A new African species of parasitic Dero (Annelida, Clitellata, Naididae) in the urinary tract of reed frogs

Sinsch, Ulrich; Dehling, J. Maximilian; Scheid, Patrick; Balczun, Carsten

doi:10.1007/s00436-019-06532-2

Cited by 5 publications

(13 citation statements)

References 22 publications

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“…The jackknife estimate of the actual total number of parasite and endocommensal species comprising the community was 8.9 ± 0.2 (mean and corresponding 95% confidence interval) in H. kivuensis, and 11.0 ± 0.2 in H. viridiflavus, suggesting the presence of one overlooked species. [17][18][19]. Two digenetic trematodes were identified morphologically as adult Glypthelmins africana Dollfus, 1950 and Gorgoderina africana Meskal, 1970, respectively [44,45].…”

Section: Parasite-community Structure: Species Richness Abundance And...mentioning

confidence: 99%

“…To test these predictions, we first assessed the taxonomic identity (α-diversity) and seasonal dynamics of endoparasite species infesting these frogs. Current knowledge is limited to six identified species [18][19][20]. Consequently, we collected more than 100 specimens per host species from syntopic and allopatric populations at the beginning, the middle and the end of the rainy periods that determine the reproductive behavior and general activity of frogs.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, we collected more than 100 specimens per host species from syntopic and allopatric populations at the beginning, the middle and the end of the rainy periods that determine the reproductive behavior and general activity of frogs. We quantified the frequency of infested host specimens and identified the parasites taxonomically by combining morphological and molecular methods [18][19][20]. The resulting data set was conclusive to evaluate the predictions with respect to the ecological fitting of component parasite communities and their impact on the growth and survival of their hosts.…”

Section: Introductionmentioning

confidence: 99%

“…Vertical lines give the standard deviation for each estimate. Details on the morphological and molecular identification of six species (Dero rwandae Sinsch, Dehling, Scheid & Balczun, 2019, Orneoascaris chrysanthemoides Skrjabin, 1916, Orneoascaris schoutedeni (Baylis, 1940), Aplectana chamaeleonis (Baylis, 1929), Rhabdias collaris Baker, 1987, Clinostomum chabaudi Vercammen-Grandjean, 1960) have been published by our research group elsewhere[17][18][19]. Two digenetic trematodes were identified morphologically as adult Glypthelmins africana Dollfus, 1950 and Gorgoderina africanaMeskal, 1970, respectively[44,45].…”

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confidence: 99%

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Component Endoparasite Communities Mirror Life-History Specialization in Syntopic Reed Frogs (Hyperolius spp.)

et al. 2021

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Most of our knowledge on the processes structuring parasite communities in amphibians originate from temperate-zone taxa, whereas Afrotropical communities have been neglected so far. We found evidence that ecological fitting of the hosts and, probably, differential immune response may influence the variation in parasite species richness, prevalence, and infestation intensity of East African frogs Hyperolius kivuensis and H. viridiflavus. The most closely related host species share the same macrohabitat (that implies the same pool of potential parasites), but differ in microhabitat preference, so that a comparative analyses of syntopic and allopatric populations is expedient to reveal ecological fitting. We detected 11 parasite species (one annelid, four nematodes, five trematodes, one cestode) and two endocommensal species (protozoans). The component parasite communities included 4–5 helminth species in H. kivuensis and 6–8 in the more aquatic H. viridiflavus, supporting the hypothesis that trematode diversity increases with the amount of time spent in water. Five parasite species (Orneoascaris chrysanthemoides, Clinostomum chabaudi, an undetermined echinostomatid) and two protozoans (Nyctotheroides sp., and Protoopalina sp.) are shared among the syntopic amphibian populations. This finding indicates a similar susceptibility of these amphibians to infestation from the local parasite pool. Yet, the low prevalence of single- and multi-species infestations in H. kivuensis indicates that parasite clearing by its immune response is probably more effective and prominent than in H. viridiflavus. Therefore, H. viridiflavus suffered from significantly reduced short-term survival due to the infection. Thus, we conclude that the processes structuring component parasite communities in amphibians do not differ generally between temperate-zone and Afrotropical host species, but they do in the magnitude of ecological fitting.

