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Middle Ear Mechanics in the Barn Owl.
J Morphol
January 2025
Department of Zoology, Denver Museum of Nature & Science, Denver, Colorado, USA.
The barn owl is a common research subject in auditory science due to its exceptional capacity for high frequency hearing and superb sound source localization capabilities. Despite longstanding interest in the auditory performance of barn owls, the function of its middle ear has attracted remarkably little attention. Here, we report the middle ear transfer function measured by laser Doppler vibrometry and direct measurements of inner ear pressures.
View Article and Find Full Text PDFBlue Light Damages Retinal Ganglion Cells Via Endoplasmic Reticulum Stress and Autophagy in Chickens.
Invest Ophthalmol Vis Sci
January 2025
Laboratory of Anatomy of Domestic Animals, National Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Haidian, Beijing, China.
Purpose: Because chickens have excellent light perception properties, this study focused on investigating whether monochromatic light can cause photodamage in chicken retinal ganglion cells (RGCs).
Methods: Post-hatching day chickens were exposed to four different light-emitting diode light environments for five weeks, respectively, monochromatic blue light (480 nm), green light (560 nm), red light (660 nm), or white light (6000 K). The mechanisms through which monochromatic light influences the structure of the chicken retina were analyzed by detecting the morphological structure of the retina, gene and protein expression levels, and the ultrastructure of the optic nerve.
Sperm fitness assessment in poultry: Brief review of in vitro methods.
Anim Reprod Sci
January 2025
Federal University of Pelotas, Pelotas, RS, Brazil. Electronic address:
In the poultry industry, every chick or poult produced has high economic value; therefore, selection of male breeders capable of transmitting desirable traits to their offspring has an important role in fertility and hatching success. Following either natural mating or artificial insemination, sperm must go through a sequence of steps to fertilize the egg: 1. Go from the site of deposition (vagina) to the Sperm Storage Tubules (SST); 2.
View Article and Find Full Text PDFTwo Birds With One Stone: A Novel Nanocomposite Combining Silicon Nanoparticles and Carbon-Doped Titania as the Fluorescence Probe and Visible Light Photocatalyst for Simultaneous Detection and Removal of Oxytetracycline.
Adv Sci (Weinh)
December 2024
Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China.
The monitoring and removal of environmental pollutants are vital for the sustainable development of society. Herein, a novel nanocomposite combining silicon nanoparticles and carbon-doped titania, C-TiO/SiNPs, is designed as a fluorescence probe and visible-light photocatalyst to simultaneously monitor and degrade oxytetracycline (OTC). C-TiO/SiNPs emit blue fluorescence, which can be quenched by OTC through inner filter effect.
View Article and Find Full Text PDFMorphological Analysis of the Digestive Tract of Cockatiels (Nymphicus hollandicus)-Oesophagus to Colorectum.
Anat Histol Embryol
January 2025
Patricia Romagnolli, Federal University of South Border, Superintendence of University Veterinary Hospital Unit, Veterinary Anatomy Sector, Paraná, Brazil.
Article Synopsis
- Cockatiels are popular pet birds that often need veterinary care, making it important to understand their digestive system for better treatment.
- This study involved dissecting six cockatiels to analyze and measure their digestive tract, revealing variability in size and specific structural features.
- Key findings included the structure of the oesophagus, stomach, and intestines, along with histological traits that showed similarities to other birds but also unique species-specific characteristics.
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