Morphological Characterization of the Laryngeal Mound of the Egyptian Geese

Mohamed, Salma A.; Abdelsabour-Khalaf, Mohammed; Abdelhakeem, Fatma

doi:10.21608/avmj.2018.168681

Cited by 2 publications

(7 citation statements)

References 3 publications

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“…Our histological observations showed that the lining epithelium of the laryngeal mound was non-cornified stratified squamous epithelium till the laryngeal inlet. This result agrees with the reports of many published data in other different birds such as Egyptian geese [ 29 ], laughing dove and Japanese quail [ 22 ], duck [ 28 ], and turkey [ 3 , 34 ]. The latter author only showed the stratified squamous epithelium is keratinized, which is different according to the feeding habits of the birds.…”

Section: Discussionsupporting

confidence: 92%

“…Several works of studies supported our findings that the laryngeal mound is a raised structure located caudal to the lingual root [ 1 , 14 , 18 , 19 , 29 ]. The laryngeal mound of cattle egret was pear-shaped.…”

Section: Discussionsupporting

confidence: 87%

“…Moreover, the edges were smooth free from papillae as mentioned by the latter author in laughing dove. In contrast, each rim of the laryngeal mound is guards by sagittal row of caudally directed papillae as described by Mohamed et al [ 29 ] in Egyptian geese. Many conical papillae are bounding the glottis in raven and magpie [ 11 ].…”

Section: Discussionmentioning

confidence: 99%

“…Kabak et al [ 15 ] clarified two rows of the lateral papillae on either sides of laryngeal groove in Long-Legged Buzzard. Whilst, numerous irregular distributed papillae occupied the caudal part of the laryngeal mound in Egyptian geese [ 29 ]. Furthermore, Al-Ahmady [ 5 ] showed that the laryngeal mound of egret cattle is bounded caudally by a single row of backwardly and linearly arranged large sized pharyngeal papillae, four on each side.…”

Section: Discussionmentioning

confidence: 99%

“…The morphology and physiology of avian respiratory system differed distinctly from those of mammals [ 30 , 32 ]. The laryngeal mound performs both respiratory and digestive functions so a variety of scholars have studied the anatomy of the laryngeal mound in various avian species such as Egyptian geese [ 29 ], turkey [ 4 , 34 ], guinea fowl [ 13 ], Long-Legged Buzzard [ 15 ] and other birds [ 6 , 27 , 31 ]. We compared the nasal cavity of the aquatic and non-aquatic birds [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

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Morphological and ultrastructural features of the laryngeal mound of Egyptian Cattle Egret (Bubulcus ibis, Linnaeus, 1758)

Madkour¹,

Abdelsabour-Khalaf²

2022

BMC Zool

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Background According to our acknowledgment this is the first full anatomical description of the studied laryngeal mound of the Egyptian Cattle Egret (Bubulcus ibis, Linnaeus, 1758). This study was obtained with the aid of scanning electron microscopy (SEM) and histological techniques. Heads of ten healthy adult male Egyptian cattle egrets were used in this study. Results The laryngeal mound (Mons laryngealis) was a pear-shaped musculoskeletal elevation. It represented 20.55 and 67.87% of the total length of the oropharyngeal floor and the pharyngeal floor, respectively. By SEM view, the lateral aspect of the caudal third of the laryngeal mound had a serrated mucosal appearance, forming of 6–7 finger-like projections. Furthermore, the terminal part of the laryngeal mound (except the middle part) was bordered a transverse row of pyramidal-shaped papillae, which demarcated from the esophagus. Histologically, laryngeal salivary glands termed (cricoarytenoid salivary glands) of the laryngeal mound were simple tubular type and were arranged in one row within the lamina propria connective tissue close to the lamina epithelialis. Those glands were surrounded by abundant aggregation of lymphocytes, extended overlying the surface lining epithelium. The glottis within the laryngeal mound was supported by hyaline cartilages; dorsally by paired arytenoid cartilages, ventrolaterally by cricoid cartilage, and caudodorsally by procricoid cartilage. Two groups of intrinsic laryngeal skeletal muscles have connected the cartilages. The glandular epithelium of the laryngeal salivary glands and chondrocytes of the laryngeal cartilages showed strongly positive alcian blue reaction. Conclusions The laryngeal mound shows certain features that are unique as an adaptation to lifestyles and bird’s habitat.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphological and ultrastructural features of the laryngeal mound of Egyptian Cattle Egret (Bubulcus ibis, Linnaeus, 1758)

Madkour¹,

Abdelsabour-Khalaf²

2022

BMC Zool

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Comparative morphological study of the oropharyngeal floor of squabs and adult domestic pigeons (Columba liviadomestica)

Mahdy

2020

Microscopy Res & Technique

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The current study compared the morphological features of the oropharyngeal floor of squabs and adult domestic pigeons (Columba livia domestica). Samples from the oropharyngeal floor of both squabs and adult pigeons were collected directly after slaughtering. The collected samples were examined grossly, morphometrically, and by scanning electron microscopy (SEM). The lower beak had triangular shape with pointed rostral end. The tongue did not fill the entire oral floor in squabs as well as adult pigeons. The lingual apex of squabs had a small lingual nail while that of the adult pigeons had a well‐developed lingual nail. The lingual body was separated from the lingual root by a transverse papillary crest, which was “V” shaped in squabs but “U”‐shaped in adult pigeons. Filiform papillae were distributed on the dorsal surface of lingual apex, as well as, body, but were absent on the root. The lingual root presented fine elevations and low projections in squabs and adult pigeons, respectively. On the other hand, the tongue of adult pigeons had larger number of the lingual salivary glands openings compared to that of squabs. In addition, the edges of the glottis had numerous small projections in squabs bur presented large dome‐shaped papillae in adult pigeons. Moreover, adult pigeons had longer pharyngeal papillae at pharyngoesophageal junction than those of squabs. In conclusion, these variations suggest that adult pigeons adapted well to their diet, which might reflect higher efficiency of food prehension

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Morphological Characterization of the Laryngeal Mound of the Egyptian Geese

Cited by 2 publications

References 3 publications

Morphological and ultrastructural features of the laryngeal mound of Egyptian Cattle Egret (Bubulcus ibis, Linnaeus, 1758)

Morphological and ultrastructural features of the laryngeal mound of Egyptian Cattle Egret (Bubulcus ibis, Linnaeus, 1758)

Comparative morphological study of the oropharyngeal floor of squabs and adult domestic pigeons (Columba liviadomestica)

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