Abstract：
:True identity and existence of genetic variability in mealy bug from different regions holds immense significance for adopting appropriate control measures along with predicting the development of any biotypes. Mealy bug, Phenacoccus solenopsis adults were collected from four host plants i.e., Gossypium hirsutum--cotton (C), Abelmoschus esculentus--okra (O), Pennisetum glaucum--Napier Bajra (B) and a weed--Parthenium hysterophorus (P) in five cotton growing districts i.e., Abohar, Bathinda, Mansa, Muktsar and Faridkot of Punjab state. Variability among different populations was investigated through comparative analysis of four different RAPD markers. The genetic similarity dendrogram established that irrespective of the host plant and the collection site, 20 mealybug populations were distinguishable into two major clades that were related to each other by 68%. Clade 1 included populations from Abohar district; it also included a single population each from Muktsar and Bathinda districts. The populations from all the other districts were grouped under Clade 2 with genetic similarity of 78% Even under Clade 2, individual populations appeared to exist in location specific sub-clades. Thus, there is great possibility of development of biotypes which may differ in resistance to insecticides and host plant specificity.
journal_name
J Environ Bioljournal_title
Journal of environmental biologyauthors
Singh S,Sharma R,Kumar R,Gupta VK,Dilawari VKsubject
Has Abstractpub_date
2012-05-01 00:00:00pages
539-43issue
3eissn
0254-8704issn
2394-0379journal_volume
33pub_type
杂志文章abstract：:Petrochemical industry have severe problem in disposing effluent and semisolid sludge despite repeated recycling. It requires further treatment prior to disposal of sludge. In recent years biological treatment methods received much attention and considered as an efficient low-cost treatment. One such method is vermicu...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Adverse effects of diesel oil on microanatomical structure of the alimentary canal of O. nilotica were studied using SEM observations. The study revealed irregular arrangement of the stratified epithelial cells along with fragmentation of the normal concentric pattem of microridges of the same cells in buccopharynx an...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:In the present study, water samples from 3 stations of Kor river, Iran were analyzed for seasonal fluctuation of physico-chemical parameters, i.e. air and water temperature, dissolved oxygen, BOD, COD, total nitrogen, total hardness, pH, alkalinity, acidity, total dissolved solid and water current. Effect of physico-c...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-09-01 00:00:00
abstract：:Pesticides, spinosad, imidacloprid and neem oil are widely used both in residential and agricultural environments because of its broad spectrum insecticidal activity and effectiveness. The present study was undertaken to estimate genotoxicity of formulations of some pesticides in mice. Three pesticides of diverse grou...
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 fungi Botryodiplodia theobromae and Rhizopus oryzae produce extracellular amylase when grown on a liquid medium containing 2% (WN) soluble starch or cassava starch residue(CSR) (as starch equivalent), a waste generated after extraction of starch from cassava, as the sole carbon source. Using CSR as the sole carbon...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2004-10-01 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 laboratory investigation was undertaken to study the cyclic usage of field recommended doses of Bacillus thuringiensis israelensis (Bti), Bacillus sphaericus (Bsp) and combination of Bti and Bsp (half the recommended dose of each) with deltamethrin 2.8 EC to attain better control of mosquito larvae. To understand th...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2004-10-01 00:00:00
abstract：:Soil enzymatic activities are commonly used as biomarkers of soil quality. Several organic and inorganic compounds found in municipal wastewater sludges can possibly be used as fertilizers. Monitoring and evaluating the quality of sludge amended soils with enzyme activities accepted as a beneficial practice with respe...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2015-07-01 00:00:00
abstract：:Agricultural practices such as harvesting of crops cause the pathogens to disseminate in abundance and may cause diseases, like skin and respiratory allergies in an epidemic form. Also the farm workers were likely to be exposed repeatedly to high doses of fungal spore allergens from crop harvesting operations. At Srik...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:Periodical changes in physico-chemical properties and cyanophycean bloom in a pond ofAgra city during the year 2005 and 2006 were studied. It was recorded that the pond water was polluted throughout the study period and this was closely associated with Cyanobacterial bloom. During summer (March to June), the pond wate...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-11-01 00:00:00
abstract：:A field experiment was conducted for two years to find out best water management practice to mitigate methane emission from the rice-fields. Continuously flooded conditions yielded two major flushes of methane emission and on an average resulted in relatively higher rate of methane emission (2.20 and 1.30 mg m(-2) hr(...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2011-03-01 00:00:00
abstract：:Brainstem auditory evoked responses (BAER) were studied in a total of 194 boys in the age group between 10-15 yrs taken from a busy metropolitan city and also from a relatively quiet town in order to compare their values and to look into the probable cause of the difference between them, if any. BAER were tested with ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2003-07-01 00:00:00
abstract：:Pulp paper mill pollutants are the major source of aquatic contamination having metals, lignin and chlorophenols. Study was conducted to see the effect of these contaminants on antibiotic resistance pattern of isolated bacteria. Pulp paper effluents were evaluated for its physico-chemical properties i.e, BOD 72143 +/-...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2011-11-01 00:00:00
