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Biswal D, Mirdha BR. Tiny trematode bobbing its head. Clin Microbiol Infect 2024; 30:619-620. [PMID: 38266709 DOI: 10.1016/j.cmi.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 12/25/2023] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Affiliation(s)
- Debasish Biswal
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Bijay R Mirdha
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India.
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2
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Atopkin DM, Semenchenko AA, Solodovnik DA, Ivashko YI. A report on the complete mitochondrial genome of the trematode Azygia robusta Odhner, 1911, its new definitive host from the Russian Far East, and unexpected phylogeny of Azygiidae within Digenea, as inferred from mitogenome sequences. J Helminthol 2023; 97:e69. [PMID: 37655787 DOI: 10.1017/s0022149x23000500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
New data on the complete mitochondrial genome of Azygia robusta (Azygiidae) were obtained by the next-generation sequencing (NGS) approach. The mitochondrial DNA (mtDNA) of A. robusta had a length of 13 857 bp and included 12 protein-coding genes, two ribosomal genes, 22 transfer RNA genes, and two non-coding regions. The nucleotide sequences of the complete mitochondrial genomes of two A. robusta specimens differed from each other by 0.12 ± 0.03%. Six of 12 protein-coding genes demonstrated intraspecific variation. The difference between the nucleotide sequences of the complete mitochondrial genomes of A. robusta and Azygia hwangtsiyui was 26.95 ± 0.35%; the interspecific variation of protein-coding genes between A. robusta and A. hwangtsiyui ranged from 20.5 ± 0.9% (cox1) to 30.7 ± 1.2% (nad5). The observed gene arrangement in the mtDNA sequence of A. robusta was identical to that of A. hwangtsiyui. Codon usage and amino acid frequencies were highly similar between A. robusta and A. hwangtsiyui. The results of phylogenetic analyses based on mtDNA protein-coding regions showed that A. robusta is closely related to A. hwangtsiyui (belonging to the same suborder, Azygiida) that formed a distinct early-diverging branch relative to all other Digenea. A preliminary morphological analysis of paratypes of the two azygiid specimens studied showed visible morphological differences between them. The specimen extracted from Sakhalin taimen (Parahucho perryi) was most similar to A. robusta. Thus, we here provide the first record of a new definitive host, P. perryi, for A. robusta and also molecular characteristics of the trematode specimens.
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Affiliation(s)
- D M Atopkin
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
- Department of Cell Biology and Genetics, Far Eastern Federal University, Vladivostok, Russia
| | - A A Semenchenko
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - D A Solodovnik
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
| | - Y I Ivashko
- Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, Russia
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3
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Chero JD, Cruces CL, Sáez G, Luque JL. Six new species of Rhamnocercus Monaco, Wood & Mizelle, 1954 (Monogenea: Diplectanidae) infecting the gills from South American sciaenid fishes. Syst Parasitol 2022; 99:571-585. [PMID: 35711031 DOI: 10.1007/s11230-022-10047-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/20/2022] [Indexed: 11/27/2022]
Abstract
A parasitological survey searching diplectanids (Monogenea: Diplecatnidae) infesting the gills of marine fishes from South America was carried out during the 2019-2020 period. The gills of four sciaenid species, 2 Cheilotrema fasciatum Tschudi, 1 smalleye croaker Nebris microps Cuvier, 2 royal highhat Pareques lanfeari (Barton), and 1 minor stardrum Stellifer minor (Tschudi), were sampled. Six new species of Rhamnocercus Monaco, Wood & Mizelle, 1954 were described: Rhamnocercus chacllae n. sp. and Rhamnocercus chaskae n. sp. from P. lanfeari, Rhamnocercus fasciatus n. sp. from C. fasciatum, Rhamnocercus microps n. sp. from N. microps, and Rhamnocercus rimaci n. sp. and Rhamnocercus tantaleani n. sp. from S. minor. Rhamnocercus chacllae n. sp. can be differentiated from its congeners by its L-shaped male copulatory organ (MCO) and by having an anteromedial slight notch at ventral bar. Rhamnocercus chaskae n. sp. differs from the other species of the genus by its long and straight MCO with bifid distal end and by having haptoral accessory spines at level of ventral bar with quadrifid distal portion. Rhamnocercus fasciatus n. sp. is characterized by possessing a straight and long MCO with truncated distal end, haptoral accessory spines at level of ventral bar with bifid distal portion, dorsal bars with a knob at lateral extremity, and a large vagina with bell-shaped. Rhamnocercus microps n. sp. differs from all congeners mainly by having a short and straight MCO with the distal end of internal tube spatulate and uncovered by external tube. Rhamnocercus rimaci n. sp. is can be distinguished from all other species of Rhamnocercus by having an almost J-shaped MCO with the distal end of external tube slight expanded and the distal end of internal tube narrow and uncovered by external tube. Rhamnocercus tantaleani n. sp. is mainly characterized by its MCO, which is tubular and straight, having the distal end of external tube bifurcated (right branch well-expanded and left branch narrow) and the distal end of internal tube enveloped by left branch of the external tube. This is the first data on the parasites of P. lanfeari, a little known, but popular fish in local markets from Peru. Rhamnocercus microps n. sp. is the first described species of Rhamnocercus in Brazil. The present finding brings to 12, the number of known species of Rhamnocercus. A key to Rhamnocercus species is provided.
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Affiliation(s)
- Jhon D Chero
- Departamento de Protozoología, Helmintología e Invertebrados afines, Museo de Historia Natural, Universidad Nacional Mayor de San Marcos, Av. Arenales 1256, Jesús María, 15072, Lima, Peru.
- Programa de Pós-Graduação em Biologia Animal da, Universidade Federal Rural do Rio de Janeiro, BR 465, Km 7, Seropédica, Rio de Janeiro, CEP, 23890-000, Brazil.
| | - Celso L Cruces
- Programa de Pós-Graduação em Biologia Animal da, Universidade Federal Rural do Rio de Janeiro, BR 465, Km 7, Seropédica, Rio de Janeiro, CEP, 23890-000, Brazil
| | - Gloria Sáez
- Laboratorio de Parasitología General y Especializada, Facultad de Ciencias Naturales y Matemática, Universidad Nacional Federico Villarreal (UNFV), El Agustino, Código postal 15007, Lima, Peru
| | - José L Luque
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, 23851-970, Brazil
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Díaz-Morales DM, Bommarito C, Vajedsamiei J, Grabner DS, Rilov G, Wahl M, Sures B. Heat sensitivity of first host and cercariae may restrict parasite transmission in a warming sea. Sci Rep 2022; 12:1174. [PMID: 35064187 PMCID: PMC8782892 DOI: 10.1038/s41598-022-05139-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 01/03/2022] [Indexed: 12/01/2022] Open
Abstract
To predict global warming impacts on parasitism, we should describe the thermal tolerance of all players in host-parasite systems. Complex life-cycle parasites such as trematodes are of particular interest since they can drive complex ecological changes. This study evaluates the net response to temperature of the infective larval stage of Himasthla elongata, a parasite inhabiting the southwestern Baltic Sea. The thermal sensitivity of (i) the infected and uninfected first intermediate host (Littorina littorea) and (ii) the cercarial emergence, survival, self-propelling, encystment, and infection capacity to the second intermediate host (Mytilus edulis sensu lato) were examined. We found that infection by the trematode rendered the gastropod more susceptible to elevated temperatures representing warm summer events in the region. At 22 °C, cercarial emergence and infectivity were at their optimum while cercarial survival was shortened, narrowing the time window for successful mussel infection. Faster out-of-host encystment occurred at increasing temperatures. After correcting the cercarial emergence and infectivity for the temperature-specific gastropod survival, we found that warming induces net adverse effects on the trematode transmission to the bivalve host. The findings suggest that gastropod and cercariae mortality, as a tradeoff for the emergence and infectivity, will hamper the possibility for trematodes to flourish in a warming ocean.
