Parasitology International最新文献

{"title":"Transcriptomic analysis of immune-related genes in Pacific white snook (Centropomus viridis) gills infected with the monogenean parasite Rhabdosynochus viridisi","authors":"Marian Mirabent-Casals ,&nbsp;Víctor Hugo Caña-Bozada ,&nbsp;Francisco Neptalí Morales-Serna ,&nbsp;Juan Manuel Martínez-Brown ,&nbsp;Rosa María Medina-Guerrero ,&nbsp;Rubí Hernández-Cornejo ,&nbsp;Alejandra García-Gasca","doi":"10.1016/j.parint.2024.102981","DOIUrl":"10.1016/j.parint.2024.102981","url":null,"abstract":"<div><div>The parasite <em>Rhabdosynochus viridisi</em> (Platyhelminthes: Monogenea) infects the Pacific white snook <em>Centropomus viridis</em> gills and can cause adverse effects in the aquaculture industry. The immune responses of Pacific white snook to monogenean infections are poorly understood. Thus, this study aimed to identify differentially expressed genes (DEGs) in the gills of Pacific white snook juveniles experimentally infected with <em>R. viridisi</em>, emphasizing immune-related genes and pathways activated or suppressed during the infection. RNA sequencing was performed on the gills of uninfected (control) and infected fish. The algorithm Seq2Fun was selected without a reference transcriptome to map the reads to transcripts of fishes available from a database for gene orthologs (EcoOmics) and obtain the counting table. The ExpressAnalyst software was used for differential expression and functional analyses. A total of 20,106 transcripts were found, and 1430 (7 %) were differentially expressed genes (DEGs) between infected and control groups. We identified 860 (60 %) downregulated and 570 (40 %) upregulated genes. Thirteen canonical pathways after the Kyoto Encyclopedia of Genes and Genomes (KEGG) database were overrepresented, and most of the DEGs were downregulated, suggesting the inactivation of these pathways. The functions of most of the DEGs with higher fold change found in this study are poorly understood in fish. Even though the well-known pro-inflammatory cytokines remained unchanged in infected gills of <em>C. viridis</em>, and transforming growth factor β (<em>tgfβ</em>) was downregulated, interleukin-17 ligands <em>il17d</em> and <em>il17a/f1</em>, as well as C-X-C motif chemokine receptor 2 (<em>cxcr2</em>) genes were upregulated, indicating that the infection with <em>R. viridisi</em> promotes Th17-like immunity<em>.</em> Overexpression of plasma B cell activity markers such as immunoglobulin light chain-like genes and the v-set pre-B cell surrogate light chain 3 (<em>vpreb3</em>) was also detected in this study. The possible implications of DEGs related to calcium imbalance, hypoxia adaptation, hemostasis, and immunity are discussed. These results will support future studies to improve the prevention and treatment of monogenean infections in finfish aquaculture.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102981"},"PeriodicalIF":1.5,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142472330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distribution and abundance of fleas and rodents of plague importance in the erstwhile endemic states and international seaports of India","authors":"Appadurai Daniel Reegan ,&nbsp;Anok Melvin Marshall ,&nbsp;K.P. Srilatha ,&nbsp;M. Malini ,&nbsp;Shivakumar S. Titti ,&nbsp;Rajesh L. Kademani ,&nbsp;Shubhangi Kulsange ,&nbsp;Monil Singhai","doi":"10.1016/j.parint.2024.102982","DOIUrl":"10.1016/j.parint.2024.102982","url":null,"abstract":"<div><div>Rodents are the reservoirs of the plague bacterium <em>Yersinia pestis</em>, which is transmitted through the bites of infected fleas. In this paper, we studied the distribution and abundance of fleas and rodents in the erstwhile endemic states and seaports of India from 2009 to 2019. The analysis showed that the <em>Rattus rattus</em> (<em>Rr</em>) was the major rodent species found in both Western (66.52 %) and Eastern (48.95 %) seaports of India and the other rodent species recorded were <em>Bandicota indica</em> (<em>Bi</em>) (16.68 % &amp; 34.24 %), <em>Bandicota bengalensis</em> (<em>Bb</em>) (8.88 % &amp; 16.02 %) <em>Rattus norvegicus</em> (<em>Rn</em>) (6.83 % &amp; 0.70 %), <em>Murines hurriane</em> (<em>Mh</em>) (1.08 % &amp; 0 %), <em>Mus musculus</em> (<em>Mm</em>) (0 % &amp; 0.09 %), respectively. Only two flea species namely, <em>Xenopsylla cheopis</em> (<em>X.c</em>) and <em>Xenopsylla astia</em> (<em>X.a</em>) were recorded during