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Mating dynamics and multiple paternity in a long‐lived vertebrate
Multiple paternity is relatively common across diverse taxa; however, the drivers and implications related to paternal and maternal fitness are not well understood. Several hypotheses have been offered to explain the occurrence and frequency of multiple paternity. One set of hypotheses seeks to expl...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787947/ https://www.ncbi.nlm.nih.gov/pubmed/31632641 http://dx.doi.org/10.1002/ece3.5438 |
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author | Zajdel, Joshua Lance, Stacey L. Rainwater, Thomas R. Wilkinson, Phillip M. Hale, Matthew D. Parrott, Benjamin B. |
author_facet | Zajdel, Joshua Lance, Stacey L. Rainwater, Thomas R. Wilkinson, Phillip M. Hale, Matthew D. Parrott, Benjamin B. |
author_sort | Zajdel, Joshua |
collection | PubMed |
description | Multiple paternity is relatively common across diverse taxa; however, the drivers and implications related to paternal and maternal fitness are not well understood. Several hypotheses have been offered to explain the occurrence and frequency of multiple paternity. One set of hypotheses seeks to explain multiple paternity through direct and indirect benefits including increased genetic diversity or enhanced offspring fitness, whereas another set of hypotheses explains multiple paternity as a by‐product of sexual conflict and population‐specific parameters such as density. Here, we investigate mating system dynamics in a historically studied population of the American alligator (Alligator mississippiensis) in coastal South Carolina. We examine parentage in 151 nests across 6 years and find that 43% of nests were sired by multiple males and that male reproductive success is strongly influenced by male size. Whereas clutch size and hatchling size did not differ between singly sired and multiply sired nests, fertility rates were observed to be lower in multiply sired clutches. Our findings suggest that multiple paternity may exert cost in regard to female fitness, and raise the possibility that sexual conflict might influence the frequency of multiple paternity in wild alligator populations. |
format | Online Article Text |
id | pubmed-6787947 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-67879472019-10-18 Mating dynamics and multiple paternity in a long‐lived vertebrate Zajdel, Joshua Lance, Stacey L. Rainwater, Thomas R. Wilkinson, Phillip M. Hale, Matthew D. Parrott, Benjamin B. Ecol Evol Original Research Multiple paternity is relatively common across diverse taxa; however, the drivers and implications related to paternal and maternal fitness are not well understood. Several hypotheses have been offered to explain the occurrence and frequency of multiple paternity. One set of hypotheses seeks to explain multiple paternity through direct and indirect benefits including increased genetic diversity or enhanced offspring fitness, whereas another set of hypotheses explains multiple paternity as a by‐product of sexual conflict and population‐specific parameters such as density. Here, we investigate mating system dynamics in a historically studied population of the American alligator (Alligator mississippiensis) in coastal South Carolina. We examine parentage in 151 nests across 6 years and find that 43% of nests were sired by multiple males and that male reproductive success is strongly influenced by male size. Whereas clutch size and hatchling size did not differ between singly sired and multiply sired nests, fertility rates were observed to be lower in multiply sired clutches. Our findings suggest that multiple paternity may exert cost in regard to female fitness, and raise the possibility that sexual conflict might influence the frequency of multiple paternity in wild alligator populations. John Wiley and Sons Inc. 2019-09-05 /pmc/articles/PMC6787947/ /pubmed/31632641 http://dx.doi.org/10.1002/ece3.5438 Text en © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Zajdel, Joshua Lance, Stacey L. Rainwater, Thomas R. Wilkinson, Phillip M. Hale, Matthew D. Parrott, Benjamin B. Mating dynamics and multiple paternity in a long‐lived vertebrate |
title | Mating dynamics and multiple paternity in a long‐lived vertebrate |
title_full | Mating dynamics and multiple paternity in a long‐lived vertebrate |
title_fullStr | Mating dynamics and multiple paternity in a long‐lived vertebrate |
title_full_unstemmed | Mating dynamics and multiple paternity in a long‐lived vertebrate |
title_short | Mating dynamics and multiple paternity in a long‐lived vertebrate |
title_sort | mating dynamics and multiple paternity in a long‐lived vertebrate |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6787947/ https://www.ncbi.nlm.nih.gov/pubmed/31632641 http://dx.doi.org/10.1002/ece3.5438 |
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