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Affiliation(s)
- Dakeishla M Díaz-Morales
- Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany.
| | - Claudia Bommarito
- Benthic and Experimental Ecology Department, GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany
| | - Jahangir Vajedsamiei
- Benthic and Experimental Ecology Department, GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany
| | - Daniel S Grabner
- Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany
| | - Gil Rilov
- Israel Oceanographic and Limnological Research, National Institute of Oceanography, P.O. Box 8030, 31080, Haifa, Israel
- Marine Biology Department, The Leon H. Charney School of Marine Sciences, University of Haifa, Mt. Carmel, 31905, Haifa, Israel
| | - Martin Wahl
- Benthic and Experimental Ecology Department, GEOMAR, Helmholtz Centre for Ocean Research, Kiel, Germany
| | - Bernd Sures
- Aquatic Ecology and Centre for Water and Environmental Research, University of Duisburg-Essen, Essen, Germany
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Lewisch E, Führer H, Shahi‐Barogh B, Harl J, El‐Matbouli M. Emergence of Discocotyle sagittata (Monogenea: Polyopisthocotylea) in rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta) in an Austrian aquarium. J Fish Dis 2021; 44:1643-1646. [PMID: 34339049 PMCID: PMC8518808 DOI: 10.1111/jfd.13470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/14/2021] [Accepted: 05/17/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Eva Lewisch
- Clinical Division of Fish MedicineUniversity of Veterinary MedicineViennaAustria
| | - Hans‐Peter Führer
- Institute of ParasitologyUniversity of Veterinary MedicineViennaAustria
| | - Bita Shahi‐Barogh
- Institute of ParasitologyUniversity of Veterinary MedicineViennaAustria
| | - Josef Harl
- Institute of PathologyUniversity of Veterinary MedicineViennaAustria
| | - Mansour El‐Matbouli
- Clinical Division of Fish MedicineUniversity of Veterinary MedicineViennaAustria
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Assis JCA, López-Hernández D, Favoretto S, Medeiros LB, Melo AL, Martins NRS, Pinto HA. Identification of the avian tracheal trematode Typhlocoelum cucumerinum (Trematoda: Cyclocoelidae) in a host-parasite-environment system: diagnosis, life cycle and molecular phylogeny. Parasitology 2021; 148:1383-1391. [PMID: 34103107 PMCID: PMC11010135 DOI: 10.1017/s0031182021000986] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/01/2021] [Accepted: 06/01/2021] [Indexed: 11/07/2022]
Abstract
Typhlocoelum cucumerinum is a tracheal parasite of birds widely distributed across the globe. Nevertheless, aspects of the biology of this cyclocoelid are still poorly understood. Herein, we report the finding of T. cucumerinum in definitive and intermediate hosts from an urban waterbody of Brazil. The parasite was initially detected during the necropsy of domestic Muscovy ducks (Cairina moschata) found dead in the locality. Coproparasitological tests in live animals revealed that 12/47 (25.53%) Muscovy ducks and 2/8 (25%) mallards (Anas platyrhynchos platyrhynchos) were infected with T. cucumerinum. Moreover, rediae and metacercariae morphologically similar to T. cucumerinum were found in 3/248 (1.33%) Biomphalaria straminea collected in the same waterbody frequented by the birds. The conspecificity between the adult and the larval stages was confirmed molecularly (100% similarity in Cox-1). Moreover, the phylogenetic position of T. cucumerinum was determined for the first time based on partial fragments of the 28S, Cox-1 and Nad-1 genes. The species grouped with other members of the subfamily Typhlocoelinae with sequences available, but the data obtained do not support the distinctiveness of the genera Typhlocoelum and Tracheophilus. Further studies involving a broader range of species can result in taxonomic rearrangements in Typhlocoelinae.
