In Proceedings of the National Academy of Sciences, scientists at Michigan State University show that gar (a freshwater, toothy fish) can show many evolutionary secrets. They can even show potential genetic blueprints for regeneration of limb in people.
Researchers knew that salamanders can redevelop complete limbs after elimination. Ingo Braasch and his team, on the other hand, was the first to research how gar regenerate complete fins. More essentially, the scientists aimed on how they regrow the endochondral bones inside their fins, which are the equivalent of human legs and arms.
“Gars are often believed as dinosaur fish due to their ancestor-resembling type of body,” Braasch claimed. “They are turning out to be a popular, new research organism for biomedical study, majorly due to the fact that the gar genome mostly resembles the human genome.”
Garfish has been dubbed as a “bridge species,” since its genome is same as that of both zebrafish (often employed as a genetic model for human medical enhancements) and humans, a study led by Braasch. Gar evolves slowly and has kept more ancestral components in their genome as compared to other fish. This indicates that together with serving as a bridge species to individuals, gar also is great connectors to the deep history.
On a related note, cichlids are a bunch of medium to small-sized fish that are omnipresent in freshwater. They are specifically notable in showing a wide series of behavioral and morphological specializations, such as different modes of parental care, comprising mouthbrooding. A number of species (majorly members of the genus Tilapia) are of considerable economic significance and have attained fame as culinary delicacies.
Cichlids have gone through rapid diversification in Africa, which is home to minimum 1100 species. This procedure has been particularly important in East Africa’s Rift Valley in the Great Lakes (Malawi, Lakes Tanganyika, and Victoria), where it is dubbed as the East African Radiation.