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In this study mitochondrial 16S ribosomal DNA sequences were
isolated by PCR, sequenced and used to infer a molecular
phylogeny.Termites were sampled from different localities of
Pakistan and analysed morphologically.DNA was extracted from
individual whole alcohol preserved worker termites. That were
freeze dried, using DNeasy tissue kit. The DNA extraction protocols
were defined.Then DNA Sequencing was done, DNA sequence alignments
also done using Clustral method with weighted residue weight table
in DNA star software.This study would provide baseline data on
genotypic variability for different termite populations from
different localities.Microsatellite genotyping utilizating high
resolution non denaturing poly acrylamide gel electrophorsis was a
qualitative method of evaluating allelic and genotyping diversity
to determine colony distinction in termites also. So following the
criteria described above, we would provide a DNA based
identification system of termites in Pakistan.
Synthetic insecticides have been the major control method of insect
pests since 1950s. The widespread and unwise use of insecticides
has resulted in the development of insect strains that are
resistant to insecticides. The level of insecticide resistance was
evaluated in two economically important stored grain pests,
Tribolium castaneum (Herbst) and Rhyzopertha dominica (Fabricius)
in the present study. Resistance level was checked against one
organophosphate and four pyrethroid insecticides by using filter
paper method and residual film method. Mortality was recorded after
48 hours of treatment. Resistant insects were identified on the
basis of their LC50 values. T. castaneum (H.) appeared to be more
resistant as compared to R. dominica (F.). Results indicated that
deltamethrin 2.5% SC was more toxic of all test insecticides while
DDVP 50% EC was least toxic.
Insecticides play an important role in the control of mosquitoes.
Unfortunately resistance has been developed by many mosquito
species. In the present study, biotoxicity of four insecticides
from four major groups: neo-nicotenoids (imidacloprid 5% SC)
phenyl-pyrazoles (fipronil 2.5% EC), pyrethroids (deltamethrin 2.5%
SC) and organophosphates (DDVP 50% EC) were tested against Ae.
aegypti and Cx. quinquefasciatus. Samples were collected from
different localities to determine the susceptibility of both
species against tested insecticides. Larval toxicity results were
different for (KotLakhpat) KLP and (Lahore College for Women
University Lahore) LCW for each insecticide. KLP sample was
considered as reference samples because it was exposed to
insecticides at a very low extent as compared to LCW samples.
Regression analysis of variance showed significant positive trend
in mortality of both species. Fipronil and imidacloprid were proved
to be most toxic against Cx. quinquefasciatus and Ae. aegypti in
KLP samples. Deltamethrin showed least efficacy against both
localities representing its high tolerance and resistance against
pyrethroids.
Present study deals with comparison of three essential oils (neem,
vetiver and mint) against the most common termite species of
Pakistan, Heterotermes indicola (Wasmann). Oils were tested for
repellency, toxicity and fumigation against H. indicola. Results
revealed that vetiver oil was most toxic killing 60% termites at 25
g/ l while neem and mint oils showed 54% and 56.66% mortality rate,
respectively, at the same concentration. When tested for
repellency, vetiver oil proved to be the most effective repellent
because of its long lasting activity. In a fumigation test, all
three oils were tested at concentration of 0.03125%, 0.0625%,
0.125%, 0.25% and 0.5%. Out of the three tested oils, vetiver oil
was the most effective. The components of neem, vetiver and mint
oil were identified by TLC technique. At the end of the study, it
was concluded that vetiver oil is a promising novel termiticide
against H. indicola.
Dan is living in a mouse community. After being raided by the
humans the mice establish their own town near a stream. Something
happens to the woman Dan loves and wants to marry. With a wounded
heart, he decides to leave the town. After the most adventurous
journey of his life, he ends up in an amazing world. Dan tells his
story to a young mouse who is eager to go the world of amusement.
The story is full of lessons, values, and morals. Dan closely
observes the behavior, the miseries, and the troubles of the
powerful and intelligent creation of God. He recalls a speaker in
his community had said, "The world is changing. Man, who once had
dignity, is now losing honor because of his corrupted behavior. If
he does not make reforms, he himself will be the cause of his own
elimination from the surface of the earth. Man is planning to go to
Mars in order to find the existence of life, meanwhile he has made
his own plant miserable for all that exist on it." A tiny creature
- and insignificant being brings back wisdom and knowledge that
heals the wounds, refreshes the souls, and quenches the thirst.
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