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Affiliation(s)
- Jordana C. A. Assis
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Danimar López-Hernández
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Samantha Favoretto
- Department of Veterinary Medicine, Universidade Federal de Lavras, Lavras, Brazil
| | - Lilian B. Medeiros
- Laboratório de Doenças das Aves, Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alan L. Melo
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Nelson R. S. Martins
- Laboratório de Doenças das Aves, Department of Preventive Veterinary Medicine, Veterinary School, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Hudson A. Pinto
- Laboratório de Biologia de Trematoda, Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Hayashi K, Kitayama C, Saito T, Ohari Y, Hayashi K, Kondo S, Takashima Y, Kuroki T, Shibahara T, Itagaki T. Detection and molecular characteristics of Pyelosomum cochlear (Digenea: Pronocephalidae) in the urinary bladder of the green sea turtle (Chelonia mydas) in the Northwest Pacific Ocean. Infect Genet Evol 2021; 93:104962. [PMID: 34111570 DOI: 10.1016/j.meegid.2021.104962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/20/2021] [Accepted: 06/02/2021] [Indexed: 11/17/2022]
Abstract
The genus Pyelosomum consists of parasitic flukes occurring primarily in marine turtles; Pyelosomum cochlear Looss 1899 is the only species of this genus that parasitizes the urinary bladder. In this study, we detected flukes in the urinary bladders of 20 of 88 green sea turtles (Chelonia mydas) harvested in the Ogasawara Islands, in the Northwest Pacific Ocean. We identified the flukes as P. cochlear based on detailed morphological observations and comparisons of morphometric measurements of the species reported previously. Nucleotide sequences of nuclear ribosomal 18S and 28S regions and the mitochondrial cytochrome c oxidase subunit 1 (COI) region were determined for the flukes. The 18S and 28S phylogenetic trees revealed that the species of the superfamily Pronocephaloidea, including P. cochlear, constituted a single clade, but the species of the family Pronocephalidae did not constitute a single taxon. These findings suggest that Pronocephalidae is a paraphyletic group. The COI sequences of P. cochlear exhibited high genetic diversity, suggesting that they would be useful markers to understand the genetic structure of the parasite and its evolutionary relationship with the host turtle populations. This is the first study to provide the nucleotide sequences of Pyelosomum species; these data will be available for further molecular studies of this genus and its related taxa.
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Affiliation(s)
- Kei Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Chiyo Kitayama
- Everlasting Nature of Asia (ELNA), Ogasawara Marine Center, Ogasawara, Tokyo 100-2101, Japan
| | - Taizo Saito
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yuma Ohari
- Laboratory of Parasitology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 9, Kita-ku Sapporo, Hokkaido 060-0818, Japan
| | - Kaoru Hayashi
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Satomi Kondo
- Everlasting Nature of Asia (ELNA), Ogasawara Marine Center, Ogasawara, Tokyo 100-2101, Japan
| | - Yasuhiro Takashima
- The United Graduate School of Veterinary Sciences, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Veterinary Parasitological Diseases, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Toshiro Kuroki
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Toshiyuki Shibahara
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Okayama University of Science, 1-3 Ikoinooka, Imabari 794-8555, Japan
| | - Tadashi Itagaki
- Laboratory of Veterinary Parasitology, Faculty of Agriculture, Iwate University, 3-18-8 Ueda, Morioka 020-8550, Japan.
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Marcogliese DJ, King KC, Bates KA. Effects of multiple stressors on northern leopard frogs in agricultural wetlands. Parasitology 2021; 148:827-834. [PMID: 33685539 PMCID: PMC11010203 DOI: 10.1017/s003118202100038x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 12/21/2022]
Abstract
Natural and anthropogenic stressors, including parasites and pesticides, may induce oxidative stress in animals. Measuring oxidative stress responses in sentinel species that are particularly responsive to environmental perturbations not only provides insight into host physiology but is also a useful readout of ecosystem health. Newly metamorphosed northern leopard frogs (Lithobates pipiens), a sentinel species, were collected from agricultural and non-agricultural wetlands exposed to varying concentrations of the herbicide atrazine. Significant effects of certain parasites' abundance and their interaction with atrazine exposure on frog oxidative stress were identified. Specifically, increased protein levels were detected in frogs infected with echinostome metacercariae. In addition, the nematode Oswaldocruzia sp. was significantly associated with increased thiol concentration and catalase activity. Significant parasite × atrazine interactions were observed for atrazine exposure and the abundance of Oswaldocruzia sp. on thiol, as thiol concentrations increased with parasite abundance at low atrazine localities and decreased in high atrazine wetlands. In addition, a significant interaction between the abundances of Oswaldocruzia sp. and gorgoderid trematodes on thiol concentrations was observed. These findings demonstrate that studies of oxidative stress on animals in natural ecosystems should account for the confounding effects of parasitism, particularly for amphibians in agricultural landscapes.
