Robertsonian chromosome polymorphism in the Arabian oryx (<i>Oryx leucoryx</i>)

Pemphigus foliaceus (PF) is an autoimmune acantholytic skin disease described in humans, dogs, cats, horses, goats, and sheep. From 2003 to 2016, six Arabian oryx ( Oryx leucoryx) at the National Zoological Garden in Pretoria, South Africa, developed progressive, bilaterally symmetrical, hyperkeratotic skin lesions and pustules consistent with PF. Lesions were similar to those observed in domestic animals and primarily affected the pinnae, face and nasal planum, distal legs, and tail tip. Histological evaluation of suspect PF skin lesions in affected animals, evaluation of medical records for treatments received, causative agents in the diet and environment, and special stains for infectious organisms yielded no consistent inciting cause. The Arabian oryx is a species highly adapted to arid environments of the desert and has recently survived from a severe genetic bottleneck; both of these factors may have contributed to the development of PF in these animals.

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On the Maintenance of Sex Chromosome Polymorphism by Sex-Antagonistic Selection

The American Naturalist ◽

10.1086/661895 ◽

2011 ◽

Vol 178 (4) ◽

pp. 515-524 ◽

Cited By ~ 5

Author(s):

Olivier Blaser ◽

Samuel Neuenschwander ◽

Nicolas Perrin

Keyword(s):

Sex Chromosome ◽

Chromosome Polymorphism ◽

Antagonistic Selection ◽

Maintenance Of Sex

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The hairy lizard: heterothermia affects anaesthetic requirements in the Arabian oryx ( Oryx leucoryx )

Veterinary Anaesthesia and Analgesia ◽

10.1016/j.vaa.2016.10.005 ◽

2017 ◽

Vol 44 (4) ◽

pp. 899-904 ◽

Cited By ~ 1

Author(s):

Mads F. Bertelsen ◽

Osama Mohammed ◽

Tobias Wang ◽

Paul R. Manger ◽

David Michael Scantlebury ◽

...

Keyword(s):

Arabian Oryx

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Chromosome polymorphism in wild Atlantic salmon, Salmo salar L., from Asturias, northern Spain

Aquaculture Research ◽

10.1111/j.1365-2109.1992.tb00599.x ◽

1992 ◽

Vol 23 (1) ◽

pp. 95-101

Author(s):

E. GARCIA-VAZQUEZ ◽

A. M. PENDAS ◽

P. MORAN

Keyword(s):

Atlantic Salmon ◽

Salmo Salar ◽

Chromosome Polymorphism ◽

Northern Spain ◽

Atlantic Salmon Salmo Salar

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Chromosome polymorphism in natural populations of Anopheles quadrimaculatus Say species A and B

Genome ◽

10.1139/g88-024 ◽

1988 ◽

Vol 30 (2) ◽

pp. 138-146 ◽

Cited By ~ 1

Author(s):

P. E. Kaiser ◽

J. A. Seawright ◽

B. K. Birky

Keyword(s):

X Chromosome ◽

Southeastern United States ◽

Polytene Chromosomes ◽

Natural Populations ◽

Chromosome 3 ◽

Chromosome Polymorphism ◽

Chromosome 2 ◽

Anopheles Quadrimaculatus ◽

The Right ◽

Maculipennis Complex

Ovarian polytene chromosomes from eight populations of Anopheles quadrimaculatus in the southeastern United States were observed for chromosomal polymorphisms. Two sibling species, species A and B, each with intraspecific inversions, were distinguished. Species A correlates with the previously published standard maps for salivary gland and ovarian nurse-cell polytene chromosomes. Species A was found at all eight collection sites, and five of these populations also contained species B. Three inversions on the right arm of chromosome 3 were observed in species A. Species B contained a fixed inversion on the X chromosome, one fixed and one floating inversion on the left arm of chromosome 2, and one fixed and one floating inversion on the right arm of chromosome 3. The fixed inversion on the X chromosome makes this the best diagnostic chromosome for distinguishing species A and B. An unusual dimorphism in the left arm of chromosome 3, found in both species A and B, contained two inversions. The heterokaryotypes, as well as two distinct homokaryotypes, were seen in all of the field populations. Intraspecific clinal variations in the frequencies of the species A inversions were noted. The Florida populations were practically devoid of inversions, the Georgia and Alabama populations contained some inversions, and the Arkansas population was mostly homozygous for two of the inversions. The phylogenetic relationships of species A and B to the Maculipennis complex (Nearctic) are discussed.Key words: Anopheles, inversion, populations, chromosome polymorphism, phylogenetics.

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