Sex determination in budgerigars using radiographic pelvimetry

Abstract

BackgroundThe purpose of this study was to assess the pelvimetric values obtained from radiographic pelvis images of budgerigars in terms of sexual dimorphism. The objectives included determining linear osteometric and angle measurements of the pelvis, as well as calculating the length‐to‐width ratios among different pelvimetric measurements. Additionally, the study aimed to reveal the correlations between age and body weight with both the pelvimetric measurements and ratio measurements in these animals.MethodsIn this study, measurements of linear distance, angle and length‐to‐width ratios were obtained from ventrodorsal images of the pelvis in a sample of 60 budgerigars, consisting of 30 males and 30 females. Subsequently, the statistical analysis of the obtained measurement values was performed.ResultsWhen analysing the morphometric measurement values based on sex, it was observed that all linear measurements (L1, L2, L3, L4, L5, L6, L7, L8, L9, L10 and L11) were higher in males, whereas the angle measurements (A1, LA2 and RA2) were found to be significantly greater in females (p < 0.05). Additionally, both male and female budgerigars exhibited a greater pre‐acetabular length of the ilium compared to the post‐acetabular length. Moreover, there were mostly positive significant correlations between age and body weight with the pelvic measurement values in both sexes (p < 0.05).ConclusionsThe obtained biometric measurement values from pelvimetric X‐ray images in budgerigars were analysed to assess sexual dimorphism. Furthermore, this study presents fundamental morphometric data that can be valuable for clinical, taxonomic, phylogenetic, ornithological, allometric and characterization studies of budgerigars.

Comparative Investigation of Tongue and Esophagus Morphometry in Swiss Albino and Balb-c Mice

“…In the present day, house mice (Mus musculus) are an excellent mammalian model that is widely used to study the characteristics and diseases of various pathological conditions that disrupt the anatomical structure in systems such as immunity, metabolism, development, and neurological disorders (Morse, 2007;Phifer-Rixey & Nachman, 2015). Moreover, in recent years, various studies have focused on revealing the morphometric characteristics of various anatomical structures, particularly in pet animals, exotic species, as well as in experimental animals (Koca et al, 2023a, 2023b, Yilmaz et al, 2023, Yilmaz et al, 2024.…”