Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits

Three population samples of Sinipta dalmani from Entre Ríos Province in Argentina polymorphic for the M4 inversion were analysed for five body-size-related traits: total body, tegmina, third femur, third tibia and thorax lengths. MANOVA and individual ANOVA revealed that there were significant diffe...

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Autor principal: Remis, M.I.
Formato: JOUR
Materias:
Grasshopper
Morphological variation
Pericentric inversion
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00221333_v76_n1_p25_Remis
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00221333_v76_n1_p25_Remis2023-10-03T14:27:29Z Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits Remis, M.I. Grasshopper Morphological variation Pericentric inversion Three population samples of Sinipta dalmani from Entre Ríos Province in Argentina polymorphic for the M4 inversion were analysed for five body-size-related traits: total body, tegmina, third femur, third tibia and thorax lengths. MANOVA and individual ANOVA revealed that there were significant differences between karyomorphs for total body and thorax lengths. The univariate analyses also revealed significant differences for tibia length, showing an important influence of correlated traits. The influence of the M4 inversion leads to a significant reduction of body size in the homozygotes for the M4 inversion. Comparison of mean values for tibia length through Scheffe's method revealed that (i) heterozygotes were intermediate between homozygotes, and (ii) there were significant differences between homozygotes. These results suggest that the differences between karyomorphs are largely additive. On the contrary, the heterozygote mean value for thorax length differs significantly from the average of the two homozygotes, showing that the dominance effects are mainly related with the differences between karyomorphs. This parametric comparison using total body length data revealed only marginally significant differences. Regression analysis of morphological traits on number of inverted chromosomes revealed that there was a dose effect only for third tibia length. 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_00221333_v76_n1_p25_Remis
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Grasshopper
Morphological variation
Pericentric inversion
spellingShingle Grasshopper
Morphological variation
Pericentric inversion
Remis, M.I.
Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits
topic_facet Grasshopper
Morphological variation
Pericentric inversion
description Three population samples of Sinipta dalmani from Entre Ríos Province in Argentina polymorphic for the M4 inversion were analysed for five body-size-related traits: total body, tegmina, third femur, third tibia and thorax lengths. MANOVA and individual ANOVA revealed that there were significant differences between karyomorphs for total body and thorax lengths. The univariate analyses also revealed significant differences for tibia length, showing an important influence of correlated traits. The influence of the M4 inversion leads to a significant reduction of body size in the homozygotes for the M4 inversion. Comparison of mean values for tibia length through Scheffe's method revealed that (i) heterozygotes were intermediate between homozygotes, and (ii) there were significant differences between homozygotes. These results suggest that the differences between karyomorphs are largely additive. On the contrary, the heterozygote mean value for thorax length differs significantly from the average of the two homozygotes, showing that the dominance effects are mainly related with the differences between karyomorphs. This parametric comparison using total body length data revealed only marginally significant differences. Regression analysis of morphological traits on number of inverted chromosomes revealed that there was a dose effect only for third tibia length.
format JOUR
author Remis, M.I.
author_facet Remis, M.I.
author_sort Remis, M.I.
title Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits
title_short Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits
title_full Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits
title_fullStr Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits
title_full_unstemmed Cytogenetic studies in Sinipta dalmani Stal (Orthoptera: Acrididae). III: Pericentric M4 inversion affecting morphological traits
title_sort cytogenetic studies in sinipta dalmani stal (orthoptera: acrididae). iii: pericentric m4 inversion affecting morphological traits
url http://hdl.handle.net/20.500.12110/paper_00221333_v76_n1_p25_Remis
work_keys_str_mv AT remismi cytogeneticstudiesinsiniptadalmanistalorthopteraacrididaeiiipericentricm4inversionaffectingmorphologicaltraits
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