The cellular and molecular origins of beak morphology.

Molecular detection and characterization of beak and feather disease virus in psittacine birds in Tehran, Iran

Beak and feather disease virus (BFDV), a member of genus circovirus, is a small, non-enveloped, single stranded DNA virus. Although BFDVs are among the most well studied circoviruses, there is little to no information about BFDVs in Iran. The aim of the present study was to detect and identify BFDV molecules from the birds referred to the avian clinic of The Faculty of Veterinary Medicine, Tehr...

Psittacine beak and feather disease in Iran, molecular and histopathologic detection

Evaluation of morphological variations of Iranian mandible condyles

Aims: The morphology of the condyle varies according to the race of the population in different places. Moreover, the identification of morphologies can be effective in diagnosing the pathogenesis and type of treatment of patients. Therefore, in this study, the researchers examine condyl morphology images using digital panoramic imaging. Materials and methods: This descriptive-analytical stud...

Microscopic Structures Analysis and Experimental Research of Beak

To reveal the mechanism of the easy discretization and low damage in kernel dispersal, this paper analyzes the microscopic analysis of beak structures and finds that maxillary outside cells of the beak are dense and hard. Besides, the cuticle wrapping on maxilla of chicken's beak can reduce corn kernels damage in the discrete process of ear. From force test of corn ear, we find that value of x ...

Correlated evolution of beak morphology and song in the neotropical woodcreeper radiation.

Mating signals may diversify as a byproduct of morphological adaptation to different foraging niches, potentially driving speciation. Although many studies have focused on the direct influence of ecological and sexual selection on signal divergence, the role of indirect mechanisms remains poorly understood. Using phenotypic and molecular datasets, we explored the interplay between morphological...