Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)

Leptysma argentina (Acrididae: Orthoptera) is polymorphic for a centric fusion between pairs 3 and 6 of its basic chromosomal complement. With the aim of carrying out an analysis of selection components in this species, male mating success, in relation to karyotype and three morphometric traits, was...

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Autores principales:	Colombo, P.C., Pensel, S.M., Remis, M.I.
Formato:	JOUR
Materias:	Centric fusion Leptysma argentina Morphometric variables Orthoptera Sexual selection morphology polymorphism reproductive success sexual selection Acrididae animal article body constitution chromosome cross breeding female femur genetic polymorphism genetics genotype histology karyotyping male metaphase sexual behavior sexual development thorax Animal Body Constitution Chromosomes Crosses, Genetic Female Femur Genotype Karyotyping Male Metaphase Polymorphism (Genetics) Sex Behavior, Animal Sex Characteristics Support, Non-U.S. Gov't Thorax
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0018067X_v87_n4_p480_Colombo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0018067X_v87_n4_p480_Colombo
record_format	dspace
spelling	todo:paper_0018067X_v87_n4_p480_Colombo2023-10-03T14:15:29Z Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera) Colombo, P.C. Pensel, S.M. Remis, M.I. Centric fusion Leptysma argentina Morphometric variables Orthoptera Sexual selection morphology polymorphism reproductive success sexual selection Acrididae Leptysma argentina Orthoptera animal article body constitution chromosome cross breeding female femur genetic polymorphism genetics genotype histology karyotyping male metaphase Orthoptera sexual behavior sexual development thorax Animal Body Constitution Chromosomes Crosses, Genetic Female Femur Genotype Karyotyping Male Metaphase Orthoptera Polymorphism (Genetics) Sex Behavior, Animal Sex Characteristics Support, Non-U.S. Gov't Thorax Leptysma argentina (Acrididae: Orthoptera) is polymorphic for a centric fusion between pairs 3 and 6 of its basic chromosomal complement. With the aim of carrying out an analysis of selection components in this species, male mating success, in relation to karyotype and three morphometric traits, was assessed by using experimental contests with four males and one female per mating cage. Karyotype was assessed in terms of fused chromosome 3/6 dosage and coded as '0', '1' and '2' for unfused homozygotes, heterozygotes and fusion homozygotes, respectively. The individual ANOVA showed significant differences between 'successful' and 'unsuccessful' males in all four measured characters. Fusion carriers showed a higher relative fitness. Since the phenotypic correlations among traits were significant, the selective effects were assessed by means of a multivariate analysis, which demonstrated that selection acted significantly on femur length only, selection on karyotype being indirect. Given that the fusion frequency has been constant since 1985, the presence of selective trade-offs cannot be ruled out. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0018067X_v87_n4_p480_Colombo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Centric fusion Leptysma argentina Morphometric variables Orthoptera Sexual selection morphology polymorphism reproductive success sexual selection Acrididae Leptysma argentina Orthoptera animal article body constitution chromosome cross breeding female femur genetic polymorphism genetics genotype histology karyotyping male metaphase Orthoptera sexual behavior sexual development thorax Animal Body Constitution Chromosomes Crosses, Genetic Female Femur Genotype Karyotyping Male Metaphase Orthoptera Polymorphism (Genetics) Sex Behavior, Animal Sex Characteristics Support, Non-U.S. Gov't Thorax
spellingShingle	Centric fusion Leptysma argentina Morphometric variables Orthoptera Sexual selection morphology polymorphism reproductive success sexual selection Acrididae Leptysma argentina Orthoptera animal article body constitution chromosome cross breeding female femur genetic polymorphism genetics genotype histology karyotyping male metaphase Orthoptera sexual behavior sexual development thorax Animal Body Constitution Chromosomes Crosses, Genetic Female Femur Genotype Karyotyping Male Metaphase Orthoptera Polymorphism (Genetics) Sex Behavior, Animal Sex Characteristics Support, Non-U.S. Gov't Thorax Colombo, P.C. Pensel, S.M. Remis, M.I. Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)
topic_facet	Centric fusion Leptysma argentina Morphometric variables Orthoptera Sexual selection morphology polymorphism reproductive success sexual selection Acrididae Leptysma argentina Orthoptera animal article body constitution chromosome cross breeding female femur genetic polymorphism genetics genotype histology karyotyping male metaphase Orthoptera sexual behavior sexual development thorax Animal Body Constitution Chromosomes Crosses, Genetic Female Femur Genotype Karyotyping Male Metaphase Orthoptera Polymorphism (Genetics) Sex Behavior, Animal Sex Characteristics Support, Non-U.S. Gov't Thorax
description	Leptysma argentina (Acrididae: Orthoptera) is polymorphic for a centric fusion between pairs 3 and 6 of its basic chromosomal complement. With the aim of carrying out an analysis of selection components in this species, male mating success, in relation to karyotype and three morphometric traits, was assessed by using experimental contests with four males and one female per mating cage. Karyotype was assessed in terms of fused chromosome 3/6 dosage and coded as '0', '1' and '2' for unfused homozygotes, heterozygotes and fusion homozygotes, respectively. The individual ANOVA showed significant differences between 'successful' and 'unsuccessful' males in all four measured characters. Fusion carriers showed a higher relative fitness. Since the phenotypic correlations among traits were significant, the selective effects were assessed by means of a multivariate analysis, which demonstrated that selection acted significantly on femur length only, selection on karyotype being indirect. Given that the fusion frequency has been constant since 1985, the presence of selective trade-offs cannot be ruled out.
format	JOUR
author	Colombo, P.C. Pensel, S.M. Remis, M.I.
author_facet	Colombo, P.C. Pensel, S.M. Remis, M.I.
author_sort	Colombo, P.C.
title	Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)
title_short	Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)
title_full	Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)
title_fullStr	Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)
title_full_unstemmed	Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)
title_sort	chromosomal polymorphism, morphological traits and male mating success in leptysma argentina (orthoptera)
url	http://hdl.handle.net/20.500.12110/paper_0018067X_v87_n4_p480_Colombo
work_keys_str_mv	AT colombopc chromosomalpolymorphismmorphologicaltraitsandmalematingsuccessinleptysmaargentinaorthoptera AT penselsm chromosomalpolymorphismmorphologicaltraitsandmalematingsuccessinleptysmaargentinaorthoptera AT remismi chromosomalpolymorphismmorphologicaltraitsandmalematingsuccessinleptysmaargentinaorthoptera
_version_	1807320046243938304

Chromosomal polymorphism, morphological traits and male mating success in Leptysma argentina (Orthoptera)

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