ParasitologyPub Date : 2024-11-26DOI: 10.1017/S003118202400129X
Rodrigo Bravin Narciso, Nico J Smit, Gilmar Perbiche-Neves, Reinaldo José da Silva
{"title":"Integrative taxonomy approach to the study of parasitic ergasilids (Cyclopoida: Ergasilidae) of fishes from the Pardo River, Brazil with a redescription of <i>Rhinergasilus piranhus</i> Boeger and Thatcher, 1988 and a molecular phylogeny for Ergasilidae.","authors":"Rodrigo Bravin Narciso, Nico J Smit, Gilmar Perbiche-Neves, Reinaldo José da Silva","doi":"10.1017/S003118202400129X","DOIUrl":"https://doi.org/10.1017/S003118202400129X","url":null,"abstract":"<p><p>Brazil has the richest biodiversity of Ergasilidae on Earth, with 76 species in 19 genera. However, several authors suggested that there is still great potential for discoveries, especially regarding genetic data that are still scarce for ergasilids from this region. To expand our knowledge of this taxon, we conducted an integrative study involving morphological (light and scanning electron microscopy) and molecular analyses of ergasilids from fishes sampled in the Pardo River, São Paulo State, Brazil. Two ergasilid species were found, <i>Gamispatulus schizodontis</i> and <i>Rhinergasilus piranhus</i> parasitizing the nostrils of 5 fish species (native and exotic): (i) <i>R. piranhus</i> from <i>Astyanax lacustris</i>; <i>Cyphocharax modestus</i>; <i>Coptodon rendalli</i>; <i>Psalidodon bockmanni</i>; and (ii) <i>G. schizodontis</i> from <i>Serrasalmus maculatus</i>. Additionally, we redescribed <i>R. piranhus</i> herein based on novelties and discrepancies found in the antennules, antennae, body segments and ornamentation of the swimming legs. Novel molecular data of ribosomal (18S and 28S rDNA) and/or mitochondrial (cox 1) genes were provided for both species and the phylogenetic relationships among the ergasilids were tested. Relationships between species/genera are still uncertain in Ergasilidae, but it was possible to verify the formation of 5 well-supported terminal clades – i.e. including a clade formed only by Neotropical species. More molecular data are needed to test this hypothesis, but the clades observed here represent good targets for future taxonomic revisions. The occurrence of <i>R. piranhus</i> specimens in the introduced fish, <i>Co. rendalli</i> can indicate (for the first time) host switching in this parasite species and spillback from native to introduced hosts.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-24"},"PeriodicalIF":2.1,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142716830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Distribution and evidence of co-infection of the two microsporidian parasites <i>Astathelohania contejeani and Nosema austropotamobii in Austropotamobius pallipes</i> complex in Northern and Central Italy.","authors":"Gianluca Fea, Daniela Ghia, Andrea Basso, Valentina Paolini, Roberto Sacchi, Tobia Pretto","doi":"10.1017/S0031182024001525","DOIUrl":"https://doi.org/10.1017/S0031182024001525","url":null,"abstract":"","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-36"},"PeriodicalIF":2.1,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ParasitologyPub Date : 2024-11-21DOI: 10.1017/S0031182024000702
Jia Y Zhai, Peng Z Qi, Xiao A Yang, Zhong J Ren, Zi H Zhang, Jia X Gao, Deng H Zhu, Pei P Fu
{"title":"First record of <i>Perkinsus beihaiensis</i> in cultured mussels <i>Mytilus coruscus</i> in the East China Sea.","authors":"Jia Y Zhai, Peng Z Qi, Xiao A Yang, Zhong J Ren, Zi H Zhang, Jia X Gao, Deng H Zhu, Pei P Fu","doi":"10.1017/S0031182024000702","DOIUrl":"https://doi.org/10.1017/S0031182024000702","url":null,"abstract":"<p><p>During the investigation of parasitic pathogens of <i>Mytilus coruscus</i>, infection of a <i>Perkinsus</i>-like protozoan parasite was detected by alternative Ray's Fluid Thioglycolate Medium (ARFTM). The diameter of hypnospores or prezoosporangia was 8–27 (15.6 ± 4.0, <i>n</i> = 111) μm. The prevalence of the <i>Perkinsus</i>-like species in <i>M. coruscus</i> was 25 and 12.5% using ARFTM and PCR, respectively. The ITS1-5.8S-ITS2 fragments amplified by PCR assay had 100% homology to that of <i>P. beihaiensis</i>, suggesting that the protozoan parasite was <i>P. beihaisensis</i> and <i>M. coruscus</i> was its new host in East China Sea (ECS). Histological analysis showed the presence of trophozoites of <i>P. beihaiensis</i> in gill, mantle and visceral mass, and the schizonts only found in visceral mass. <i>Perkinsus beihaiensis</i> infection led to inflammatory reaction of hemocyte and the destruction of digestive tubules in visceral mass, which had negative effect on health of the farmed <i>M. coruscus</i> and it deserves more attention.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ParasitologyPub Date : 2024-11-21DOI: 10.1017/S0031182024001550
Linda van der Spuy, Rodrigo B Narciso, Kerry A Hadfield, Victor Wepener, Nico J Smit
{"title":"Exploring South Africa's hidden marine parasite diversity: two new marine <i>Ergasilus</i> species (Copepoda: Cyclopoida: Ergasilidae) from the Evileye blaasop, <i>Amblyrhynchote honckenii</i> (Bloch).","authors":"Linda van der Spuy, Rodrigo B Narciso, Kerry A Hadfield, Victor Wepener, Nico J Smit","doi":"10.1017/S0031182024001550","DOIUrl":"https://doi.org/10.1017/S0031182024001550","url":null,"abstract":"","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-64"},"PeriodicalIF":2.1,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ParasitologyPub Date : 2024-11-20DOI: 10.1017/S0031182024000994
