Publications by authors named "Pombi M"

Article Synopsis
  • The study focuses on five species of Phortica flies in Europe and the Middle East, particularly Phortica variegata and Phortica okadai, known as vectors for the zoonotic eyeworm Thelazia callipaeda, in a region near Rome, Italy.
  • Over three years (2018-2020), researchers collected and identified nearly 5,600 flies, revealing a dominance of Phortica variegata, which was found to be infected with T. callipaeda, while Phortica oldenbergi showed differing behavior in fruit traps.
  • Environmental factors like temperature, wind speed, and pressure influenced the population dynamics of these species, with the study being the first to explore these ecological interactions
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Background: Within the framework of sustainable and effective control methods for Aedes albopictus, two different conidial suspensions, BbCS-1 and BbCS-2 (respectively without and with nutrients), were used as solvents for the biopolymers water-soluble 2-hydroxyethylcellulose (HEC) and sodium alginate (SA). In this way, two different classes of hydrogels were prepared for each polymer (previously shown to attract tiger mosquito oviposition) to produce HEC-based and SA-based Bb/Gel systems with and without nutrients. The aim was to achieve a long-lasting and cost-effective lure-and-kill oviposition substrate useful for lethal ovitraps.

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Background: Pyrethroid resistance is one of the major threats for effectiveness of insecticide-treated bed nets (ITNs) in malaria vector control. Genotyping of mutations in the voltage gated sodium channel (VGSC) gene is widely used to easily assess the evolution and spread of pyrethroid target-site resistance among malaria vectors. L1014F and L1014S substitutions are the most common and best characterized VGSC mutations in major African malaria vector species of the Anopheles gambiae complex.

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Background: Chromosomal inversion polymorphisms have been associated with adaptive behavioral, physiological, morphological and life history traits in the two main Afrotropical malaria vectors, Anopheles coluzzii and Anopheles gambiae. The understanding of the adaptive value of chromosomal inversion systems is constrained by the feasibility of cytological karyotyping. In recent years in silico and molecular approaches have been developed for the genotyping of most widespread inversions (2La, 2Rb and 2Rc).

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Early detection of pathogens in vectors is important in preventing the spread of arboviral diseases, providing a timely indicator of pathogen circulation before outbreaks occur. However, entomological surveillance may face logistical constraints, such as maintaining the cold chain, and resource limitations, such as the field and laboratory workload of mosquito processing. We propose an FTA card-based trapping system that aims to simplify both field and laboratory phases of arbovirus surveillance.

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Article Synopsis
  • The interaction between mosquito behavior and human habits is crucial for understanding and improving the effectiveness of insecticide-treated nets (ITNs) in malaria prevention.
  • The study in Goden village, Burkina Faso, combined human sleeping patterns and mosquito biting rhythms to assess malaria transmission risks, revealing high mosquito activity during nighttime hours.
  • Results indicated that key species like Anopheles coluzzii dominate transmission, with overall infection rates low; however, a significant portion of the population lacked access to bednets, diminishing protective efficacy against malaria.
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Furuncular myiasis is a parasitosis of the skin that is commonly reported in the tropical areas and is caused by various agents including Dermatobia hominis. Knowledge of myiasis is limited in Italy, resulting in difficulties in its diagnosis and treatment. We report a case of imported furuncular myiasis in a 48 year old Italian patient who returned from Peru.

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Insects, ticks, and mites represent a threat to animal health globally, mainly due to their role as vectors of pathogens. Among the most important diseases, those transmitted by mosquitoes (e.g.

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Pest management is looking for green and cost-effective innovative solutions to control tiger mosquitoes and other pests. By using biomimetic principles and biocompatible/biodegradable biopolymers, it could be possible to develop a new approach based on substrates that selectively attract insects by reproducing specific natural environmental conditions and then kill them by hosting and delivering a natural biopesticide or through mechanical action (biomimetic lure and kill approach, BL&K). Such an approach can be theoretically specialized against tiger mosquitoes (BL&K-TM) by designing hydrogels to imitate the natural oviposition site's conditions to employ them inside a lure and kill ovitraps as a biomimetic oviposition substrate.

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Thelazia callipaeda is a zoonotic nematode parasitizing the eyes of many hosts species, primarily dogs. To date Phortica variegata and Phortica okadai are the only known vectors of this nematode in Europe and China, respectively. In this study we investigated the role played by a third species, Phortica oldenbergi, as vector of T.

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Background: Some species of drosophilid flies belonging to the genus Phortica feed on ocular secretions of mammals, acting as biological vectors of the zoonotic eyeworm Thelazia callipaeda. This study describes an effective breeding protocol of Phortica variegata and Phortica oldenbergi in insectary conditions.

Methods: Alive gravid flies of P.

