Folia Parasitologica最新文献

Characterisation of eggs and larvae of Lamellodiscus erythrini (Monogenea: Diplectanidae) using light and scanning electron microscopy. 用光学显微镜和扫描电子显微镜对赤斑板虱卵和幼虫的研究。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-05-15 DOI: 10.14411/fp.2025.014

Judith Revault, Marie-Line Escande, Valentin Logeux, Yves Desdevises, Elodie Magnanou

{"title":"Characterisation of eggs and larvae of Lamellodiscus erythrini (Monogenea: Diplectanidae) using light and scanning electron microscopy.","authors":"Judith Revault, Marie-Line Escande, Valentin Logeux, Yves Desdevises, Elodie Magnanou","doi":"10.14411/fp.2025.014","DOIUrl":"https://doi.org/10.14411/fp.2025.014","url":null,"abstract":"While the identification of adult monogeneans primarily relies on morphological criteria, the morphology of a number of monogenean larvae (oncomiracidia) is to this day scarcely described. Yet, oncomiracidium plays a crucial role in the life cycle of the parasite, being responsible for the detection and localisation of its host, as well as for its attachment to this host. Few studies investigated the external morphological structures related to these functions, especially in Monopisthocotylea. The present study focuses on the early life stages (egg and oncomiracidium) of Lamellodiscus erythrini Euzet et Oliver, 1967, which are accurately described for the first time by light and scanning electron microscopy. Eggs of L. erythrini are smooth, tetrahedral and extended by a long polar filament. Freshly laid, the egg is brown, opaque, impermeable and becomes transparent as it matures, revealing the larva and its eye spots. When the egg matures, the egg casing exhibits functional weak points all around the operculum through which the larva emerges. The larva of L. erythrini is elongated, cylindrical and has a highly developed ciliation covering three areas: an anterior zone, a pleural zone, and a posterior cone. The ciliated cells are contiguous and are organised in a structured mosaic of spherical droplets, each cilium inserted into one. The larval tegument presents microvilli as well as 9 pairs of dorsal sensilla. The haptor is a closed structure consisting of 14 sclerotised hooklets, 12 arranged in a circle, and one pair positioned at the centre of the haptor. The possible link between these morphological structures and larval behaviour is discussed.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113106","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}

引用次数: 0

Fecundity of the zoonotic nematode Anisakis pegreffii cultivated in vitro. 人畜共患线虫pegreffi异尖线虫体外培养的生殖力。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-05-14 DOI: 10.14411/fp.2025.013

Harriet Nketiah Birikorang, Samantha Moratal Martinez, Jerko Hrabar, Ivona Mladineo

{"title":"Fecundity of the zoonotic nematode Anisakis pegreffii cultivated in vitro.","authors":"Harriet Nketiah Birikorang, Samantha Moratal Martinez, Jerko Hrabar, Ivona Mladineo","doi":"10.14411/fp.2025.013","DOIUrl":"https://doi.org/10.14411/fp.2025.013","url":null,"abstract":"The zoonotic marine nematodes of the genus Anisakis Dujardin, 1845 are the causative agents of anisakiasis, a parasitosis that has been increasingly reported in Europe over the past decade due to the more frequent consumption of lightly processed or raw seafood. While the life cycle in the marine environment is relatively well-known, an in vitro life cycle has recently been established with the goal to serve as a model for a better understanding of the functional biology of the nematode and consequent devising of strategies for its detection and inactivation. However, the reproductive capacity of the nematode has not been investigated so far, although it is an important parameter for epidemiological modelling or risk assessment studies. To measure the fecundity of Anisakis pegreffii Campana-Rouget et Biocca, 1955, type I larvae were obtained from naturally infected blue whiting Micromesistius poutassou (Risso) from the Adriatic Sea (Croatia) and cultured to the adult stage in Schneider's insect Drosophila medium supplemented with 10% chicken serum (n = 30 in triplicate). Larvae reached stage 4 (L4) by day 4 post-incubation (dpi), followed by molting to the stage 5 (L5) after 15 days and transition to the adult stage, characterised by production and expulsion of eggs on day 17 dpi. The fecundity of the adults was quantified by the daily number of eggs expelled per female, as well as their hatchability. Eggs were detected from 17 to 133 dpi but started hatching only from 44 dpi. Over the next 51 days, the eggs typically hatched into L2 larvae within 5-7 days. Average fecundity peaked at 100 dpi with 44,125 eggs/day/female and a sex ratio of 1 : 2 to 1 : 3. Cumulative mortality of cultured animals reached 60, 50 and 53% for the triplicates at 133 dpi, whereupon the experiment was terminated as only unfertilised eggs were produced.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113107","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}

