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EN
The Indian meal moth, Plodia interpunctella (Lepidoptera: Pyralidae) is one of the most important stored product pests. Fumigation plays a significant role in the management of insect pests in stored-products. However, the use of fumigants is problematic because of their effects on the environment and high costs. Entomopathogenic organisms are environmentally friendly control agents and suppress pest populations under natural conditions. In this study, distribution and occurrence of a microsporidian pathogen, Vairimorpha plodiae (Opisthokonta: Microspora) in the populations of P. interpunctella from 12 localities representing Turkey between 2019 and 2020 are presented for the first time by confirming its effectiveness on natural populations. The presence of the microsporidian pathogen was found in 11 of 12 (91.7%) populations. In total, 863 of 3,044 samples were infected by the pathogen. Infection mean was 28.4% for all populations. Our results showed that V. plodiae infection reached to a considerably high prevalence (88.77%) in P. interpunctella populations and varied from 5.1 to 88.7% between the populations. In addition, microsporidia infections have been identified throughout Turkey. We found that V. plodiae can infect all life stages of P. interpunctella. Totally, 623 (28.5%) of 2187 larvae, 14 (37.8%) of 37 pupae, 226 (27%) of 820 adults were found to be infected by the pathogen. There were considerable differences between the dead and living larvae. The microsporidian infection was found in 26 (11.6%) of 225 living larvae, whereas it was found in 595 (30.5%) of 1,952 dead larvae. These results confirm that the microsporidia pathogen has a high spreading potential in P. interpunctella populations and can be a natural biological suppression factor on pest populations.
EN
Malaria is a major public health problem in most tropical and subtropical regions, including in our country, Ethiopia. A report published in 2010 stated that more than 1.2 million global malaria deaths due to malaria occurred in the one year alone. This figure includes both children and adults. Malaria disease is transferred from an infected person to an uninfected one by the bite of the female Anopheles mosquito. Herein, Plasmodium falciparum, P. vivax, P. malariae, P. ovale and P. knowlesi are the most important malaria causing parasites. Malaria disease does not have any effective treatment in the form of vaccines or drugs, so vector control is the only possible ways of prevention. Mosquito control using pesticides is presently the most widely used method for disease control. However, insecticide resistance has enabled pest resurgence, and the insecticides themselves have negative effects on human health, the environment and non-target organisms. In order to avoid these problems, biological control methods are proposed to control mosquito vectors. Biological control is an ecologically safe and effective means of minimizing pests and pest damage by means of using natural enemies. This review article offers an over view of the most favorable biological control methods for malaria extermination, such as larvivorous fish, entomopathogenic fungi, bacteria, viruses, nematodes and toxorhynchites larva. Here, we will discuss the current literature regarding biological control agents against the mosquito vector, and in doing so, will bring to light the importance of biological control in countering malaria. Finally, we will discuss the advantages and disadvantages of biological control methods, as compared with other methods commonly used to control malaria.
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