abstract：:Most of the statistical techniques used to evaluate the data obtained from toxicity studies are based on the assumption that the data show a normal distribution and homogeneity of variance. Literature review on toxicity studies on laboratory animals reveals that in most of the cases homogeneity of variance alone is ex...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:In this study soil properties and root biomass responses to prescribed fire were investigated in 25-30 year-old calabrian pine (Pinus brutia Ten.) stands in Edirne, Turkey. The stands were established by planting and were subjected to prescribed burning in July 2005. Soil respiration rates were determined every two mo...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:Water in rice fields of mountain valley of Ziro, Arunachal Pradesh was investigated for physico-chemical characterization during rice fish farming season (Kharif) of 2013. Water temperature, dissolved oxygen, biological oxygen demand, free carbon dioxide, nitrate-nitrogen, phosphate-phosphorus, chloride, total hardnes...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2015-09-01 00:00:00
abstract：:Assays with Chlorella vulgaris Beijerinck Novakova, 1890 and Daphnia magna Straus, 1820 were performed to determine Cr and other elements concentration in tissues of both species by instrumental neutron activation analysis (INAA), after being exposed to 150, 280 and 350 microg l(-1) Cr(VI). Interaction among Cu, Zn, F...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2009-03-01 00:00:00
abstract：:The effect of salinity on the survival and growth of Callinectes amnicola (De Rocheburne) from the Lagos Lagoon, Nigeria was monitored in the laboratory for 22 weeks. The crabs were euryhaline and tolerated a salinity range of 5 to 25 per thousand and had 90% survival at 15 and 20 per thousand. The highest gain in wei...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2010-07-01 00:00:00
abstract：:Reproductive biology of an Indian Silurid catfish, Ompok pabda were determined in a moderately impacted tropical River Gomti in India. Samples offish were collected monthly between May 2008 to April 2009 in two zones; upstream site at Mishrikh, Sitapur and midstream site at Lucknow. Length at first maturity calculated...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2014-03-01 00:00:00
abstract：:The present investigation deals with fluoride removal from aqueous solution by thermally activated neem (Azadirachta indica) leaves carbon (ANC) and thermally activated kikar (Acacia arabica) leaves carbon (AKC) adsorbents. In this study neem leaves carbon and kikar leaves carbon prepared by heating the leaves at 400 ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-03-01 00:00:00
abstract：:In this study rhamnolipid biosurfactant production was investigated in eighteen strains of Pseudomonas spp.. Rhamnolipid by these strains was determined by a spectrophotometric method in nutrient broth medium (NB). From the 18 strains screened, two Pseudomonas strains (Pseudomonas luteola B17 and Pseudomonas putida B1...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：:The present study was carried out to determine the water quality in terms of physicochemical characteristics and plankton distribution in the coastal waters of Kattumavadi, Palk Bay for a period of one year from April 2002 to March 2003. Air and surface water temperatures varied from 28 degrees C to 32.50 degrees C an...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2006-07-01 00:00:00
abstract：:In October 2007, a light crude oil spill took place in the off shore Kab121 oil well, 32 km north of the mouth of the Grijalva River, Tabasco, Mexico. In order to estimate the possible effects of oil spill on the biota in the area surrounding the spilled well, the level of different fractions of petroleum hydrocarbons...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2014-01-01 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：:Excess of cadmium (Cd) induced changes in oxidative scenario and water status of plants viz.., total water content, specific water content, water saturation deficit (WSD) and transpiration of Brassica juncea plants grown in soil pot culture. Although lower and marginal levels of excess cadmium (100 and 250 ppm) improv...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:This study represents the summary of the water quality of River Ganga during mass bathing in Haridwar during Maha Kumbha of 2010 in terms of microbiological and molecular analysis. The sample was collected from River Ganga during Makar Sankranti to Shakh Poornima and assessed for fecal indicator bacteria Escherichia c...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2013-07-01 00:00:00
abstract：:Indian bullfrog Haplobatrachus tigerinus (Daudin) was exposed to sublethal dose (1/3 of LC50 I.E. 1.166 mg/kg) of fenvalerate technical grade and the effect was studied on the specific activity of acetyl cholinesterase in the different tissues of frog viz., brain, muscle, liver, kidney and testis at different time per...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2003-10-01 00:00:00
abstract：:A double parasitism (isopod and copepod) on anchovy fish, Stolephorus commersonii Lacepede, 1803 was recorded from Parangipettai (India) coastal waters during June, 2004. This is the first report from this region and the infestation is discussed in relation to environmental parameters in this short communication. ...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2006-07-01 00:00:00
abstract：:A bacterium capable of biodegrading surfactant sodium dodecyl sulphate (SDS) was isolated from Antarctic soil. The isolate was tentatively identified as Pseudomonas sp. strain DRY15 based on carbon utilization profiles using Biolog GN plates and partial 16S rDNA molecular phylogeny. Growth characteristic studies showe...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2013-11-01 00:00:00
abstract：:This study was carried out in a clonal seed orchard of scots pine (Pinus sylvestris L.), to determine the difference and interaction for reproductive and growth characters among clones and its impact on fertility variation and gene diversity Numbers of female and male strobili, and height and diameter at breast height...
journal_title：Journal of environmental biology
pub_type： 杂志文章
doi：
更新日期：2008-05-01 00:00:00
