Related Experiment Video

Updated: Jul 3, 2026

Examination of Oral Candida Infection in Primary Sjögren's Syndrome Patients
05:26

Examination of Oral Candida Infection in Primary Sjögren's Syndrome Patients

Published on: March 1, 2024

Aspergillosis and candidiasis in psittacine and passeriforme birds with particular reference to nasal lesions

S S Tsai1, J H Park, K Hirai

  • 1department of Comparative Pathology, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060, Japan.

Avian Pathology : Journal of the W.V.P.A
|December 1, 1992
PubMed

Insights

High incidences of avian aspergillosis and candidiasis were found in imported birds. The nasal cavity is a key entry and multiplication site for these fungal infections in psittacine birds.

Area of Science:

  • Veterinary Mycology
  • Avian Pathology
  • Infectious Diseases

Background:

  • Imported birds, particularly psittacines and passeriformes, are susceptible to fungal infections.
  • Aspergillosis and candidiasis pose significant health risks to avian populations, especially during quarantine.

Purpose of the Study:

  • To investigate the incidence and pathological characteristics of aspergillosis and candidiasis in imported birds that died within two weeks of quarantine.
  • To identify key sites of fungal entry, multiplication, and lesion development in affected avian species.

Main Methods:

  • Necropsy and histopathological examination of 241 imported psittacine and passeriforme birds.
  • Identification of causative agents, Aspergillus spp. and Candida spp., through tissue analysis.
  • Correlation of clinical signs and gross lesions with microscopic findings.

Main Results:

  • High incidences of aspergillosis (12.9%) and candidiasis (15.4%) were recorded.
  • The nasal cavity was identified as a primary entry and multiplication site for both mycoses in psittacine birds.
  • Aspergillus spp. primarily affected the respiratory tract, causing exudative rhinitis, while Candida spp. targeted the nasal vestibular region and mucous membranes, leading to hyperkeratotic changes.

Conclusions:

  • The nasal cavity is a critical portal for aspergillosis and candidiasis in imported psittacine birds.
  • Distinct pathological patterns are associated with Aspergillus spp. and Candida spp. infections in avian hosts.
  • Effective quarantine and biosecurity measures are crucial to prevent the introduction and spread of these fungal diseases in avian populations.

More Related Videos

Th17 Inflammation Model of Oropharyngeal Candidiasis in Immunodeficient Mice08:02

Th17 Inflammation Model of Oropharyngeal Candidiasis in Immunodeficient Mice

Published on: February 18, 2015

Related Concept Videos

Candidiasis01:20

Candidiasis

Candidiasis is a fungal infection caused by opportunistic species of Candida. It can affect various anatomical sites, including the skin, oral cavity, nails, and genitourinary tract. Among its forms, vaginal candidiasis is the most common type of mucosal infection. It typically results from the overgrowth of Candida albicans in the vaginal mucosa. Under normal conditions, C. albicans exists as a commensal organism within the vaginal microbiota, regulated by the dominance of lactobacilli, which...
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Pneumonia I: Introduction01:30

Pneumonia I: Introduction

Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Leishmaniasis01:30

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...