Chinese scientists have led the construction of a map of the origin and diffusion of the global sea masse
Last Update: 2021-02-23
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17th, Nature-Communication published online the latest research results of Lin Qiang, a researcher at the South China Sea Oceanographic Research Institute of the Chinese Academy of Sciences, in cooperation with the Kunming Institute of Zoology of the Chinese Academy of Sciences and the University of Constance in Germany. They expounded the characteristics of the global sea mass bio-geographic pattern and its diversity formation mechanism, constructed a "one-map" of the global sea mass origin and diffusion route, and provided an important research paradigm for the study of the diffusion and diversity evolution of global marine life. Lin Qiang, who led the research program at
, said the study, which looked at the global sea mass, identified for the first time the origin center of the indo-Australian islands in the Indo-Pacific intersection, and originally revealed the space-time characteristics and ecological adaptation and evolution mechanisms of the global diffusion path of the sea horse driven by geological and ocean currents, and put forward a new view of the Indian-Pacific mass entering the Atlantic Ocean from the Guttis Sea and the Cape of Good Hope in South Africa.
Unlike land-based organisms, the origin of marine life and the formation of global diffusion mechanisms and biodiversity have been the core scientific issues that have been controversial internationally, and there has been a lack of research on the global oceanic scale in terms of the global diversity formation of marine life and its driving mechanisms.
" Sea horse swimming ability is weak, individual diffusion depends on geological activity and ocean currents, and the diffusion process is accompanied by a wealth of esopora differentiation, such as size, thorn differentiation and body color, so the sea horse has a natural advantage in exploring the global mechanism of marine life diffusion and diversity formation. Lin Said that the sea horse has been widely concerned and loved because of its unique size and "male parenting" behavior.
, the sea horse swimming ability is very weak, but widely distributed around the world, 41 species of sea horse distributed in the global temperating zone and tropical shallow sea, of which, in the Indo-Pacific intersection has the highest level of biodiversity. By studying the genomics of 21 dominant sea horses in the world, the scientists expounded for the first time the origin center of the sea mass and the diffusion pattern and space-time path characteristics at the global level, and revealed the mechanism of trait evolution in the formation of sea mass diversity.
researchers have confirmed that the sea mass originated in the Indo-Australian Islands about 20 to 25 million years ago and gradually spread to the Indian Ocean; Different routes entered the Atlantic Ocean: about 13.3 million years ago, one sea-horse ancestor entered the North Atlantic through the yet-to-be-closed Guttis Sea;
The researchers simultaneously stated that the formation of the Sea mass diversity centre in the Indo-Pacific Interchange Zone was the result of a dual role of "source" and "convergence": the sea horse had produced a large number of new species after the origin of the Indo-Australian Islands, while the closure of the Guttis Sea had led to the accelerated generation of new species of the sea horse and its reverse diffusion back to its place of origin, further increasing the diversity of species in the Indo-Australian Interchange.
researchers also found that the sea horse has evolved several times in the course of global diffusion to form the body's barbed-like character, which can effectively improve the sea-horse's defense against predators, and through gene editing technology for the first time found the key genes that regulate the production and differentiation of sea-horse echithnos. It is reported that in the process of global diffusion of the sea horse, some species have a significant differentiation of nature.
This study provides an important research paradigm for exploring the law of migration and evolution of international ocean living resources from the Indo-Pacific Sea to the Atlantic Ocean, and provides new ideas and insights for the follow-up to reveal the diffusion of global marine life and its mechanism of diversity evolution. (Source: Zhu Hanbin Qin Geng, China Science Journal)
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