Journal of Helminthology最新文献_第2页

Fasciolosis in Algerian livestock: Epidemiological trends and economic consequences. 阿尔及利亚牲畜的片形虫病：流行病学趋势和经济后果。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-11 DOI: 10.1017/S0022149X25100503

C Fennouh, D Mokrani, H Dahmani, O Salhi, I Ouchetati, M Nabi, K Aouina, I Chettih, N Ouchene, N A Khelifi Touhami

{"title":"Fasciolosis in Algerian livestock: Epidemiological trends and economic consequences.","authors":"C Fennouh, D Mokrani, H Dahmani, O Salhi, I Ouchetati, M Nabi, K Aouina, I Chettih, N Ouchene, N A Khelifi Touhami","doi":"10.1017/S0022149X25100503","DOIUrl":"https://doi.org/10.1017/S0022149X25100503","url":null,"abstract":"Fasciolosis, a parasitic disease of ruminants, poses significant economic and animal-health challenges in Algeria. This study aimed to assess spatial, temporal, and species-specific patterns of fasciolosis prevalence across diverse agro-climatic zones and to estimate associated economic losses. Between 2013 and 2023, eight wilayas El-Tarf, Skikda, Jijel (Region I), Blida, Mila (Region II), and M'Sila, Medea, Laghouat (Region III) were surveyed. Systematic postmortem inspections of 1,569,392 animals (349,176 cattle; 982,669 sheep; 235,639 goats; 1,882 camels; 26 horses) were performed by qualified veterinarians, with liver and bile-duct examination for Fasciola. Data on region, species, year, and season were analyzed in R 4.4.0 using ANOVA, Kruskal-Wallis, Tukey's post hoc tests, and principal component analysis (PCA). Economic losses were calculated from condemned liver weights in Blida, Laghouat, and Jijel, converted to USD. PCA distinguished three regional prevalence profiles, with PC1 (77.7% variance) separating overall prevalence levels. Region I exhibited the highest mean prevalence (2.47%), peaking at 3.54% in 2018 - significantly greater than Region II (1.39%) and Region III (1.96%) (p < 0.01). Cattle showed the greatest infection rate (mean 4.14%), significantly higher than sheep (1.32%; p < 0.001) and goats (0.25%; p < 0.001), while horses and camels remained uninfected. Seasonal analysis revealed highest prevalence in autumn and winter (≈2.1%) versus spring (≈1.5%). Economic losses totaled USD 10.6 million in Blida, USD 1.0 million in Laghouat, and USD 142.2 million in Jijel over the study period. Targeted control strategies, adapted to regional and seasonal risk patterns, are essential. Future work should investigate environmental and management factors driving regional differences and evaluate cost-effective interventions to mitigate fasciolosis impact in Algerian livestock.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e77"},"PeriodicalIF":1.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new species of Kalicephalus (Nematoda: Diaphanocephalidae), a parasite of Bothrops atrox (Serpentes: Viperidae) from the Brazilian Amazon. 文章标题巴西亚马逊河流域细尾蚤（蛇纲：蝰蛇科）的寄生细尾蚤一新种（线虫纲：细尾蚤科）。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-11 DOI: 10.1017/S0022149X25100436

F G Haick, L F S Tavares-Costa, G L Rebêlo, J K S Neves, A J S Félix, M I Müller, L F F Trindade, C E Costa-Campos, G F Maschio, F T V Melo

{"title":"A new species of Kalicephalus (Nematoda: Diaphanocephalidae), a parasite of Bothrops atrox (Serpentes: Viperidae) from the Brazilian Amazon.","authors":"F G Haick, L F S Tavares-Costa, G L Rebêlo, J K S Neves, A J S Félix, M I Müller, L F F Trindade, C E Costa-Campos, G F Maschio, F T V Melo","doi":"10.1017/S0022149X25100436","DOIUrl":"https://doi.org/10.1017/S0022149X25100436","url":null,"abstract":"Kalicephalus (Molin, 1861) comprises 33 species of gastrointestinal snake and lizard parasites with a cosmopolitan distribution, with seven taxa occurring in the Neotropical realm. In the present study, we describe Kalicephalus atroxi n. sp., found parasitising the snake Bothrops atrox, from the Eastern Amazon in the State of Amapá, North of Brazil. We used an integrative approach that included light microscopy, scanning electron microscopy, and sequencing of the internal transcribed spacer 1 (ITS1) region to describe Kalicephalus atroxi n. sp. The new species has a buccal capsule characteristic of the genus, a slight cuticular inflation in the cephalic region. The females have an amphidelphic reproductive system, a vulva with prominent lips, and a long tail, tapering posteriorly. The males have long and alate spicules, and the copulatory bursa is lobed with dorsal rays with distinct morphology compared to their congeners. Molecular analyses and phylogenetic reconstructions cluster the new species into a well-supported clade with K. costatus costatus, from Chironius fuscus, from the same locality in northern Brazil. Kalicephalus atroxi n. sp. is the eighth species of the genus in the Neotropics, the seventh in Brazil, the second described parasitising B. atrox in Brazil, and the first species of snake nematode described in the State of Amapá.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e76"},"PeriodicalIF":1.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterizing the microbiome of Dujardinascaris helicina (Nematoda: Ascarididae) isolated from wild American crocodiles in Belize. 从伯利兹美洲野生鳄鱼中分离出的螺旋体线虫（线虫：蛔虫科）的微生物组特征。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-11 DOI: 10.1017/S0022149X25100369

