Microfilaria columbæ n. sp. du sang d’un pigeon indien : Columba intermedia

SPIROCHAETA MICROTI n. sp., parasite du campagnol (Microtus sp.) en Iran

Successful Surgical Ablation of Coelomic Granuloma in Pigeon (Columba livia)

Case Description- A 4-year-old male homer pigeon (Columba livia) with anorexia, lethargy, emaciation, and abdominal distention was referred to Veterinary Teaching Hospital of Faculty of Veterinary Medicine, Ferdowsi University of Mashhad. Clinical Findings- Palpation revealed a solid mass in the caudal coelomic region. Radiographic and ultrasonographic examinations showed caudal coelo...

Genetic analyses of visual pigments of the pigeon (Columba livia).

We isolated five classes of retinal opsin genes rh1(Cl), rh2(Cl), sws1(Cl), sws2(Cl), and lws(Cl) from the pigeon; these encode RH1(Cl), RH2(Cl), SWS1(Cl), SWS2(Cl), and LWS(Cl) opsins, respectively. Upon binding to 11-cis-retinal, these opsins regenerate the corresponding photosensitive molecules, visual pigments. The absorbance spectra of visual pigments have a broad bell shape with the peak,...

Visual responses and afferent connections of the n. ventrolateralis thalami (VLT) in the pigeon (Columba livia).

The nucleus ventrolateralis thalami (VLT) in pigeons receives direct retinal and forebrain projections and has reciprocal connections with the optic tectum. Although VLT is a component of the avian visual system, no study directly examined its connections or its cellular response characteristics. We, therefore, recorded from single units in the pigeon's VLT while visually stimulating the ipsi- ...

Caudal duplication (dipygus) in a Rock Pigeon (Columba livia)

Congenital defects are those abnormalities present at birth that result from errors arising during development (Noden and de la Hunta, 1985). Congenital duplications are interesting among congenital defects because they are composed by two individuals. Multiple births most frequently result from fertilization of separately ovulated female gametes. However, complete or partial separation of clea...