Abstract:
:The present investigation was carried out in Cachar district of Assam over a period of one year (January 2011 - December 2011) to understand the seasonal ecology of Acarina (Oribatida) in rice (Oryza sativa L.) cultivated fields. Population of Oribatida was found to be maximum during August 2011, both in no-tillage (6.32 ± 0.66 No./m2 x 100(2)) and tillage (5.30 ± 0.71 No./M2 x 100(2)) sites in Dorgakona area whereas the peak was recorded during August 2011, both in no-tillage (5.38 ± 0.75 No./m(2) x 100(2)) and tillage (4.69 ± 0.77 No./m2 x 100(2)) in Durby area of study sites. Least population was encountered during January 2011, in both no-tillage (0.98 ± 0.28 ± No./m2 x 100(2)) and tillage (0.98 ± 0.30 No/m2 x 100(2)) sites in Dorgakona area whereas the same was found during November 2011 in no-tillage (0.57 ± 0.31 No.m/2 x 100(2)) and in February 2011 in tillage (0.45 ± 0.21 No./m2 x 100(2)) sites of Durby area. Linear regression analysis with all the environmental variables showed positive and significant influence on the population dynamics whereas relative humidity (R2 = 0.26 p > 0.05) in Dorgakona no-tillage and tillage (R2 = 0.19 P > 0.05) sites and relative humidity in tillage site (R2 = 0.27 P > 0.05) in Durby area showed no influence. Multiple regression analysis showed that the combined effect of climatic variables having a significant influence (p < 0.05) on the oribatid mite population in no-tillage and tillage systems in both the study sites. Rainfall, relative humidity and temperature facilitated the soil moisture, microbial activity and litter decomposition, which in turn may favour the reproduction and growth rate of the species. Among microclimatic conditions all the parameters showed positive and significant influence (P < 0.05) on the population in no-tillage and tillage system on both the sites except pH which showed negative correlation with the population. One way ANOVA revealed significant difference (F = 6.53, P < 0.01) of the Oribatid population between the systems.
journal_name
J Environ Bioljournal_title
Journal of environmental biologyauthors
Singh LA,Ray DCsubject
Has Abstractpub_date
2015-01-01 00:00:00pages
319-23issue
1eissn
0254-8704issn
2394-0379journal_volume
36pub_type
杂志文章abstract::Quality of water is an important criterion for evaluating the suitability of water for irrigation and drinking. In the present study the analysis of water samples from different sources like open wells, bore wells, farm ponds and streams/rivers of twenty villages of Bantwal taluk of Dakshina Kannada district, South-we...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2007-07-01 00:00:00
abstract::The effect of different doses of anti-estrogenic chemical was studied in a cichlid Oreochromis niloticus on mortality, growth, sexual development and sex differentiation. Percent mortality (5, 10 and 10) appeared to be dose-dependent. All groups of tamoxifen (TA) treated fishes exhibited significant growth as compared...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2012-07-01 00:00:00
abstract::A study was conducted to find out the effect of different concentrations of Methyl parathion, an organophosphorus pesticide on soil bacterial population, soil respiratory activity and dehydrogenase activity, under laboratory conditions for a definite time period. The higher concentration (100 ppm) of Methyl parathion ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2009-05-01 00:00:00
abstract::This study has been conducted between years 2002-2008 in nearby Egirdir lake, which is acknowledged to be amongst the biggest fresh water lakes in Turkey. Within the scope of this study observations have been made on one of the cat species common in Turkey, Jungle Cat Felis chaus, its biology distribution, population ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2010-01-01 00:00:00
abstract::Effect of paper mill effluents on Phaseolus aureus Roxb was studied. The effluent significantly inhibited germination of root and shoot length. The bio-chemical injury does not appear spontaneously but with the increase in effluent treatment there is reduction in observed biochemical parameters (chlorophyll, protein, ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2005-06-01 00:00:00
abstract::Microcystis aeruginosa is generally dominant in many Mexican freshwater ecosystems interacting with zooplankton species. Hence, feeding and filtration rates were quantified for three cladoceran (Daphnia pulex, Moina micrura and Ceriodaphnia dubia) and three rotifer species (Brachionus calyciflorus, Brachionus rubens a...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2014-11-01 00:00:00
abstract::A Microcoleus chthonoplastes strain SC7B9002-1 isolated from microbial mats in tidal channels from San Carlos, Baja California Sur, Mexico was subjected to short- (15 days) and long-term (2 years) conservation assays in liquid nitrogen (-196 degrees C) using cryoprotective agents, such as 5% DMSO, 20% PVP-40, and 20% ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2011-07-01 00:00:00
abstract::The acute toxicity of unionized ammonia; nitrite and nitrate to the Indian major carp Catla catla (Hamilton) was determined using static and continuous flow through systems for 24 hours. The median lethal concentration (LC50) values for 24 h of ammonia (NH3-N), nitrite (NO2-N) and nitrate (NO3-N) were 0.045 mg/l, 120....