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Section: Parasite-community Structure: Species Richness Abundance And...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Component Endoparasite Communities Mirror Life-History Specialization in Syntopic Reed Frogs (Hyperolius spp.)

et al. 2021

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“…Furthermore, some recent phylogenetic studies, which comprised species from the Albertine Rift used samples from Rwanda [64][65][66][67][68][69][70][71][72][73][74][75]. Our own contributions published so far have focused on amphibian communities in anthropogenically altered habitats [76][77][78][79], studies on the taxonomy and ecology of the genera Hyperolius [58,62,[80][81][82][83][84][85], Afrixalus [86,87], and Ptychadena [88][89][90], and amphibian parasites [91][92][93][94][95].…”

Section: Introductionmentioning

confidence: 99%

Amphibians of Rwanda: Diversity, Community Features, and Conservation Status

Dehling

Sinsch

2023

Diversity

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The diversity and distribution of the amphibians in Rwanda was critically reviewed to provide a reliable species inventory for informed conservation management. The checklist of the amphibian species of Rwanda is based on results of our own fieldwork, historical records compiled from the literature, and examination of voucher specimens in museum collections. A total of 62 species are recorded, and 22 further species listed in field guides and open-access data bases are discussed, identified as erroneous records, and consequently not included in the country list. We provide diagnostic characters of external morphology and the advertisement call for each validated species, and a short synopsis of geographic distribution, altitudinal range, occurrence in the provinces of Rwanda, and habitat preference. We provide keys to all genera, and all taxonomically described species based on morphological characters and additional keys based on features of the advertisement calls. We discuss features of amphibian communities including local community structure and delimitation of altitudinal metacommunities. Based on the IUCN red list assessment and our field surveys, we propose for the first time a national red list of amphibians in Rwanda.

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New insights into a poorly known parasite, Dero lutzi (Oligochaeta: Naididae), associated with tree frogs of the genus Scinax: morphological evaluation and genotypic data

Silva,

Soares,

Malta

et al. 2024

Rev. Bras. Parasitol. Vet.

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The oligochaete Dero lutzi follows a life strategy that alternates between free-living periods in aquatic environments and endoparasitic phases. Most occurrences of D. lutzi in anurans are reported in species with arboreal habits, with studies limited to the recording of the oligochaete’s presence in the host. Our study recovered specimens of D. lutzi from the tree frogs Scinax fuscovarius and Scinax. nasicus. We performed a morphological assessment of the parasite using light microscopy, for the first time, scanning electron microscopy. Molecular characterization of D. lutzi was carried out using the mitochondrial gene 16S rRNA and the nuclear gene 28S rRNA. Additionally, a phylogenetic tree was constructed to assess the species´position in relation to other group members. In our results, we confirmed the phenotypic morphological characteristics of the endoparasitic phase of D. lutzi. We also presented its phylogenetic position with other oligochaetes in the group, demonstrating the proximity between the endoparasite D. lutzi and the free-living oligochaete D. superterrenus.

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A new African species of parasitic Dero (Annelida, Clitellata, Naididae) in the urinary tract of reed frogs

Cited by 5 publications

References 22 publications

Component Endoparasite Communities Mirror Life-History Specialization in Syntopic Reed Frogs (Hyperolius spp.)

Component Endoparasite Communities Mirror Life-History Specialization in Syntopic Reed Frogs (Hyperolius spp.)

Amphibians of Rwanda: Diversity, Community Features, and Conservation Status

New insights into a poorly known parasite, Dero lutzi (Oligochaeta: Naididae), associated with tree frogs of the genus Scinax: morphological evaluation and genotypic data

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