the study period in Eastern and Western seaports. Among them, <em>X. astia</em> was found to be the dominant species (55.56 %) and followed by <em>X. cheopis</em> (44.44 %). Further, the female population of <em>X. cheopis</em> and <em>X. astia</em> was higher in both Western and Eastern seaports than the male population. Similarly, <em>Rattus rattus</em> (<em>Rr</em>) (82.43 %,) was the major rodent species found in erstwhile endemic states of India, followed by <em>Tetera indica</em> (<em>Ti</em>) (11.99 %,). Only northern endemic states (HP and UK) reported <em>Rattus rattus terkiminasis</em> (<em>R.rt</em>) (0.01 %). Four flea species namely, <em>Xenopsylla cheopis</em> (64.89 %)<em>, Xenopsylla astia</em> (34.89 %)<em>, Stivalius ahalae</em> (0.18 %), and <em>Nosopsyllus fasciatus</em> (0.02 %) were recorded from endemic states. The presence of rodents and vector fleas warrants sustained plague surveillance in and around seaports and endemic states.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102982"},"PeriodicalIF":1.5,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142472329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence of three important tick-borne pathogens in ticks and humans in Shaanxi Province, Northwest China","authors":"Rui Guan ,&nbsp;Na Wei ,&nbsp;Meng Cao ,&nbsp;Jian-Gong Yang ,&nbsp;Ru Wu ,&nbsp;Hui Li","doi":"10.1016/j.parint.2024.102980","DOIUrl":"10.1016/j.parint.2024.102980","url":null,"abstract":"<div><div>The investigation of important prevalent tick-borne pathogens is central to the control of tick-borne diseases. To understand the prevalence of <em>Borrelia burgdorferi</em> s.l., <em>Borrelia miyamotoi</em>, and the Alongshan virus in ticks and patients in Shaanxi Province, China, a total of 670 adult ticks and 524 patient blood samples were collected in the region between 2022 and 2023. In this study, PCR was used to estimate the prevalence of the three pathogens. The results revealed that the overall positive rates of <em>B. burgdorferi</em> s.l, <em>B. miyamotoi</em>, and ALSV infection in the collected ticks were 13.58 %, 2.46 %, and 4.17 %, respectively. Three genospecies of <em>B. burgdorferi</em> s.l. were detected in this study, namely, <em>B. garinii</em>, <em>B. afzelii</em>, and <em>B. bavariensis</em>, with positive rates of 4.63 %, 3.58 %, and 5.37 %, respectively. The prevalence rates of <em>B. miyamotoi</em>, ALSV  and <em>B. burgdorferi</em> s.l. in the patients were 0.38 %, 0.95 %, and 15 %, respectively. Moreover, <em>B. burgdorferi</em> s.l. and ALSV coinfection was also detected in three patients. Evolutionary analysis revealed that the isolate of <em>B. miyamotoi</em> belongs to the Asian type (Siberian type) and that of ALSV is closely related to that of Finland. To our knowledge, this is the first report on <em>B. miyamotoi</em> and ALSV detection in both ticks and humans in Shaanxi Province; the prevalence indicates that the regions in this province might be endemic areas. The results also suggest that humans in these regions are at risk of infection with these three tick-borne diseases.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102980"},"PeriodicalIF":1.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142406698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopy and molecular survey of Hepatozoon spp. in domestic cats and their ticks: First report of H. silvestris from Türkiye","authors":"Zuhal Önder ,&nbsp;Didem Pekmezci ,&nbsp;Alparslan Yıldırım ,&nbsp;Gökmen Zafer Pekmezci ,&nbsp;Önder Düzlü ,&nbsp;Zeynep Nurselin Kot ,&nbsp;Gamze Nur Konacoğlu ,&nbsp;Gamze Yetişmiş ,&nbsp;Abdullah İnci","doi":"10.1016/j.parint.2024.102979","DOIUrl":"10.1016/j.parint.2024.102979","url":null,"abstract":"<div><div>Hepatozoonosis is a tick-borne infection caused by protozoan species of the <em>Hepatozoon</em> genus in the family Hepatozoidae. This study aimed to determine the presence and prevalence of <em>Hepatozoon</em> spp. in domestic cats and their ticks, to characterize the genotypes, to reveal phylogenetic relationships, and to assess the risk factors associated with infection. Blood samples were collected in EDTA tubes from 311 cats that were brought to the Veterinary Faculty, Animal Hospital for treatment or routine control purposes. Smears were prepared from the buffy coat and <em>examined</em> microscopically for the presence of <em>Hepatozoon</em> spp. <em>gamonts.