Abstract
Sexual dimorphism in flies has been evidenced in classical morphological characters, but little is known about the differentiation in wing geometry, a multivariate character highly controlled at the genetic level that influences the flight and impacts its life history and can be analyzed through geometric morphometrics. Here, we evaluated sexual dimorphism in the wing geometry of Musca domestica L., a cosmopolitan synanthropic fly. Specimens from Colombia were used for wing mounting, photography, and landmark-based geometric morphometric analysis. We found significant differences between male and female specimens in wing size and shape. Particularly, cross-validated classification based on wing shape resulted in high scores (90%) of correct sex attribution. The influence of wing geometry differences on the flight performance and life history in this species remains unknown.
Highlights
Sexual dimorphism in flies has been evidenced in classical morphological characters, but little is known about the differentiation in wing geometry, a multivariate character highly controlled at the genetic level that influences the flight and impacts its life history and can be analyzed through geometric morphometrics
We evaluated sexual dimorphism in the wing geometry of Musca domestica L., a cosmopolitan synanthropic fly
We found significant differences between male and female specimens in wing size and shape
Summary
Sexual dimorphism in flies has been evidenced in classical morphological characters, but little is known about the differentiation in wing geometry, a multivariate character highly controlled at the genetic level that influences the flight and impacts its life history and can be analyzed through geometric morphometrics. El dimorfismo sexual en moscas se ha evidenciado en caracteres morfológicos clásicos, pero poco se conoce de la diferenciación en la geometría alar, un carácter multivariado altamente controlado a nivel genético que influye en el vuelo e impacta su historia de vida, y que puede ser analizado mediante morfometría geométrica. La comparación del tamaño centroide y la conformación alar entre machos y hembras evidenció diferencias estadísticamente significativas.
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