引用次数: 0

Parasite communities of the gafftopsail pompano Trachinotus rhodopus (Carangiformes: Carangidae): examining the parasite species richness and diversity over time. 龙形目：龙形目：龙形目：龙形目寄生虫群落的丰富度和多样性。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-04-07 DOI: 10.14411/fp.2025.012

Shirley S Salas-Villalobos, Juan Violante-Gonzalez, Edgar F Mendoza-Franco, Scott Monks, Agustin A Rojas-Herrera, Pedro Flores-Rodriguez, Jose Luis Rosas-Acevedo, Yesenia Gallegos-Navarro, Apolinar Santamaria-Miranda

{"title":"Parasite communities of the gafftopsail pompano Trachinotus rhodopus (Carangiformes: Carangidae): examining the parasite species richness and diversity over time.","authors":"Shirley S Salas-Villalobos, Juan Violante-Gonzalez, Edgar F Mendoza-Franco, Scott Monks, Agustin A Rojas-Herrera, Pedro Flores-Rodriguez, Jose Luis Rosas-Acevedo, Yesenia Gallegos-Navarro, Apolinar Santamaria-Miranda","doi":"10.14411/fp.2025.012","DOIUrl":"https://doi.org/10.14411/fp.2025.012","url":null,"abstract":"In total 949 specimens of Trachinotus rhodopus (Gill) were collected over a 11-year period (from June 2013 to February 2024) from Acapulco Bay, Mexico. Parasite communities in T. rhodopus were quantified and analysed to explore two hypotheses related to their parasite species richness and diversity associated with the bentho-demersal and pelagic habits, and effects of the climatic fluctuations. Thirty-two metazoan parasite taxa/species were identified: three species of 'Monogenea', 14 Digenea, one Aspidogastrea, one Acanthocephala, two Cestoda, three Nematoda and eight Crustacea. The digeneans and copepods were the best represented groups. The component parasite communities were characterised by the numerical dominance of the acanthocephalan Rhadinorhynchus sp. Species richness (15-24 species) was similar to that reported for other species of carangid fish, but the richness of the digeneans was significantly higher. The parasite communities of T. rhodopus exhibited high variability in species composition, suggesting that each species of parasite may respond differently to environmental changes. However, the species richness and diversity were fairly stable over time. Climatic events of La Niña and El Niño probably generated notable changes in the structure of local food webs, thus indirectly influencing the transmission rates of several endoparasite species.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144029858","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}

引用次数: 0

Variability in Trypanosoma cruzi susceptibility among species of kissing bugs (Hemiptera: Reduviidae: Triatominae) in Mexico. 墨西哥吻蝽对克氏锥虫易感性的变异（半翅目：红蝇科：锥蝽科）。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-04-01 DOI: 10.14411/fp.2025.011

Alberto Antonio-Campos, Ernesto Ramirez-Moreno, Victor Sanchez-Cordero, Nancy Rivas, Ricardo Alejandre-Aguilar

