Posthatching developmental studies on the tongue and laryngeal entrance of the common quail (Coturnix coturnix, Linnaeus, 1758) in different five age‐stages

Abstract

The present study represents the first trial to characterize the ultrastructural of five ages of Coturnix coturnix. Lingual nail had membrane that differ in number among five studied ages. Filiform papillary system had four caudally directed papillae types; small (apex, rostral, and median part of body in 1 day, body in 10 and 20 days), long (apex and rostral part of body in 10 days, tip and two lateral area in 20, 30, 40-days, lateral border in 1 and 10 days, two lateral area of body in 40 days), broad (median area of body in 20, 30, 40 days). Scales on the ventral surface of apex, mound. Lingual sulci on the apex and body without reaching tip in 10, 20, 30, 40-days while, in 1 day the body had ridge caudally. Three papillae on posterior part of lateral border of body. W-shape crest had papillae on its median part while, its lateral part had two giant papillae on each side. Dorsal giant papillae terminated caudally with six processes, while ventral papillae terminated caudally with three processes. The unique root appearance, at 1 day had four papillae while in 10-day, it had one papilla however in 20, 30, 40 days, it had T-shaped ridge. Mound had one longitudinal row on each side of cleft and two transverse papillary rows at its caudal border and additional row at 40-days. Our findings exposed unique structural and functional characterizations of lingual and laryngeal entrance that reflected with feeding behavior.

Ultrastructural and histological descriptions of the oropharyngeal cavity of the rock pigeon Columba livia dakhlae with special refer to its adaptive dietary adaptations

“…The present SEM observations of the lingual apex noted that it was covered rostrally and laterally with numerous caudally directed scales-like papillae, similar to those observed by Abumandour and El-Bakary (2019) and Abumandour et al (2021). Meanwhile, Abumandour and El-Bakary (2017b) in the common kestrel and Emura et al (2009) in the Japanese pygmy woodpecker reported that there were numerous rostral long needle-like processes on the lingual tip.…”

“…The filiform appearance on the avian tongue was not a common structure as reported in all animal species (Abumandour, 2014b;Abumandour & El-Bakary, 2013;El-Bakary & Abumandour, 2017;El-Mansi, Al-Kahtani, & Abumandour, 2019;Massoud & Abumandour, 2019). The present SEM observations noted that the dorsal surface of the lingual apex and body was covered with numerous caudally directed scales-like filiform papillae and with high magnification, the scales-like filiform papillae took the leaf-like appearance with little microgrooves and numerous micro-ridges, similar to that noted by Abumandour (2018), while these papillae were observed on the entire dorsal lingual surface of the common quail Coturnix coturnix (Abumandour et al, 2021). The presence of the filiform-like papillae was previously observed in several bird species as in the Egyptian laughing dove, common kestrel and Hume's tawny owl, house sparrow, and Eurasian Coot (Abumandour, 2018;Abumandour & El-Bakary, 2017a;Abumandour & El-Bakary, 2017b;Abumandour & El-Bakary, 2019) but, the more fantastic lingual appearance was described in the penguins (Kobayashi, Kumakura, Yoshimura, Inatomi, & Asami, 1998) that the whole dorsal surface was covered with numerous caudal oriented mechanical filiform-like papillae.…”

“…The current investigations noted that the tongue of the rock pigeon had a pointed apex, similar to that described by Abumandour and Gewaily (2019), Dehkordi, Parchami, and Bahadoran (2010), El-Mansi et al ( 2020), and Iwasaki and Kobayashi (1986). There was numerous appearance of the lingual apex as noted in many anatomical published data; the oval lingual apex appeared in Hume's tawny owl (Abumandour & El-Bakary, 2017b), while the round lingual apex appeared in the goose, duck, quail, and Egyptian laughing dove (Abumandour et al, 2021;Abumandour & El-Bakary, 2019;Jackowiak, Skieresz-szewczyk, Godynicki, Iwasaki, & Meyer, 2011;Parchami et al, 2010a). Furthermore, the bifurcated lingual apex appeared in numerous different birds as described in magpie, falcon, Eurasian Hobby, house sparrow, and seagull (Abumandour, 2014a;Abumandour, 2018;Abumandour & El-Bakary, 2017b;Onuk et al, 2013).…”

“…Functionally, the avian oropharyngeal cavity was the most specialized anatomical structure related to the different ecological conditions either the bird adapted to life on the land, the air, and on the different aquatic media or the place surrounding the aquatic media (Abumandour, 2018;Abumandour et al, 2021;Abumandour & Gewaily, 2019;Crole & Soley, 2010a;El-Mansi et al, 2020). The intraoropharyngeal cavity structured as the tongue, laryngeal mound, and palate are adapted according to the avian feeding habits and habitats (Abumandour, 2018;Abumandour & El-Bakary, 2017b;Al-Ahmady, 2016;Gewaily & Abumandour, 2020;Onuk et al, 2013).…”

“…The more interest was focused on the morphological lingual adaptations with the different environmental conditions and their role in the different feeding strategies such as the capturing and manipulating of the food particles (Abumandour et al, 2021;Abumandour & El-Bakary, 2017b;Al-Ahmady, 2016;Haddad, Abdel-Megeid, & Abumandour, 2021;Jackowiak, Andrzejewski, & Godynicki, 2006;Onuk, Tutuncue, Kabak, & Alan, 2013). However, the laryngeal region had little attention except some published data (Abumandour et al, 2021;Abumandour & El-Bakary, 2017b;El-Mansi et al, 2020). Also, the previously published articles concerned with the characteristic features of the palate were scanty except for some published data (Abumandour, 2018;.…”