Edyta Podmokła, Anna Dubiec, Bartosz Pluciński, Bartłomiej Zając, Lars Gustafsson
{"title":"Haemoparasite infection risk in multi-host avian system: an integrated analysis.","authors":"Edyta Podmokła, Anna Dubiec, Bartosz Pluciński, Bartłomiej Zając, Lars Gustafsson","doi":"10.1017/S0031182024000994","DOIUrl":"https://doi.org/10.1017/S0031182024000994","url":null,"abstract":"<p><p>Avian blood parasites play a crucial role in wildlife health and ecosystem dynamics, exhibiting heterogeneous spatial distribution influenced by various factors. Although factors underlying heterogeneity in infection with blood parasites have been explored in many avian hosts, their importance in the context of host species and the parasite taxon remains poorly understood, particularly in cohabiting host species. Using next-generation sequencing for parasite screening, we investigate the association between <i>Haemoproteus</i>, <i>Plasmodium</i> and <i>Trypanosoma</i> infections in relation to individual parameters, host densities and landscape features in 3 cavity-nesting passerines: great tit (<i>Parus major</i>), blue tit (<i>Cyanistes caeruleus</i>) and collared flycatcher (<i>Ficedula albicollis</i>) in a highly fragmented forest habitat. Overall, <i>Haemoproteus</i> infections predominated, followed by <i>Plasmodium</i> and <i>Trypanosoma</i>, with great tits most and collared flycatchers least parasitized. There were no common patterns across host species in the probability of infection with locally transmitted parasites from each genus. Specifically, in all cases, the effect of particular parameters, if present, was observed only in 1 host species. Body condition influenced <i>Haemoproteus</i> and <i>Plasmodium</i> infections differently in tits. Host density, whether own species or all pooled, explained <i>Haemoproteus</i> infections in great tits and collared flycatchers, and <i>Plasmodium</i> in great tits. Landscape metrics, such as moisture index and distance to coast edge and pastures, affected infection probability in specific host–parasite combinations. Relative risk maps revealed infection risk gradients, but spatial variation repeatability over time was low. Our study highlights the complex dynamics of avian blood parasites in multi-host systems, shedding light on host–parasite interactions in natural ecosystems.</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-12"},"PeriodicalIF":2.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ParasitologyPub Date : 2024-11-20DOI: 10.1017/S0031182024001252
Daniel C Huston, Scott C Cutmore, Thomas H Cribb, Pierre Sasal, Russell Q-Y Yong
{"title":"Taxonomy and systematics of <i>Emprostiotrema</i> Cianferoni and Ceccolini, 2021 (Digenea: Emprostiotrematidae), parasites of rabbitfish (Siganidae) from the Indo-West Pacific marine region.","authors":"Daniel C Huston, Scott C Cutmore, Thomas H Cribb, Pierre Sasal, Russell Q-Y Yong","doi":"10.1017/S0031182024001252","DOIUrl":"https://doi.org/10.1017/S0031182024001252","url":null,"abstract":"<p><p><i>Emprostiotrema</i> contains just 3 species: <i>E. fusum</i>, <i>E. kuntzi</i> and <i>E. sigani</i>. As adults, all 3 species infect rabbitfishes (Siganidae: <i>Siganus</i>). New collections from 11 species of <i>Siganus</i> from northern Australia, Indonesia, New Caledonia, French Polynesia, Palau and Japan enabled an exploration of species composition within this genus. Phylogenetic analyses demonstrate a deep distinction between 2 major clades; clade 1 comprises most of the sequences of specimens from Australia as well as all of those from Japan, Palau and New Caledonia and clade 2 comprises all sequences of specimens from French Polynesia, 2 sequences from Australia and the single sequence from Bali. In all analyses, both major clades have genetic structuring leading to distinct geographic lineages. Morphologically, specimens relating to clades 1 and 2 differ but overlap in body shape, oral sucker and egg size. Principle component analysis shows a general (but not complete) separation between specimens relating to the 2 clades. We interpret the 2 clades as representing 2 species: clade 1 is identified as <i>E. fusum</i> and is reported in this study from 10 species of siganids from Australia, Japan, Palau and New Caledonia; clade 2 is described as <i>E. gotozakiorum</i> n. sp., for all specimens from French Polynesia and rare specimens from Australia and Indonesia. We recognize <i>E. sigani</i> as a junior synonym of <i>E. fusum</i>. Although species of <i>Emprostiotrema</i> occur widely in the tropical Indo-Pacific, they have not been detected from Ningaloo Reef (Western Australia), the southern Great Barrier Reef or Moreton Bay (southern Queensland).</p>","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-15"},"PeriodicalIF":2.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ParasitologyPub Date : 2024-11-20DOI: 10.1017/S003118202400146X
Tony L Goldberg, Addiel U Perez, Lewis J Campbell
{"title":"Isopods infesting Atlantic bonefish (<i>Albula vulpes</i>) host novel viruses, including reoviruses related to global pathogens, and opportunistically feed on humans.","authors":"Tony L Goldberg, Addiel U Perez, Lewis J Campbell","doi":"10.1017/S003118202400146X","DOIUrl":"https://doi.org/10.1017/S003118202400146X","url":null,"abstract":"","PeriodicalId":19967,"journal":{"name":"Parasitology","volume":" ","pages":"1-39"},"PeriodicalIF":2.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}