(Cringoli and Quesada 1991) (Protozoa, Apicomplexa, Eimeriidae) is reported and described from captive canaries forma (Linnaeus 1758) in Mexico. The oöcysts are subspherical, 25.5 × 23.5 μm, with smooth, bilayered wall, ∼1.3 μm thick. Micropyle absent, oöcyst residuum absent, and polar granule present, 4-8 rice-grain-shaped. Sporocysts are ovoidal, 16.7 × 10.5 μm. Stieda body knob-like and substieda body trapezoidal of irregular base. Sporocyst residuum is composed of granules of different sizes. Sporozoites are vermiform with one refractile body and a nucleus. Gamogony was seen in the duodenum. In addition to new locality, this is the first description of from .
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6262769 | PMC |
| http://dx.doi.org/10.1016/j.ijppaw.2018.11.004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Sperm Cryopreservation in Canaries to Protect Endangered Songbird Species: Comparison of Different Cryoprotectants.
Vet Med Sci
November 2024
Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun, Turkey.
Sperm cryopreservation is a rather complex process that needs to be adapted to wild and domestic bird species to ensure adequate efficiency. This study aimed to determine the usability of different cryoprotectants in the cryopreservation of Gloster canary sperm. For this purpose, sperm samples were collected from 12 2-year-old male Gloster canaries three times a week using cloacal massage for 4 weeks.
View Article and Find Full Text PDFNeurochemical Characterization of Dopaminoceptive Cells in Song Control Nuclei of Canaries and Their Activation During Song Production: A Multiplex Fluorescent In Situ Hybridization Study.
J Comp Neurol
October 2024
Neuroscience and Cognitive Science Program, University of Maryland, College Park, Maryland, USA.
Article Synopsis
- Researchers used an advanced technique called RNAScope to measure the levels of three dopamine receptors (Drd1, Drd2, Drd3) in specific brain regions related to song control in male and female canaries, who were treated with testosterone to promote singing activity.
- The study found that all receptor types were present in the various regions, except Drd3 in Area X, but there were very few noticeable differences between male and female canaries regarding dopamine receptor expression, which did not account for the differences in song.
- The majority of dopamine receptor-expressing cells in the HVC area were linked to excitatory markers, while the PAG had lower receptor density and fewer inhibitory cells, and activation of these cells during
A missense mutation in the tyrosinase gene explains acromelanism in domesticated canaries.
Anim Genet
December 2024
Department of Life Sciences, MARE - Marine and Environmental Sciences Centre, University of Coimbra, Coimbra, Portugal.
Article Synopsis
- Acromelanism is a type of albinism seen in various vertebrates, where mutations in the TYR gene affect melanin production, leading to specific hair or feather color patterns.* -
- This study focused on identifying the genetic cause of the acromelanistic "pearl" canary and determined that a mutation in the TYR gene likely results in this phenotype.* -
- The findings suggest that similar acromelanistic traits in other bird species may also be linked to mutations in the TYR gene, similar to what is observed in mammals.*
Feather carotenoids of the American Redstart (Setophaga ruticilla) across age and sex classes and the reliability of standard color metrics to capture pigment variation.
Comp Biochem Physiol B Biochem Mol Biol
January 2025
Department of Biological Sciences, Thompson Rivers University, 805 TRU Way, Kamloops, BC V2C 0C8, Canada. Electronic address:
Plumage ornaments act as important sexual signals, though the extent to which these ornaments act as honest signals-and the physiological mechanisms that maintain honesty-remain poorly understood. We studied the pigmentary basis of tail color in the American Redstart (Setophaga ruticilla), a species of songbird with sexual dichromatism and delayed plumage maturation; younger males resemble females, only replacing their yellow feathers for bright orange ones after the first breeding season. The yellow rectrices of females and young males and the orange feathers of older males largely contain the same pigments, but in vastly different proportions.
View Article and Find Full Text PDFGenomic variation in Plasmodium relictum (lineage SGS1) and its implications for avian malaria infection outcomes: insights from experimental infections and genome-wide analysis.
Malar J
August 2024
Evolutionary Ecology and Infection biology, Department of Biology, Lund University, Lund, Sweden.
Article Synopsis
- The study investigates the avian malaria parasite Plasmodium relictum (SGS1) and how different genetic isolates affect infection outcomes in birds, highlighting a range from latent to deadly effects.
- Two different genetic isolates were tested on canaries to observe their growth and impact on host health, revealing significant variations in mortality and blood parameters.
- The research found extensive genetic diversity within the SGS1 population, indicating that this variation may influence different infection outcomes in both lab settings and in nature, enhancing our understanding of host-parasite dynamics.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!