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Diversity and Genetic Structuration of Populations of <i>Plutella xylostella</i>(Lepidoptera, Plutellidae), Cabbage Farming Destroyer in Senegal

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Advances in Entomology 2022年第1期10卷 1-13页

作者： Toffène Diome Mamecor Faye Marième Seck cheikh tidiane niass Mbacké Sembène Genetic Team and Population Management Department of Animal Biology Faculty of Sciences and Technology Cheikh Anta Diop University Dakar Senegal Laboratory of Parasitology Department of Animal Biology Faculty of Sciences and Technology Cheikh Anta Diop University Dakar Senegal

Plutella xylostella, pointed out as the most dangerous destroyer of cabbage (Brassica olerarea), is a cosmopolitan species. In fact, owing to its large capacity of adaptation, P. xylestella colonizes any kind of area. This insect can bring about up to 90% of losses on cabbage farming. To control the insect, Senegalese farmers, very often, resort to high dose of chemical pesticides which are repetitively sprayed. The use of these chemical products gives rise to different varieties of resistant insects, which results in the emergence of different haplotypes between populations. It is in such a context that this study has been undertaken. Our objective is then to contribute to the knowledge of the genetic diversity of P. xylostella populations in Senegal. To hit the target, PCR- Sequencing method has been applied on samples from the five following localities: Diofior, Malika, Mboro, Santh Ndong, and Sebikotane. P. xylostella from Mboro is genetically different from the other populations. This fact could be due to a different way of using pesticides in this area vis-à-vis of the other localities. On the other hand, between populations of P. xylostella from Diofior, Malika, Santh Ndong, and Sebikotane, there is no significant genetic difference. In other respects, phylogenetic trees reveal the existence of two clades: one with individuals from Mboro and the other one with individuals from the other four localities. P. xylostella from Mboro distinguishes itself from other populations and then, can be regarded as a sub-population. Thus, the phylogenetic trees reveal the existence of two groups of P. xylostella in Senegal.

关键词： Brassica oleracea Genetic Diversity Genetic Structure

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Reasons for Elective Surgery Cancellations in a Senegalese Pediatric Surgery Department

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Open Journal of Pediatrics 2024年第5期14卷 783-789页

作者： cheikh tidiane Mbaye cheikh Diouf Florent Tshibwid A Zeng Faty Balla Lô Lissoune Cissé Doudou Gueye Ibrahima Bocar Wellé Souleymane Camara Papa Alassane Mbaye Oumar Ndour Gabriel Ngom Department of Pediatric Surgery Aristide Le Dantec University Teaching Hospital Universit Cheikh Anta Diop Dakar Senegal Department of Pediatric Surgery Ziguinchor Regional Hospital Center Universit Cheikh Anta Diop Ziguinchor Senegal Department of Pediatric Surgery El Hadj Ibrahima Niass Regional Hospital Center Kaolack Senegal Department of Pediatric Surgery Pikine National Hospital Center Dakar Senegal Department of Pediatric Surgery Albert Royer National Childrens Hospital Center Universit Cheikh Anta Diop Dakar Senegal Unit of Pediatric Surgery Department of Pediatrics Dalal Jamm National Hospital Center Dakar Senegal

Introduction: Cancellation of elective surgery is common in developing countries. This decision is difficult to make as it generates economic and organizational consequences for the healthcare facility and an additional source of stress for patients and their caregivers. This study aimed to analyze the various aspects of this medical problem. Patients and Methods: We conducted a prospective and descriptive study over six months (from January 1st, 2017, to June 30th, 2017) at the pediatric surgery department of Aristide Le Dantec University Teaching Hospital in Senegal. Results: Ninety-one cases were collected. The cancellation rate was 20.8%. Infants were affected in 36.3% of cases. Among anesthesiologists, 83.5% were residents, and 16.5% were specialists. Cancellation in nephroblastoma children with an indication for extended nephrectomy represented 15.4% of cases. Concerning reasons for cancellation, comorbidities, dominated by respiratory infections, accounted for 28.5% of cases, patient absences for 24.2%, and issues related to the anesthesiologist for 17.6%. Cancellations were avoidable in 33% of cases. Patients were responsible for cancellation in 37.4% of cases, the healthcare system in 33%, and medical reasons in 29.7%. Conclusion: Our findings suggest that one-third of cancellations could have been avoided with improvements in the healthcare system. Actions should be taken to reduce the cancellation rate in our context.

关键词： Cancellation Elective Surgery Pediatric Surgery LMICs Senegal

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