Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation

Kin selection on one hand, and gamete interactions in post-ejaculatory sexual selection on the other are two major research themes that have risen to prominence over the past half century and have simultaneously developed into central fields of research in evolutionary biology. There is a natural co...

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Main Authors: Lauri Myllymaa, Jussi Lehtonen
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-05-01
Series:Frontiers in Ecology and Evolution
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fevo.2023.1112433/full
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author Lauri Myllymaa
Jussi Lehtonen
author_facet Lauri Myllymaa
Jussi Lehtonen
author_sort Lauri Myllymaa
collection DOAJ
description Kin selection on one hand, and gamete interactions in post-ejaculatory sexual selection on the other are two major research themes that have risen to prominence over the past half century and have simultaneously developed into central fields of research in evolutionary biology. There is a natural connection between the two: when gametes interact with each other, very commonly many of them originate from the same parent and are thus siblings. For example, sperm competition will almost always involve competition between sibling gametes even if the interacting parents are not related to each other. If parents are related to each other, the relatedness between gametes increases further. Here we discuss the relation between kin selection on one hand, and gamete competition, gamete limitation, local gamete competition, and the evolution of sex allocation on the other. To illustrate these topics, we present a novel model on sex allocation in simultaneous hermaphrodites under sperm limitation and limited, costly dispersal. We find that sperm limitation can significantly increase allocation into male function, but limited dispersal (and thus increased relatedness) does not alter sex allocation regardless of the presence of sperm limitation.
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spelling doaj.art-46f43abb180e474e836de5251a68d9ba2023-05-05T05:16:22ZengFrontiers Media S.A.Frontiers in Ecology and Evolution2296-701X2023-05-011110.3389/fevo.2023.11124331112433Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocationLauri MyllymaaJussi LehtonenKin selection on one hand, and gamete interactions in post-ejaculatory sexual selection on the other are two major research themes that have risen to prominence over the past half century and have simultaneously developed into central fields of research in evolutionary biology. There is a natural connection between the two: when gametes interact with each other, very commonly many of them originate from the same parent and are thus siblings. For example, sperm competition will almost always involve competition between sibling gametes even if the interacting parents are not related to each other. If parents are related to each other, the relatedness between gametes increases further. Here we discuss the relation between kin selection on one hand, and gamete competition, gamete limitation, local gamete competition, and the evolution of sex allocation on the other. To illustrate these topics, we present a novel model on sex allocation in simultaneous hermaphrodites under sperm limitation and limited, costly dispersal. We find that sperm limitation can significantly increase allocation into male function, but limited dispersal (and thus increased relatedness) does not alter sex allocation regardless of the presence of sperm limitation.https://www.frontiersin.org/articles/10.3389/fevo.2023.1112433/fullkin selectionsperm competition and limitationsex allocationsimultaneous hermaphroditesrelatednesspost-copulatory sexual selection
spellingShingle Lauri Myllymaa
Jussi Lehtonen
Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation
Frontiers in Ecology and Evolution
kin selection
sperm competition and limitation
sex allocation
simultaneous hermaphrodites
relatedness
post-copulatory sexual selection
title Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation
title_full Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation
title_fullStr Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation
title_full_unstemmed Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation
title_short Kin selection in interactions between gametes: Gamete competition, gamete limitation, and sex allocation
title_sort kin selection in interactions between gametes gamete competition gamete limitation and sex allocation
topic kin selection
sperm competition and limitation
sex allocation
simultaneous hermaphrodites
relatedness
post-copulatory sexual selection
url https://www.frontiersin.org/articles/10.3389/fevo.2023.1112433/full
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