Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.

Due to its influence on body size, timing of maturation is an important life-history trait in ectotherms with indeterminate growth. Comparison of patterns of growth and maturation within and between two populations (giant vs. normal sized) of nine-spined sticklebacks (Pungitius pungitius) in a breed...

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Autores principales:	Yukinori Shimada, Takahito Shikano, Anna Kuparinen, Abigél Gonda, Tuomas Leinonen, Juha Merilä
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cb8472ad07784023822a7541bf7f1622
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spelling	oai:doaj.org-article:cb8472ad07784023822a7541bf7f16222021-11-18T07:32:10ZQuantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.1932-620310.1371/journal.pone.0028859https://doaj.org/article/cb8472ad07784023822a7541bf7f16222011-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22194929/?tool=EBIhttps://doaj.org/toc/1932-6203Due to its influence on body size, timing of maturation is an important life-history trait in ectotherms with indeterminate growth. Comparison of patterns of growth and maturation within and between two populations (giant vs. normal sized) of nine-spined sticklebacks (Pungitius pungitius) in a breeding experiment revealed that the difference in mean adult body size between the populations is caused by differences in timing of maturation, and not by differential growth rates. The fish in small-sized population matured earlier than those from large-sized population, and maturation was accompanied by a reduction in growth rate in the small-sized population. Males matured earlier and at smaller size than females, and the fish that were immature at the end of the experiment were larger than those that had already matured. Throughout the experimental period, body size in both populations was heritable (h(2) = 0.10-0.64), as was the timing of maturation in the small-sized population (h(2) = 0.13-0.16). There was a significant positive genetic correlation between body size and timing of maturation at 140 DAH, but not earlier (at 80 or 110 DAH). Comparison of observed body size divergence between the populations revealed that Q(ST) exceeded F(ST) at older ages, indicating adaptive basis for the observed divergence. Hence, the results suggest that the body size differences within and between populations reflect heritable genetic differences in the timing of maturation, and that the observed body size divergence is adaptive.Yukinori ShimadaTakahito ShikanoAnna KuparinenAbigél GondaTuomas LeinonenJuha MeriläPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 12, p e28859 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yukinori Shimada Takahito Shikano Anna Kuparinen Abigél Gonda Tuomas Leinonen Juha Merilä Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.
description	Due to its influence on body size, timing of maturation is an important life-history trait in ectotherms with indeterminate growth. Comparison of patterns of growth and maturation within and between two populations (giant vs. normal sized) of nine-spined sticklebacks (Pungitius pungitius) in a breeding experiment revealed that the difference in mean adult body size between the populations is caused by differences in timing of maturation, and not by differential growth rates. The fish in small-sized population matured earlier than those from large-sized population, and maturation was accompanied by a reduction in growth rate in the small-sized population. Males matured earlier and at smaller size than females, and the fish that were immature at the end of the experiment were larger than those that had already matured. Throughout the experimental period, body size in both populations was heritable (h(2) = 0.10-0.64), as was the timing of maturation in the small-sized population (h(2) = 0.13-0.16). There was a significant positive genetic correlation between body size and timing of maturation at 140 DAH, but not earlier (at 80 or 110 DAH). Comparison of observed body size divergence between the populations revealed that Q(ST) exceeded F(ST) at older ages, indicating adaptive basis for the observed divergence. Hence, the results suggest that the body size differences within and between populations reflect heritable genetic differences in the timing of maturation, and that the observed body size divergence is adaptive.
format	article
author	Yukinori Shimada Takahito Shikano Anna Kuparinen Abigél Gonda Tuomas Leinonen Juha Merilä
author_facet	Yukinori Shimada Takahito Shikano Anna Kuparinen Abigél Gonda Tuomas Leinonen Juha Merilä
author_sort	Yukinori Shimada
title	Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.
title_short	Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.
title_full	Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.
title_fullStr	Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.
title_full_unstemmed	Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.
title_sort	quantitative genetics of body size and timing of maturation in two nine-spined stickleback (pungitius pungitius) populations.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/cb8472ad07784023822a7541bf7f1622
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Quantitative genetics of body size and timing of maturation in two nine-spined stickleback (Pungitius pungitius) populations.

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