C Griffin, D Dinh, D Singletary, M Tellez, H Sung

引用次数: 0

Morphological and molecular characterisation of Neothada olearum sp. nov. (Nematoda: Tylenchidae) from Spain. 西班牙褐毛线虫（nethada olearum sp. 11 .）的形态和分子特征。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-11 DOI: 10.1017/S0022149X25100497

R Salazar-García, J E Palomares-Rius, C Cantalapiedra-Navarrete, G Liébanas, P Castillo, A Archidona-Yuste

{"title":"Morphological and molecular characterisation of Neothada olearum sp. nov. (Nematoda: Tylenchidae) from Spain.","authors":"R Salazar-García, J E Palomares-Rius, C Cantalapiedra-Navarrete, G Liébanas, P Castillo, A Archidona-Yuste","doi":"10.1017/S0022149X25100497","DOIUrl":"https://doi.org/10.1017/S0022149X25100497","url":null,"abstract":"During nematode surveys conducted to investigate the biodiversity of plant-parasitic nematodes in Mediterranean olive groves with different management strategies (organic and conventional), a nematode population of the genus Neothada was detected in southern Spain. Application of integrative taxonomical approaches clearly demonstrated that it is a new species described herein as Neothada olearum sp. nov., also representing the first report of the genus in Spain. The new species is amphimictic, characterised by a short body (563-774 μm); cuticle widely annulated (2.5-3.0 μm); total number of body annuli 214-226; 16 longitudinal ridges giving a tessellate body surface; stylet without distinct basal knobs (9.0-11.0 μm); and tail elongate-conoid, with tip bluntly rounded. The results of molecular analysis of D2-D3 28S rRNA, ITS rRNA, partial 18S rRNA, and cytochrome oxidase c subunit 1 (COI) gene sequences support for the new species status and clearly separated from N. major and other species within Neothada. Phylogenetic analyses of ribosomal and mitochondrial markers of this study suggested that Neothada is a monophyletic genus, clearly separated from Thada.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e74"},"PeriodicalIF":1.3,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Are we missing the boat? Time for using multiple independent loci in trematode diversity studies. 我们错过机会了吗？在吸虫多样性研究中使用多个独立基因座的时间。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-10 DOI: 10.1017/S0022149X25100333

I Blasco-Costa

{"title":"Are we missing the boat? Time for using multiple independent loci in trematode diversity studies.","authors":"I Blasco-Costa","doi":"10.1017/S0022149X25100333","DOIUrl":"https://doi.org/10.1017/S0022149X25100333","url":null,"abstract":"Over the years, the number of parasitic helminth species discoveries has not ceased to increase and the popularisation of the use of molecular methods has contributed greatly to sustain the growth in knowledge. However, molecular approaches evolved rapidly in the last 20 years. I argue that the research community working on parasitic helminths has lagged behind in the application of molecular methods that examine multiple loci to study species diversity. In this paper, I review the recent historical trends in the molecular markers used to study trematode diversity. Except for the emergence of pioneer mitogenome studies, the use of markers has not changed in the past 10 years. It is still restricted to single locus or a combination of two, rarely three, mitochondrial and ribosomal loci. I identify past and current molecular approaches providing data on multiple loci across the genome which have found resistance in the trematode and the helminth parasitology fields over the last four decades. I discuss how the knowledge gained from the analysis of genome-wide markers would benefit research on parasite diversity today, in particular for cases of species complexes, cryptic (or nearly cryptic) species, recently diverged species, and species with a complex taxonomic history, or a history of suspected mitonuclear discordance as well as for taxa with wide geographical distributions or species with disjoint distributions. Furthermore, I argue that both, studies with classical markers and reduced-representation genome studies providing genome-wide markers should not walk different paths but feedback on each other to advance the field forward. I examine some challenges and make recommendations for obtaining high-throughput molecular data of parasitic helminths.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e71"},"PeriodicalIF":1.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monorchiids of silverbiddies (Gerreidae) from Queensland, Australia, including two new genera and species. 澳大利亚昆士兰银蛛科单兰花属，包括两新属和新种。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-10 DOI: 10.1017/S0022149X25100321

