Diurnal variation in the distribution of lipid in the pectoralis muscle of the House sparrow (<i>Passer domesticus</i>)

Jones, Marilyn M.

doi:10.1111/j.1469-7998.1980.tb01479.x

Cited by 1 publication

(1 citation statement)

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“…In ducks ( Anseriformes ) and pigeons ( columbiformis ), the nuclei appeared elongated, whereas in chickens ( galliformis ) appeared oval and peripherally located under sarcolemma [ 13 , 14 ]. Despite there are several studies have evaluated the avian flight muscles [ 11 , 15 , 16 ], however, to the best of the authors’ knowledge, there is no information regarding the comparative evaluation of the flight muscles and bones in the domestic duck ( Anas platyrhynchos domesticus ) and the cattle egret ( Bubulcus ibis ).…”

Section: Introductionmentioning

confidence: 99%

Morphological, radiographic, three-dimensional computed tomographic, and histological features of the primary upstroke and downstroke muscles and bones in the domestic duck (Anas platyrhynchos domesticus) and the cattle egret (Bubulcus ibis, Linnaeus, 1758), reflecting the evolutionary transition towards the irreversible flightlessness

El-Ghazali,

Abdelbaset-Ismail,

Goda

et al. 2023

BMC Vet Res

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Background The purpose of this study was to explore whether domestication could lead to evolutionary changes towards flightlessness in the domestic duck (Anas platyrhynchos domesticus) compared to the cattle egret (Bubulcus ibis) as a nonflying and flying biological model, respectively. Bones of the pectoral girdle (scapula, clavicle, and coracoid) and the foramen triosseum were comparatively assessed using anatomical, radiographic, and 3D computed tomographic (CT) studies. Additionally, the muscles pectoralis and the supracoracoideus were histologically and immunohistochemically assessed. Results Among the differences observed, radiographically, the distance between the paired clavicles was significantly wider (p < 0.05) in the domestic duck (mean ± SD 1.43 ± 0.23 cm) compared with the cattle egret (0.96 ± 0.13 cm). Unlike cattle egrets, there was no connection between the sternum and the hypocladium of furcula in domestic ducks. The scapula, clavicle, coracoid, sternum, and humerus were considerably longer in domestic ducks than in cattle egrets. The foramen triosseum appeared significantly (p < 0.01) wider in domestic ducks (0.7 ± 1.17 cm) compared to cattle egrets (0.49 ± 0.03 cm). Histologically, compared to cattle egrets, the muscle fibers in domestic ducks were loosely connected and contained fewer nuclei and perimysial/endomysial spaces. A higher myoglobin expression was evident in cattle egrets compared with domestic ducks. Conclusions Results of this study indicate that the bones and muscles of the pectoral girdle generally show specific morphological and structural changes reflective of the loss of prerequisites associated with flight behavior in domestic ducks due to domestication effects compared to cattle egrets.

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