{"title":"Variability in Trypanosoma cruzi susceptibility among species of kissing bugs (Hemiptera: Reduviidae: Triatominae) in Mexico.","authors":"Alberto Antonio-Campos, Ernesto Ramirez-Moreno, Victor Sanchez-Cordero, Nancy Rivas, Ricardo Alejandre-Aguilar","doi":"10.14411/fp.2025.011","DOIUrl":"10.14411/fp.2025.011","url":null,"abstract":"Chagas disease, caused by the kinetoplastid Trypanosoma cruzi (Chagas, 1909), and transmitted by triatomine bugs, poses a significant public health challenge. Variability in the susceptibility of different triatomine species to T. cruzi infection can profoundly influence disease transmission dynamics and control measures. In this study, we assessed the susceptibility to T. cruzi infection in the first and third nymphal stages across eight triatomine species to T. cruzi infection using experimental inoculation with the NINOA strain and optical microscopy. The evaluated species were Dipetalogaster maximus (Uhler), Triatoma bassolsae (Alejandre-Aguilar, Nogueda-Torres, Cortéz-Jiménez, Jurberg, Galvão, Carcaballo), T. infestans (Klug), T. lecticularia (Stål), T. mexicana (Herrich-Schaeffer), T. pallidipennis (Stål), T. phyllosoma (Burmeister) and T. picturata (Usinger). The results indicated that T. bassolsae exhibited the highest susceptibility to infection, followed by T. pallidipennis and D. maximus. Our analysis also revealed that T. cruzi (NINOA) infection was significantly associated with triatomine species rather than nymphal stage (p < 0.0001), with substantial variability observed in susceptibility among species (p < 0.001). We ranked triatomine species susceptibility to T. cruzi infection as follows: T. bassolsae > D. maximus = T. pallidipennis = T. picturata = T. mexicana > T. phyllosoma = T. lecticularia = T. infestans. These findings enhance our understanding of T. cruzi transmission dynamics and offer valuable insights for the development of effective control strategies against this neglected tropical disease.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143797214","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}

引用次数: 0

Global hotspots and academic trends of vector-borne diseases in the order Diptera (Arthropoda: Insecta): a bibliometric visualisation. 双翅目（节肢动物目：昆虫目）媒介传播疾病的全球热点和学术趋势：文献计量可视化。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-03-19 DOI: 10.14411/fp.2025.010

Yijia Xu, Yuni Wang, Mingyu Li, Yajun Lu

{"title":"Global hotspots and academic trends of vector-borne diseases in the order Diptera (Arthropoda: Insecta): a bibliometric visualisation.","authors":"Yijia Xu, Yuni Wang, Mingyu Li, Yajun Lu","doi":"10.14411/fp.2025.010","DOIUrl":"10.14411/fp.2025.010","url":null,"abstract":"Blood-sucking arthropods belonging to the order Diptera, encompassing mosquitoes, sandflies, midges, blackflies, horseflies and tsetseflies serve as vectors for a myriad of pathogens, inflicting substantial harm on both human and animal health globally. The analysis and visualisation of global hotspots and trends pertaining to vector-borne diseases, stemming from these six categories of arthropods, constituted a reliable reference for further delving into the research on Diptera insect vectors. To achieve this, we mined literature information from the Web of Science Core Collection (WoSCC), encompassing all publications related to these six arthropod groups, and leveraged VOSviewer software for bibliometric analysis and visualisation. This resulted in the construction of comprehensive relationship networks encompassing keywords, countries, institutions and authors. A comprehensive analysis encompassed 41,393 research publications, segmented into 34,363 studies on mosquitoes, 1,668 on sandflies, 3,665 on midges, 241 on blackflies, 336 on horseflies and 1,120 on tsetseflies. The bibliometric analysis, coupled with visual characterisation, offered a multifaceted synthesis of the gathered data from diverse angles. The scientometric analysis quantitatively assessed and identified the contributions of keywords, countries, institutions and authors pertaining to the research of each vector. The resulting visualisation knowledge maps elucidate collaborative network relationships within the respective vector research domains. This research endeavour stems from numerous driving forces, and a comprehensive grasp of its future trajectories and research hotspots can empower scientists with historical perspectives and forward-looking insights, fostering the formulation of innovative and impactful research ideas for the years ahead.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143765612","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}

