Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera)
Trimerotropis pallidipennis is a New World grasshopper whose South-American populations are polymorphic for six pericentric inversions. Previous work has demonstrated that the frequences of these inversions correlate with climatic variables, and hence a possible adaptive pattern was put forward. In...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v114_n3_p247_Colombo http://hdl.handle.net/20.500.12110/paper_00166707_v114_n3_p247_Colombo |
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paper:paper_00166707_v114_n3_p247_Colombo2023-06-08T14:38:26Z Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) Colombo, Pablo Cesar Morphometric variables Orthoptera Pericentric inversions Trimerotropis pallidipennis analysis of variance animal article chromosome inversion genetic polymorphism genetics histology male multivariate analysis Orthoptera phenotype Analysis of Variance Animals Inversion, Chromosome Male Multivariate Analysis Orthoptera Phenotype Polymorphism, Genetic Animalia Insecta Orthoptera Trimerotropis Trimerotropis pallidipennis is a New World grasshopper whose South-American populations are polymorphic for six pericentric inversions. Previous work has demonstrated that the frequences of these inversions correlate with climatic variables, and hence a possible adaptive pattern was put forward. In the present work we analysed a sample of a natural population of T. pallidipennis to ascertain whether the chromosomal inversions have effects on exophenotypes. Two hundred and sixty-eight males coming from a natural population at Uspallata, Mendoza Province, Argentina were analysed, and it was observed that most inversions had significant effects on phenotypes. Furthermore, some body size-related characteristics (such as tegmina length) were correlated with the number of inversions. Individuals from populations at higher altitude or latitude (i.e., at lower minimum temperatures), along with higher frequencies of standard sequences, were significantly smaller, and this coherence between interpopulational with intrapopulational results may indicate that the diminished body size of the standard sequence-carrying individuals may be caused by an effect of the inversions, or genes within the inversions, on body size. We finally put forward the hypothesis that reduced body size in a context of reduced minimum temperature may be a response to shortened development season, and so smaller individuals may be advantageous. Fil:Colombo, P.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v114_n3_p247_Colombo http://hdl.handle.net/20.500.12110/paper_00166707_v114_n3_p247_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 |
Morphometric variables Orthoptera Pericentric inversions Trimerotropis pallidipennis analysis of variance animal article chromosome inversion genetic polymorphism genetics histology male multivariate analysis Orthoptera phenotype Analysis of Variance Animals Inversion, Chromosome Male Multivariate Analysis Orthoptera Phenotype Polymorphism, Genetic Animalia Insecta Orthoptera Trimerotropis |
| spellingShingle |
Morphometric variables Orthoptera Pericentric inversions Trimerotropis pallidipennis analysis of variance animal article chromosome inversion genetic polymorphism genetics histology male multivariate analysis Orthoptera phenotype Analysis of Variance Animals Inversion, Chromosome Male Multivariate Analysis Orthoptera Phenotype Polymorphism, Genetic Animalia Insecta Orthoptera Trimerotropis Colombo, Pablo Cesar Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) |
| topic_facet |
Morphometric variables Orthoptera Pericentric inversions Trimerotropis pallidipennis analysis of variance animal article chromosome inversion genetic polymorphism genetics histology male multivariate analysis Orthoptera phenotype Analysis of Variance Animals Inversion, Chromosome Male Multivariate Analysis Orthoptera Phenotype Polymorphism, Genetic Animalia Insecta Orthoptera Trimerotropis |
| description |
Trimerotropis pallidipennis is a New World grasshopper whose South-American populations are polymorphic for six pericentric inversions. Previous work has demonstrated that the frequences of these inversions correlate with climatic variables, and hence a possible adaptive pattern was put forward. In the present work we analysed a sample of a natural population of T. pallidipennis to ascertain whether the chromosomal inversions have effects on exophenotypes. Two hundred and sixty-eight males coming from a natural population at Uspallata, Mendoza Province, Argentina were analysed, and it was observed that most inversions had significant effects on phenotypes. Furthermore, some body size-related characteristics (such as tegmina length) were correlated with the number of inversions. Individuals from populations at higher altitude or latitude (i.e., at lower minimum temperatures), along with higher frequencies of standard sequences, were significantly smaller, and this coherence between interpopulational with intrapopulational results may indicate that the diminished body size of the standard sequence-carrying individuals may be caused by an effect of the inversions, or genes within the inversions, on body size. We finally put forward the hypothesis that reduced body size in a context of reduced minimum temperature may be a response to shortened development season, and so smaller individuals may be advantageous. |
| author |
Colombo, Pablo Cesar |
| author_facet |
Colombo, Pablo Cesar |
| author_sort |
Colombo, Pablo Cesar |
| title |
Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) |
| title_short |
Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) |
| title_full |
Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) |
| title_fullStr |
Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) |
| title_full_unstemmed |
Chromosome inversion polymorphisms influence morphological traits in Trimerotropis pallidipennis (Orthoptera) |
| title_sort |
chromosome inversion polymorphisms influence morphological traits in trimerotropis pallidipennis (orthoptera) |
| publishDate |
2002 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v114_n3_p247_Colombo http://hdl.handle.net/20.500.12110/paper_00166707_v114_n3_p247_Colombo |
| work_keys_str_mv |
AT colombopablocesar chromosomeinversionpolymorphismsinfluencemorphologicaltraitsintrimerotropispallidipennisorthoptera |
| _version_ |
1768544023769776128 |