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Polyculture of the lined seahorse,hippocampus erectus Perry,1810 with two species of macroalgae in aquaria

Acta Oceanologica Sinica 2010年第1期29卷 26-32页

作者： XU Yongjian LIN Junda CHEN Shun Vero Beach Marine Laboratory Florida Institute of Technology Vero Beach FL 32963 USA Key Laboratory of Applied Marine Biotechnology Ministry of Education Ningbo UniversityNingbo 315211 China

A two-month study was conducted to test the effects of macroalgae on the growth and survivorship of juvenile lined seahorse （Hippocarapus erectus） in aquaria. Twenty-day old seahorses were cultured in the tanks with green alga Chaetomorpha linum, red alga Gracilaria tikvahiae, green plastic artificial plant （stargrass）, and black plastic net, respectively. Increases in wet mass and standard length for the seahorses were significantly higher in the tanks with macroalgae than those without macroalgae. The seahorse survivorships in the two macroalgal treatments were also significantly higher than those of the two treatments without macroalgae. In the treatments with macroalgae, the DO and pH were higher than those without marcoalgae. During the experiment, the color of seahorses was changed to certain extent. In the green background （the treatments with C. linum and stargrass）, 24.1% 28.4% of black seahorses decreased over time; whereas in the black （plastic net） or brown （G. tikvahiae） background treatments, 14.1% 16.3% of yellow seahorses decreased over time, for matching that of the background. Furthermore, the survival rate of seahorse was correlation with DO and pH, and strong correlation with standard length, wet mass and CF. Polyculture with macroalgae, survival rates of seahorse were higher than without macroaglae.

关键词： hippocampus erectus Chaetornorpha linum Gracilaria tikvahiae growth rate survival rate water quality in aquarium

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Genome-wide evolution of MAPKs family and their expression in response to bacterial infection in seahorse hippocampus erectus

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Journal of Oceanology and Limnology 2021年第6期39卷 2309-2321页

作者： Kai WANG Xin WANG Qiang ZOU Han JIANG Rongrong ZHANG Yanan TIAN Lele ZHANG Qiang LIN School of Agriculture Ludong UniversityYantai 264025China CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Yantai Branch of Shandong Technology Transfer Center Chinese Academy of SciencesYantai 264003China University of Chinese Academy of Sciences Beijing 100049China

Seahorses have evolved many unique biological traits,including a male brood pouch,the absence of caudal and pelvic fins,and the lack of spleen and gut-associated lymphatic *** mitogenactivated protein kinases(MAPKs)are known to be involved in various important biological processes including growth,differentiation,immunity,and stress ***,we hypothesized that the adaptive evolution and expression of the MAPK gene family in seahorse may differ from those of other teleost *** identified positive selection sites in the erk2,erk5,jnk1,and p38αMAPK genes of the lined seahorse hippocampus erectus and tiger-tailed seahorse hippocampus comes.A novel expression profile of MAPK cascade genes was found in seahorse larvae during the first day after birth based on the RNA-seq data of ***,which refl ected vital signs of immune response to its parental immune *** expression patterns of the four positively selected MAPK genes were analyzed following the bacterial challenge of Vibrio fortis,revealing their upregulation pattern in brood pouch and other immune *** study enriched our knowledge of the evolution of the *** MAPK subfamilies,and could help better understanding the functional role of MAPKs in teleosts.

关键词： mitogen-activated protein kinases(MAPKs) hippocampus erectus genomic structure positive selection immune regulation

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