N Q-X Wee, T H Cribb, T L Miller, S C Cutmore

{"title":"Monorchiids of silverbiddies (Gerreidae) from Queensland, Australia, including two new genera and species.","authors":"N Q-X Wee, T H Cribb, T L Miller, S C Cutmore","doi":"10.1017/S0022149X25100321","DOIUrl":"10.1017/S0022149X25100321","url":null,"abstract":"Five species of monorchiids are known from fishes of the family Gerreidae, of which one is from Australian waters. Here, we report it and two new monorchiids from three species of Gerres Quoy & Gaimard, 1824 from off Lizard Island, northern Great Barrier Reef, and Moreton Bay in south-eastern Queensland: Gerres oyena (Forsskål), Gerres oblongus Cuvier and Gerres subfasciatus Cuvier. One of the new species, found only in G. oblongus at Lizard Island, conforms most closely to the concept of Proctotrema Odhner, 1911. However, it differs from species of Proctotrema in oral sucker shape and location of intestinal bifurcation and termination. It is phylogenetically distinct from two sequenced species of Proctotrema; thus, we propose Obscuromonorchis ranae n. g., n. sp. The second new species infects all three gerreids, occurs at both Lizard Island and Moreton Bay, and is morphologically most similar to the concept of Monorchicestrahelmins Yamaguti, 1971. However, the combination of the length of the caeca, size of the testis and post-testicular region, and the form of spination in the genital atrium presents a clear genus-level distinction that warrants proposal of a new genus. There are no molecular data for the three recognised species of Monorchicestrahelmins. We propose Argenticola shuyinae n. g., n. sp. for this species. New specimens of Gerricola queenslandensis Wee, Cutmore & Cribb, 2021 were collected from off Lizard Island and Moreton Bay. The three species form a well-supported clade but with internal branch lengths and topology consistent with genus-level differentiation.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e70"},"PeriodicalIF":1.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A rare discovery: a new Loimos species (Monocotylidae: Loimoinae) from the gills of Rhizoprionodon taylori (Carcharhinidae) off the southern Great Barrier Reef, Australia. 一个罕见的发现：一个新的Loimos物种（单子叶科：Loimoinae）来自澳大利亚大堡礁南部的Rhizoprionodon taylori （Carcharhinidae）的鳃。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-10 DOI: 10.1017/S0022149X25100370

D B Vaughan, A Trujillo-González, N Flint, L Chisholm

{"title":"A rare discovery: a new Loimos species (Monocotylidae: Loimoinae) from the gills of Rhizoprionodon taylori (Carcharhinidae) off the southern Great Barrier Reef, Australia.","authors":"D B Vaughan, A Trujillo-González, N Flint, L Chisholm","doi":"10.1017/S0022149X25100370","DOIUrl":"https://doi.org/10.1017/S0022149X25100370","url":null,"abstract":"A new species of Loimos MacCallum, 1917 is described more than half a century after the last species was described in 1972. The new species was collected from the gills of Rhizoprionodon taylori (Ogilby, 1915) off the Central Queensland coast, Australia, and is the first Loimos species and the first representative of the Loimoinae Price, 1936 known from Oceania. A detailed morphological description and 28S rDNA molecular sequences are provided for the new species. In the molecular phylogeny based on available 28S rDNA sequences for relevant Monocotylidae, the new species grouped together with the only other Loimos sequence available in GenBank, that of the nonugen Loimos sp. from China (OM060238), sister to Loimosina wilsoni Manter, 1944. The estimated genetic divergence between the new species and the nonugen Loimos sp. sequence is low, between 0.0452 and 0.0737, suggesting that the nonugen sequence may represent the new species, or a very closely related congener. Host identity was confirmed by comparing COI sequences with those of known sharks in GenBank. We also provide the first 12S and 16S molecular sequences for this shark species.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e69"},"PeriodicalIF":1.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphology and molecular phylogeny of two bat trematodes from the taxonomically problematic genus Paralecithodendrium (Lecithodendriidae, Digenea). 分类问题属蝙蝠吸虫的形态和分子系统发育。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-10 DOI: 10.1017/S0022149X24001019

