The present paper deals with three new species of the genera Phorbia,Pegoplata and Pegomya from Yunnan Province,China,namely Phorbia fani sp nov , Pegoplata lengshanensis sp nov.and Pegomya yunnane...The present paper deals with three new species of the genera Phorbia,Pegoplata and Pegomya from Yunnan Province,China,namely Phorbia fani sp nov , Pegoplata lengshanensis sp nov.and Pegomya yunnanensis sp nov.All the type specimens are deposited in Institute of Entomology,Shenyang Normal University,Shenyang.展开更多
Evidence is provided to support the hypothesis that the taxa Pseudogyrinocheilus, Semilabeo, and Discolabeo form a monophyly in which Semilabeo and Discolabeo are sister groups, and both together constitute the sister...Evidence is provided to support the hypothesis that the taxa Pseudogyrinocheilus, Semilabeo, and Discolabeo form a monophyly in which Semilabeo and Discolabeo are sister groups, and both together constitute the sister group of Pseudogyrinocheilus. On the basis of phylogenetic relationships of Pseudogyrinocheilus to others, it is proposed that the taxon Pseudogyrinocheilus be a valid genus. In addition, comments are made on importance of some features used in the traditional taxonomy of the subfamily Labeoninae.展开更多
Objective] The research aimed to study the characteristics of nitrogen and phosphorus pollution of 30 natural outcrop springs in Wudalianchi, which provides a theoretical basis for the sustainable development and util...Objective] The research aimed to study the characteristics of nitrogen and phosphorus pollution of 30 natural outcrop springs in Wudalianchi, which provides a theoretical basis for the sustainable development and utilization and protection of Wudalianchi natural mineral resources. [Method] Choosing the 30 natural outcrop spring representatives in different regions, samples were collected in low water period, normal water period, wet period respectively, and the content of nitrogen, phosphorus and other contaminants in the samples were determined. Besides, the pollution characteristics of nitrogen and phosphorus in Wudalianchi natural outcrop spring were analyzed. [Result] The 30 natural outcrop spring in Wudalianchi area were seriously polluted by nitrogen. Total nitrogen and nitrate nitrogen were the main forms of nitrogen pollution. The content of total phosphorus and ammonia nitrogen were low. [Conclusion] The natural outcrop spring is mainly caused by agricultural non-point source pollution.展开更多
文摘The present paper deals with three new species of the genera Phorbia,Pegoplata and Pegomya from Yunnan Province,China,namely Phorbia fani sp nov , Pegoplata lengshanensis sp nov.and Pegomya yunnanensis sp nov.All the type specimens are deposited in Institute of Entomology,Shenyang Normal University,Shenyang.
文摘Evidence is provided to support the hypothesis that the taxa Pseudogyrinocheilus, Semilabeo, and Discolabeo form a monophyly in which Semilabeo and Discolabeo are sister groups, and both together constitute the sister group of Pseudogyrinocheilus. On the basis of phylogenetic relationships of Pseudogyrinocheilus to others, it is proposed that the taxon Pseudogyrinocheilus be a valid genus. In addition, comments are made on importance of some features used in the traditional taxonomy of the subfamily Labeoninae.
基金Supported by Basic Scientific Research Program of Heilongjiang Province~~
文摘Objective] The research aimed to study the characteristics of nitrogen and phosphorus pollution of 30 natural outcrop springs in Wudalianchi, which provides a theoretical basis for the sustainable development and utilization and protection of Wudalianchi natural mineral resources. [Method] Choosing the 30 natural outcrop spring representatives in different regions, samples were collected in low water period, normal water period, wet period respectively, and the content of nitrogen, phosphorus and other contaminants in the samples were determined. Besides, the pollution characteristics of nitrogen and phosphorus in Wudalianchi natural outcrop spring were analyzed. [Result] The 30 natural outcrop spring in Wudalianchi area were seriously polluted by nitrogen. Total nitrogen and nitrate nitrogen were the main forms of nitrogen pollution. The content of total phosphorus and ammonia nitrogen were low. [Conclusion] The natural outcrop spring is mainly caused by agricultural non-point source pollution.
