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The scyphozoan Aurelia aurita (Linnaeus) s. l., is a cosmopolitan species-complex which blooms seasonally in a variety of coastal and shelf sea environments around the world. We hypothesized that ephyrae of Aurelia sp.1 are released from the inner part of the Jiaozhou Bay, China when water temperature is below 15°C in late autumn and winter. The seasonal occurrence, growth, and variation of the scyphomedusa...
In East Asian waters, concern about giant jellyfish blooms, including Nemopilemanomurai (Cnidaria: Scyphozoa: Rhizostomeae), has increased in recent decades. Based on surveys in 2012 and 2013, as a part of the Chinese Jellyfish 973 Program, we investigated the life cycle in situ of the planktonic stages of this species in the Yellow Sea and the East China Sea. We found the following results: (1)...
Creation of new genes and functions is a central feature of evolution. Duplication of existing genes has long been assumed to be the source of new genes, but the precise mechanism has remained unclear. One suggestion is that new genes are created via temporary amplifications, which simultaneously increase both the selective advantage of weak, pre-existing secondary functions and the target for optimizing...
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