N Kirillova, A Kirillov, E Gorodilova, S Shchenkov

引用次数: 0

Causative agents of black spot disease in Middendorff's eelpout, Hadropareia middendorffii (Teleostei: Zoarcidae), from the Sea of Okhotsk. 鄂霍次克海米德尔多夫鳗黑斑病病原研究。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-08 DOI: 10.1017/S0022149X25100461

E Skorobrekhova

{"title":"Causative agents of black spot disease in Middendorff's eelpout, Hadropareia middendorffii (Teleostei: Zoarcidae), from the Sea of Okhotsk.","authors":"E Skorobrekhova","doi":"10.1017/S0022149X25100461","DOIUrl":"https://doi.org/10.1017/S0022149X25100461","url":null,"abstract":"Data on the infection of Middendorff's eelpout, Hadropareia middendorffii, by metacercariae of the trematodes Cryptocotyle lingua Creplin, 1825 and Liliatrema skrjabini Gubanov, 1953, which are causative agents of black spot disease, is provided here for the first time for Taui Bay, Sea of Okhotsk. The prevalence of infection of fish by larvae of C. lingua reached 79%, while the intensity of infection varied from one to 278 individuals (with an average of 53). The prevalence of infection by L. skrjabini was lower (40%), with an intensity from one to 22 larvae (on average, eight). Metacercariae of both trematode species were surrounded by two envelopes: an outer, connective tissue capsule formed by the host's cells, and an inner cyst formed by the parasite. The examined metacercariae were found in all regions of the fish's body (head, trunk, and fins), with approximately equal numbers of individuals of both species found in tissues of the head and trunk regions. Metacercariae of C. lingua were localised in the fishes' muscles, not only immediately under the skin but also in deeper layers. The capsules formed around metacercariae of both trematode species were dominated by fibroblasts and collagen fibres and did not show pronounced signs of inflammation. Studying the distribution of black spot disease and its effects on fish is crucial for understanding disease patterns in relation to fish population dynamics. It may also inform the development of effective anthelmintic treatments for use in aquaculture farms.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e68"},"PeriodicalIF":1.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144584124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of the Progamotaenia macropodis (Cestoda: Anoplocephalidae) species complex from Australian macropodid marsupials, with description of P. mollicula sp. nov. 澳大利亚大足类有袋动物大足原蝇种复合体的研究进展（附P. mollicula sp. nov的描述）。

IF 1.3 3区生物学

Journal of Helminthology Pub Date : 2025-07-07 DOI: 10.1017/S0022149X2510031X

I Beveridge, C Gauci, A Jabbar

{"title":"Review of the Progamotaenia macropodis (Cestoda: Anoplocephalidae) species complex from Australian macropodid marsupials, with description of P. mollicula sp. nov.","authors":"I Beveridge, C Gauci, A Jabbar","doi":"10.1017/S0022149X2510031X","DOIUrl":"https://doi.org/10.1017/S0022149X2510031X","url":null,"abstract":"Genetic evidence indicates that Progamotaenia macropodis Beveridge, 1976 (Cestoda: Anoplocephalidae), found in various macropodid host species, is a complex of cryptic species. However, the genetic data are incomplete, and no morphological re-appraisal of the species has been undertaken since its original description. Here, additional mitochondrial cytochrome c oxidase I sequence data have been added from the type host, Macropus giganteus, as well as other host species, and a morphological study of all available material undertaken. A new species, Progamotaenia mollicula sp. nov., is erected for specimens from the tammar wallaby, Notamacropus eugenii, which are smaller, and the testes in pre-mature and mature proglottids occur invariably in two lateral groups. Specimens from the remaining host species, Macropus fuliginosus, Notamacropus parryi, N. rufogriseus, Osphranter robustus, and Wallabia bicolor are highly variable with obvious differences in length and proglottid shape, but with no reliable internal morphological characters for separating the various genotypes. The study was limited by incomplete molecular data (N. rufogriseus) and the poor quality of some of the preserved material.","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"99 ","pages":"e65"},"PeriodicalIF":1.3,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144575536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0