</em> Ticks were collected during the clinical examination of the cats and the species were identified. Genomic DNA obtained from buffy coats and ticks were analyzed using PCR analyses targeting the 18S rRNA gene region of <em>Hepatozoon</em> spp. The results showed that <em>Hepatozoon</em> spp. gamonts in neutrophils were determined in five samples as 1.6 % (5/311). A total of 58 (18.64 %, 58/311) were positive for the PCR analyses. Twelve ticks were collected from the cats, and all were identified as <em>Rhipicephalus turanicus. Hepatozoon</em> spp. were found in seven (58.3 %) ticks by molecular analyses. Sequence analysis of the 18S rRNA gene region of 58 positive isolates revealed the presence of <em>H. felis</em> (<em>n</em> = 25, 43.1 %) and <em>H. silvestris</em> (<em>n</em> = 33, 56.9 %) species in cats and <em>H. felis</em> in <em>Rh. turanicus</em> (<em>n</em> = 7). This study also presents the first report of <em>H. silvestris</em> in domestic cats from Türkiye. Phylogenetic analyses showed that our <em>H. felis</em> isolates clustered in <em>H. felis</em> genotype I and our <em>H. silvestris</em> were stated in the same cluster with Italian isolates.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102979"},"PeriodicalIF":1.5,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142400975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal detection of pathogens in honeybees kept in natural and laboratory conditions","authors":"Magdalena Kunat-Budzyńska ,&nbsp;Emilia Łabuć ,&nbsp;Aneta A. Ptaszyńska","doi":"10.1016/j.parint.2024.102978","DOIUrl":"10.1016/j.parint.2024.102978","url":null,"abstract":"<div><div>The honeybee is one of the most important pollinators in the world. The frequently observed poor health of honeybee colonies can be caused by various factors, e.g. environmental pollution, nutritional stress, and climate changes. Moreover, honeybees are constantly exposed to a wide spectrum of pathogens, such as parasites, bacteria, and viruses. We examined the occurrence of various diseases in different-aged worker honeybees from two colonies kept in natural and laboratory conditions during spring, summer, and autumn in Poland. The honeybees were examined by PCR to detect infection with selected pathogens: <em>Nosema ceranae, N. apis, N. bombi, Acarapis woodi,</em> trypanosomatids, and neogregarines (<em>Mattesia</em> or <em>Apicystis</em> species) and by RT-PCR to identify deformed wing virus (DWV), black queen cell virus (BQCV), and acute bee paralysis virus (ABPV). DWV and <em>N. ceranae</em> turned out to be the dominant pathogens. Trypanosomatids and BQCV were also found in several samples. We did not detect the presence of the other pathogens: <em>N. apis, N. bombi, A. woodi,</em> neogregarines, or ABPV. As shown in the present study, the dynamics and occurrence of pathogens are influenced by keeping conditions, honeybee age, and seasonality.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102978"},"PeriodicalIF":1.5,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142392327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Miniature pigs as the intermediate host for Taenia asiatica","authors":"Hiroshi Yamasaki ,&nbsp;Hiromu Sugiyama ,&nbsp;Yasuyuki Morishima ,&nbsp;Munehiro Okamoto","doi":"10.1016/j.parint.2024.102977","DOIUrl":"10.1016/j.parint.2024.102977","url":null,"abstract":"<div><div><em>Taenia asiatica</em>, utilizing pigs as an intermediate host, degenerates and/or calcifies within a few months after infection in pigs, whereas <em>Taenia solium</em>, also using pigs as an intermediate host, can develop into a mature metacestode within a couple of months and can survive for prolong periods in pigs. This raises the question of whether pigs are suitable intermediate hosts for <em>T. asiatica.</em> The host-parasite relationships between <em>T. asiatica</em> and pig strains, such as infection rates and development of metacestodes, have been reported in previous studies: however, little is known about the pathological changes that occur in <em>T. asiatica</em> metacestodes in pigs. Therefore, in the present study, the pathological changes in <em>T. asiatica</em> within 30 days of infection were observed using CLAWN miniature pigs as model animals. Metacestodes were observed on the diaphragmatic surface and throughout the parenchyma of the pig liver 9 days after infection; however, these metacestodes were surrounded by eosinophilic abscesses, and some had already begun to degenerate. By day 20 and 30 post-infection, metacestodes were surrounded by eosinophilic abscesses and had completely degenerated without forming a scolex. These results indicate that although <em>T. asiatica</em> infected miniature pigs, the metacestodes degenerated owing to strong immune responses from the pigs. Therefore, the CLAWN miniature pig are not a suitable intermediate host for <em>T. asiatica.