... After this absence with threats of eternal return, begin to take up the hobby, slowly and with good lyrics ...
As I said a few posts, the reason for having to leave out the fans during this time even though I can not sum it up in personal problems. After this downturn, "The Pothole", which has been choked me last year I take up the hobby in a definitive way (over easy).
I still have, is resumed, the development of the book but with everything that has been going pretty late (not yet reached 70 pages and much remains to be addressed).
not to leave it in good intentions and I rolled up and I am translating an article genetics, the content can not be taken entirely by right but I found it interesting to share. By not having completed it yet, put a small piece that is already translated.
GENETICS OF FISH FIGHTER OF SIAM, Betta splendens
HENRY M. WALLBRUNN
Department of Biology, University of Florida, Gainesville, Florida
First edition March 13, 1957
The Betta Splendens, commonly known as as the Siamese Fighting Fish is popular in aquariums in Western Europe and America about 35. The prior history of domestication and subsequent selective breeding dating back to its introduction in the West for about 60 or 70 years. Browse by aggressiveness, long fins and bright colors in this long period have produced a number of phenotypes, none of which is very similar to the wild form of short-finned slow rivers and flooded rice fields in Thailand (Smith 1945).
Bettas Aquarium is noted for its bright colors and varied. These are produced by three pigments, lutein (yellow), erythropterina (red) and melanin (black) (Goodrich, Hill and Arrick 1941) and fragmenting the light through small hexagonal crystals (Goodrich and Mercer 1934) giving steel blue, blue or green. Each type of pigment is contained in a different cell type, xanthóforas containing yellow, red and melanophores erythroforas black. No two chromatophores containing two pigments such as the xanthoerythóforas of Xiphophorus helleri. Reflective cells responsible for the iridescent blue and green iridescent are known as iridióforos or guanáforas and are more superficial than the other chromatophores.
Since pigment granules could be dispersed well in several pseudóforos branched or grouped in small dots in the center of the chromatophores, the color of a single fish could vary from a wide range of tones and could do so in a few seconds. Sick or stressed fish are weak and uniform range without dispersion of pigments, which, however, courting or fighting with other fish are at the opposite end.
In Bettas seem to There is also a complete continuity in tone from light brown to pure black. The same condition exists with respect to red and also about the colors produced by iridióforos.Su also infinite variety of phenotypes make it difficult to put into separating the classes, but the large screen made to display the correct method of approach and examine the apparent continuity falls into a few large blocks within which, however, still seem continuous. The difference between the groups long can tracer to the segregation of a few genes that we call elders.
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