Oestrid myiasis at a cross-road

Colwell, D. D.; Otranto, Domenico

doi:10.1016/j.actatropica.2021.106131

Cited by 4 publications

(5 citation statements)

References 73 publications

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“…In fact, several studies strongly suggest that O. ovis larvae manipulate the host immune response (Colwell & Otranto, 2021). Regarding the anterior Malpighian tubules, an enlarged portion could be an adaptation to calcium-rich diets in dipterans, enabling the storage of calcium concretions (see Martín-Vega et al, 2021, and references therein).…”

Section: Discussionmentioning

confidence: 99%

“…It has been suggested that the greater development of the salivary glands in Oestrinae larvae may play a role in parasite nutrition as a higher production of immunogenic antigens produces an inflammatory response in the host mucosa (Angulo‐Valadez et al, 2007; Martín‐Vega et al, 2021). In fact, several studies strongly suggest that O. ovis larvae manipulate the host immune response (Colwell & Otranto, 2021). Regarding the anterior Malpighian tubules, an enlarged portion could be an adaptation to calcium‐rich diets in dipterans, enabling the storage of calcium concretions (see Martín‐Vega et al, 2021, and references therein).…”

Section: Discussionmentioning

confidence: 99%

“…Among the Oestridae, the species within the subfamily Oestrinae typically produce nasopharyngeal myiasis and severely affect the welfare of the parasitized animals (Colwell, 2006a). Whereas the Oestrinae species that parasitize domestic mammals have been the target of several studies due to their major economic impact, those species that specifically infest wild mammals remain poorly known (Colwell & Otranto, 2021). A good example is the pharyngeal bot fly, Pharyngomyia picta (Meigen, 1824), a species that parasitizes red deer ( Cervus elaphus Linnaeus, 1758) and other wild cervids across Europe and Asia (Colwell, Hall, & Scholl, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Larval anatomy of the digestive and excretory systems of the pharyngeal bot fly, Pharyngomyia picta (Diptera: Oestridae)

Martín‐Vega

Clark

Hall

2023

Medical Vet Entomology

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Oestrid flies (Diptera: Oestridae) are obligate parasites of mammals during their larval stage and show anatomical adaptations for the infestation of host tissues. Unlike the species that parasitize domestic mammals, those oestrid species that infest wild mammal hosts remain poorly known. With the use of x‐ray micro‐computed tomography, we describe for the first time the anatomy of the digestive and excretory systems of the second and third larval instars of Pharyngomyia picta (Meigen), a parasite of cervids that, like other species within the subfamily Oestrinae, causes nasopharyngeal myiasis. Both larval instars of P. picta show a pair of remarkably large salivary glands arranged in a characteristic ‘glandular band’, a convoluted and thickly uniform midgut and a greatly enlarged distal region of the anterior pair of Malpighian tubules. These anatomical features also have been described in other species within the subfamily Oestrinae, whereas they differ from the observations in other oestrid subfamilies. We discuss the potential functional significance of the anatomy of the digestive and excretory systems of Oestrinae larvae as specific adaptations to parasitize the nasopharyngeal cavities of mammal hosts.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Larval anatomy of the digestive and excretory systems of the pharyngeal bot fly, Pharyngomyia picta (Diptera: Oestridae)

Martín‐Vega

Clark

Hall

2023

Medical Vet Entomology

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“…Myiasis, a noun derived from Greek (mya, or fly), has been defined variously by numerous different authors over the years (Colwell et al, 2021). When Frederick William Hope coined the term "myiasis" in 1840, he referred to dipterous larval diseases, as opposed to those caused by other insect larvae, called scholechiasis (Rawat, 2020).…”

Section: Introductionmentioning

confidence: 99%

Use molecular method to detect the screw worm fly in Al-Diwaniyah province

Al-Hameedawi

Jasim

2022

ijhs

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Chrysomya bezziana this study was carried out between October, 2021 to March 31, 2022 in six region from Al-Diwaniyah province. Observe the influence of the month and type of animal on the region's. The total number of animals infected was 33 (1) cattle, (7) lambs, and (35) sheep. Al-muhnawa had the highest rate of infestation, while Al-hamza had the lowest rate of infestation. The highest rate of infestation recorded in March ()% and the lowest in February ()%.Conventional PCR (Polymerase Chain Reaction) was used for molecular identification. A DNA extraction was performed on 50 randomly chosen larvae from the total population. The size of the PCR product (548 pb) For Chrysomya bezziana, from the infected animals larvae were taken to DNA extracted and used following targeting 16S rRNA gene product size (548 bp). There follows sequence analysis to obtain the nucleotide (16S rRNA) gene, and the sequence was recoded in the National Center for Biotechnology (NCBI) with accession numbers (ON059979, ON059980, ON059981, ON059982, ON059983, ON059984, ON059985)Iraq. This gene's homology sequence identity percentage was calculated by comparing it to another globally registered gene (NCBI).

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“…Although morphologic identification has been the traditional approach in ectoparasites, there are species for which no information on the larval stage is available. For instance, although details of larval and pupal morphology have been established in a few species (e.g., Cuterebra ruficrus and Cuterebra tenebrosa ), some species of Cuterebra from South America are known only from a few adult specimens (Colwell and Otranto 2021). Therefore, the molecular approach is an important tool addressing reliable parasite identification when no morphologic diagnostic characters are available.…”

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confidence: 99%

Cuterebra baeri Infecting Grey-Legged Night Monkeys (Aotus griseimembra) and Red Howler Monkeys (Alouatta seniculus) in Colombia

Rondón

Cavallero

Link

et al. 2023

Journal of Wildlife Diseases

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Myiases are parasitic infections caused by the larval stages of some fly species. In American nonhuman primates (NHP), three bot fly species causing cutaneous myiasis have been reported: Cuterebra baeri, Cochliomyia hominivorax, and Dermatobia hominis. Studies on myiasis in NHP are scarce and mainly based on morphologic identification of larvae, while molecular approaches have been barely used. This study aimed to molecularly identify bot flies parasitizing two NHP species living sympatrically in central Colombia. Bot fly larvae were collected from two grey-legged night monkeys (Aotus griseimembra) and from a howler monkey (Alouatta seniculus). Larvae were measured and photographed for morphologic evaluation; subsequent molecular characterizations of a partial region of the cytochrome c oxidase subunit 1 mitochondrial gene were performed. Sequence analysis allowed the identification of all specimens as Cuterebra baeri, enabling confirmation of this species parasitizing Alouatta seniculus and Aotus griseimembra in Colombia.

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Oestrid myiasis at a cross-road

Cited by 4 publications

References 73 publications

Larval anatomy of the digestive and excretory systems of the pharyngeal bot fly, Pharyngomyia picta (Diptera: Oestridae)

Larval anatomy of the digestive and excretory systems of the pharyngeal bot fly, Pharyngomyia picta (Diptera: Oestridae)

Use molecular method to detect the screw worm fly in Al-Diwaniyah province

Cuterebra baeri Infecting Grey-Legged Night Monkeys (Aotus griseimembra) and Red Howler Monkeys (Alouatta seniculus) in Colombia

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