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Background: Different trapping devices and attractants are used in the mosquito surveillance programs currently running in Europe. Most of these devices target vector species belonging to the genera Culex or Aedes, and no studies have yet evaluated the effectiveness of different trapping devices for the specific targeting of Anopheles mosquito species, which are potential vectors of malaria in Europe. This study aims to fill this gap in knowledge by comparing the performance of trapping methods that are commonly used in European mosquito surveillance programs for Culex and Aedes for the specific collection of adults of species of the Anopheles maculipennis complex.

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Despite the eradication of malaria across most European countries in the 1960s and 1970s, the anopheline vectors are still present. Most of the malaria cases that have been reported in Europe up to the present time have been infections acquired in endemic areas by travelers. However, the possibility of acquiring malaria by locally infected mosquitoes has been poorly investigated in Europe, despite autochthonous malaria cases having been occasionally reported in several European countries.

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Background: Pest management has been facing the spread of invasive species, insecticide resistance phenomena, and concern for the impact of chemical pesticides on human health and the environment. It has tried to deal with them by developing technically efficient and economically sustainable solutions to complement/replace/improve traditional control methods. The renewal has been mainly directed towards less toxic pesticides or enhancing the precision of their delivery to reduce the volume employed and side effects through lure-and-kill approaches based on semiochemicals attractants.

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Visceral leishmaniasis (VL) caused by Leishmania infantum is endemic in the Mediterranean basin with most of the infected human patients remaining asymptomatic. Recently, the saurian-associated Leishmania tarentolae was detected in human blood donors and in sheltered dogs. The circulation of L.

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Article Synopsis
  • Leishmania tarentolae is a non-pathogenic protozoan found in geckoes and can coexist with the pathogenic Leishmania infantum, particularly in regions where canine leishmaniasis is common, such as southern Italy.
  • The study involved testing sheltered dogs, lizards, and sand flies for both species using various methods, including antibody tests and molecular PCR techniques, to understand their circulation and potential interactions.
  • Results showed that both dogs and lizards were infected with L. tarentolae for the first time, with several sand flies also testing positive for either L. tarentolae or L. infantum, highlighting the potential transmission pathways between these hosts.
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The magnitude and functional patterns of intraspecific transcriptional variation in the anophelines, including those of sex-biased genes underlying sex-specific traits relevant for malaria transmission, remain understudied. As a result, how changes in expression levels drive adaptation in these species is poorly understood. We sequenced the female, male, and larval transcriptomes of three populations of Anopheles arabiensis from Burkina Faso.

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Article Synopsis
  • Genotyping chromosomal inversions in malaria vectors like An. coluzzii is crucial for accurate population analysis and understanding their adaptation to environmental changes.
  • A new, efficient molecular method using tag SNPs has been created to overcome the limitations of traditional cytogenetic techniques, allowing for rapid and cost-effective field applications.
  • In testing, two of the four developed assays showed over 90% accuracy when compared to traditional karyotyping, with a combined use promising greater than 99% accuracy in genotyping assignments.
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The correct identification of mosquito vectors is often hampered by the presence of morphologically indiscernible sibling species. The Maculipennis complex is one of these groups that include both malaria vectors of primary importance and species of low/negligible epidemiological relevance, of which distribution data in Italy are outdated. Our study was aimed at providing an updated distribution of Maculipennis complex in Northern Italy through the sampling and morphological/molecular identification of specimens from five regions.

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Mosquitoes of the genus transmit arboviruses of great importance to human health as dengue, chikungunya, Zika and yellow fever. The tiger mosquito can play an important role as arboviral vector, especially when is absent or present at low levels. Remarkably, the rapid worldwide spreading of the tiger mosquito is expanding the risk of arboviral transmission also to temperate areas, and the autochthonous cases of chikungunya, dengue and Zika in Europe emphasize the need for improved monitoring and control.

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The detection of atypical Kinetoplastida in vertebrate hosts and vectors might suggest unexpected host-parasite contacts. Aside to major vectors of Leishmania (Leishmania) infantum in Italy (e.g.

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Chromosomal inversion polymorphisms have special importance in the complex of malaria vector mosquitoes, due to their role in local adaptation and range expansion. The study of inversions in natural populations is reliant on polytene chromosome analysis by expert cytogeneticists, a process that is limited by the rarity of trained specialists, low throughput, and restrictive sampling requirements. To overcome this barrier, we ascertained tag single nucleotide polymorphisms (SNPs) that are highly correlated with inversion status (inverted or standard orientation).

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Article Synopsis
  • Researchers studied how effective treated nets are against malaria in a village in Burkina Faso, which still has a lot of malaria cases despite these nets.
  • They collected mosquitoes at different times and places to see how many were biting people and if the mosquitoes were resistant to the insecticide.
  • The study found that mosquitoes were biting both indoors and outdoors, not just at night as expected, and many of the mosquitoes showed resistance to the insecticide, which might be why the nets weren't working as well as hoped.
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