Measuring sexual selection in mammals

Autores
Cassini, Marcelo Hernan
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Sexual selection has been increasingly acknowledged as a major evolutionary driver in many taxa. An unequal mating success arising through competition over mates is the phenomenon that defines sexual selection. Therefore, demonstrating the presence of sexual selection requires that the number or quality of mates are spread less evenly than random processes would suggest. The objective of this study was to estimate the extent of this inequality in male mammals by reviewing studies that measure variance in genetic paternity. I found that few species showed high values of the standardised variances in male reproductive success, Im, and Nonacs´s B indices. These species differed from those with low or medium values in that, while in the latter the females breed solitary, in the former, they are grouped for reproduction, which possibly facilitates mate monopolization by males. Low levels of variance in reproductive success could be explained because most species of mammals breed solitary or due to high rates of extra-pair copulations by ‘subordinate’ males.
Fil: Cassini, Marcelo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina
Materia
Natural selection
Body size
Mammal
Polygyny
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/215893
Acceder
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spelling Measuring sexual selection in mammalsCassini, Marcelo HernanNatural selectionBody sizeMammalPolygynyhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Sexual selection has been increasingly acknowledged as a major evolutionary driver in many taxa. An unequal mating success arising through competition over mates is the phenomenon that defines sexual selection. Therefore, demonstrating the presence of sexual selection requires that the number or quality of mates are spread less evenly than random processes would suggest. The objective of this study was to estimate the extent of this inequality in male mammals by reviewing studies that measure variance in genetic paternity. I found that few species showed high values of the standardised variances in male reproductive success, Im, and Nonacs´s B indices. These species differed from those with low or medium values in that, while in the latter the females breed solitary, in the former, they are grouped for reproduction, which possibly facilitates mate monopolization by males. Low levels of variance in reproductive success could be explained because most species of mammals breed solitary or due to high rates of extra-pair copulations by ‘subordinate’ males.Fil: Cassini, Marcelo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaAssociazione Teriologica Italiana2022-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/215893Cassini, Marcelo Hernan; Measuring sexual selection in mammals; Associazione Teriologica Italiana; Hystrix; 33; 2; 6-2022; 123-1250394-19141825-5272CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.italian-journal-of-mammalogy.it/pdf-155198-91240?filename=Measuring%20sexual.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:10:11Zoai:ri.conicet.gov.ar:11336/215893instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:10:11.69CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Measuring sexual selection in mammals
title Measuring sexual selection in mammals
spellingShingle Measuring sexual selection in mammals
Cassini, Marcelo Hernan
Natural selection
Body size
Mammal
Polygyny
title_short Measuring sexual selection in mammals
title_full Measuring sexual selection in mammals
title_fullStr Measuring sexual selection in mammals
title_full_unstemmed Measuring sexual selection in mammals
title_sort Measuring sexual selection in mammals
dc.creator.none.fl_str_mv Cassini, Marcelo Hernan
author Cassini, Marcelo Hernan
author_facet Cassini, Marcelo Hernan
author_role author
dc.subject.none.fl_str_mv Natural selection
Body size
Mammal
Polygyny
topic Natural selection
Body size
Mammal
Polygyny
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Sexual selection has been increasingly acknowledged as a major evolutionary driver in many taxa. An unequal mating success arising through competition over mates is the phenomenon that defines sexual selection. Therefore, demonstrating the presence of sexual selection requires that the number or quality of mates are spread less evenly than random processes would suggest. The objective of this study was to estimate the extent of this inequality in male mammals by reviewing studies that measure variance in genetic paternity. I found that few species showed high values of the standardised variances in male reproductive success, Im, and Nonacs´s B indices. These species differed from those with low or medium values in that, while in the latter the females breed solitary, in the former, they are grouped for reproduction, which possibly facilitates mate monopolization by males. Low levels of variance in reproductive success could be explained because most species of mammals breed solitary or due to high rates of extra-pair copulations by ‘subordinate’ males.
Fil: Cassini, Marcelo Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina
description Sexual selection has been increasingly acknowledged as a major evolutionary driver in many taxa. An unequal mating success arising through competition over mates is the phenomenon that defines sexual selection. Therefore, demonstrating the presence of sexual selection requires that the number or quality of mates are spread less evenly than random processes would suggest. The objective of this study was to estimate the extent of this inequality in male mammals by reviewing studies that measure variance in genetic paternity. I found that few species showed high values of the standardised variances in male reproductive success, Im, and Nonacs´s B indices. These species differed from those with low or medium values in that, while in the latter the females breed solitary, in the former, they are grouped for reproduction, which possibly facilitates mate monopolization by males. Low levels of variance in reproductive success could be explained because most species of mammals breed solitary or due to high rates of extra-pair copulations by ‘subordinate’ males.
publishDate 2022
dc.date.none.fl_str_mv 2022-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/215893
Cassini, Marcelo Hernan; Measuring sexual selection in mammals; Associazione Teriologica Italiana; Hystrix; 33; 2; 6-2022; 123-125
0394-1914
1825-5272
CONICET Digital
CONICET
url http://hdl.handle.net/11336/215893
identifier_str_mv Cassini, Marcelo Hernan; Measuring sexual selection in mammals; Associazione Teriologica Italiana; Hystrix; 33; 2; 6-2022; 123-125
0394-1914
1825-5272
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.italian-journal-of-mammalogy.it/pdf-155198-91240?filename=Measuring%20sexual.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Associazione Teriologica Italiana
publisher.none.fl_str_mv Associazione Teriologica Italiana
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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