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Affiliation(s)
- David J. Marcogliese
- Aquatic Contaminants Research Division, Water Science and Technology Directorate, Science and Technology Branch, Environment and Climate Change Canada, St. Lawrence Centre, 105 McGill Street, 7th floor, Montreal, Quebec H2Y 2E7, Canada
- St. Andrews Biological Station, Fisheries and Oceans Canada, 125 Marine Science Drive, St. Andrews, New Brunswick E5B 0E4, Canada
| | - Kayla C. King
- Department of Biology, Concordia University, 1455 de Maisonneuve Blvd. W., Montreal, Quebec H3G 1M8, Canada
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford OX1 3SZ, UK
| | - Kieran A. Bates
- Department of Zoology, University of Oxford, 11a Mansfield Road, Oxford OX1 3SZ, UK
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Huntley JW, Scarponi D. Parasitism and host behavior in the context of a changing environment: The Holocene record of the commercially important bivalve Chamelea gallina, northern Italy. PLoS One 2021; 16:e0247790. [PMID: 33793588 PMCID: PMC8016236 DOI: 10.1371/journal.pone.0247790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/12/2021] [Indexed: 12/04/2022] Open
Abstract
Rapid warming and sea-level rise are predicted to be major driving forces in shaping coastal ecosystems and their services in the next century. Though forecasts of the multiple and complex effects of temperature and sea-level rise on ecological interactions suggest negative impacts on parasite diversity, the effect of long term climate change on parasite dynamics is complex and unresolved. Digenean trematodes are complex life cycle parasites that can induce characteristic traces on their bivalve hosts and hold potential to infer parasite host-dynamics through time and space. Previous work has demonstrated a consistent association between sea level rise and increasing prevalence of trematode traces, but a number of fundamental questions remain unanswered about this paleoecological proxy. Here we examine the relationships of host size, shape, and functional morphology with parasite prevalence and abundance, how parasites are distributed across hosts, and how all of these relationships vary through time, using the bivalve Chamelea gallina from a Holocene shallow marine succession in the Po coastal plain. Trematode prevalence increased and decreased in association with the transition from a wave-influenced estuarine system to a wave-dominated deltaic setting. Prevalence and abundance of trematode pits are associated with large host body size, reflecting ontogenetic accumulation of parasites, but temporal trends in median host size do not explain prevalence trends. Ongoing work will test the roles of temperature, salinity, and nutrient availability on trematode parasitism. Parasitized bivalves in one sample were shallower burrowers than their non-parasitized counterparts, suggesting that hosts of trematodes can be more susceptible to their predators, though the effect is ephemeral. Like in living parasite-host systems, trematode-induced malformations are strongly aggregated among hosts, wherein most host individuals harbor very few parasites while a few hosts have many. We interpret trace aggregation to support the assumption that traces are a reliable proxy for trematode parasitism in the fossil record.
