The present study was performed to detect the molecular and the phylogenetic identification of species that belonging to the genus of Moniezia Blanchard, 1891 which affected intestines of sheep in Al-Diwaniyah city, Iraq; fifty intestine samples were sought for the infestation of Moniezia spp. from the city slaughterhouse from 1 October to 30 November 2017, this tapeworm was found to infest the intestines of 13 sheep. For morphological identify the genus of this tapeworm, eggs from one gravid proglottid of the thirteen worms were examined, polymerase chain reaction (PCR) and the PCR-productbased sequencing were applied on 4 Moniezia tapeworms targeting a specific region of the 18S rRNA gene. The sequencing has shown 2 species of Moniezia, SP1 and SP2 ,these two species revealed close matching on the phylogenetic tree to an according to the current study findings, Moniezia spp. affect on sheep in the city of Al-Diwaniyah, Iraq, these findings give interesting information about the evolution history of this worm in the studied city.
According to global-wide presence of insecticides resistance to pyrethroids, the current study identified the purpose to detect the allelic genotypes regarding this issue in house flies in Iraq. From the governorate of Al-Qadisiyah, Iraq, 60 morphologically and molecularly recognized house flies were caught from 6 different regions. Using a technique called polymerase chain reaction (PCR) amplification of specific allele (PASA), PCR was employed to reveal the presence of allelegenetic variations in the para-type sodium channel (para) gene to recognize knockdown resistance (kdr) mutation from the homozygous-wild type of complete susceptibility (sus/sus) to the mutated-homozygous type of complete resistance (kdr/kdr) or to the mutated-heterozygous type (kdr/sus). Here, these genotypes were targeted using specific primers to identify these genetic variations. The results have declared the presence of the sus/sus at 100%-frequency rate in all flies, and none of the other genotypes were detected (0%) in all flies. This valued piece of result indicates the reality of resistance persistence due to lack of insecticide-spraying programs in the governorate. This study provides high-quality information about the current status of insecticide resistance in house flies in Iraq about supporting the fact of genetic-base development of such resistance via frequent use of insecticides.
The current work on mosquito larvae was performed to evaluate the resistance status of larvae to deltamethrin (DM) and to detect if the larvicidal activity (LA) of this chemical could be synergized after exposing the larvae to cinnamaldehyde (CD). Here, 200 Aedes albopictus larvae were employed for the experiment and were divided randomly into 2 groups (100/each group and placed in petri-dishes (PD), 10 larvae/PD), and they are the DM group (1ml of 0.04 mg/l in 99ml of distilled water (DW) was placed to each PD) and the DM+CD group (1ml of 0.04 mg/l and 1ml of 0.9mg/l respectively were placed with 98ml DW in each PD). The experiment was lasted for 24hrs. Larvae were detected to have resistance against DM as 45% to 60% of the larvae were killed by the DM, 40% to 55% resistance rate. However, when evaluating DM activity with the use of CD, the LA was synergized showing mortality in 87% to 92% of the larvae in which a significant increase in the mortality in DM+CD group was noticed more than that in the DM group. Furthermore, RT-qPCR was run to identify the expression status of the P540 monooxygenase gene, Cyp6p15, and found that the gene expression was significantly inhibited in the DM+CD group when comparing that in the DM group that showed overexpression of this gene. This work results provide viable information about the potential activity of the cinnamaldehyde in synergizing the larvicidal activity of deltamethrin.
Pigeons, in Al-Qadisiyah Province-Iraq, were investigated Clinically, parasitically, and histopathologically for the presence of Raillietina spp in their intestines. For these reasons, 5 cities from the mentioned province above were sampled as 150 (100 males and 50 females) pigeons were studied. The general clinical inspection, intestinal exploration and slides for the worms, and histopathological slide sections for the infested intestines were performed. The results of the clinical studies revealed delay growth in the young birds and emaciation in the adult pigeons. For the parasitic characteristics in the intestines, the results showed clearly the presence of Raillietina spp, declaring by their firmly attachment to the mucosa by their suckers and showing their segments, in the lumens of the small intestines. In the case of histopathological pictures, intestines revealed grossly small-intestine-wall-based enlargement and obstruction via intussception caused by the tapeworm presence with huge amounts of mucus and air bubbles and the parasitic white convoluted tracks in the intestinal mucosa. Microscopically, the results recognized that mucosa had mechanical disintegration, marked sloughing of the epithelial layers that belonged to the villi and crypts, epithelial-cell-based desquamation of the villi that were affected by dwarfism, mucosa and submucosa infiltration with mononuclear cells. This study provides important clinical, parasitic, and histopathological data of pigeons infested with Raillietina spp in AlQadisiyah Province, Iraq.
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