Supplementary studies of Pleurogenoides medians (Digenea: Lecithodendriidae) infecting the Marsh frog Rana Ridibunda (Amphibia: Ranidae) in Egypt

Abdel‐Gaber, Rewaida; Maher, Sherein; Kamel, R.; Deeb, Nashwa El

doi:10.1016/j.bjbas.2017.03.001

Cited by 3 publications

(5 citation statements)

References 19 publications

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“…The higher overall infestation of larger hosts in our study was in line with other studies (Andreas, 2006;Abdel-Gaber et al, 2017;Toledo et al, 2017;Kuzmin et al, 2020) and could be caused either by higher parasite intake rates by larger hosts or by the accumulation of parasites with host age (Poulin, 2007). Our data suggest the presence of both mechanisms in the studied infracommunities: in intermediate-host generalist plagiorchiid trematodes, P. claviger and P. medians, which have a short-living adult stage in frogs (Sudarikov et al, 2002), higher infection rates in larger frogs could be attained by an increase of prey intake volumes over the ontogeny, while in A. alata mesocercaria, a similar trend could be caused by a larger frog's ability to consume infected preyfor example, tadpoles (Pearson, 1956)and subsequent accumulation of a long-living parasite stage (Möhl et al, 2009).…”

supporting

confidence: 94%

“…Surprisingly few studies in Western Palearctic amphibians have paid attention to species associations, relationship with host size or the habitat effect other than simple terrestrial vs. aquatic division. Some of these surveys confirm species richness or parasite total abundances as being higher in larger hosts (Andreas, 2006;Kuzmin et al, 2020), while others indicate the prevalence and intensity being positively related to the host size in separate trematode species (Abdel-Gaber et al, 2017;Ozoliņa et al, 2021) or describe changes in the post-metamorphic ranid frog infracommunities along the urbanization gradient (Vershinin et al, 2017). Antagonism between some nematode and trematode species has been noted in communities in the Danube basin (Bjelić-Čabrilo et al, 2009).…”

Section: Introductionmentioning

confidence: 94%

“…The independent unit in our parasite-host size analyses was a sample, but in the parasite-waterbody size analyses it was a site. We pooled data from both hosts' sexes because their separate analyses produced basically the same results but strongly reduced data pool, and several studies have confirmed the absence of effect of sex on helminth prevalence and intensities in given host taxa (Andreas, 2006;Abdel-Gaber et al, 2017;Ozoliņa et al, 2021).…”

Section: Data Analysesmentioning

confidence: 99%

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Helminth communities in amphibians from Latvia, with an emphasis on their connection to host ecology

et al. 2021

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Helminth infracommunities were studied at 174 sites of Latvia in seven hosts from six amphibian taxa of different taxonomical, ontogenic and ecological groups. They were described using a standard set of parasitological parameters, compared by ecological indices and linear discriminant analysis. Their species associations were identified by Kendall's rank correlation, but relationships with host size and waterbody area were analysed by zero-inflated Poisson and zero-inflated negative binomial regressions. The richest communities (25 species) were found in post-metamorphic semi-aquatic Pelophylax spp. frogs, which were dominated by trematode species of both adult and larval stages. Both larval and terrestrial hosts yielded depauperate trematode communities with accession of aquatic and soil-transmitted nematode species, respectively. Nematode loads peaked in terrestrial Bufo bufo. Helminth infracommunities suggested some differences in host microhabitat or food object selection not detected by their ecology studies. Associations were present in 96% of helminth species (on average, 7.3 associations per species) and dominated positive ones. Species richness and abundances, in most cases, were positively correlated with host size, which could be explained by increasing parasite intake rates over host ontogeny (trematode adult stages) or parasite accumulation (larval Alaria alata). Two larval diplostomid species (Strigea strigis, Tylodelphys excavata) had a negative relationship with host size, which could be caused by parasite-induced host mortality. The adult trematode abundances were higher in larger waterbodies, most likely due to their ecosystem richness, while higher larval abundances in smaller waterbodies could be caused by elevated infection rates under high host densities.

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supporting

confidence: 94%

Section: Introductionmentioning

confidence: 94%

Section: Data Analysesmentioning

confidence: 99%

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Helminth communities in amphibians from Latvia, with an emphasis on their connection to host ecology

et al. 2021

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“…Pleurogenoides tener is a common digenean of amphibians and some reptile species [16] . In Egypt, only two species of Pleurogenoides (P. tener and P. medians) were reported [6,16] .…”

Section: Discussionmentioning

confidence: 99%

“…Pleurogenoides tener is a common digenean of amphibians and some reptile species [16] . In Egypt, only two species of Pleurogenoides (P. tener and P. medians) were reported [6,16] . The present specimen was very similar to P. tener reported previously by Groschaft and Moravec [6] .…”

Section: Discussionmentioning

confidence: 99%

Gastrointestinal helminths of lizards (Reptilia: Squamata) from Egypt

Elmahy

Harras

2019

Parasitologists United Journal

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Background: Despite the fact that Egypt contains a large number of lizard species, yet there is little knowledge recorded regarding the helminth fauna infecting this group of hosts. A parasitological study on gastrointestinal helminths of lizards was carried out during Summer (August) and Autumn (September and October), 2014 and 2015, respectively. Objective: This study aims to update information on helminth parasites that infect lizards in Egypt. Material and Methods: Seven species of lizards,

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Helminth Fauna of the Yellow-bellied Toad, Bombina variegata (Linnaeus, 1758) Collected From Northwestern of Türkiye

YILDIRIMHAN,

SÜMER,

REDHWAN

et al. 2024

Preprint

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In this study, 45 individuals (18 female, 20 male, and 7 juvenile) of the Yellow-bellied Toad, Bombina variegata were collected from Karacahasan Mountain region (located in the Enez district of Edirne province in northwestern Türkiye) in 2015–2016 and examined for helminths. Two species of Digenea (Gorgodera cygnoides and Pleurogenoides medians) and one species of Acanthocephala (Acanthocephalus ranae) were found. This study is the first helminth study and only helminth study conducted on B. variegata from Türkiye.

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Supplementary studies of Pleurogenoides medians (Digenea: Lecithodendriidae) infecting the Marsh frog Rana Ridibunda (Amphibia: Ranidae) in Egypt

Cited by 3 publications

References 19 publications

Helminth communities in amphibians from Latvia, with an emphasis on their connection to host ecology

Helminth communities in amphibians from Latvia, with an emphasis on their connection to host ecology

Gastrointestinal helminths of lizards (Reptilia: Squamata) from Egypt

Helminth Fauna of the Yellow-bellied Toad, Bombina variegata (Linnaeus, 1758) Collected From Northwestern of Türkiye

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