The response of the superoxide dismutase （SOD） activities of earthworm （Eisenia fetida） to soil plumbum （Pb） pol ution was studied in the artificial soil test. The results indicated that the SOD activity in eart...The response of the superoxide dismutase （SOD） activities of earthworm （Eisenia fetida） to soil plumbum （Pb） pol ution was studied in the artificial soil test. The results indicated that the SOD activity in earthworm exposed to low-concentra-tion Pb declined on the 5th day of acute toxicity test, while that exposed to high-concentration Pb increased by different extents. On the 15th day, the SOD activity increased slightly along with soil Pb concentration increasing.展开更多
[Objective] This study aimed to understand the species and behaviors of flower-visiting insects on Mussaenda pubescens Ait.f.in the Mount Emei National Nature Reserve.[Method] The species,visiting frequency,visiting t...[Objective] This study aimed to understand the species and behaviors of flower-visiting insects on Mussaenda pubescens Ait.f.in the Mount Emei National Nature Reserve.[Method] The species,visiting frequency,visiting time and behaviors of flower-visiting insects on M.pubescens were studied by collection,identification and image capture.[Result] The flower-visiting insects on M.pubescens in the Mount Emei covered total 26 species with 21 species from Lepidoptera,2 species from Hymenoptera,and 3 species from Diptera.Thus,Lepidoptera were the main group of pollinators for c in the Mount Emei National Nature Reserve.The daily activity rhythms of Lepidoptera,Hymenoptera and Diptera showed different characteristics,and they were characterized by single-peak type and double-peak type.[Conclusion] This study will provide certain theoretical basis for studies on the diversity of flower-visiting insects on plants in the Mount Emei National Nature Reserve.展开更多
基金Supported by Science Research Program of the Department of Education of SichuanProvince(11ZA233)~~
文摘The response of the superoxide dismutase （SOD） activities of earthworm （Eisenia fetida） to soil plumbum （Pb） pol ution was studied in the artificial soil test. The results indicated that the SOD activity in earthworm exposed to low-concentra-tion Pb declined on the 5th day of acute toxicity test, while that exposed to high-concentration Pb increased by different extents. On the 15th day, the SOD activity increased slightly along with soil Pb concentration increasing.
文摘[Objective] This study aimed to understand the species and behaviors of flower-visiting insects on Mussaenda pubescens Ait.f.in the Mount Emei National Nature Reserve.[Method] The species,visiting frequency,visiting time and behaviors of flower-visiting insects on M.pubescens were studied by collection,identification and image capture.[Result] The flower-visiting insects on M.pubescens in the Mount Emei covered total 26 species with 21 species from Lepidoptera,2 species from Hymenoptera,and 3 species from Diptera.Thus,Lepidoptera were the main group of pollinators for c in the Mount Emei National Nature Reserve.The daily activity rhythms of Lepidoptera,Hymenoptera and Diptera showed different characteristics,and they were characterized by single-peak type and double-peak type.[Conclusion] This study will provide certain theoretical basis for studies on the diversity of flower-visiting insects on plants in the Mount Emei National Nature Reserve.
