Simulating a Colour Mutation: Conspicuous Red Wings in the European Blackbird Reduce the Risk of Attacks by Sparrowhawks

1996 ◽  
Vol 10 (3) ◽  
pp. 355 ◽  
Author(s):  
F. Gotmark
Keyword(s):  
Colour Mutation

A Red Eye Colour Mutation in Culex pipiens after X-irradiation

Nature ◽  
1963 ◽  
Vol 200 (4909) ◽  
pp. 917-918 ◽  
Author(s):  
A. WILD
Keyword(s):  
Culex Pipiens ◽  
Red Eye ◽  
Eye Colour ◽  
Colour Mutation ◽  
X Irradiation

Mottled Neuherberg (MoN), a new male-lethal coat colour mutation of the house mouse (Mus musculus)

1975 ◽  
Vol 46 (3) ◽  
pp. 135-142
Author(s):  
Johannes Horst Schröder
Keyword(s):  
House Mouse ◽  
Mus Musculus ◽  
Coat Colour ◽  
Colour Mutation

scholarly journals New colour mutation (ruby) in the Microtus arvalis (Pallas, 1779) and its inheritance

1963 ◽  
Vol 7 ◽  
pp. 321-332 ◽  
Author(s):  
Stanisław Humiński
Keyword(s):  
Microtus Arvalis ◽  
Colour Mutation

scholarly journals Effect of cage enrichment on the welfare of farmed foxes

2019 ◽  
Vol 75 (05) ◽  
pp. 6242-2019
Author(s):  
STANISŁAW ŁAPIŃSKI ◽  
SYLWIA PAŁKA ◽  
DANUTA WROŃSKA ◽  
IWONA GUJA ◽  
ANDRZEJ ZOŃ ◽  
...  
Keyword(s):  
Salivary Cortisol ◽  
Vulpes Vulpes ◽  
Emotional State ◽  
Control Group ◽  
Feeding Test ◽  
Group I ◽  
Colour Mutation ◽  
Human Animal ◽  
The Impact ◽  
Test Correlation

The aim of the study was to use behavioural and cortisol tests to determine whether cage enrichment (observation shelves, wooden sticks for gnawing) improves the welfare of farmed foxes (Vulpes vulpes). The paper discusses welfare criteria such as "expression of other behaviours", "good human–animal relationships" and "positive emotional state". The study covered 60 young foxes. After weaning, the animals were placed in standard cages, two individuals per cage. The foxes were divided into three groups. In the control group, no additional cage enrichment was provided. Group I was provided with observation shelves; group II was provided with wooden gnawing sticks. During the experiment the foxes underwent repeated tests: empathic test, feeding test and salivary cortisol test. The data obtained were analysed statistically (ANOVA, Tukey’s test, correlation), taking into account the following variables: the impact of cage enrichment, animal gender, temperament, and colour mutation. The study did not show conclusively that the use of cage enrichment affects animal temperament or the level of cortisol. However, in the group with gnawing sticks, the level of cortisol in the second measurement was significantly lower in comparison with other groups. This indicates that satisfying the need to gnaw objects reduces stress in foxes. The study showed a high correlation between the empathic and the feeding test, both of which are useful for testing the emotional state of foxes and the human–animal relationship.

scholarly journals Advance in mechanism of plant leaf colour mutation

2021 ◽  
Vol 49 (2) ◽  
pp. 12071
Author(s):  
Mingyue FU ◽  
Shuiyuan CHENG ◽  
Feng XU ◽  
Zexiong CHEN ◽  
Zhongbing LIU ◽  
...  
Keyword(s):  
Mevalonate Pathway ◽  
Research Progress ◽  
Common Mutation ◽  
Chlorophyll Metabolism ◽  
Plant Leaf ◽  
Leaf Colour ◽  
Colour Mutation ◽  
Non Coding Rnas ◽  
Metabolic Basis ◽  
Colour Development

As a common mutation trait in plants, leaf colour mutation is related to the degree of chlorophyll and anthocyanin changes and the destruction of chloroplast structure. This study summarizes the latest research progress in leaf colour mutation mechanism, including the metabolic basis of plant leaf colour mutation, leaf colour mutation caused by gene mutation in the chlorophyll metabolism pathway, leaf colour mutation caused by blocked chloroplast development, leaf colour mutation controlled by key transcription factors and non-coding RNAs, leaf colour mutation caused by environmental factors, and leaf colour mutation due to the involvement of the mevalonate pathway. These results will lay a theoretical foundation for leaf colour development, leaf colour improvement, and molecular breeding for leaf colour among tree species.

INVESTIGATIONS ON THE SPORTING PROCESS IN GREENHOUSE CHRYSANTHEMUMS

1958 ◽  
Vol 38 (3) ◽  
pp. 346-356 ◽  
Author(s):  
D. R. Sampson ◽  
G. W. R. Walker ◽  
A. W. S. Hunter ◽  
Marie Bragdø
Keyword(s):  
Water Treatment ◽  
Chromosome Number ◽  
Chromosome Numbers ◽  
Flower Colour ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Colour Mutation ◽  
Number Variation ◽  
Chromosome Number Variation

The chromosome numbers of 56 varieties of greenhouse chrysanthemums were determined. Fifty-one varieties belonged to 10 'families' of sports and the chromosome numbers of the sports were compared with those of their vegetative parents. Sporting, mostly flower colour mutation, was accompanied by the gain or loss of a few chromosomes in about 30 per cent of the cases. Two plants with different chromosome numbers but with the true varietal flower colour were found.The most frequent chromosome number in the authors' material was 2n = 57. The range was 2n = 45–64. Mitotic irregularities and chromosome number variation within individuals were observed. Attempts to induce sporting by hot water treatment failed.Varieties with large inflorescences had higher chromosome numbers (2n = 58–64) than varieties with medium or small inflorescences (2n = 54–58), but in most of the material varieties with small inflorescences differed little in chromosome number from those with medium-sized inflorescences. Five additional varieties with very small inflorescences had lower chromosome numbers (2n = 45–55).

Mutational studies onChrysanthemumcv. ‘Maghi ’with particular reference to induction of flower colour mutation

Agrica ◽  
2015 ◽  
Vol 4 (2) ◽  
pp. 93
Author(s):  
Atul Batra ◽  
A.K. Dwivedi
Keyword(s):  
Flower Colour ◽  
Colour Mutation

Effects of recessive white plumage colour mutation on hatchability and growth of quail hatched from breeders of different ages

2004 ◽  
Vol 45 (6) ◽  
pp. 769-774 ◽  
Author(s):  
M. Petek ◽  
Y. Ozen ◽  
E. Karakas
Keyword(s):  
Plumage Colour ◽  
Different Ages ◽  
Colour Mutation ◽  
White Plumage

Dilute (d) coat colour mutation of DBA/2J mice is associated with the site of integration of an ecotropic MuLV genome

Nature ◽  
1981 ◽  
Vol 293 (5831) ◽  
pp. 370-374 ◽  
Author(s):  
Nancy A. Jenkins ◽  
Neal G. Copeland ◽  
Benjamin A. Taylor ◽  
Barbara K. Lee
Keyword(s):  
Coat Colour ◽  
Colour Mutation

A colour mutation in the Rhode Island red fowl

1934 ◽  
Vol 29 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Joseph P. Quinn
Keyword(s):  
Rhode Island ◽  
Colour Mutation
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