Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea).
Abstract - Sexual dimorphism is a pronounced pattern of intraspecific variation in Lepidoptera. However, moths of the family Sphingidae (Lepidoptera: Bombycoidea) are considered exceptions to this rule. We used geometric morphometric techniques to detect shape and size sexual dimorphism in the fore and hindwings of seven hawkmoth species. The shape variables produced were then subjected to a discriminant analysis. The allometric effects were measured with a simple regression between the canonical variables and the centroid size. We also used the normalized residuals to assess the nonallometric component of shape variation with a t-test. The deformations in wing shape between sexes per species were assessed with a regression between the nonreduced shape variables and the residuals. We found sexual dimorphism in both wings in all analyzed species, and that the allometric effects were responsible for much of the wing shape variation between the sexes. However, when we removed the size effects, we observed shape sexual dimorphism. It is very common for females to be larger than males in Lepidoptera, so it is expected that the shape of structures such as wings suffers deformations in order to preserve their function. However, sources of variation other than allometry could be a reflection of different reproductive flight behavior (long flights in search for sexual mates in males, and flight in search for host plants in females).
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2016-02-03
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Subjects: | Dilophonotini, Geometric morphometric, Macroglossini, Philampelini., sexual selection., |
Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036005 |
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dig-alice-doc-10360052017-08-16T03:39:30Z Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). CAMARGO, W. R. F. de CAMARGO, N. F. de CORRÊA, D. do C. V. CAMARGO, A. J. A. de DINIZ, I. R. AMABILIO JOSE AIRES DE CAMARGO, CPAC. Dilophonotini Geometric morphometric Macroglossini Philampelini. sexual selection. Abstract - Sexual dimorphism is a pronounced pattern of intraspecific variation in Lepidoptera. However, moths of the family Sphingidae (Lepidoptera: Bombycoidea) are considered exceptions to this rule. We used geometric morphometric techniques to detect shape and size sexual dimorphism in the fore and hindwings of seven hawkmoth species. The shape variables produced were then subjected to a discriminant analysis. The allometric effects were measured with a simple regression between the canonical variables and the centroid size. We also used the normalized residuals to assess the nonallometric component of shape variation with a t-test. The deformations in wing shape between sexes per species were assessed with a regression between the nonreduced shape variables and the residuals. We found sexual dimorphism in both wings in all analyzed species, and that the allometric effects were responsible for much of the wing shape variation between the sexes. However, when we removed the size effects, we observed shape sexual dimorphism. It is very common for females to be larger than males in Lepidoptera, so it is expected that the shape of structures such as wings suffers deformations in order to preserve their function. However, sources of variation other than allometry could be a reflection of different reproductive flight behavior (long flights in search for sexual mates in males, and flight in search for host plants in females). 2016-02-03T11:11:11Z 2016-02-03T11:11:11Z 2016-02-03 2015 2016-02-26T11:11:11Z Separatas Journal of Insect Science, v. 15, n. 1, 2015. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036005 10.1093/jisesa/iev083 pt_BR por openAccess |
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Dilophonotini Geometric morphometric Macroglossini Philampelini. sexual selection. Dilophonotini Geometric morphometric Macroglossini Philampelini. sexual selection. |
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Dilophonotini Geometric morphometric Macroglossini Philampelini. sexual selection. Dilophonotini Geometric morphometric Macroglossini Philampelini. sexual selection. CAMARGO, W. R. F. de CAMARGO, N. F. de CORRÊA, D. do C. V. CAMARGO, A. J. A. de DINIZ, I. R. Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). |
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Abstract - Sexual dimorphism is a pronounced pattern of intraspecific variation in Lepidoptera. However, moths of the family Sphingidae (Lepidoptera: Bombycoidea) are considered exceptions to this rule. We used geometric morphometric techniques to detect shape and size sexual dimorphism in the fore and hindwings of seven hawkmoth species. The shape variables produced were then subjected to a discriminant analysis. The allometric effects were measured with a simple regression between the canonical variables and the centroid size. We also used the normalized residuals to assess the nonallometric component of shape variation with a t-test. The deformations in wing shape between sexes per species were assessed with a regression between the nonreduced shape variables and the residuals. We found sexual dimorphism in both wings in all analyzed species, and that the allometric effects were responsible for much of the wing shape variation between the sexes. However, when we removed the size effects, we observed shape sexual dimorphism. It is very common for females to be larger than males in Lepidoptera, so it is expected that the shape of structures such as wings suffers deformations in order to preserve their function. However, sources of variation other than allometry could be a reflection of different reproductive flight behavior (long flights in search for sexual mates in males, and flight in search for host plants in females). |
author2 |
AMABILIO JOSE AIRES DE CAMARGO, CPAC. |
author_facet |
AMABILIO JOSE AIRES DE CAMARGO, CPAC. CAMARGO, W. R. F. de CAMARGO, N. F. de CORRÊA, D. do C. V. CAMARGO, A. J. A. de DINIZ, I. R. |
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topic_facet |
Dilophonotini Geometric morphometric Macroglossini Philampelini. sexual selection. |
author |
CAMARGO, W. R. F. de CAMARGO, N. F. de CORRÊA, D. do C. V. CAMARGO, A. J. A. de DINIZ, I. R. |
author_sort |
CAMARGO, W. R. F. de |
title |
Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). |
title_short |
Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). |
title_full |
Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). |
title_fullStr |
Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). |
title_full_unstemmed |
Sexual dimorphism and allometric effects associated with the wing shape of seven moth species of Sphingidae (Lepidoptera: Bombycoidea). |
title_sort |
sexual dimorphism and allometric effects associated with the wing shape of seven moth species of sphingidae (lepidoptera: bombycoidea). |
publishDate |
2016-02-03 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036005 |
work_keys_str_mv |
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