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Affiliation(s)
- John Warren Huntley
- Department of Geological Sciences, University of Missouri, Columbia, Missouri, United States of America
| | - Daniele Scarponi
- Dipartimento di Scienze Biologiche, Geologiche e Ambientali, University of Bologna, Bologna, Italy
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Oliveira REMD, Rossi S, Attademo FLN, Santoro TA, Revorêdo RÂ, Farias DSDD, Lima MA, Batista JS, Silva FJDL, Gavilan SA, Oliveira MFD. Colocolic Intussusception Associated with Octangium sp. (Digenea: Microscaphidiidae) in a Green Sea Turtle Chelonia mydas. J Aquat Anim Health 2021; 33:17-23. [PMID: 33713491 DOI: 10.1002/aah.10115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/30/2020] [Indexed: 06/12/2023]
Abstract
Reports of intussusception in sea turtles are generally linked to marine debris ingestion; therefore, only a few cases of the disease are associated with parasitic infestations. The objective of this study was to describe the necropsy findings of the first reported case of colocolic intussusception in a green sea turtle Chelonia mydas, associated with the helminth Octangium sp. A juvenile female green sea turtle, which was registered and rescued by the team from the Cetaceans Project of Costa Branca, State University of Rio Grande do Norte, was examined. The animal died 1 d after being treated and was immediately submitted for necropsy. Our findings indicated that parasitic infestation by Octangium sp. in the green sea turtle caused intussusception and consequently led to the animal's death. Early diagnosis and surgical correction are fundamental for a good prognosis and, consequently, for successful rehabilitation of marine species.
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Affiliation(s)
- Radan Elvis Matias de Oliveira
- Applied Animal Morphophysiology Laboratory, Postgraduate Program in Animal Science, Federal Rural University do Semi-Árido, Mossoró, Rio Grande do Norte, 59625-900, Brazil
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
- Center of Surveys and Environmental Monitoring, Natal, Rio Grande do Norte, 59082-260, Brazil
| | - Silmara Rossi
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
| | - Fernanda Löffler Niemeyer Attademo
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Center of Surveys and Environmental Monitoring, Natal, Rio Grande do Norte, 59082-260, Brazil
| | - Thiago Almeida Santoro
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
| | - Rafael Ângelo Revorêdo
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
| | - Daniel Solon Dias de Farias
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
- Center of Surveys and Environmental Monitoring, Natal, Rio Grande do Norte, 59082-260, Brazil
| | - Mariana Almeida Lima
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
- Center of Surveys and Environmental Monitoring, Natal, Rio Grande do Norte, 59082-260, Brazil
| | - Jael Soares Batista
- Postgraduate Program in Animal Science, Federal Rural University do Semi-Árido, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | - Flávio José de Lima Silva
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Center of Surveys and Environmental Monitoring, Natal, Rio Grande do Norte, 59082-260, Brazil
| | - Simone Almeida Gavilan
- Costa Branca Cetacean Project, State University of Rio Grande do Norte, Mossoró, Rio Grande do Norte, 59610-210, Brazil
- Laboratory of Vertebrate Morphophysiology, Department of Morphology, Biosciences Centre, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, 59064-741, Brazil
- Center of Surveys and Environmental Monitoring, Natal, Rio Grande do Norte, 59082-260, Brazil
| | - Moacir Franco de Oliveira
- Applied Animal Morphophysiology Laboratory, Postgraduate Program in Animal Science, Federal Rural University do Semi-Árido, Mossoró, Rio Grande do Norte, 59625-900, Brazil
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11
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Tsuchida K, Flores V, Viozzi G, Rauque C, Urabe M. Hemiuroidean trematodes from freshwater Patagonian fishes: description of a new species, distribution and molecular phylogeny. Parasitol Res 2021; 120:1219-1232. [PMID: 33521841 DOI: 10.1007/s00436-020-06939-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 10/20/2020] [Indexed: 11/28/2022]
Abstract
A new trematode species, Derogenes lacustris Tsuchida, Flores, Viozzi, Rauque et Urabe n. sp. (Derogenidae: Derogeninae), from freshwater fishes is described using morphological and molecular approaches in Argentinean Patagonia. D. lacustris is the most common hemiuroidean species in the Limay River basin and parasitizes almost all the native and introduced Patagonian freshwater fish. This new species could be considered as the unique freshwater species in the genus Derogenes Nicoll, 1910. Another hemiuroidean species, Thometrema patagonica Szidat (Archiev Hydrobiol 51: 542-577, 1956) Lunaschi et Drago 2000 (Derogenidae: Halipeginae), is found from Percichthys trucha (Perciformes) in the Neuquén River basin. Its diagnosis and molecular data are provided by the present study. In the molecular analysis of the Patagonian hemiuroideans, T. patagonica composes a group with halipeginean species in the phylogenetic tree of 28S rDNA sequences, while D. lacustris is not included in the same group. D. lacustris also shows low intraspecific variation in COI sequences regardless of the localities or host species.
