ANKARA UNIVERSITESI VETERINER FAKULTESI DERGISI, cilt.54, sa.1, ss.1-5, 2007 (SCI-Expanded, TRDizin)
This study aimed to document the detailed features of the nasal cavity in Japanese quail (Coturnix coturnix japonica) by the use of ten mature quails. The heads of the birds were sectioned slightly paramedially and transversally in rostro-caudal sequence. Then, sections were placed in 0.1% methylene blue for 15 min followed by 50% and 70% ethyl alcohol series, respectively. The nasal cavity was formed rostrally by the nostrils which were two narrow longitudinal openings located at the upper part of the base of the beak. They were Nares perviae, a kind of open nares type. The choana possessed two openings communicating the nasal cavity with the oral cavity. The rostral nasal concha was present lying opposite the nostrils, showing, in transverse sections, C-shaped appearance in form with 6.23 +/- 0.1 mm long and 3.85 +/- 0.2 mm wide dorso-ventrally at its base. The middle nasal concha situated obliquely between the rostral nasal concha and the caudal nasal concha was the largest of all, being 8.32 +/- 0.21 mm long and 2.54 +/- 0.12 mm wide dorso-ventrally. In cross section, it exhibited a scroll-like structure with one-half turning ventro-laterally. The caudal nasal concha, the smallest one, resembled a hemisphere of 3.2 +/- 0.15 mm in diameter with its caudal border attaching to the olfactory region of the nasal cavity, and its cranial edge being free. The septal nasal concha was absent and the infraorbital sinus was highly developed in the Japanese quails examined.