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Zhang E.,CAS Wuhan Institute of Hydrobiology | Zhang M.,Nanjing Institute of Environmental Sciences | Han Y.-Q.,Guangxi Institute of Fisheries
Zootaxa | Year: 2011

A new garrain genus and species are described from a tributary of the Zuo-River of the Pearl River drainage in Guangxi Province, South China. Cophecheilus, new genus, is separated from all other Asian garrains by its uniquely modified oromandibular morphology; i.e., rostral cap with a shallow, arched, subdistal depression extending almost the full length of its ventral margin; upper lip greatly reduced to a thin membranous fold medially adnate to the upper jaw, but reflected slightly from its distal margin, and laterally produced into a frenum connecting the upper jaw with the lower lip. The new species, Cophecheilus bamen, has an inconspicuous longitudinal black stripe extending along each side of the body. Copyright © 2011 Magnolia Press.

Gan X.,Guangxi Institute of Fisheries
Dong wu xue yan jiu = Zoological research / "Dong wu xue yan jiu" bian ji wei yuan hui bian ji | Year: 2013

This study describes a new blind barbine fish species, Sinocyclocheilus anshuiensis sp. nov. discovered based on five specimens collected from a cave in Luolou town, Lingyun County, Guangxi, China, in June and July 2012. Sinocyclocheilus anshuiensis is distinguished from other species of Sinocyclocheilus by having the following combination of characteristics: dorsal fin with 7 branched rays, last unbranched dorsal-fin ray weak with serrations on posterior edge of its lower part; pelvic-fin origin anterior to dorsal-fin origin; dorsal profile of head sharply uplift, a forward flesh tuber present on frontal; body covered with scales, and lateral line with 34-38 scales, lateral line scales are as big as their neighbor scales; caudal peduncle with developed fresh crests.

Wang Y.,Shanghai Ocean University | Wang Y.,City University of Hong Kong | Hu M.,Shanghai Ocean University | Hu M.,City University of Hong Kong | And 4 more authors.
Science of the Total Environment | Year: 2014

The combined effects of DO and TiO2 (mixed rutile/anatase phase, 7/3) on immune responses in Perna viridis were examined. Mussels were exposed to six combinations of oxygen levels (hypoxia: 1.5mgO2l-1, normoxia: 6.0mgO2l-1) and TiO2 concentrations (0, 2.5mgl-1 and 10mgl-1) for 216h. Mussels were sampled after 24h, 48h, 120h and 216h, and immune parameters of hemocytes, including mortality, phagocytosis, non-specific esterase, ROS production, lysosomal content and total hemocyte count were investigated using flow cytometric assay. Hemocyte mortality was higher under hypoxia than normoxia, and increased with TiO2 concentrations, but no interaction was found between DO and TiO2. Phagocytosis was reduced under hypoxia and decreased with TiO2 exposure, and the interactive effect between time and TiO2 was observed. The percentage of hemocytes showing non-specific esterase activity was lower under hypoxia, and decreased as TiO2 concentration increased with the significant interactive effect of DO and TiO2. ROS production and lysosomal content were lower under hypoxia and reduced as concentration of TiO2 increased, and interactive effect of DO and TiO2 on ROS was evident. THC was significantly affected by the interactive effect between TiO2 and DO, with higher values under normoxia in the presence of TiO2. The present study demonstrated that immune functions of P. viridis were influenced by both nano-TiO2 and hypoxia with some synergistic effects between the two stressors. This implies that DO has to be considered in the evaluation of the toxicity of nano-materials to bivalves. © 2013 Elsevier B.V.

Yang J.,Guangxi Teachers Education University | Wu T.-J.,Guangxi Institute of Fisheries | Yang J.-X.,CAS Kunming Institute of Zoology
Environmental Biology of Fishes | Year: 2012

A new cave-dwelling species, Triplophysa macrocephala sp. nov. is described based on specimens collected from a karst cave in Renguang village, Lihu Town, Nandan County, Guangxi Zhuang Autonomous Region, China. The new species can be distinguished from its congeners by possessing the following combination of characters: pectoral fin not reaching beyond pelvic-fin origin; caudal fin forked; body smooth or scaleless; dorsal-fin origin anterior to pelvic-fin origin, edge of dorsal fin truncate; dorsal fin with eight branched rays; anal fin with five branched rays; eye small and vestigial; lower jaw arched with a median notch; air-bladder wrapped in bony capsule, lateral enlarged, posterior chamber of air-bladder degenerated. © 2011 Springer Science+Business Media B.V.

Wu Y.-R.,CAS Institute of Botany | Gong Q.-F.,CAS Institute of Botany | Fang H.,CAS Institute of Botany | Liang W.-W.,Guangxi Institute of Fisheries | And 2 more authors.
Fish and Shellfish Immunology | Year: 2013

The paper describes the effect of a diet supplemented with the Chinese traditional herbal medicine Sophora flavescens on the immunity and disease resistance of an Oreochromis niloticus GIFT strain. Experimental diets containing 0.025%, 0.050%, 0.100%, 0.200%, and 0.400% S. flavescens, as well as a control group without S. flavescens were used. We tested the non-specific humoral immune responses (lysozyme, antiprotease, and complement) and cellular immune responses (reactive oxygen species and nitrogen species production and myeloperoxidase), as well as disease resistance against Streptococcus agalactiae. S. flavescens supplementation at all dose significantly enhanced serum lysozyme, antiprotease, and natural hemolytic complement activity. Similarly, all S. flavescens doses enhanced cellular myeloperoxidase activity. The increased production of reactive oxygen species and reactive nitrogen intermediates by peripheral blood leucocytes was observed in most of the treatment groups throughout the test period. The fish fed 0.100% S. flavescens had a percent mortality of 21.1% and a relative percent survival of 73.3% compared with the group fed the basal diet during the S. agalactiae challenge. The results suggest that S. flavescens can be recommended as a tilapia feed supplement to enhance fish immunity and disease resistance against S. agalactiae. © 2012 Elsevier Ltd.

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