Abstract
ABSTRACT The common marmoset is an important Neotropical primate for biomedical research. With the intention of providing pelvimetric values that allow the selection of animals with better characteristics for reproduction, we studied the X-ray of the pelvis, in ventro-dorsal projection of 12 adult animals, six males and six females, belonging to the National Center of Primates - CENP. The measurements were made to right diagonal diameters (RDD), left diagonal diameter (LDD), bi-iliac middle diameter (BIMD), bi-iliac upper diameter (BIUD), bi-iliac lower diameter (BILD), sacrum-pubic diameter (SPD), and the input area of the pelvis (IAP), which were compared in relation to sex and bodily correlated with the biometrics. The results of the means and standard deviations regarding pelvimetry (cm) were: for the RDD in males of 1.91±0.14 and in the females of 2.05±0.08; LDD in males of 1.85±0.16 and in females of 2.03± 0.08; BIMD in males of 1.46±0.12 and in the females of 1.5±0; BIUD showed in males 1.3±0.1 and in females of 1.3±0.06; BILD in males of 1.35±0.15 and in females of 1.25±0.08; SPD in males of 1.68±0.09 and in females of 1.93±0.13; IAP in males of 1.9±0.26 and in the females of 2.23±0.13. It was concluded that the pelvis of Callithrix jacchus could be classified as dolicopelvic type, there is sexual dimorphism in relation to the pelvis of adult animals and that the bodily measurements have low positive correlation with pelvic measurements.
Highlights
The Neotropical primates have an important role regarding the phylogenetic proximity with the human being, which, due to their size and easy handling, are currently important models for biomedical research (Ward and Vallender, 2012)
The Callithrix jacchus, popularly known as common marmoset it is a specie of Brazilian origin that fits very well in captivity, where due to the lower maintenance cost in relation to other primates, facilitated management, biosafety and physiological peculiarities, the number of animal rooms dedicated to species and their use expanded in the areas of research has increased (Mansfield, 2003)
With the x-ray images visualized in a light box, the following measurements were performed using a transparent millimeter ruler: bi-iliac upper diameter (BIUD), bi-iliac lower diameter (BILD), bi-iliac middle diameter (BIMD), right diagonal diameter (RDD), left diagonal diameter (LDD) and sacrum-pubic diameter (SPD), in addition to the input area of the pelvis (IAP)
Summary
The Neotropical primates have an important role regarding the phylogenetic proximity with the human being, which, due to their size and easy handling, are currently important models for biomedical research (Ward and Vallender, 2012). The availability of these animals is certainly one of the main contributors to the rise of Brazil in the international community of biomedical research. Its use is directly related to reproduction, allowing the prediction or avoidance of difficulties at birth (Derivaux and Ectors, 1984)
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