In today's entry is what tigers like the most, which will discuss another controversial topic, which appears every move in different fora, and that is difficult found clear answer. The theme will
cichlid, which knocks their colors, or at worst surprises. However, what is most intriguing about it, its origins shrouded in a veritable mystery. Or is it simply a variant of the colorful, unusual mutation, a mixture of two or more species, or perhaps an artificial creation straight from the Asian laboratory? Well ... I'll try to explain it:)
At the outset I'll just add for those who are first confronted with this issue that the subject is treated in its entirety and pielęgnicy niebieskołuskiej ( Rocio octofasciata ), and Rather, the supposed varieties of this fish, which has only a name given to her by American farmers - Electrtic Blue Jack Dempsey (abbreviated EBJD). Jack Dempsey - the name is used as a normal variant of the ocean determine pielęgnicy niebieskołuskiej. Electric Blue - This part of the name is amazing thanks to the appearance of the fish.
Thanks to the author of the text, Coleman'a Mr. Lawrence, for permission to translate the text and placing it on this blog:)
controversy, discussion and seeking the truth about the origin of the Electric Blue Jack Dempsey
Cooperation with dedicated Forum members bluejax.co.uk , in recent years has resulted in significant progress in understanding what is a fish with an informal name "Electric Blue Jack Dempsey." As for me, convoluted debate over whether this fish is a hybrid or a variety of colors, the absorbed and fascinated me. Over the years, appeared a lot of conflicting rumors and speculation, but usually it appeared that few of them were actually concrete and factual information. Construction of this page (bluejax.co.uk) helped us put together all this information together, so that each of us will be in a better and make your way to understand the phenomenon of these fish.
We have many conversations with the owners EBJD, growers, and laboratory techniques, and professors from universities. The talks were held by telephone as well as e-mail. The result was the clear conclusion that the only way to know the truth are the DNA test. With our "interrogation" we were unable to find a copy of the DNA tests, which have already been already performed. Jeff Rapps of tangledupincichlids.com commissioned such research in August 2005 and reluctantly agreed to provide copies of the test Brammah Martin (owner of the forum Bluejax). Martin said that the results of the sample are not sufficiently accurate. They show that in fact it belonged to R.. Octofasciata , but only in the line of the mother.
( see results! ).
In further exploration potential of laboratories that could perform more accurate tests, I found a dr. Prosanta Chakrabarty and sent him a copy of these results to the question whether a similar procedure can be repeated. Ironically, Dr Chakrabarty admitted that he was the one who conducted the DNA tests commissioned by Jeff Rapps. He also admitted, that carried out the complete DNA test and assured me that they agree completely with the DNA belonging to R. octofasciata . After inspection of the original test results found that in fact the study was comprehensive, but the majority was cut from a copy, because it was part of his doctoral dissertation.
decided, however, that should be carried out even one study of DNA in a separate laboratory, and we did it by dr. David Price (fishdnaid.com). Needed money has been collected by members of our group in less than a week. Dr. Price approached the task very precise and conscientious, often contacting me by e-mail about 3 or 4 in the morning from his laboratory. Talking with him, I sensed a real curiosity to explain the riddle of this species. It actually seemed to be something for him, which so far has not yet encountered, and something that was quite difficult for him to understand. At first reluctant to approach this to be a part of this project, but after several long conversations detailed in the end agreed to send him samples.
Yet that same night, provided me the necessary equipment, I could take samples. I took 4 slices from 4 different fins of fish. I took one segment of male and female varieties pielęgnicy niebieskołuskiej standard, as well as male and female of the "Electric Blue". In less than a week after sending them to the dr. Price, let me know that the results are ready, and shared his findings. These are his exact words:
"The experiment is terminated and no evidence to suggest that EB is a hybrid. This confirms what was said by Mr Chakrabarty.
