Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)
We review the effects of abiotic factors on body size in two grasshopper species with large geographical distributions: Dichroplus pratensis and D. vittatus, inhabiting Argentina in diverse natural habitats. Geographical spans for both species provide an opportunity to study the effects of changes i...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Psyche: A Journal of Entomology |
| Online Access: | http://dx.doi.org/10.1155/2012/863947 |
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| author | Claudio J. Bidau Carolina I. Miño Elio R. Castillo Dardo A. Martí |
| author_facet | Claudio J. Bidau Carolina I. Miño Elio R. Castillo Dardo A. Martí |
| author_sort | Claudio J. Bidau |
| collection | DOAJ |
| description | We review the effects of abiotic factors on body size in two grasshopper species with large geographical distributions: Dichroplus pratensis and D. vittatus, inhabiting Argentina in diverse natural habitats. Geographical spans for both species provide an opportunity to study the effects of changes in abiotic factors on body size. The analyses of body size distribution in both species revealed a converse Bergmannian pattern: body size is positively correlated with latitude, altitude, and seasonality that influences time available for development and growth. Allen’s rule is also inverted. Morphological variability increases towards the ends of the Bergmannian clines and, in D. pratensis, is related with a central-marginal distribution of chromosomal variants that influence recombination. The converse Bergmannian patterns influence sexual size dimorphism in both species but in different fashions. Body size variation at a microspatial scale in D. pratensis is extremely sensitive to microclimatic clines. We finally compare our results with those for other Orthopteran species. |
| format | Article |
| id | doaj-art-12d28e2f9f064d148df27ccec1c28245 |
| institution | Kabale University |
| issn | 0033-2615 1687-7438 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Psyche: A Journal of Entomology |
| spelling | doaj-art-12d28e2f9f064d148df27ccec1c282452025-02-03T05:48:15ZengWileyPsyche: A Journal of Entomology0033-26151687-74382012-01-01201210.1155/2012/863947863947Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae)Claudio J. Bidau0Carolina I. Miño1Elio R. Castillo2Dardo A. Martí3Departamento de Ingeniería en Biotecnología, Universidad Nacional de Río Negro, Sede Alto Valle, Subsede Villa Regina, Tacuarí 669, 8336 Villa Regina, ArgentinaDepartamento de Genética e Evolução, Universidade Federal de São Carlos, Rodovia Washington Luís SP-310 km 235, 13565-905 São Carlos, SP, BrazilLaboratorio de Genética Evolutiva, Universidad Nacional de Misiones, Félix de Azara 1552, 3300 Posadas, ArgentinaLaboratorio de Genética Evolutiva, Universidad Nacional de Misiones, Félix de Azara 1552, 3300 Posadas, ArgentinaWe review the effects of abiotic factors on body size in two grasshopper species with large geographical distributions: Dichroplus pratensis and D. vittatus, inhabiting Argentina in diverse natural habitats. Geographical spans for both species provide an opportunity to study the effects of changes in abiotic factors on body size. The analyses of body size distribution in both species revealed a converse Bergmannian pattern: body size is positively correlated with latitude, altitude, and seasonality that influences time available for development and growth. Allen’s rule is also inverted. Morphological variability increases towards the ends of the Bergmannian clines and, in D. pratensis, is related with a central-marginal distribution of chromosomal variants that influence recombination. The converse Bergmannian patterns influence sexual size dimorphism in both species but in different fashions. Body size variation at a microspatial scale in D. pratensis is extremely sensitive to microclimatic clines. We finally compare our results with those for other Orthopteran species.http://dx.doi.org/10.1155/2012/863947 |
| spellingShingle | Claudio J. Bidau Carolina I. Miño Elio R. Castillo Dardo A. Martí Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae) Psyche: A Journal of Entomology |
| title | Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae) |
| title_full | Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae) |
| title_fullStr | Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae) |
| title_full_unstemmed | Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae) |
| title_short | Effects of Abiotic Factors on the Geographic Distribution of Body Size Variation and Chromosomal Polymorphisms in Two Neotropical Grasshopper Species (Dichroplus: Melanoplinae: Acrididae) |
| title_sort | effects of abiotic factors on the geographic distribution of body size variation and chromosomal polymorphisms in two neotropical grasshopper species dichroplus melanoplinae acrididae |
| url | http://dx.doi.org/10.1155/2012/863947 |
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