Annual Molting Cycle and Photoperiods That Affect Seasonal Coat Color Changes in the Japanese Marten (Martes melampus)

Mammal Study ◽  
2017 ◽  
Vol 42 (4) ◽  
pp. 1-10 ◽  
Author(s):  
Kimitake Funakoshi ◽  
Ayumi Nagasato ◽  
Seiko Takenouchi ◽  
Rie Kannonji ◽  
Madoka Kikusui ◽  
...  
Keyword(s):  
Coat Color ◽  
Molting Cycle ◽  
Color Changes ◽  
Martes Melampus

scholarly journals High Polymorphism at the Human Melanocortin 1 Receptor Locus

Genetics ◽  
1999 ◽  
Vol 151 (4) ◽  
pp. 1547-1557 ◽  
Author(s):  
Brinda K Rana ◽  
David Hewett-Emmett ◽  
Li Jin ◽  
Benny H-J Chang ◽  
Naymkhishing Sambuughin ◽  
...  
Keyword(s):  
Protein Sequence ◽  
Nucleotide Diversity ◽  
Coat Color ◽  
Low Frequency ◽  
Melanocortin Receptor ◽  
Human Populations ◽  
Melanocortin 1 Receptor ◽  
Mc1r Gene ◽  
Southeast Asians ◽  
Color Changes

Abstract Variation in human skin/hair pigmentation is due to varied amounts of eumelanin (brown/black melanins) and phaeomelanin (red/yellow melanins) produced by the melanocytes. The melanocortin 1 receptor (MC1R) is a regulator of eu- and phaeomelanin production in the melanocytes, and MC1R mutations causing coat color changes are known in many mammals. We have sequenced the MC1R gene in 121 individuals sampled from world populations with an emphasis on Asian populations. We found variation at five nonsynonymous sites (resulting in the variants Arg67Gln, Asp84Glu, Val92Met, Arg151Cys, and Arg163Gln), but at only one synonymous site (A942G). Interestingly, the human consensus protein sequence is observed in all 25 African individuals studied, but at lower frequencies in the other populations examined, especially in East and Southeast Asians. The Arg163Gln variant is absent in the Africans studied, almost absent in Europeans, and at a low frequency (7%) in Indians, but is at an exceptionally high frequency (70%) in East and Southeast Asians. The MC1R gene in common and pygmy chimpanzees, gorilla, orangutan, and baboon was sequenced to study the evolution of MC1R. The ancestral human MC1R sequence is identical to the human consensus protein sequence, while MC1R varies considerably among higher primates. A comparison of the rates of substitution in genes in the melanocortin receptor family indicates that MC1R has evolved the fastest. In addition, the nucleotide diversity at the MC1R locus is shown to be several times higher than the average nucleotide diversity in human populations, possibly due to diversifying selection.

DNA Circles Cause Cow Coat Color Changes

Science ◽  
2011 ◽  
Vol 332 (6033) ◽  
pp. 1030-1030
Author(s):  
E. Pennisi
Keyword(s):  
Coat Color ◽  
Color Changes

scholarly journals Analysis of Coat Color Changes and Hormone Levels in Korean Brindle Cattle

2015 ◽  
Vol 30 (1) ◽  
pp. 65-71
Author(s):  
Hae-Lee Lee ◽  
Jae-Hee Park ◽  
Yong-Su Kim ◽  
Jong Gug Kim
Keyword(s):  
Coat Color ◽  
Hormone Levels ◽  
Color Changes

Tyrosinase and the Regulation of Coat Color Changes in C3H-HeAvy Mice

1992 ◽  
Vol 5 (5) ◽  
pp. 335-339 ◽  
Author(s):  
ANTHONY J. THODY ◽  
SUSAN A. BURCHILL
Keyword(s):  
Coat Color ◽  
Color Changes

α-MSH and coat color changes in the mouse

Peptides ◽  
1984 ◽  
Vol 5 (6) ◽  
pp. 1031-1036 ◽  
Author(s):  
A.J. Thody ◽  
Kathy Ridley ◽  
R.J. Carter ◽  
Angela M. Lucas ◽  
Sam Shuster
Keyword(s):  
Coat Color ◽  
Color Changes

P2-005 Gamma secretase inhibitor-induced coat color changes in a novel animal model, the degu (Octodon degus)

2004 ◽  
Vol 25 ◽  
pp. S225
Author(s):  
Martin J. Pagnozzi ◽  
Robert Dunstan ◽  
Ann Ryan ◽  
Mary Payette ◽  
Barbara Tate
Keyword(s):  
Animal Model ◽  
Coat Color ◽  
Gamma Secretase ◽  
Octodon Degus ◽  
Color Changes ◽  
Secretase Inhibitor ◽  
Gamma Secretase Inhibitor
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