引用次数: 0

Confocal fluorescent study of the fish blood flukes: the serotonergic elements and ultrastructure of the nervous system of adult Sanguinicola plehnae (Digenea: Sanguinicolidae). 鱼血吸虫的共聚焦荧光研究：血蛉成虫神经系统的5 -羟色胺能成分和超微结构。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-03-11 DOI: 10.14411/fp.2025.009

Larisa G Poddubnaya, Nadezhda B Terenina, Natalia D Kreshсhenko

{"title":"Confocal fluorescent study of the fish blood flukes: the serotonergic elements and ultrastructure of the nervous system of adult Sanguinicola plehnae (Digenea: Sanguinicolidae).","authors":"Larisa G Poddubnaya, Nadezhda B Terenina, Natalia D Kreshсhenko","doi":"10.14411/fp.2025.009","DOIUrl":"10.14411/fp.2025.009","url":null,"abstract":"The first data on the neurochemical and ultrastructural organisation of the nervous system of the fish blood fluke, suckerless adult Sanguinicola plehnae Warren et Bullard in Warren, Poddubnaya, Zhokhov, Reyda, Choudhury et Bullard, 2023 (Digenea: Aporocotylidae) from the circulatory system of pike, Esox lucius Linnaeus are presented. Based on 5-HT-IP staining, the simple, uniformly developed orthogonal pattern of S. plehnae nervous system is revealed. The ventral and dorsal nerve cords originate from the brain lobes, but the lateral nerve cords originate from anterior nerves at the level of the large serotonergic neurons. In addition, several pairs of such large 5-HT-IP neurons (22-23.5 µm in diameter) are revealed along the ventral nerve cords. Unusual spindle-shaped 5-HT-IP perikarya (7.8-19.8 µm in diameter) are observed along each ventral and lateral nerve cords. The neuroblasts and developing neurons are seen between neurites in S. plehnae along with neuron somata scattered around neuropil periphery, evidencing the renewal of neuron somata population in adult digeneans. The morphological variability of both the orthogonal pattern and neuron somata and types of neurovesicles in adult digeneans are discussed.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143659769","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}

引用次数: 0

Timing matters: exploring emergence patterns of two species of trematode furcocercariae from their snail hosts. 时间问题：探索两种吸虫糠尾蚴从它们的蜗牛宿主中出现的模式。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-03-05 DOI: 10.14411/fp.2025.008

Petra Kundid, Camila Pantoja, Miroslava Soldanova

{"title":"Timing matters: exploring emergence patterns of two species of trematode furcocercariae from their snail hosts.","authors":"Petra Kundid, Camila Pantoja, Miroslava Soldanova","doi":"10.14411/fp.2025.008","DOIUrl":"10.14411/fp.2025.008","url":null,"abstract":"Cercariae are motile infectious larval stages of digenetic trematodes that emerge from their molluscan first intermediate host to seek the next host in their life cycle. A crucial transmission strategy of trematodes involves releasing the maximum number of cercariae at times that coincide with the presence and activity of the next hosts, thereby increasing the likelihood of successful infection and continuation of the parasite's life cycle. We investigated the cercarial emergence of two furcocercous (with forked tail) trematodes Tylodelphys clavata (von Nordmann, 1832) and unidentified species of Sanguinicola Plehn, 1905 from naturally infected Ampullaceana balthica (Linnaeus) and Radix auricularia (Linnaeus) snails under natural light and constant temperature conditions. Both trematodes, which are important fish pathogens, showed distinct daily emergence rhythms influenced by light intensity, with emergence peaking at sunset and night for T. clavata and at night for Sanguinicola sp. The daily emergence rhythms of T. clavata cercariae were consistent in both summer and autumn, indicating adaptability to natural changes in seasonal photoperiods. The interspecific differences in emergence patterns are likely related to the behavioural patterns of upstream, i.e., next in the life cycle, fish hosts. Cercarial output also varied between trematode species and seasons, likely due to combined effects of snail size, intensity of trematode infection in snails and size of cercariae rather than seasonal temperatures. The trematodes were molecularly characterised using mitochondrial (cox1) and nuclear (28S rDNA and ITS1-5.8S-ITS2) regions to confirm their identity and facilitate future studies. This study highlights the importance of light-regulated and host-synchronised cercarial emergence rhythms for increased trematode transmission success and reveals significant variation in cercarial output influenced by environmental and biological factors, contributing to a deeper understanding of trematode ecology and disease management.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598505","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}