I found the exact same sequence in each of the four samples sent to me. The samples of EB is not a shadow of the second sequence, which could come from another species. "
As clearly indicated, the results showed that all samples fit into the genre. These samples also corresponded to samples R. octofasciata that were already included in the file GenBank database of DNA from previous sekwencjonowań. What has been understated by doctors, however, was that these samples are compatible only with respect to genes from the download area of \u200b\u200bthe fish, so these results can not be read as a conclusive case. Why should we base conclusions on such a small part of the entire genome? Pie, who was taken into account, was chosen only because the gene sequences for R. octofasciata , as well as any other "suspicious" species could already be found in the GenBank database. Needed because of the comparisons, so it would be foolish to take samples from areas for which there would be no data.
So this was another test that showed that the Electric Blue Jack Dempsey is probably not a hybrid, but not in command of this eventually. This meant that there is still much to be done. That is more fun in the laboratory and more money to cover costs. There are various other methods of research, but I think that no matter how many tests are run, no matter how many hours you devote laboratories, skeptics will always remain skeptical of the theory of color variety. Those who support the "theory of hybrid" hard on his bet and the debate will not end until they made a complete mapping of the genomes of all suspect species which could be potential parents of a mysterious blue pielęgnicy. It would be a monumental task. To implement such a project would probably need tens of thousands of dollars and it would take many years. The only possibility to carry out faster and cheaper while maintaining the integrity and accuracy, it would be to engage a senior employee of a university, which benefit from state funds. Together with his disciples, so he could lead the professor in class all year long process of mapping the complete genome. This would be an interesting project, that could interest students and bring them great satisfaction. Now the only question is whether anyone knows of such a professor, who would be interested in this project? If so, Send away allthingsdempsey.com him and tell him that I would be excited and ready to work together on this.
While we wait to move our genetic project forward, a lot of debate about the possibility of the true origin of the fish known as the Electric Blue Jack Dempsey is still pending. The three species that most people consider it their parents fish is Nandopsis tetracanthus , Nandopsis haitiensis and Herichthys carpintis "Escondido". Each has a strikingly similar characteristics EBJD, although at first sight are two different worlds. Take, for example, N. tetracanthus and note the mosaic pattern on the face, the red stripe on the dorsal fin and a similar body shape. Let's look at N. haitiensis , and its amazingly similar shapes of the dorsal and anal fin, a popular Electric Blue. Also similar are young N. haitiensis which exhibit very intriguing off-white color, similar to fry Electric Blue Jack Dempsey. Finally, H. carpintis and its very unique set of designs and color, similar to that which presents a variety of Electric Blue. Despite this, all the speculation about the possible sources of hybridization and the different parent species involved in "production" of this fish is just pure speculation. There are stories of people who have successfully crossed R. octofasciata of H. carpintis , but the outcome in no way resembled the target fish.
I'm sure that many breeders tried to cross different species of cichlid niebieskołuską and if anyone was obtained from a fish-like Electric Blue, we would love to hear about it.
Although the mixing of different species of fish is usually condemned by the conscious aquarist, it is for some reason there is still a large market for the strangest hybrids. The question then arises: if the prices go back to colorful hybrids wielodolarowych visitor, then why the alleged creator of these fish and for many years the only breeder in the world - Hector Luzardo - he would lie about their origins, arguing that the fish is a hybrid of two species? He could make a fortune. These are the words Jeff Rapps, who knew Mr. Luzardo personally:
"The first keeper had nothing to gain by fabricating the public the origin of fish. I know him well. He is a painter by profession, is an honest man with strong family values. Told me years ago, its only merit is that he saw difference in some subjects with normal cichlid fry pair niebieskołuskich and grown up it. "
People who knew him well knew that Hector was an honest, hard-working father. But whether it is possible that Hector departed from this world deliberately leaving a mystery that will survive and remain to resolve for future generations? It is the judge must each of us alone.
Coleman Lawrence Willey Jr.
And that's all for now. And if you want to know exactly what the story says Hector Luzardo, patiently wait for the second part of the entry:)
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