Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae)
The South American species, Dichroplus elongatus, is polymorphic for B chromosomes and supernumerary segments in chromosome pairs M6 (SS6), S9 (SS9) and S10 (SS10). Both forms of supernumerary heterochromatin shape chiasma frequency and distribution and B chromosomes also affect male fertility. Here...
Guardado en:
| Autores principales: | , , |
|---|---|
| Publicado: |
2007
|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v20_n1_p249_Rosetti http://hdl.handle.net/20.500.12110/paper_1010061X_v20_n1_p249_Rosetti |
| Aporte de: |
| id |
paper:paper_1010061X_v20_n1_p249_Rosetti |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_1010061X_v20_n1_p249_Rosetti2023-06-08T15:59:28Z Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) Rosetti, Maria Eva Natalia Vilardi, Juan Cesar Remis, Maria Isabel B-chromosomes Body size related traits Fitness Orthoptera Supernumerary segment body size chromosome fitness grasshopper karyotype mating success morphometry polymorphism reproductive potential sexual selection analysis of variance animal Argentina article chromosome clutch size comparative study female genetic polymorphism genetic selection genetics grasshopper histology karyotyping limb male morphometrics phenotype physiology reproduction Analysis of Variance Animals Argentina Body Weights and Measures Chromosomes Clutch Size Extremities Female Grasshoppers Karyotyping Male Phenotype Polymorphism, Genetic Reproduction Selection (Genetics) South America Acrididae Dichroplus elongatus Orthoptera The South American species, Dichroplus elongatus, is polymorphic for B chromosomes and supernumerary segments in chromosome pairs M6 (SS6), S9 (SS9) and S10 (SS10). Both forms of supernumerary heterochromatin shape chiasma frequency and distribution and B chromosomes also affect male fertility. Here, we analysed the effects of these polymorphisms on morphometric traits (total, 3rd femur, 3rd tibia, thorax and tegmen lengths) and several adult fitness components, including male and female mating success, and female reproductive potential. B chromosomes tend to decrease, and SS6 segments to increase the body size of carriers. The analysis of reproductive potential suggested that B chromosome carrying females have higher numbers of embryos per clutch and ovarioles per ovary. The uni- and multivariate analysis of mating success revealed that sexual selection favours larger individuals of both sexes and males with standard karyotype. B chromosomes may have accumulation mechanisms, which involve preferential transmission of B chromosomes to germ cells or functional gametes. The maintenance of Bs might be explained by interactions among accumulation mechanisms and trade-offs between detrimental and favourable effects on different fitness components. © 2007 The Authors. 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. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v20_n1_p249_Rosetti http://hdl.handle.net/20.500.12110/paper_1010061X_v20_n1_p249_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 |
B-chromosomes Body size related traits Fitness Orthoptera Supernumerary segment body size chromosome fitness grasshopper karyotype mating success morphometry polymorphism reproductive potential sexual selection analysis of variance animal Argentina article chromosome clutch size comparative study female genetic polymorphism genetic selection genetics grasshopper histology karyotyping limb male morphometrics phenotype physiology reproduction Analysis of Variance Animals Argentina Body Weights and Measures Chromosomes Clutch Size Extremities Female Grasshoppers Karyotyping Male Phenotype Polymorphism, Genetic Reproduction Selection (Genetics) South America Acrididae Dichroplus elongatus Orthoptera |
| spellingShingle |
B-chromosomes Body size related traits Fitness Orthoptera Supernumerary segment body size chromosome fitness grasshopper karyotype mating success morphometry polymorphism reproductive potential sexual selection analysis of variance animal Argentina article chromosome clutch size comparative study female genetic polymorphism genetic selection genetics grasshopper histology karyotyping limb male morphometrics phenotype physiology reproduction Analysis of Variance Animals Argentina Body Weights and Measures Chromosomes Clutch Size Extremities Female Grasshoppers Karyotyping Male Phenotype Polymorphism, Genetic Reproduction Selection (Genetics) South America Acrididae Dichroplus elongatus Orthoptera Rosetti, Maria Eva Natalia Vilardi, Juan Cesar Remis, Maria Isabel Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) |
| topic_facet |
B-chromosomes Body size related traits Fitness Orthoptera Supernumerary segment body size chromosome fitness grasshopper karyotype mating success morphometry polymorphism reproductive potential sexual selection analysis of variance animal Argentina article chromosome clutch size comparative study female genetic polymorphism genetic selection genetics grasshopper histology karyotyping limb male morphometrics phenotype physiology reproduction Analysis of Variance Animals Argentina Body Weights and Measures Chromosomes Clutch Size Extremities Female Grasshoppers Karyotyping Male Phenotype Polymorphism, Genetic Reproduction Selection (Genetics) South America Acrididae Dichroplus elongatus Orthoptera |
| description |
The South American species, Dichroplus elongatus, is polymorphic for B chromosomes and supernumerary segments in chromosome pairs M6 (SS6), S9 (SS9) and S10 (SS10). Both forms of supernumerary heterochromatin shape chiasma frequency and distribution and B chromosomes also affect male fertility. Here, we analysed the effects of these polymorphisms on morphometric traits (total, 3rd femur, 3rd tibia, thorax and tegmen lengths) and several adult fitness components, including male and female mating success, and female reproductive potential. B chromosomes tend to decrease, and SS6 segments to increase the body size of carriers. The analysis of reproductive potential suggested that B chromosome carrying females have higher numbers of embryos per clutch and ovarioles per ovary. The uni- and multivariate analysis of mating success revealed that sexual selection favours larger individuals of both sexes and males with standard karyotype. B chromosomes may have accumulation mechanisms, which involve preferential transmission of B chromosomes to germ cells or functional gametes. The maintenance of Bs might be explained by interactions among accumulation mechanisms and trade-offs between detrimental and favourable effects on different fitness components. © 2007 The Authors. |
| author |
Rosetti, Maria Eva Natalia Vilardi, Juan Cesar Remis, Maria Isabel |
| author_facet |
Rosetti, Maria Eva Natalia Vilardi, Juan Cesar Remis, Maria Isabel |
| author_sort |
Rosetti, Maria Eva Natalia |
| title |
Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) |
| title_short |
Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) |
| title_full |
Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) |
| title_fullStr |
Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) |
| title_full_unstemmed |
Effects of B chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, Dichroplus elongatus (Acrididae) |
| title_sort |
effects of b chromosomes and supernumerary segments on morphometric traits and adult fitness components in the grasshopper, dichroplus elongatus (acrididae) |
| publishDate |
2007 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1010061X_v20_n1_p249_Rosetti http://hdl.handle.net/20.500.12110/paper_1010061X_v20_n1_p249_Rosetti |
| work_keys_str_mv |
AT rosettimariaevanatalia effectsofbchromosomesandsupernumerarysegmentsonmorphometrictraitsandadultfitnesscomponentsinthegrasshopperdichropluselongatusacrididae AT vilardijuancesar effectsofbchromosomesandsupernumerarysegmentsonmorphometrictraitsandadultfitnesscomponentsinthegrasshopperdichropluselongatusacrididae AT remismariaisabel effectsofbchromosomesandsupernumerarysegmentsonmorphometrictraitsandadultfitnesscomponentsinthegrasshopperdichropluselongatusacrididae |
| _version_ |
1768543334146506752 |