Pseudallescheria boydii Species Complex Fungal Rhinitis and Sinusitis in a Dog

2011 ◽  
Vol 47 (5) ◽  
pp. 365-369 ◽  
Author(s):  
Kristine Bruskiewicz ◽  
Martin Crawford-Jakubiak
Keyword(s):  
Species Complex ◽  
Human Pathogen ◽  
Pseudallescheria Boydii ◽  
Mixed Breed ◽  
History Of

A 9 yr old male castrated Australian shepherd mixed-breed dog with a 3 mo history of intermittent unilateral epistaxis was diagnosed with Pseudallescheria boydii species complex fungal rhinitis and sinusitis. This fungal organism is a rare cause of disease in dogs and an emerging human pathogen. The dog was successfully treated with topical clotrimazole.

scholarly journals Genetic structure and biogeographic history of the Bicknell’s Thrush/ Gray-cheeked Thrush species complex

The Auk ◽  
2019 ◽  
Vol 137 (1) ◽  
Author(s):  
Alyssa M Fitzgerald ◽  
Jason Weir ◽  
Joel Ralston ◽  
Ian G Warkentin ◽  
Darroch M Whitaker ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Late Pleistocene ◽  
Species Complex ◽  
Extended Period ◽  
Genetic Data ◽  
Distribution Models ◽  
Biogeographic History ◽  
History Of ◽  
Low Levels ◽  
Bicknell's Thrush

Abstract We examined species limits, admixture, and genetic structure among populations in the Bicknell’s Thrush (Catharus bicknelli)–Gray-cheeked Thrush (C. minimus) species complex to establish the geographic and temporal context of speciation in this group, which is a model system in ecology and a high conservation priority. We obtained mitochondrial ND2 sequences from 186 Bicknell’s Thrushes, 77 Gray-cheeked Thrushes, and 55 individuals of their closest relative, the Veery (C. fuscescens), and genotyped a subset of individuals (n = 72) at 5,633 anonymous single nucleotide polymorphic (SNP) loci. Between-species sequence divergence was an order of magnitude greater than divergence within each species, divergence was dated to the late Pleistocene (420 kbp) based on Bayesian coalescence estimation, and a coalescent model (IMa) revealed almost no gene flow between species based on ND2. SNP data were consistent with mitochondrial results and revealed low levels of admixture among species (3 of 37 Bicknell’s Thrushes, no Gray-cheeked Thrushes, and no Veeries were >2% admixed). Species distribution models projected to the Last Glacial Maximum suggest that Bicknell’s Thrush and Gray-cheeked Thrush resided in primarily allopatric refugia in the late Pleistocene, consistent with the genetic data that support reproductive isolation over an extended period of time. Our genetic data suggest that both species underwent demographic expansions, possibly as they expanded out of Pleistocene refugia into their current ranges. We conclude that Bicknell’s Thrush and Gray-cheeked Thrush are 2 distinct species-level lineages despite low levels of Gray-cheeked Thrush introgression in Bicknell’s Thrushes, and divergence has been maintained by a long history of allopatry in subtly different habitats. Their unique phylogeography among boreal forest birds indicates that either cryptic species breaks in eastern North America are still undiscovered, or another factor, such as divergent natural selection, high migratory connectivity, or interspecific competition, played a role in their divergence.

Fine-mapping complex inversion breakpoints and investigating somatic pairing in the Anopheles gambiae species complex using proximity-ligation sequencing

2019 ◽  
Author(s):  
Russell B. Corbett-Detig ◽  
Iskander Said ◽  
Maria Calzetta ◽  
Max Genetti ◽  
Jakob McBroome ◽  
...  
Keyword(s):  
Anopheles Gambiae ◽  
Species Complex ◽  
Cytological Study ◽  
Sequencing Data ◽  
Proximity Ligation ◽  
Chromosomal Inversions ◽  
History Of ◽  
Somatic Pairing ◽  
Inversion Breakpoints ◽  
Rich History

AbstractChromosomal inversions are fundamental drivers of genome evolution. In the main afro-tropical malaria vector species, belonging to the Anopheles gambiae species complex, inversions play an important role in local adaptation and have a rich history of cytological study. Despite the importance and ubiquity of some chromosomal inversions across the species complex, inversion breakpoints are often challenging to map molecularly due to the presence of large repetitive regions. Here, we develop an approach that uses Hi-C sequencing data to molecularly fine-map the breakpoints of inversions 2Rbc and 2Rd in A. coluzzii. We found that inversion breakpoints occur in large repetitive regions, and strikingly among three inversions analyzed, two breakpoints appear to be reused in two separate inversions. Additionally, we use heterozygous individuals to quantitatively investigate somatic pairing disruption in the regions immediately surrounding inversion breakpoints, and we find that pairing disruption is undetectable beyond approximately 250 Kb from the inversion breakpoints.

