Comparative Gross Morphological Studies on the Os-Coxae of Crested Serpent Eagle (Spilornis cheela) and Brown Wood Owl (Strix leptogrammica) Keneisenuo1, Choudhary O.P.1,*, Arya R.S.2, Kalita P.C.1, Doley P.J.1, Rajkhowa T.K.2, Kalita A.1 1Department of Veterinary Anatomy and Histology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, Mizoram, India 2Department of Veterinary Pathology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, Mizoram, India *Corresponding author: OP Choudhary; Email: dr.om.choudhary@gmail.com
Online published on 19 July, 2019. Abstract The present study was conducted on os-coxae of crested serpent eagle and brown wood owl. The os-coxae consisted of three bones namely ilium, ischium and pubis. All the three bones were fused and the space between these bones was occupied by lumbo-sacral mass. Ventrally, the bones of os-coxae did not unite with each other leaving the pelvis open. Ilium was divided into pre-acetabular and post-acetabular parts. The dorsal surface of the pre-acetabular part was elongated and concave whereas post-acetabular part was small and convex in both the species. A very sharp and prominent crest was observed dorsally on either side of the lumbo-sacral mass. The renal fissure for the lodgement of the kidneys was observed in both species. The ischium was flat and somewhat triangular in shape. It formed a large sciatic foramen with the ilium and obturator foramen with pubis. The pubis was a thin rod-like elongated bone situated along the ventral border of the ischium and formed ischio-pubic incisures in brown wood owl but in crested serpent eagle, the pubis was completely fused with the ischium forming a flat plate-like structure. There was a small pectineal process at the anterior end of the pubis in the brown wood owl. The acetabulum was circular in outline and in the form of a foramen for articulation with the head of the femur. Top Keywords Os-coxae, crested serpent eagle, brown wood owl, obturator foramen, acetabulum. Top |