Comparative anatomical studies on the glandular stomach of the rock pigeon (Columba livia targia) and the Egyptian laughing dove (Streptopelia senegalensis aegyptiaca)

Abstract

The rock pigeon (RP) and the laughing dove (LD) are common and widely distributed species in African countries, including Egypt. The present work was carried out to characterize the comparative features of the glandular stomach (proventriculus) in these two birds, which share diets and habitats. In both species, the proventriculus is an elongated spindle obliquely situated in the cranial two‐thirds of the body cavity. The length and weight of the proventriculus in the RP were about one and half times greater than that of the LD. Histologically, the proventricular wall generally consisted of the mucosa (thickest), submucosa, muscular and serosa layers. The proventricular glands occupied most of the wall of the proventriculus within the lamina propria of the mucosa. The glands are tubuloalveolar in type, consist of variable shaped lobules and are more condensed in LD than in RP. At the proventricular‐gizzard junction (PGJ), the proventricular glands were observed external to the tubular glands of the gizzard in the RP, whereas in LD, these glands end abruptly and are separated from the tubular glands of the gizzard by a short distance. A scanning electron microscopy (SEM) of the proventricular lumen in RP revealed that the openings of the proventricular glands have an irregular outline surrounded by concentrically arranged mucosal folds that resemble a rosette shape. In the LD, these openings have a regular outline surrounded by thinner, widely spaced mucosal folds. To our knowledge, these results identified the structure of the proventriculus in RP and LD for the first time.

A focus on the gross morphological and ultrastructural characteristics of the oesophagus and stomach of Eurasian common moorhen (Gallinula chloropus chloropus, Linnaeus 1758)

“…Whereas, El Nahla, El Mahdy, and Basha (2011) in cattle egret reported that the stomach was composed of cranial proventriculus, caudal ventriculus, and small pyloric part. Between the proventriculus and the gizzard the isthmus was found, coinciding with Hanafy et al (2020) in Garganey, Madkour and Mohamed (2019) in the rock pigeon and the Egyptian laughing dove, Zaher, El‐Ghareeb, Hamdi, and AbuAmod (2012) in coturnix coturnix , Hassouna (2001) in goose, turkey, sparrow, kestrel, hoopoe, owl, and darter, while Bezuidenhout (1986) in ostrich, Ibrahim (1992) in jackdaw and heron, El Bakary (1993) in purple, El‐Ghazali (2008) in Ibis, El Nahla et al (2011) in cattle egret, Abumandour (2014) in Eurasian hobby reported its absence.…”

“…The present investigation declared that the stomach of the Eurasian common moorhen consisted of proventriculus and gizzard. This coincides with Dursun (2002) in the domestic birds, Hanafy et al (2020) in Garganey, Ince, Pazvant, and Kahvecioglu (2010) in sea gull, and Madkour and Mohamed (2019) in the rock pigeon and the Egyptian laughing dove. Whereas, El Nahla, El Mahdy, and Basha (2011) in cattle egret reported that the stomach was composed of cranial proventriculus, caudal ventriculus, and small pyloric part.…”

“…The shape of the proventriculus was fusiform like that reported by Hanafy et al (2020) in Garganey, Madkour and Mohamed (2019) in rock pigeon and Egyptian dove, El‐Ghazali (2008) in duck, Abumandour (2014) in Eurasian hobby, Salem and Yousria (2000) in chicken, duck, and pigeon, whereas Bailey et al (1997) in captive bustards and Hassan and Moussa (2012) in domestic pigeon reported it as, cone shaped organ, Salem and Yousria (2000) recorded it as lens shaped organ in cattle egret, while, El Nahla et al (2011) reported it as trapezoid or rectangular shaped organ in the same bird. Moreover, El‐Ghazali (2008) described it as, dorsoventrally flattened oval organ in goose, small elongated pear in hoopoe, large elongated pear on Ibis, and cylindrical in pigeon.…”

Histological, histochemical, immunohistochemical and ultrastructural characterization of the testes of the dove

“…Laughing dove (LD; Spilopelia senegalensis) is classified in the family Columbidaes and is found in South Africa (Madkour and Mohamed, 2019). Few previous studies have recorded the reproduction of birds in southern Africa.…”

Histopathological and Ultrastructural Studies on Cestode Parasites Infecting Doves (Streptopelia Senegalensis) From Egypt

“…The laughing dove (Streptopelia senegalensis) is a small pigeon that is a resident breeder in Sub-Saharan Africa, the Middle East to the Indian Subcontinent as well as in Egypt (Madkour and Mohamed, 2019) This small long-tailed dove is found in dry scrub and semi-desert habitats where pairs can often be seen feeding on the ground (Bird Life International, 2015). Helminthes are major parasites of poultry animal.…”