</em> The possible reasons why <em>T. asiatica</em> metacestodes were degenerated and the potential roles of pigs in transmitting the parasite to humans in <em>T. asiatica</em>-endemic regions are discussed in this study. Additionally, data debating whether pigs are suitable intermediate hosts for <em>T. asiatica</em> are provided.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102977"},"PeriodicalIF":1.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142381433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elimination of schistosomiasis mekongi in reach for Lao PDR: The last patient with severe disease?","authors":"Phonesavanh Southisavath ,&nbsp;Kerstin Kling ,&nbsp;Anousin Homsana ,&nbsp;Nicole Probst-Hensch ,&nbsp;Daniel Henry Paris ,&nbsp;Somphou Sayasone ,&nbsp;Peter Odermatt","doi":"10.1016/j.parint.2024.102976","DOIUrl":"10.1016/j.parint.2024.102976","url":null,"abstract":"<div><div>Schistosomiasis mekongi is endemic in a restricted area in Northern Cambodia and the Southern Lao People's Democratic Republic. Severe hepatobiliary morbidity is associated with chronic untreated <em>S. mekongi</em> infection. Since the 1980s extensive control efforts have been employed in endemic areas, resulting in substantial reduction of infection rates and disease burden. We report on a patient with a fatal course of clinically-assessed chronic schistosomiasis. This report underscores that patients with severe chronic Mekong schistosomiasis may still exist and may need treatment support.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102976"},"PeriodicalIF":1.5,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142375743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Filling the void: Morphological and molecular phylogenetic analyses of helminths assemblage from the Egyptian egret Bubulcus ibis","authors":"Nada A. Ibrahim ,&nbsp;Ismail M. Shalaby ,&nbsp;Mahi A. Ghobashy ,&nbsp;Azza A. Taeleb ,&nbsp;Elham A. Elkhawass","doi":"10.1016/j.parint.2024.102972","DOIUrl":"10.1016/j.parint.2024.102972","url":null,"abstract":"<div><div>The cattle egret (<em>B. ibis</em>) as a common wader birds in Egypt, they act a sole reservoir for many parasites and play a vital role in their life cycle and their distribution in their environment. The study was conducted from September 2020 to August 2021. A total of 180 <em>B. ibis</em> were collected from Al Qantara Gharb, Ismailia province, Egypt. Parasite species identification infecting cattle egret included morphological and morphometric characteristics based on light and scanning microscopy. Additionally, utilizing the partial small subunit ribosomal RNA (18S rRNA, ITS2 and ITS1) gene sequence, maximum parsimony was used to infer the phylogeny of the recovered species. The morphological and molecular studies revealed three helminths. Only one nematode (<em>Desportesius invaginatus</em>, linstow,1901) and two trematodes (<em>Patagifer bilobus</em>, Dietz,1909 and <em>Apharyngostrigea cornu</em>, Zeder,1800) have been identified. The cattle egret (<em>B. ibis</em>) are protagonists in the life cycle of many parasites. The study is considered the first in Egypt to fill the gap of phylogenetic analysis of three helminths; two of them (<em>A. cornu</em> and <em>P. bilobus</em>) were the first to be molecular phylogenetically analyzed in Egypt. The molecular data provided set the conspecific relation of the three identified helminths species with other related helminths. The new identified sequences will help in founding the basis for forthcoming identifications of other helminths species from cattle egret in Egypt and prospective view to possible parasitic assemblage affecting egret population and other animal populations in their environment.