Overview of Parasitic Helminth Diversity: How Molecular Systematics Is Involved

Thaenkham, Urusa; Chaisiri, Kittipong; Chan, Abigail Hui En

doi:10.1007/978-981-19-1786-8_3

Cited by 3 publications

(2 citation statements)

References 136 publications

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“…10B). We suggest that historical introgressive hybridization might have enabled Ligula to infect a broader range of host species (Osmeriformes, Gobiiformes and Galaxiiformes), similar to adaptation of hybrids of nonparasitic taxa to novel ecological conditions where their parents could not persist (Thaenkham et al, 2022). However, future testing of specific questions related to adaptive introgression will require extended sampling and a well-resolved and annotated genome assembly.…”

Section: Genome-wide Hybridization and Introgressionmentioning

confidence: 97%

Historical dispersal and host-switching formed the evolutionary history of a globally distributed multi-host parasite – The Ligula intestinalis species complex

Nazarizadeh

Nováková

Loot

et al. 2023

Molecular Phylogenetics and Evolution

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Section: Genome-wide Hybridization and Introgressionmentioning

confidence: 97%

Historical dispersal and host-switching formed the evolutionary history of a globally distributed multi-host parasite – The Ligula intestinalis species complex

Nazarizadeh

Nováková

Loot

et al. 2023

Molecular Phylogenetics and Evolution

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“…This process generates distinct banding patterns, enabling differentiation between various strains or isolates of the parasite [11]. Furthermore, it offers a rapid and sensitive means of detecting the parasite's DNA in clinical samples, such as stool or tissue specimens, even at low concentrations [12]. This sensitivity is particularly valuable for early detection and accurate diagnosis, particularly in scenarios where conventional methods may produce false negatives [13].…”

Section: Introductionmentioning

confidence: 99%

Genetic relatedness and diversity of Capillaria species infecting bayad (Bagrus bajad) in upper Egypt

Abd-Elrahman,

Abdel-Rahman,

Bakir

et al. 2024

BMC Vet Res

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Background This study investigates the genetic characteristics of Capillaria isolates from the infected fish, Bagrus bajad, and their relation to human Capillaria philippinensis using Random Amplified Polymorphic DNA (RAPD-PCR) analysis. Fifteen fish Capillaria were isolated and compared to identified human C. philippinensis using six primers: M-are, M-1, G-7, G-11, G-15, and G-18. Results All six primers successfully amplified DNA, highlighting their efficacy in distinguishing between human and fish Capillaria isolates. The analysis revealed distinctive banding patterns between fish and human isolates, with variations in size and number of DNA fragments. Additionally, genetic similarity analysis showed intriguing patterns of relatedness, with certain pairs exhibiting high similarity percentages. Comparative assessment of RAPD polymorphism demonstrated consistent findings of 100% polymorphism across all primers. The Unweighted Pair Group Method with Arithmetic Mean Algorithm (UPGMA) evaluated the closest relationship between human and fish isolates. These results underscore the utility of RAPD analysis in delineating the genetic diversity among Capillaria isolates from different hosts. Conclusion Overall, this study contributes to our understanding of the genetic variability and relatedness among Capillaria isolates, shedding light on their evolutionary dynamics and zoonotic potential.

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Historical dispersal and host-switching formed the evolutionary history of a globally distributed multi-host parasite - theLigula intestinalisspecies complex

Nazarizadeh

Nováková

Loot

et al. 2022

Preprint

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Studies on parasite biogeography and host spectrum provide insights into the processes driving parasite diversification. Global geographical distribution and a multi-host spectrum make the tapeworm Ligula intestinalis a promising model for studying both the vicariant and ecological modes of speciation in parasites. To understand the relative importance of host association and biogeography in the evolutionary history of this tapeworm, we analysed mtDNA and reduced-represented genomic SNP data for a total of 139 specimens collected from 18 fish-host genera across a distribution range representing 21 countries. Our results strongly supported the existence of at least 10 evolutionary lineages and estimated the deepest divergence at approximately 4.99-5.05 Mya, which is much younger than the diversification of the fish host genera and orders. Historical biogeography analyses revealed that the ancestor of the parasite diversified following multiple vicariance events and was widespread throughout the Palearctic, Afrotropical, and Nearctic between the late Miocene and early Pliocene. Cyprinoids were inferred as the ancestral hosts for the parasite. Later, from the late Pliocene to Pleistocene, new lineages emerged following a series of biogeographic dispersal and host-switching events. Although only a few of the current Ligula lineages show narrow host-specificity (to a single host genus), almost no host genera, even those that live in sympatry, overlapped between different Ligula lineages. Our analyses uncovered the impact of historical distribution shifts on host switching and the evolution of host specificity without parallel host-parasite co-speciation. Historical biogeography reconstructions also found that the parasite colonized several areas (Afrotropical and Australasian) much earlier than was suggested by only recent faunistic data.

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Overview of Parasitic Helminth Diversity: How Molecular Systematics Is Involved

Cited by 3 publications

References 136 publications

Historical dispersal and host-switching formed the evolutionary history of a globally distributed multi-host parasite – The Ligula intestinalis species complex

Historical dispersal and host-switching formed the evolutionary history of a globally distributed multi-host parasite – The Ligula intestinalis species complex

Genetic relatedness and diversity of Capillaria species infecting bayad (Bagrus bajad) in upper Egypt

Historical dispersal and host-switching formed the evolutionary history of a globally distributed multi-host parasite - theLigula intestinalisspecies complex

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