Networked Services (DANS)
2020
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Online Access: | https://doi.org/10.5061/dryad.m9h08 |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::04b3d47a23c0cbd54a378fcb78fd3694 2023-05-15T16:12:17+02:00 Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation Helanterä, Heikki Kulmuni, Jonna Pamilo, Pekka 2020-07-02 https://doi.org/10.5061/dryad.m9h08 undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.m9h08 https://dx.doi.org/10.5061/dryad.m9h08 lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:94712 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:94712 10.5061/dryad.m9h08 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care kin conflict Social evolution Formica pratensis Sex ratio conflict kin selection microsatellite Inclusive fitness Finland Fennoscandia Europe envir psy Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2020 fttriple https://doi.org/10.5061/dryad.m9h08 2023-01-22T16:50:58Z Sex allocation theory predicts parents should adjust their investment in male and female offspring in a way that increases parental fitness. This has been shown in several species and selective contexts. Yet, seasonal sex ratio variation within species and its underlying causes are poorly understood. Here we study sex allocation variation in the wood ant Formica pratensis. This species displays conflict over colony sex ratio as workers and queens prefer different investment in male and female offspring, owing to haplodiploidy and relatedness asymmetries. It is unique among Formica ants because it produces two separate sexual offspring cohorts per season. We predict sex ratios to be closer to queen optimum in the early cohort but more female-biased and closer to worker optimum in the later one. This is because the power of workers to manipulate colony sex ratio varies seasonally with the availability of diploid eggs. Consistently more female-biased sex ratios in the later offspring cohort over a three-year sampling period from 93 colonies clearly support our prediction. The resulting seasonal alternation of sex ratios between queen and worker optima is a novel demonstration how understanding constraints of sex ratio adjustment increases our ability to predict sex ratio variation. Formica pratensis sex allocationNumerical sex allocation data from Formica pratensis colonies from Southern Finland, 2007-2009. Data collected from two cohorts each year, with different sex allocation strategies in the two cohorts. Columns: nest = nest ID, cluster = ID of the colony (for monodomous nests this equals the nest ID, for polydomous colonies several nests are included in the same colony, based on their close physical proximity in the field), year = year, cohort: 1 = early, 2 = late, totalm = number of males in the sample, totalf = number of females in the sample, propmales = totalm /(totalm + totalf), r = relatedness among nestmate workers, calculated based on the genotypes in the pratensis_genotypes.txt file. Note that there ... Dataset Fennoscandia Unknown |
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Open Polar |
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Unknown |
op_collection_id |
fttriple |
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unknown |
topic |
Life sciences medicine and health care kin conflict Social evolution Formica pratensis Sex ratio conflict kin selection microsatellite Inclusive fitness Finland Fennoscandia Europe envir psy |
spellingShingle |
Life sciences medicine and health care kin conflict Social evolution Formica pratensis Sex ratio conflict kin selection microsatellite Inclusive fitness Finland Fennoscandia Europe envir psy Helanterä, Heikki Kulmuni, Jonna Pamilo, Pekka Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation |
topic_facet |
Life sciences medicine and health care kin conflict Social evolution Formica pratensis Sex ratio conflict kin selection microsatellite Inclusive fitness Finland Fennoscandia Europe envir psy |
description |
Sex allocation theory predicts parents should adjust their investment in male and female offspring in a way that increases parental fitness. This has been shown in several species and selective contexts. Yet, seasonal sex ratio variation within species and its underlying causes are poorly understood. Here we study sex allocation variation in the wood ant Formica pratensis. This species displays conflict over colony sex ratio as workers and queens prefer different investment in male and female offspring, owing to haplodiploidy and relatedness asymmetries. It is unique among Formica ants because it produces two separate sexual offspring cohorts per season. We predict sex ratios to be closer to queen optimum in the early cohort but more female-biased and closer to worker optimum in the later one. This is because the power of workers to manipulate colony sex ratio varies seasonally with the availability of diploid eggs. Consistently more female-biased sex ratios in the later offspring cohort over a three-year sampling period from 93 colonies clearly support our prediction. The resulting seasonal alternation of sex ratios between queen and worker optima is a novel demonstration how understanding constraints of sex ratio adjustment increases our ability to predict sex ratio variation. Formica pratensis sex allocationNumerical sex allocation data from Formica pratensis colonies from Southern Finland, 2007-2009. Data collected from two cohorts each year, with different sex allocation strategies in the two cohorts. Columns: nest = nest ID, cluster = ID of the colony (for monodomous nests this equals the nest ID, for polydomous colonies several nests are included in the same colony, based on their close physical proximity in the field), year = year, cohort: 1 = early, 2 = late, totalm = number of males in the sample, totalf = number of females in the sample, propmales = totalm /(totalm + totalf), r = relatedness among nestmate workers, calculated based on the genotypes in the pratensis_genotypes.txt file. Note that there ... |
format |
Dataset |
author |
Helanterä, Heikki Kulmuni, Jonna Pamilo, Pekka |
author_facet |
Helanterä, Heikki Kulmuni, Jonna Pamilo, Pekka |
author_sort |
Helanterä, Heikki |
title |
Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation |
title_short |
Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation |
title_full |
Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation |
title_fullStr |
Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation |
title_full_unstemmed |
Data from: Sex allocation conflict between queens and workers in Formica pratensis wood ants predicts seasonal sex ratio variation |
title_sort |
data from: sex allocation conflict between queens and workers in formica pratensis wood ants predicts seasonal sex ratio variation |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2020 |
url |
https://doi.org/10.5061/dryad.m9h08 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:94712 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:94712 10.5061/dryad.m9h08 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 re3data_____::r3d100000044 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.m9h08 https://dx.doi.org/10.5061/dryad.m9h08 |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.m9h08 |
_version_ |
1765997545624961024 |