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102972"},"PeriodicalIF":1.5,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142293114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metazoan parasite fauna of grey mullet (Mugilidae) from the coastal waters of Vietnam","authors":"Evgenija Dmitrieva ,&nbsp;Violetta Yurakhno ,&nbsp;Vo Thi Ha ,&nbsp;Elina Chelebieva ,&nbsp;Ekaterina Vodiasova","doi":"10.1016/j.parint.2024.102975","DOIUrl":"10.1016/j.parint.2024.102975","url":null,"abstract":"<div><div>A total of 201 fishes of the family Mugilidae caught off central Vietnam (Nha Trang Bay) were examined for parasites. Eight species of Mugilidae were identified based on cytb and 16S rRNA sequences. Protozoa were not revealed. The metazoan parasites belong to six higher taxa. Myxozoa Grassé, 1970 is represented by six genera, three of which were first found in grey mullets off Vietnam. The specimens of Monogenea Van Beneden, 1858 belong to two genera: <em>Ligophorus</em> Euzet et Suriano, 1977 and <em>Metamicrocotyla</em> Yamaguti, 1953. Twelve species of the former were recorded for the first time both in the coastal waters of Vietnam and in the East Sea. Trematoda Rudolphi, 1808 is represented by the members of the four families, of which only three species, <em>Haplosplanchnus pachysoma</em> (Eysenhardt, 1892), <em>Pseudohaploporus planilizum</em> Atopkin, Besprozvannykh, Ha, Nguyen, Nguyen &amp; Chalenko, 2019 and <em>Spiritestis arabii</em> Nagaty, 1948, were identified. The latter was first recorded in the East Sea. Acanthocephala Rudolphi, 1808 specimens belong to the species <em>Neoechinorhynchus dimorphospinus</em> Amin &amp; Sey, 1996. Crustacea Brünnich, 1772 are represented by five families, of which only the copepod <em>Lernanthropsis mugilii</em> (Shishido, 1898) and the isopod <em>Nerocila orbignyi</em> (Guérin, 1832) were identified. Hirudinea Savigny, 1822 were not determined to genus and species level. A total of 25 species of parasites were found in the Mugilidae fishes examined in Nha Trang Bay. In general, 96 species of parasites are currently documented in these fishes in the East Sea, 55 of which occur off Vietnam. As a result of this study, carried out off central Vietnam, 16 parasite species were recorded in grey mullet for the first time in Vietnamese coastal waters and 15 for the first time in the East Sea. Thus, extending the geographical range of the studies may result in new records of parasites in these fishes.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102975"},"PeriodicalIF":1.5,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142308277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new species of Bivesiculoides (Digenea: Bivesiculidae) infecting atherinid fishes of the Great Barrier Reef, Queensland, Australia","authors":"Clarisse Louvard ,&nbsp;Scott C. Cutmore ,&nbsp;Thomas H. Cribb","doi":"10.1016/j.parint.2024.102974","DOIUrl":"10.1016/j.parint.2024.102974","url":null,"abstract":"<div><div>We describe a new species of Bivesiculidae, <em>Bivesiculoides maiae</em> n. sp., from <em>Hypoatherina tropicalis</em> (Whitley) (Atherinidae) collected from off Heron Island (southern Great Barrier Reef, Queensland, Australia). <em>Bivesiculoides maiae</em> n. sp. is morphologically consistent with <em>Bivesiculoides</em> Yamaguti, 1938 in the entirely pre-testicular position of its uterus, and the possession of caeca and vitelline fields that extend posteriorly to level with the anterior extremity of the testis. The new species is morphologically distinct from the six known <em>Bivesiculoides</em> species in body size and shape, and shape of the pharynx and testis. <em>Bivesiculoides maiae</em> n. sp. is genetically distinct from the only other sequenced <em>Bivesiculoides</em> species, <em>Bivesiculoides fusiformis</em> Cribb, Bray &amp; Barker, 1994, with which it occurs sympatrically at Heron Island. A review of related species allows two systematic recombinations. In view of the pre-testicular position of its uterus, we recombine <em>Bivesicula hepsetiae</em> Manter, 1947 as <em>Bivesiculoides hepsetiae</em> (Manter, 1947) n. comb. In view of its obtriangular body shape, round pharynx, strongly elongated testis, and the position of its ovary opposite the testis, we recombine <em>Bivesiculoides triangularis</em> Machida &amp; Kuramochi, 2000 as <em>Treptodemoides triangularis</em> (Machida &amp; Kuramochi, 2000) n. comb. Host-specificity of species of <em>Bivesiculoides</em> and their geographic distributions are discussed.</div></div>","PeriodicalId":19983,"journal":{"name":"Parasitology International","volume":"104 ","pages":"Article 102974"},"PeriodicalIF":1.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142293112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}