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Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail

Reproductive success is a critical fitness attribute that is directly influenced by resource availability. Here, we investigate the effects of diet-based resource availability on three interrelated aspects of reproductive success: a change in mating system based on mate availability, consequent inbr...

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Autores principales: Auld, Josh R, Henkel, John F
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130452/
https://www.ncbi.nlm.nih.gov/pubmed/25165532
http://dx.doi.org/10.1002/ece3.1146
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author Auld, Josh R
Henkel, John F
author_facet Auld, Josh R
Henkel, John F
author_sort Auld, Josh R
collection PubMed
description Reproductive success is a critical fitness attribute that is directly influenced by resource availability. Here, we investigate the effects of diet-based resource availability on three interrelated aspects of reproductive success: a change in mating system based on mate availability, consequent inbreeding depression, and the deterioration of reproductive efficiency with age (senescence). We employed a factorial experimental design using 22 full-sib families of the hermaphroditic freshwater snail Physa acuta to explore these interactions. Individual snails were reared in one of two mate-availability treatments (isolated [selfing] or occasionally paired [outcrossing]) and one of two diet treatments (boiled lettuce or Spirulina, an algae that is rich in protein, vitamins, and minerals). Spirulina-fed snails initiated reproduction at a 13% earlier age and 7% larger size than lettuce-fed snails. Spirulina also resulted in a 30% reduction in the time delay before selfing. Compared to lettuce, a diet of Spirulina increased inbreeding depression by 52% for egg hatching rate and 64% for posthatching juvenile survival. Furthermore, Spirulina led to a 15-fold increase in the rate of reproductive senescence compared with a diet of lettuce. These transgenerational, interactive effects of diet on inbreeding depression and reproductive senescence are discussed in the context of diet-induced phenotypic plasticity.
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spelling pubmed-41304522014-08-27 Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail Auld, Josh R Henkel, John F Ecol Evol Original Research Reproductive success is a critical fitness attribute that is directly influenced by resource availability. Here, we investigate the effects of diet-based resource availability on three interrelated aspects of reproductive success: a change in mating system based on mate availability, consequent inbreeding depression, and the deterioration of reproductive efficiency with age (senescence). We employed a factorial experimental design using 22 full-sib families of the hermaphroditic freshwater snail Physa acuta to explore these interactions. Individual snails were reared in one of two mate-availability treatments (isolated [selfing] or occasionally paired [outcrossing]) and one of two diet treatments (boiled lettuce or Spirulina, an algae that is rich in protein, vitamins, and minerals). Spirulina-fed snails initiated reproduction at a 13% earlier age and 7% larger size than lettuce-fed snails. Spirulina also resulted in a 30% reduction in the time delay before selfing. Compared to lettuce, a diet of Spirulina increased inbreeding depression by 52% for egg hatching rate and 64% for posthatching juvenile survival. Furthermore, Spirulina led to a 15-fold increase in the rate of reproductive senescence compared with a diet of lettuce. These transgenerational, interactive effects of diet on inbreeding depression and reproductive senescence are discussed in the context of diet-induced phenotypic plasticity. Blackwell Publishing Ltd 2014-07 2014-06-22 /pmc/articles/PMC4130452/ /pubmed/25165532 http://dx.doi.org/10.1002/ece3.1146 Text en © 2014 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/3.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Auld, Josh R
Henkel, John F
Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
title Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
title_full Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
title_fullStr Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
title_full_unstemmed Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
title_short Diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
title_sort diet alters delayed selfing, inbreeding depression, and reproductive senescence in a freshwater snail
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4130452/
https://www.ncbi.nlm.nih.gov/pubmed/25165532
http://dx.doi.org/10.1002/ece3.1146
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