Karyotypic kinship between the blue fox (Alopex lagopus Linn.) and the silver fox (Vulpes fulvaDesm.)

1983 ◽  
Vol 35 (3) ◽  
pp. 190-194 ◽  
Author(s):  
M.A. Yoshida ◽  
N. Takagi ◽  
M. Sasaki
Keyword(s):  
Alopex Lagopus ◽  
Silver Fox ◽  
Blue Fox

scholarly journals Morphometric Characteristics of the Spermatozoa of Blue Fox (Alopex lagopus) and Silver Fox (Vulpes vulpes)

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1927
Author(s):  
Katarzyna Andraszek ◽  
Dorota Banaszewska ◽  
Olga Szeleszczuk ◽  
Marta Kuchta-Gładysz ◽  
Anna Grzesiakowska
Keyword(s):  
Vulpes Vulpes ◽  
Tail Length ◽  
Head Length ◽  
Head Width ◽  
Sperm Length ◽  
Alopex Lagopus ◽  
Silver Fox ◽  
Shape Indices ◽  
Length Width ◽  
Blue Fox

The results presented in this study are the first such extensive characterization of the sperm morphometry of the blue fox (Alopex lagopus) and silver fox (Vulpes vulpes), as representatives of the family Canidae. Canine spermatozoa, especially the sperm of farmed foxes, are not often described in studies on reproduction. The aim of the study was a detailed comparison of the morphometric dimensions and shape of the sperm of two fox species: silver fox and blue fox. Semen collected from 10 silver foxes and 10 blue foxes was used for the study. The specimens were stained with silver nitrate. Measurements were performed of the length, width, perimeter, and area of the head; the area of the acrosome and its coverage; the length of the midpiece and its coverage; the length of the tail; and the length of the end piece of the tail. In addition, four head shape indices were calculated: ellipticity, elongation, roughness and regularity. The following values for the morphometric parameters and shape indices were obtained for blue fox and silver fox, respectively: head length—6.72 µm and 6.33 µm; head width—4.54.µm and 4.21 µm; head perimeter—18.11 µm and 17.37 µm; head area—21.94 µm2 and 21.11 µm2; acrosome area—11.50 µm2 and 10.92 µm2; midpiece length—12.85 µm and 12.79 µm; tail end piece length—3.44 µm and 3.28 µm; tail length—65.23 µm and 65.09 µm; acrosome coverage—52.43% and 52.83%; midpiece coverage—19.71% and 19.65%; sperm length—71.95 µm and 71.42 µm; ellipticity—1.49 and 1.52; elongation—0.19 and 0.20; roughness—0.84 and 1.88; regularity—1.09 and 0.99. The significance of differences between species was verified by Tukey’s test at p ≤ 0.05. Statistically significant differences between species were found for the following parameters: head length, width, perimeter and area; acrosome area; tail, end piece, and total sperm length; roughness and regularity. The differences in the size and shape of sperm can be used to establish reference patterns for fox sperm enabling more accurate species identification.

Comparison between Microscopic and Automated Differential Leukocyte Counts in the Silver Fox (Vulpes vulpes) and the Blue Fox (Alopex lagopus)

1999 ◽  
Vol 28 (2) ◽  
pp. 65-70 ◽  
Author(s):  
Randi Oppermann Moe ◽  
Morten Bakken ◽  
Hege Brun-Hansen ◽  
Tormod Ådnøy ◽  
Hanne Morberg
Keyword(s):  
Vulpes Vulpes ◽  
Alopex Lagopus ◽  
Silver Fox ◽  
Leukocyte Counts ◽  
Blue Fox

scholarly journals Toxic and Carcinogenic Effects of Dimethylnitrosamine (Dmna) in the Blue Fox (Alopex Lagopus)

1981 ◽  
Vol 22 (3-4) ◽  
pp. 501-516
Author(s):  
Nils Koppang ◽  
Arne Helgebostad ◽  
Donald Armstrong ◽  
Hans Rimeslåtten
Keyword(s):  
Alopex Lagopus ◽  
Carcinogenic Effects ◽  
Blue Fox

scholarly journals Chromosomal Instability at Fragile Sites in Blue Foxes, Silver Foxes, and Their Interspecific Hybrids

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1743
Author(s):  
Marta Kuchta-Gładysz ◽  
Ewa Wójcik ◽  
Anna Grzesiakowska ◽  
Katarzyna Rymuza ◽  
Olga Szeleszczuk
Keyword(s):  
Interspecific Hybrids ◽  
Genome Stability ◽  
Diploid Number ◽  
Fragile Sites ◽  
B Chromosomes ◽  
Silver Fox ◽  
Chromosomal Breaks ◽  
Blue Fox ◽  
Chromosomal Fragile Sites ◽  
Karyotypic Variation

A cytogenetic assay based on fragile sites (FS) enables the identification of breaks, chromatid gaps, and deletions. In healthy individuals, the number of these instabilities remains low. Genome stability in these species is affected by Robertsonian translocations in the karyotype of the blue fox and by B chromosomes in the silver fox. The aims of the study were to characterise the karyotype of blue foxes, silver foxes, and their hybrids and to identify chromosomal fragile sites used to evaluate genome stability. The diploid number of A chromosomes in blue foxes ranged from 48 to 50, while the number of B chromosomes in silver foxes varied from one to four, with a constant number of A chromosomes (2n = 34). In interspecific hybrids, both types of karyotypic variation were identified, with the diploid number of A chromosomes ranging from 40 to 44 and the number of B chromosomes varying from 0 to 3. The mean frequency of FS in foxes was 4.06 ± 0.19: 4.61 ± 0.37 in blue foxes, 3.46 ± 0.28 in silver foxes, and 4.12 ± 0.22 in hybrids. A relationship was identified between an increased number of A chromosomes in the karyotype of the hybrids and the frequency of chromosomal breaks. The FS assay was used as a biomarker for the evaluation of genomic stability in the animals in the study.

The genetics of body condition and leg weakness in the blue fox (Alopex lagopus)

2010 ◽  
Vol 60 (3) ◽  
pp. 141-150 ◽  
Author(s):  
R. Kempe ◽  
N. Koskinen ◽  
E. Mäntysaari ◽  
I. Strandén
Keyword(s):  
Body Condition ◽  
Alopex Lagopus ◽  
Leg Weakness ◽  
Blue Fox
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