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Hu J.,Xiamen University | Hong H.,Xiamen University | Li Y.,Xiamen University | Jiang Y.,Xiamen University | And 5 more authors.
Continental Shelf Research

Using the CTD data from four successive summer cruises during 2004-2007, this paper studies the variable temperature, salinity and water mass structures in the southwestern Taiwan Strait in summer. By applying the fuzzy clustering method to the collected CTD data, we classify the hydrographical structure as mainly having five major water masses in the studied area in summer. The variable hydrographical structure is especially demonstrated by the coastal upwelling, which occurred in the sea area near Dongshan with different scales, locations and intensities during the observation period of each cruise. Evident coastal upwelling appeared in the southwestern Taiwan Strait during July of 2005 and 2007. Numerical simulations from a POM-based, high resolution and three-dimensional model explain the observed variable hydrographical structures and show that the variability is largely associated with local wind conditions. © 2011 Elsevier Ltd. Source

Hong Z.,Xiamen University | Hong Z.,State Oceanic Administration | Lai Q.,State Oceanic Administration | Luo Q.,Fujian Institute of Oceanology | And 4 more authors.
International Journal of Systematic and Evolutionary Microbiology

A taxonomic study was carried out on bacterial strain H3T, which was isolated from the toxic marine diatom Pseudo-nitzschia multiseries. Cells of strain H3Twere Gram-stain-negative, rod-shaped, non-motile and capable of reducing nitrate to nitrite, but not denitrification. Growth was observed at NaCl concentrations of 1–9 %, pH 6–12 and 10–37 °C. It was unable to degrade aesculin or gelatin. The dominant fatty acids (>10 %) were C18 : 1ω7c/ω6c(summed feature 8) and C16 : 0. The respiratory ubiquinone was Q10. The major lipids were phosphatidylethanolamine, phosphatidylglycerol, an aminolipid and one unknown lipid, and the minor lipids were two phospholipids and three unknown lipids. The G+C content of the chromosomal DNA was 61.7 mol%. 16S rRNA gene sequence comparison showed that strain H3T was related most closely to Sulfitobacter donghicola DSW-25T (97.3 % similarity) and levels of similarity with other species of the genus Sulfitobacter were 95.1–96.9 %. The mean (±SD) DNA–DNA hybridization value between strain H3T andSulfitobacter donghicola DSW-25T was 18.0±2.25 %. The average nucleotide identity between strain H3T and Sulfitobacter donghicola DSW-25T was 70.45 %. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain H3T formed a separate clade close to the genus Sulfitobacter and was distinguishable from phylogenetically related species by differences in several phenotypic properties. On the basis of the phenotypic and phylogenetic data, strain H3T represents a novel species of the genus Sulfitobacter, for which the name Sulfitobacter pseudonitzschiae is proposed (type strain H3T = DSM 26824T = MCCC 1A00686T). © 2015 IUMS. Source

Wei-Ye L.,Xiamen University | Wei-Ye L.,Guangdong Entomological Institute South China Institute of Endangered Animals | Fang S.-H.,Fujian Institute of Oceanology | Wang Y.-Q.,Xiamen University
Zoological Science

The systematic position of the amphioxus species with dextral gonads distributed in the southeast Pacific and Indian Oceans has remained to be clarified due to the adoption of different names by different researchers. Mitochondrial (mt) DNA is generally considered to be a powerful molecular marker in taxonomic studies. For a reliable systematics of the amphioxi collected from the South China Sea, we sequenced the complete mtDNA from a single specimen and compared it with those of the other eight amphioxus species. The present mtDNA genome contains 13 protein-coding genes, 22 tRNA genes, and two rRNA genes, with the same gene order as those in Branchiostoma and Epigonichthys, which, however, is different from that in Asymmetron. Based on our morphological data (including measurements of some characters) and the features of the mt genome, together with the distribution records of the dextral-gonad amphioxi, we conclude that the present mtDNA sequence most likely represents that of E. cultellus. © 2014 Zoological Society of Japan. Source

Shih H.-T.,National Chung Hsing University | Ng P.K.L.,National University of Singapore | Fang S.-H.,Fujian Institute of Oceanology | Chan B.K.K.,Academia Sinica, Taiwan | Wong K.J.H.,Academia Sinica, Taiwan

The fiddler crab fauna (Brachyura: Ocypodidae: Uca) of China is reviewed. Thirteen species are recognised here, viz. Uca acuta (Stimpson, 1858), U. annulipes (H. Milne Edwards, 1837), U. arcuata (De Haan, 1835), U. borealis Crane, 1975, U. coarctata (H. Milne Edwards, 1852), U. crassipes (Adams & White, 1848), U. dussumieri (H. Milne Edwards, 1852), U. lactea (De Haan, 1835), U. paradussumieri Bott, 1973, U. tetragonon (Herbst, 1790), U. triangularis (A. Milne-Edwards, 1873), U. typhoni Crane, 1975, and U. vocans (Linnaeus, 1758). Two females of U. typhoni collected from southern Hainan Island represent the first record of this species from China and East Asia. Two males of U. tetragonon collected from southern Hainan also represent a new record for China. The Uca fauna of southern Hainan is biogeographically distinct being different from those of northern Hainan and continental China, with U. annulipes, U. tetragonon, U. typhoni, and U. vocans common in Southeast Asia. In addition, continental China also lacks some insular species such as U. coarctata, U. formosensis Rathbun, 1921, U. jocelynae Shih, Naruse & Ng, 2010, U. perplexa (H. Milne Edwards, 1837), and U. tetragonon which are common in the East Asian islands of Taiwan and the Ryukyus. Copyright © 2010 · Magnolia Press. Source

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