Genetic variation of Mytilus coruscus Gould (Bivalvia: Mytilidae) populations in the East China Sea inferred from mtDNA COI gene Sequence

2013 ◽  
Vol 50 ◽  
pp. 30-38 ◽  
Author(s):  
Jiji Li ◽  
Yingying Ye ◽  
Changwen Wu ◽  
Pengzhi Qi ◽  
Baoying Guo ◽  
...  
Keyword(s):  
Genetic Variation ◽  
East China Sea ◽  
Gene Sequence ◽  
Coi Gene ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
Mytilus Coruscus ◽  
Mtdna Coi

The genetic divergence of Oratosquilla oratoria between the East China Sea and Yellow Sea: physical barrier and possible local adaptation

2017 ◽  
Vol 99 (3) ◽  
pp. 631-638
Author(s):  
Wenbin Zhu ◽  
Xinwei Du ◽  
Zhiqiang Han ◽  
Hanxiang Xu
Keyword(s):  
Local Adaptation ◽  
East China Sea ◽  
Yellow Sea ◽  
The Yellow Sea ◽  
Coi Gene ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
Oratosquilla Oratoria ◽  
Genetic Break

In order to confirm the genetic relationship between the Yellow Sea and East China Sea populations of mantis shrimps Oratosquilla oratoria, fragments of mitochondrial DNA COI gene samples were analysed. A total of 212 individuals from nine localities in the East China Sea and Yellow Sea were collected and 108 haplotypes were detected. Neighbour-joining analysis revealed a complete genetic break between the Yellow Sea and East China Sea, which was consistent with the previous mtDNA 16S rRNA. Pleistocene isolation and the current physical barrier were responsible for the complete genetic break between the East China Sea and Yellow Sea. Furthermore, local adaptation in the COI gene may also be contributed to by the genetic differentiation between the populations of the Yellow Sea and East China. The different Ka/Ks ratios between the two clades may reflect different selection pressures and local adaptation on the fragment of COI gene.

Morphology and molecular analyses of a newClytiaspecies (Cnidaria: Hydrozoa: Campanulariidae) from the East China Sea

2014 ◽  
Vol 95 (2) ◽  
pp. 289-300 ◽  
Author(s):  
Jinru He ◽  
Lianming Zheng ◽  
Wenjing Zhang ◽  
Yuanshao Lin ◽  
Wenqing Cao
Keyword(s):  
New Species ◽  
East China Sea ◽  
Coastal Waters ◽  
Phylogenetic Analyses ◽  
Coi Gene ◽  
East China ◽  
The East China Sea ◽  
Separate Species ◽  
Molecular Analyses ◽  
China Sea

The near-cosmopolitan genusClytiais abundantly found in coastal waters, but difficulties of identification in this genus make nearly all species records of medusae suspect. Complex life histories, ambiguous taxonomic characters, and phenotypic plasticity pose serious problems for accurate species-level identifications and future revisions ofClytiaspecies. In the present study, morphological investigations and molecular analyses ofClytiaspecimens from the coastal waters of the East China Sea revealedClytia gulangensissp. nov. as a new species. DNA barcoding based on the mitochondrial cytochrome oxidase I (COI) gene supported the new species as a separate species withinClytia, and phylogenetic analyses based on mitochondrial 16S rDNA and nuclear 18S rDNA further confirmed this new species to be a distinct lineage. Moreover, detailed observation of medusae and polyps of this species showed sufficient morphological differences from otherClytiaspecies for a diagnosis. Our results indicated that life cycle and DNA-based studies should be a standard approach in future biodiversity investigations ofClytiaspecies.

The East China Sea Seafloor Observatory and its upgraded project

2011 ◽  
Author(s):  
Huiping Xu ◽  
Changwei Xu ◽  
Rufu Qin ◽  
Yang Yu ◽  
Shangqin Luo ◽  
...  
Keyword(s):  
East China Sea ◽  
East China ◽  
The East China Sea ◽  
China Sea ◽  
Seafloor Observatory
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