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2002-04-01 00:00:00
abstract::Relative susceptibility of three important mosquito vector larvae viz., Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus, prevalent in the arid region was determined against four organophosphates (malathion, fenitrothion, fenthion, temephos) and three synthetic pyrethroid (alphamethrin, deltamethrin and f...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2007-10-01 00:00:00
abstract::The aim of this study is to determine some physical and mechanical properties of Paulownia tomentosa wood grown in Turkey. The samples trees harvested from Kargi in Corum. Physical properties including air-dry density oven-dry density basic density swelling, shrinkage and oven-dry and air-dry thermal conductivity coef...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2010-05-01 00:00:00
abstract::Vertical distribution of polychaetes in a semi-enclosed brackishwater pond of Nethravathi estuary was studied for one year from February 2004 to January 2005. The semienclosed brackishwater pond is a shallow water body with an average depth of 1-1.5 m with an area of 12 ha having direct connection with the estuary whi...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2009-11-01 00:00:00
abstract::The present studies were conducted on the ability of males of the gray shrew, Notiosorex crawfordi to use tactile cues to detect and respond to changes in topographical features of their environment. The animals were videotaped, digitized, and analyzed through video recordings. All subjects showed habituation (decreas...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2006-05-01 00:00:00
abstract::Spergularia marina (Caryophyllaceae) is a halophytic species and widely distributed among the sea shores of Turkey. Its seeds maybe unwinged or winged. Laboratory experiments were conducted to determine the effects of salinity (0, 50, 100 and 500 mM NaCl) and temperature (10, 15, 25, 30, 35 degrees C) on seed germinat...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2008-11-01 00:00:00
abstract::The extract of ethanol, methanol and DMSO of pennyroyal leaves from Mugla Region (Turkey) were tested for antimicrobial activity against eleven bacterial and one yeast strain by disc diffusion method. Among the extracts assayed, the methanol extract of pennyroyal leaves exhibited significant antimicrobial activity aga...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2016-11-01 00:00:00
abstract::An important role of oxidative stress for the development of vascular and neurological complications has encouraged us to undertake a study to assess the oxidative stress induced nerve conduction deficits among cigarette smokers. Eighteen regular male cigarette smokers and twenty nine male non-smokers were diagnosed f...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2011-01-01 00:00:00
abstract::Lasiodiplodia theobromae, a common tea (Camellia sinensis) pathogen, usually does not sporulate or sporulates poorly in common media, which makes spore production difficult. In this study the effects of culture media, carbon source, nitrogen source, temperature, pH and light on mycelial growth and sporulation were eva...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2008-05-01 00:00:00
abstract::The purpose of this study is to investigate the factors that cause malformed frogs in upstream Kaoping river (KP site) and Tungkang river (T site) of Southern Taiwan. In this experiment, the activities of monooxygenase (MO), glutathione-S-transferase (GST), acetylcholinesterase (AchE) as well as the concentration of v...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2011-11-01 00:00:00
abstract::The present study examined a total of 446 samples of Ompok bimaculatus and describes the condition factor, gonadosomatic index, length-length relationships, sex ratio, size at first maturity. The regression parameter 'b' ranged from 3.06 to 3.76 (r2 > 0.90). During the pre-monsoon, the allometric coefficient 'b' of th...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2013-11-01 00:00:00
abstract::Creating precise climatic maps (temperature and precipitation map especially) on small areas such as drainage basins or landform units is always very useful for ecology of plants, distribution of vegetation and also different types of agricultural land. The geographic information system (GIS) analysis of several key-f...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2012-04-01 00:00:00
