干旱区生态环境知识资源中心(Arid): Effects of of Habitats and Pesticides on Aerobic Capacity and Survival of Soil Fauna

Arid

	Effects of of Habitats and Pesticides on Aerobic Capacity and Survival of Soil Fauna
	G. TRIPATHI; B. M. SHARMA
来源期刊	Biomedical and Environmental Sciences
ISSN	0895-3988
出版年	2005
卷号	18 期号:3 页码:169-175
英文摘要	Objective Faunal health is largely dependent on their soil environment and available litter quality. So the effects of different soil habitats and pesticides on citrate synthase (CS) activity of soil fauna and its population were studied. Methods The soil animals were collected from different pedoecosystems for habitat study. Whereas Vigna radiata based system was selected for pesticidal observations. The field was divided into five equal plots for control and treatment of gamma-BHC, quinalphos, carbaryl and cypermethrin. Soil fauna was collected by quadrat method and extracted by Tullgren funnel. Individuals of a species having similar sizes were collected for the estimation of CS activity. They were homogenized and fractions were obtained by differential centrifugation. The activity of CS was assayed spectrophotometrically. Results Citrate synthase (CS) activity of beetle (Rasphytus fregi), woodlouse (Porcellio laevis) and centipede (Scolopendra morsitans) varied significantly with respect to changes in different soil habitats. Though the CS activity of R. fregi, P. laevis, and S. morsitans differed among themselves but the highest activity of CS in these animals was in V. radiata and lowest in A. nilotica based pedoecosystem. The aerobic capacity of centipede was maximum followed by woodlouse and beetle. The treatment of gamma-BHC, quinalphos, carbaryl and cypermethrin significantly reduced the CS activity of these animals. gamma-BHC showed maximum reduction in CS activity indicating highly toxic effect of organochlorine on aerobic metabolism of soil fauna. However, minimum reduction was observed in response to carbaryl (in beetle) or cypermethrin (in woodlouse/centipede) leading to impairment of aerobic capacity. The differences in pesticide effects might be assigned to the differences in chemical nature of pesticides and their interactions with below-ground fauna. Treatment of gamma-BHC and quinalphos reduced the population of Acari, Coleoptera, Collembola, other arthropods as well as total soil fauna. Acari was least affected by gamma-BHC and maximally affected (72%) in response to quinalphos. The effect of gamma-BHC was fairly similar on Coleoptera, Collembola, other arthropod and total soil fauna suggesting almost similar sensitivity to this pesticide. Likewise, quinalphos was similarly effective on Collemobola and other soil arthropods. Application of carbaryl decreased Acari and Coleoptera population but increased Collembola, other arthropods and total faunal populations. However, application of cypermethrin significantly reduced the population of Acari, Coleoptera, Collembola and total soil fauna and increased the population of other soil arthropods. In both the cases, acarine population was least affected. Conclusion The observations show the habitat-specific variation in aerobic capacity of soil fauna. However, pesticide-dependent loss in population might be due to impairment of aerobic capacity of soil inhabiting animals in desert.
英文关键词	Citrate synthase Habitat Pesticide Soil fauna and desert
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	General & Internal Medicine
CSCD记录号	CSCD:2129530
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334896
作者单位	G. TRIPATHI, Department of Zoology, J. N. Vyas University, India.; B. M. SHARMA, Department of Zoology, J. N. Vyas University, India.
推荐引用方式 GB/T 7714	G. TRIPATHI,B. M. SHARMA. Effects of of Habitats and Pesticides on Aerobic Capacity and Survival of Soil Fauna[J],2005,18(3):169-175.
APA	G. TRIPATHI,&B. M. SHARMA.(2005).Effects of of Habitats and Pesticides on Aerobic Capacity and Survival of Soil Fauna.Biomedical and Environmental Sciences,18(3),169-175.
MLA	G. TRIPATHI,et al."Effects of of Habitats and Pesticides on Aerobic Capacity and Survival of Soil Fauna".Biomedical and Environmental Sciences 18.3(2005):169-175.