Assessment of the correlation between wing size and body weight in captive Culex quinquefasciatus

Introduction: Mass production of mosquitoes under laboratory conditions allows implementing methods to control vector mosquitoes. Colony development depends on mosquito size and weight. Body size can be estimated from its correlation with wing size, whereas weight is more difficult to determine. Our goal was to test whether wing size can predict the weight. Methods: We compared dry weight and wing centroid size of Culex quinquefasciatus reared at different temperatures and four diets. Results: Weight and wing size were strongly correlated. The diets did not influence wing size. Conclusions: Wing centroid size is a good predictor of Cx. quinquefasciatus body weight

Análisis descriptivo de la asimetría pélvica en una población asintomática / Descriptive analysis of pelvic asymmetry in an asymptomatic population

Introducción: La inclinación pélvica es evaluada clínicamente por su relación con patologías espinales. Pero hay pocas evidencias sobre la población asintomática para comparaciones. Objetivo: Analizar una población asintomática según las asimetrías pélvicas por fotogrametría. Material y métodos: 92 sujetos (18-35 años) fueron marcados en las espinas ilíacas anteriores y posteriores y fotografiados. El software Alcimage midió el ángulo de báscula pélvica. La normalidad probada por Kolmogorov; la prueba t y Wilcoxon para comprobar diferencias, la correlación medida por el coeficiente Pearson. Resultados: De los varones, 11.96% presentaran anteversión y 34.78% normalidad. De las mujeres, 38.04% anteversión y 15.22% normalidad. Los ángulos entre ilíacos para báscula bilateral no presentaron diferencia, pero hubo diferencia con predominancia de lado. Para báscula unilateral hubo diferencia entre ilíacos. Hubo buena correlación de predominancia versus anteversión y pobre para los ángulos de perfil. Los demás, débiles o sin significancia. Conclusión: La báscula no puede ser usada individualmente para caracterización de disfunción o patología pélvica.

Introduction: Pelvic tilt is clinically assessed based on its relationship with spinal conditions, but there is little evidence from the asymptomatic population for comparison purposes. Objective: To analyze an asymptomatic population focusing on pelvic asymmetries using photogrammetry. Material and methods: 92 subjects (18-35 years old) underwent marking of the anterior and posterior iliac spines and were photographed. Alcimage software was used to measure the pelvic tilt angle. Other tests included: the Kolmogorov normality test, t test, Wilcoxon test, and Pearson coefficient to measure the correlation. Results: 11.96% of males had anteversion and 34.78% normality; 38.04% of females had anteversion and 15.22% normality. Angles between iliacs for bilateral tilt showed no difference, but a difference was seen with the predominance of one side. For unilateral tilt a difference between iliacs was seen. Good correlation of predominance versus anteversion was observed, and correlation was poor for side angles. The rest showed a weak or non-significant correlation. Conclusion: Tilt cannot be used individually to characterize pelvic dysfunction or pathology.