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Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception?
BACKGROUND: Polyandry is commonly maintained by direct benefits in gift-giving species, so females may remate as an adaptive foraging strategy. However, the assumption of a direct benefit fades in mating systems where male gift-giving behaviour has evolved from offering nutritive to worthless (non-n...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433081/ https://www.ncbi.nlm.nih.gov/pubmed/28506206 http://dx.doi.org/10.1186/s12862-017-0953-8 |
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author | Pandulli-Alonso, Irene Quaglia, Agustín Albo, Maria J. |
author_facet | Pandulli-Alonso, Irene Quaglia, Agustín Albo, Maria J. |
author_sort | Pandulli-Alonso, Irene |
collection | PubMed |
description | BACKGROUND: Polyandry is commonly maintained by direct benefits in gift-giving species, so females may remate as an adaptive foraging strategy. However, the assumption of a direct benefit fades in mating systems where male gift-giving behaviour has evolved from offering nutritive to worthless (non-nutritive) items. In the spider Paratrechalea ornata, 70% of gifts in nature are worthless. We therefore predicted female receptivity to be independent of hunger in this species. We exposed poorly-fed and well-fed females to multiple males offering nutritive gifts and well-fed females to males offering worthless gifts. RESULTS: Though the treatments strongly affected fecundity, females of all groups had similar number of matings. This confirms that female receptivity is independent of their nutritional state, i.e. polyandry does not prevail as a foraging strategy. CONCLUSIONS: In the spider Pisaura mirabilis, in which the majority (62%) of gifts in nature are nutritive, female receptivity depends on hunger. We therefore propose that the dependence of female receptivity on hunger state may have evolved in species with predominantly nutritive gifts but is absent in species with predominantly worthless gifts. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12862-017-0953-8) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-5433081 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-54330812017-05-17 Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? Pandulli-Alonso, Irene Quaglia, Agustín Albo, Maria J. BMC Evol Biol Research Article BACKGROUND: Polyandry is commonly maintained by direct benefits in gift-giving species, so females may remate as an adaptive foraging strategy. However, the assumption of a direct benefit fades in mating systems where male gift-giving behaviour has evolved from offering nutritive to worthless (non-nutritive) items. In the spider Paratrechalea ornata, 70% of gifts in nature are worthless. We therefore predicted female receptivity to be independent of hunger in this species. We exposed poorly-fed and well-fed females to multiple males offering nutritive gifts and well-fed females to males offering worthless gifts. RESULTS: Though the treatments strongly affected fecundity, females of all groups had similar number of matings. This confirms that female receptivity is independent of their nutritional state, i.e. polyandry does not prevail as a foraging strategy. CONCLUSIONS: In the spider Pisaura mirabilis, in which the majority (62%) of gifts in nature are nutritive, female receptivity depends on hunger. We therefore propose that the dependence of female receptivity on hunger state may have evolved in species with predominantly nutritive gifts but is absent in species with predominantly worthless gifts. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12862-017-0953-8) contains supplementary material, which is available to authorized users. BioMed Central 2017-05-15 /pmc/articles/PMC5433081/ /pubmed/28506206 http://dx.doi.org/10.1186/s12862-017-0953-8 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Article Pandulli-Alonso, Irene Quaglia, Agustín Albo, Maria J. Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
title | Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
title_full | Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
title_fullStr | Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
title_full_unstemmed | Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
title_short | Females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
title_sort | females of a gift-giving spider do not trade sex for food gifts: a consequence of male deception? |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433081/ https://www.ncbi.nlm.nih.gov/pubmed/28506206 http://dx.doi.org/10.1186/s12862-017-0953-8 |
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