Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)

The grasshopper Dichroplus elongatus Giglio Toss is an example of a species with widespread B-chromosome polymorphism. We detected in males considerable variation in adult size, and part of this variation is associated with the polymorphism for B-chromosomes that has a negative effect on male body s...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Rosetti, N., Vilardi, J.C., Remis, M.I.
Formato: JOUR
Materias:
Adult survival
B-chromosomes
Body-size related traits
Grasshoppers
body size
chromosome
grasshopper
karyotype
phenotype
polymorphism
survival
Acrididae
Dichroplus elongatus
Orthoptera
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00138746_v101_n5_p922_Rosetti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00138746_v101_n5_p922_Rosetti
record_format dspace
spelling todo:paper_00138746_v101_n5_p922_Rosetti2023-10-03T14:11:32Z Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae) Rosetti, N. Vilardi, J.C. Remis, M.I. Adult survival B-chromosomes Body-size related traits Grasshoppers body size chromosome grasshopper karyotype phenotype polymorphism survival Acrididae Dichroplus elongatus Orthoptera The grasshopper Dichroplus elongatus Giglio Toss is an example of a species with widespread B-chromosome polymorphism. We detected in males considerable variation in adult size, and part of this variation is associated with the polymorphism for B-chromosomes that has a negative effect on male body size. The analysis of fitness components revealed that B-carriers are negatively selected during mating, whereas B-carrier females exhibited higher fecundity than standard females. We recorded adult survival in relation to karyotype and body size, as measured by total, third tibia, third femur, thorax, and tegmen lengths. Our data showed directional phenotypic selection favoring large males and, as expected from the relationship between karyotype and phenotype, chromosome directional selection was detected favoring males with standard karyotype. In females, the effects of phenotype on survival showed an opposite tendency to that detected in males, i.e., small females outlive large females. Phenotypic selection in females may be explained by a trade-off between early and late fitness components. Our results suggest that B-chromosomes cause detrimental effects on body-size related traits that are selected for adult male survival. All available information on B-chromosomes in D. elongatus supports the hypothesis that their persistence in Argentinean populations depends on trade-offs between opposite selective effects. © 2008 Entomological Society of America. Fil:Rosetti, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vilardi, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Remis, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00138746_v101_n5_p922_Rosetti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Adult survival
B-chromosomes
Body-size related traits
Grasshoppers
body size
chromosome
grasshopper
karyotype
phenotype
polymorphism
survival
Acrididae
Dichroplus elongatus
Orthoptera
spellingShingle Adult survival
B-chromosomes
Body-size related traits
Grasshoppers
body size
chromosome
grasshopper
karyotype
phenotype
polymorphism
survival
Acrididae
Dichroplus elongatus
Orthoptera
Rosetti, N.
Vilardi, J.C.
Remis, M.I.
Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)
topic_facet Adult survival
B-chromosomes
Body-size related traits
Grasshoppers
body size
chromosome
grasshopper
karyotype
phenotype
polymorphism
survival
Acrididae
Dichroplus elongatus
Orthoptera
description The grasshopper Dichroplus elongatus Giglio Toss is an example of a species with widespread B-chromosome polymorphism. We detected in males considerable variation in adult size, and part of this variation is associated with the polymorphism for B-chromosomes that has a negative effect on male body size. The analysis of fitness components revealed that B-carriers are negatively selected during mating, whereas B-carrier females exhibited higher fecundity than standard females. We recorded adult survival in relation to karyotype and body size, as measured by total, third tibia, third femur, thorax, and tegmen lengths. Our data showed directional phenotypic selection favoring large males and, as expected from the relationship between karyotype and phenotype, chromosome directional selection was detected favoring males with standard karyotype. In females, the effects of phenotype on survival showed an opposite tendency to that detected in males, i.e., small females outlive large females. Phenotypic selection in females may be explained by a trade-off between early and late fitness components. Our results suggest that B-chromosomes cause detrimental effects on body-size related traits that are selected for adult male survival. All available information on B-chromosomes in D. elongatus supports the hypothesis that their persistence in Argentinean populations depends on trade-offs between opposite selective effects. © 2008 Entomological Society of America.
format JOUR
author Rosetti, N.
Vilardi, J.C.
Remis, M.I.
author_facet Rosetti, N.
Vilardi, J.C.
Remis, M.I.
author_sort Rosetti, N.
title Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)
title_short Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)
title_full Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)
title_fullStr Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)
title_full_unstemmed Effects of phenotype and B-chromosomes on adult survival in Dichroplus elongatus (Orthoptera: Acrididae)
title_sort effects of phenotype and b-chromosomes on adult survival in dichroplus elongatus (orthoptera: acrididae)
url http://hdl.handle.net/20.500.12110/paper_00138746_v101_n5_p922_Rosetti
work_keys_str_mv AT rosettin effectsofphenotypeandbchromosomesonadultsurvivalindichropluselongatusorthopteraacrididae
AT vilardijc effectsofphenotypeandbchromosomesonadultsurvivalindichropluselongatusorthopteraacrididae
AT remismi effectsofphenotypeandbchromosomesonadultsurvivalindichropluselongatusorthopteraacrididae
_version_ 1782030878267932672

Ejemplares similares