It is marine: distinguishing a new species of<i>Catatropis</i>(Digenea: Notocotylidae) from its freshwater twin

Gonchar, Anna; Галактионов, К. В.

doi:10.1017/s0031182020001808

Cited by 10 publications

(9 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main reasons are: (1) lack of faunistic data in many regions; (2) phenotypic variation; (3) the existence of cryptic or just hardly distinguishable species; and (4) the complex life cycles (Cribb, 2016). Happily, an integrative approach incorporating molecular genetics and modern morphological methods applied to different life-cycle stages gives the opportunity to bring the research on the digenean diversity to a new level (Georgieva et al ., 2013; Gilardoni et al ., 2020; Gonchar and Galaktionov, 2021; Huston et al ., 2021; Faltýnková et al ., 2022). This approach has been barely used for one of the most widespread digenean taxa parasitizing fish – the superfamily Hemiuroidea.…”

Section: Introductionmentioning

confidence: 99%

Species complexes and life cycles of digenetic trematodes from the family Derogenidae

et al. 2022

Self Cite

View full text Add to dashboard Cite

The best way to study digenean diversity combines molecular genetic methods, life-cycle studies and elaborate morphological descriptions. This approach has been barely used for one of the most widespread digenean taxa parasitizing fish – the superfamily Hemiuroidea. Here, we applied the integrative approach to the hemiuroideans from the family Derogenidae parasitizing fish at the White and Barents Seas. Analysis of 28S, 18S, 5.8S rDNA, ITS2 and cox1 gene sequences from sexually adult worms (maritae) showed genetic heterogeneity for 2 derogenid species known from this area: Derogenes varicus and Progonus muelleri. Thus, 2 pairs of genetic lineages were found: DV1 and DV2, PM1 and PM2, respectively. Data from other regions indicate that 2 more lineages of D. varicus probably exist. Based on previous records from the White and Barents Seas, we hypothesized that the cercariae found in the moonsnails (family Naticidae) belong to the Derogenidae and may help to differentiate these lineages as species. According to our results, Cercaria appendiculata from Cryptonatica affinis matched DV1, similar nameless cercariae from Euspira pallida and Amauropsis islandica matched DV2, and Cercaria octocauda from C. affinis matched PM1. We provide new data on the structure of these cercariae and discuss the life-cycle pattern of the studied digeneans.

show abstract

Section: Introductionmentioning

confidence: 99%

Species complexes and life cycles of digenetic trematodes from the family Derogenidae

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…This study describes both morphologically and genetically two new genera and species of avian schistosomes from gulls in Argentina. Nowadays, morphological descriptions are supplemented with molecular characterization (Blasco-Costa et al ., 2016; Gonchar and Galaktionov, 2021). This combination is useful for species determination whose morphological characters may not reveal enough variation, e.g.…”

Section: Discussionmentioning

confidence: 99%

“…using all available data such as morphological and molecular data, host use and geographic distribution) for detecting and delimiting genera and species, and placing them within a phylogenetic context (e.g. Brower, 2010; Cremonte et al ., 2015; Blasco-Costa et al ., 2016; Renner, 2016, Bray et al ., 2021; Gagnon et al ., 2021; Gonchar and Galaktionov, 2021). Such efforts have increased the identification of trematode species, or at least distinct lineages, when several of them could not be differentiated morphologically (e.g.…”

Section: Introductionmentioning

confidence: 99%

Two new genera and species of avian schistosomes from Argentina with proposed recommendations and discussion of the polyphyletic genus Gigantobilharzia (Trematoda, Schistosomatidae)

Lorenti¹,

Brant

Gilardoni

et al. 2022

Parasitology

View full text Add to dashboard Cite

Gigantobilharzia Odhner, 1910 (Schistosomatidae) includes species that parasitize several orders of birds and families of gastropods from both freshwater and marine environments worldwide. Due to their delicate bodies, most of the species descriptions are incomplete, and lumped in the genus Gigantobilharzia, in some cases despite major morphological variability. Only three of those species have molecular sequence data but then lack a robust morphological description, making species differentiation very difficult. For this reason, several authors consider that many of the species of Gigantobilharzia should be reassigned to new genera. The aim of this paper is to describe two new genera and two new species of schistosomes using morphological and molecular characterization. We described Marinabilharzia patagonense n. g., n. sp. parasitizing Larus dominicanus from north Patagonian coast, and Riverabilharzia ensenadense n. g., n. sp. parasitizing L. dominicanus, Chroicocephalus maculipennis and Chroicocephalus cirrocephalus from freshwater Río de La Plata, in South America, Argentina. We then analysed and discussed the combinations of characters defining species of Gigantobilharzia and, based on that and on the available molecular data, we propose at least four possible new genera.

show abstract

“…All sequences have been deposited in GenBank. The other available 28S sequences of the specimens of family Notocotylidae from GenBank were taken to compare with the species here described (Table 1 from Capasso et al ., 2020) and Catatropis onobae Gonchar and Galaktionov, 2021 (Gonchar and Galaktionov, 2021).…”

Section: Methodsmentioning

confidence: 99%

Paramonostomum deseado n. sp. (Digenea: Notocotylidae) parasitizing the South American Black Oystercatcher and their atypical life cycle from the Patagonian coast

et al. 2022

View full text Add to dashboard Cite

By way of morphological and molecular analysis we describe a new species of notocotylid, Paramonostomum deseado n. sp., parasitizing Haematopus ater from Argentina and we contribute to elucidate its life cycle. Within this genus, 4 groups can be morphologically distinguished according to body shape: ‘Oval’, ‘Pyriform’, ‘Elongate’, ‘Overlong’. The new species belongs to the ‘Elongate group’, which presents a wide variation in body length (597–4500 μm). The new species, Paramonostomum caeci from Australia, Paramonostomum actitidis from the Caribbean and Paramonostomum alveoelongatum from Russia share the smallest range of body size in this group (<1130 μm). The new species more closely resembles P. actitidis but differs from it by cirrus-sac length, which is shorter in the new species (97–146 vs 280–430 μm in P. actitidis), and egg size which is larger in the new species (25–33 vs 18–20 μm in P. actitidis). Paramonostomum deseado n. sp. uses the limpet Nacella magellanica as both first and second intermediate hosts in which metacercariae encyst inside the redia. This is the first abbreviated cycle described for notocotylid species. Ribosomal RNA sequences provided for adults (ITS1, ITS2 and 28S) and metacercariae inside the rediae (ITS1) support the species identification and the correspondence among stages. Phylogenetic analysis based on 28S placed P. deseado n. sp. close to other Notocotylus spp. and Paramonostomum anatis. Molecular results demonstrate that the hosts involved in the life cycles and the habitat more than morphological differences are determining the phylogenetic relationships in members of Notocotylidae.

show abstract

It is marine: distinguishing a new species ofCatatropis(Digenea: Notocotylidae) from its freshwater twin

Cited by 10 publications

References 42 publications

Species complexes and life cycles of digenetic trematodes from the family Derogenidae

Species complexes and life cycles of digenetic trematodes from the family Derogenidae

Two new genera and species of avian schistosomes from Argentina with proposed recommendations and discussion of the polyphyletic genus Gigantobilharzia (Trematoda, Schistosomatidae)

Paramonostomum deseado n. sp. (Digenea: Notocotylidae) parasitizing the South American Black Oystercatcher and their atypical life cycle from the Patagonian coast

Contact Info

Product

Resources

About