引用次数: 0

Rhadinorhynchus villalobosi sp. n. (Acanthocephala: Rhadinorhynchidae) from the gafftopsail pompano Trachinotus rhodopus (Carangiformes: Carangidae) from the Pacific coast in Mexico. 来自墨西哥太平洋沿岸的冠状帆pompano Trachinotus rhodopus（冠状帆目：冠状帆科）的Rhadinorhynchus villalobosi（棘头纲：冠状帆科）。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-02-25 DOI: 10.14411/fp.2025.007

Gisela Martinez-Flores, Luis Garcia-Prieto, Alejandro Oceguera-Figueroa

{"title":"Rhadinorhynchus villalobosi sp. n. (Acanthocephala: Rhadinorhynchidae) from the gafftopsail pompano Trachinotus rhodopus (Carangiformes: Carangidae) from the Pacific coast in Mexico.","authors":"Gisela Martinez-Flores, Luis Garcia-Prieto, Alejandro Oceguera-Figueroa","doi":"10.14411/fp.2025.007","DOIUrl":"10.14411/fp.2025.007","url":null,"abstract":"A new species of Acanthocephala is described based on specimens found parasitising the intestine of the gafftopsail pompano Trachinotus rhodopus Gill in the State of Oaxaca, off the Pacific coast of Mexico. Rhadinorhynchus villalobosi sp. n. differs from the other 25 species of the genus known from the Pacific Ocean by a combination of morphological traits, such as the fewer number of rows of hooks along the proboscis, the distribution of spines of the trunk forming two fields, the position of genital pore, subterminal in both sexes, a shorter neck and cement glands, among others. The phylogenetic analyses based on sequences of the nuclear 18S and 28S rRNA genes, as well as the mitochondrial cox1, all agree that R. villalobosi sp. n. is part of the genus, and closely related to Rhadinorhynchus trachinoti Grano-Maldonado, Sereno-Uribe, Hernández-Payán, Pérez-Ponce de León et García-Varela, 2025, a recently described Mexican species, despite the marked morphological differences between the two and being distributed in different areas.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598487","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}

引用次数: 0

Bertiella anapolytica Baylis, 1934 (Cestoda, Anoplocephalidae) in Rattus spp.: morphology, distribution and evolutionary history. 中国家鼠，1934（蠓科，无头蝇科）：形态、分布及进化史。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-01-17 DOI: 10.14411/fp.2025.004