abstract::Genomic DNA methylation is one of the most important epigenetic modifications in eukaryotes play vital role in development of severe disease like cancer. Many techniques used for assessment of DNA methylation, bisulfite treatment followed by methylation specific polymerase reaction (MSP) are one of them, which introdu...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2013-07-01 00:00:00
abstract::Alcoholic extract of whole fruit of Momordica charantia was prepared. Adult healthy albino rats were divided into four groups and received a dose of 6 mg/l00 gm. body weight of alloxan monohydrate. Animals of group I served as diabetic control group. The animals of II, III, and IV groups received 25 mg, 50 mg and 75 m...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2008-01-01 00:00:00
abstract::The objective of the present study is to investigate the mechanism of tetracyclines and macrolieds absorption on Taihu Lake sediments. In the study, batch technique was used to study the adsorptive behavior of three pharmaceutical antibiotics (tetracycline, oxytetracycline and tylosin) from several sediments of Taihu ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2016-09-01 00:00:00
abstract::Duckweed (Lemna minor) a small vascular plant, grows rapidly, is sensitive to a wide variety of toxicants and is easy to culture. A method is described that measures duckweed frond growth, chlorophyll, protein and biomass content as indicator of growth inhibition. The physico-chemical analysis of anaerobically treated...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2004-01-01 00:00:00
abstract::Vegetative and reproductive phenology of Barringtonia acutangula, a floodplain tree species was studied at Chatla floodplain, Assam North East India with the aim to investigate vegetative and reproductive phenology under stressful environment of seasonal submergence and to assess the impact of environmental variables ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2016-03-01 00:00:00
abstract::The present study was carried out to evaluate the protective role of lycopene on cytotoxicity induced by mercury in albino mice. The animals were randomly divided into seven groups. Group I (control) were treated with tap water Group II (positive control) were treated with 20 mg kg(-1) d(-1) lycopene, Group III were t...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2009-09-01 00:00:00
abstract::Extracts of neem (Azadirachta indica A.) and mata-raton (Gliricidia sepium) leaves were used as insect repellent during organic cultivation of tomato plants (Solanum lycopersicum) and were compared with untreated plants or plants treated with lambda-cyhalothrin (chemical treatment). The best developed tomato plants we...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2014-09-01 00:00:00
abstract::The fungal beta-D-glucan is a biological response modifier (BRM), but a major obstacle to the clinical utilization of these BRMs is their relative insolubility in aqueous media. We made soluble sulfated-beta-glucan (SGL) from insoluble beta-glucan (IGL) by sulfation method. In single dose toxicity study of SGL for 7 d...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2012-11-01 00:00:00
abstract::The present study has been undertaken to evaluate physico-chemical parameters (pH, temperature, dissolved oxygen, free carbon dioxide, alkalinity and hardness) and zinc concentration in water bodies in and around Jaipur. Water samples from Jalmachal Lake, Nevta Lake, Amer Lake and Ramgarh Lake were analysed. Results r...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2003-04-01 00:00:00
abstract::Analysis of land use and land cover changes in Ukraine were evaluated with special attention given to the interaction of land and water resources. The rational fresh water management in agriculture under future climate change conditions is of great importance. The hydrological regime of a river has huge impact on the ...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2015-01-01 00:00:00
abstract::The boundaries of landscape policies often coincide with political or economic boundaries, thus creating a situation where a unit of landscape protection or management reflects more its present political status than its historico-geographical situation, its historical function and formation. At the same time, it is ev...
journal_title:Journal of environmental biology
pub_type: 杂志文章
doi:
更新日期:2012-04-01 00:00:00