Besides cytological and molecular applications, Paramecium is being used in water quality assessment and for determination of saprobic
levels. An unambiguous identification of these unicellular eukaryotes is not only essential, but its ecological diversity must also be explored in
the local environment. 18SrRNA genes of all the strains of Paramecium species isolated from waste water were amplified, cloned and
sequenced. Phylogenetic comparison of the nucleotide sequences of these strains with 23 closely related Paramecium species from GenBank

Background: The common carp is an important aquaculture species that is widely distributed across the world. During the
long history of carp domestication, numerous carp strains with diverse skin colors have been established. Skin color is used
as a visual criterion to determine the market value of carp. However, the genetic basis of common carp skin color has not
been extensively studied.
Methodology/Principal Findings: In this study, we performed Illumina sequencing on two common carp strains: the

Yellowfin goby (Acanthogobius flavimanus) belongs to the Perciformes Gobiidae. In this study,
we sequenced the complete mitochondrial genome of A. flavimanus. The complete
mitochondrial genome was determined to be 16,663 bp in length including 13 proteincoding
genes, 22 transfer RNAs (tRNAs), 2 ribosomal RNAs (rRNAs) and 1 control region. The
complete mitochondrial genome of A. gueldenstaedti provides basic genome data for relative
studies on Acipenseriformes.

Pesticides are widely used in modern agriculture to aid in the production of high quality food. However, some pesticides
have the potential to cause serious health and/or environmental damage. Organophosphates (OCP’S) and carbamates can
cause pollution in freshwater ecosystem, as well as having a significant effect on the health of fish. The acute effects of
commercial formulation of triazophos, profenofos, carbofuran and carbaryl were determined in one of the indigenous

This study evaluates the sanitary conditions of ten selected roof water tanks in Alkharj Governorate,
KSA and examines their water quality. A survey was conducted using a questionnaire to collect information about the
sanitation of these tanks. The physical, chemical and biological parameters of 60 water samples were examined using
standard methods. The survey results revealed that 40% of tanks received unsatisfactory grades. The physical and
chemical analyses indicated that the turbidity and levels of residual chlorine were above the maximum permissible

Chromosomes can be structurally identified by their sizes, positions of centromeres
and nucleolar organizers, and patterns of chromomeres, heterochromatin,
and bands. There are four types of aberrations in the chromosomal structure such
as deletions, duplications, inversions, and translocations which can be detected
cytologically under the microscope. Some changes are however too subtle to be
detected cytologically. Deletions represent missing segments of chromosomes.
The homozygous deletions can be lethal, whereas heterozygous deletions can be