Voitto Haukisalmi, Alexis Ribas, Serge Morand

{"title":"Bertiella anapolytica Baylis, 1934 (Cestoda, Anoplocephalidae) in Rattus spp.: morphology, distribution and evolutionary history.","authors":"Voitto Haukisalmi, Alexis Ribas, Serge Morand","doi":"10.14411/fp.2025.004","DOIUrl":"10.14411/fp.2025.004","url":null,"abstract":"The present study describes the morphology and phylogenetic position of two specimens of Bertiella Stiles et Hassall, 1902 (Cestoda, Anoplocephalidae) from Rattus tanezumi (Temminck) (Muridae) from Đồng Tháp Province in southern Vietnam. The phylogenetic analysis was based on sequences of the large subunit ribosomal RNA gene (28S). The specimens were described and shown to be morphologically similar to Bertiella anapolytica Baylis, 1934 from Rattus spp. from Indonesia (Sumatra, type locality) and Australia, except for a few quantitative differences. The identification was confirmed by the phylogenetic analysis, which showed a strong affinity and fairly limited genetic divergence between the specimens from Vietnam and Australia. This is the first verified case of Bertiella in murid rodents from continental Eurasia. The uterine pore and associated canal present in the posterolateral corners of gravid proglottids of B. anapolytica are considered to form a true, functional structure used for egg release prior to apolysis. The phylogenetic analysis suggested that B. anapolytica has diverged as a consequence of a shift from marsupials, which probably took place east of the Wallace's line, either in Wallacea or Australasia. The presence of B. anapolytica west of the Wallace's line (Vietnam, Sumatra), where marsupials are absent, may be explained by a westward dispersal in commensal rats, possibly Rattus exulans (Peale), a species transported throughout the Pacific and South-East Asia by prehistoric people.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143411450","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}

引用次数: 0

Potentially zoonotic parasite arrives to continental France: Clinostomum complanatum (Trematoda: Digenea) infection in perch (Perca fluviatilis) from the Doubs River (Jura). 潜在的人畜共患寄生虫到达法国大陆：来自杜斯河（汝拉）的鲈鱼（河豚）感染了直纹线虫。

IF 1.5 4区医学

Folia Parasitologica Pub Date : 2025-01-17 DOI: 10.14411/fp.2025.003

Eloise C Rochat, Pierre Marle, Francoise Pozet, Isabel Blasco-Costa

{"title":"Potentially zoonotic parasite arrives to continental France: Clinostomum complanatum (Trematoda: Digenea) infection in perch (Perca fluviatilis) from the Doubs River (Jura).","authors":"Eloise C Rochat, Pierre Marle, Francoise Pozet, Isabel Blasco-Costa","doi":"10.14411/fp.2025.003","DOIUrl":"10.14411/fp.2025.003","url":null,"abstract":"Clinostomum complanatum (Rudolphi, 1814) is known as a food-borne zoonotic parasite using freshwater fish as intermediate host, although in its native distribution area in Europe, the Danube and Po basins and the northeast of Italy, no cases have been reported. This study reports a new geographic location outside the native distribution range of this parasite. We detected high infection levels of C. complanatum in wild perch (Perca fluviatilis Linnaeus) from the Doubs River in continental France. Clinostomum complanatum reached a prevalence of 97% and mean intensity of 5.8 cysts per fish in 33 fish examined, with most fish already infected by the age of two years. No correlations were observed between fish traits (standard length, weight, age and sex) and the number of parasites. The distribution of C. complanatum cysts in the fish body was not random. The tissue surrounding the opercula and branchial cavity, and muscles along the lateral line and near the pectoral, dorsal and caudal fins were the preferred sites of infection. Morphological identification was confirmed with molecular data. The French specimens shared identical mt cox1 haplotypes with specimens from Italy. The distribution of this exotic parasite in freshwaters in continental France deserves further research. Under the current French law, the parasite occurrence represents an economic loss for the local freshwater aquaculture industry, and a possible zoonotic risk for consumers if undetected, especially when raw or marinated fish is consumed. We provided a list of all reported hosts for C. complanatum from the western Palaearctic, discussed the knowledge gap regarding the zoonotic risk of C. complanatum in Europe, and highlighted the lack of policy that may increase the hazards posed by food-borne emerging parasites and their broader ecological impacts as alien species in freshwaters in Europe.","PeriodicalId":55154,"journal":{"name":"Folia Parasitologica","volume":"72 ","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143411473","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}

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