Esophageal/gastric adenocarcinoma in a dog

1997 ◽  
Vol 33 (1) ◽  
pp. 42-44 ◽  
Author(s):  
M Takiguchi ◽  
J Yasuda ◽  
A Hashimoto ◽  
K Ochiai ◽  
C Itakura
Keyword(s):  
Weight Loss ◽  
Gastric Adenocarcinoma ◽  
Histopathological Diagnosis ◽  
Intact Female ◽  
Mixed Breed ◽  
History Of ◽  
Contrast Radiography

A nine-year-old, intact female, mixed-breed dog was presented with a history of chronic regurgitation and weight loss. Endoscopy and contrast radiography confirmed the presence of a distal esophageal mass. The dog was euthanized, and histopathological diagnosis of the mass was an esophageal/gastric adenocarcinoma.

scholarly journals Species Delimitation and Lineage Separation History of a Species Complex of Aspens in China

2017 ◽  
Vol 8 ◽  
Author(s):  
Honglei Zheng ◽  
Liqiang Fan ◽  
Richard I. Milne ◽  
Lei Zhang ◽  
Yaling Wang ◽  
...  
Keyword(s):  
Species Delimitation ◽  
Species Complex ◽  
History Of

scholarly journals Hepatic Encephalopathy in Two Goat Kids with Common Paternity

2008 ◽  
Vol 20 (6) ◽  
pp. 807-811 ◽  
Author(s):  
Gregory K. Wilkerson ◽  
Monali M. Bera ◽  
Timothy N. Holt ◽  
Robert J. Callan ◽  
Karamjeet Pandher
Keyword(s):  
Hepatic Encephalopathy ◽  
White Matter ◽  
Reference Interval ◽  
Laboratory Diagnostics ◽  
Cell Hyperplasia ◽  
Mental Deterioration ◽  
Mixed Breed ◽  
History Of ◽  
Portal Veins ◽  
The Brain

Two juvenile, intact, female mixed-breed goats from a common sire were presented for periodic neurologic deficits, seizures, and a generalized loss of body condition that occurred over a 4–6-week period. On physical examination, both goats were thin, obtunded, blind, and ataxic. Laboratory diagnostics revealed increased serum bile acids (95 μmol/l; reference interval: 0–50 μmol/l) in one of the goats. Both goats exhibited progressive physical and mental deterioration, and were eventually euthanized. Upon necropsy, no significant macroscopic lesions were noted. Microscopic examination, however, demonstrated hepatocellular atrophy and anomalies in the hepatic microvasculature, including duplication of hepatic arteries, small-to-indistinct portal veins, and oval cell hyperplasia. In addition, spongiform change was microscopically identified throughout the parenchyma of the brain, most notably within the white matter and along the junction of gray and white matter. The diagnosis of congenital portal vein hypoperfusion (suggestive of a portosystemic shunt) with resultant hepatic encephalopathy was proposed in each case based on the characteristic microscopic lesions in conjunction with the signalment and history of the goats. The observation that the affected kids were sired by the same buck suggests a hereditary basis for the condition in these animals as well.

scholarly journals Tumor collision of uterine adenocarcinoma and leiomyosarcoma in a goat

2017 ◽  
Vol 29 (5) ◽  
pp. 696-699 ◽  
Author(s):  
Jenna C. Dockweiler ◽  
Brieuc Cossic ◽  
Sean P. McDonough ◽  
Susan L. Fubini ◽  
Kayla M. Le ◽  
...  
Keyword(s):  
Lung Parenchyma ◽  
Collision Tumor ◽  
Biological Behavior ◽  
Primary Adenocarcinoma ◽  
Speculum Examination ◽  
Mixed Breed ◽  
History Of ◽  
The Masses ◽  
Strong Suspicion ◽  
Uterine Adenocarcinoma

An aged mixed-breed goat doe was presented with a 9-mo history of serosanguineous vaginal discharge. Vaginal speculum examination revealed serosanguineous discharge but otherwise no abnormalities. Transrectal ultrasonography showed normal ovaries and multifocal cystic lesions within the uterus. Ovariohysterectomy was recommended because of a strong suspicion of neoplasia. Multiple, non-resectable masses were noted in and around the uterus intraoperatively, and euthanasia was elected. Autopsy revealed multiple masses within the uterus, cervix, and lung parenchyma. Histologically, the masses within the uterus represented a likely collision tumor of primary adenocarcinoma and leiomyosarcoma. Our report highlights the importance of obtaining biopsy samples of all masses because the lesions described showed significantly different biological behavior. This information is vital to guide treatment and prognosis.

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