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Affiliation(s)
- Karin Tsuchida
- Division of Environmental Dynamics, Graduate School of Environmental Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga, 522-8533, Japan.
| | - Verónica Flores
- Laboratorio de Parasitología, INIBIOMA (CONICET-Univ. Nac. del Comahue), Quintral 1250, (8400), San Carlos de Bariloche, Río Negro, Argentina.
| | - Gustavo Viozzi
- Laboratorio de Parasitología, INIBIOMA (CONICET-Univ. Nac. del Comahue), Quintral 1250, (8400), San Carlos de Bariloche, Río Negro, Argentina
| | - Carlos Rauque
- Laboratorio de Parasitología, INIBIOMA (CONICET-Univ. Nac. del Comahue), Quintral 1250, (8400), San Carlos de Bariloche, Río Negro, Argentina
| | - Misako Urabe
- Department of Ecosystem Studies, School of Environmental Sciences, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga, 522-8533, Japan
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12
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Falkenberg JM, Lacerda ACF, Vieira GHC. Co-occurrence and niche overlap among gill parasites of the white mullet (Mugil curema Valenciennes, 1836) (Osteichthyes: Mugilidae) from the western Atlantic, Brazil. Parasitol Res 2021; 120:849-859. [PMID: 33481091 DOI: 10.1007/s00436-020-07015-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/08/2020] [Indexed: 11/27/2022]
Abstract
Different groups parasitize the gills of fishes, and the organisms can interact in positive, negative, or neutral ways, depending on parasitic abundance, environmental conditions, and the availability of resources. Here, we studied the distribution of ectoparasites on the gills of the mullet Mugil curema in the Cabedelo port region (Brazil), asking if (1) the gill parasites of M. curema fix on specific host gill arches and/or (2) co-occur in the same gill arches within a host individual; (3) if the abundance of one parasite taxon affects the abundance of another on the same gill arches; and (4) considering distinct major groups, if parasites present patterns of co-occurrence on hosts and gill arches different from the expected at random. We used generalized linear models, generalized linear mixed models, and models with zero inflation to define the microhabitats (arches) with the highest abundances of parasites and null models to analyze the co-occurrences of gill parasite groups. Three taxa of Monogenea (Ligophorus brasiliensis Abdallah, Azevedo & Luque, 2009, Ligophorus sp. 1 and Ligophorus sp. 2) and six species of Copepoda were recorded (Bomolochus nitidus Wilson, 1911; Caligus praetextus Bere, 1936; Ergasilus atafonensis Amado & Rocha, 1997; Ergasilus bahiensis Amado & Rocha, 1997; Ergasilus caraguatatubensis Amado & Rocha, 1997 and Ergasilus lizae Krøyer, 1863). We found that, in general, the gill parasites were more abundant/prevalent on specific arches (I and II) of the hosts, shared such preferences and co-occurred on the gill arches. The presence of one taxon influenced the occurrence of another only in the arches I and II; as a result, the infracommunities were characterized as interactive in the gills of this host species.
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Affiliation(s)
- Julia Martini Falkenberg
- Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Centro, s/n, Departamento de Meio Ambiente e Engenharia, Rio Tinto, PB, 58297-000, Brazil
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, s/n, Centro de Ciências Exatas e da Natureza. Departamento de Sistemática e Ecologia, João Pessoa, PB, 58051-900, Brazil
| | - Ana Carolina Figueiredo Lacerda
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, s/n, Centro de Ciências Exatas e da Natureza. Departamento de Sistemática e Ecologia, João Pessoa, PB, 58051-900, Brazil
| | - Gustavo Henrique Calazans Vieira
- Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Centro, s/n, Departamento de Meio Ambiente e Engenharia, Rio Tinto, PB, 58297-000, Brazil
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia), Universidade Federal da Paraíba, Cidade Universitária, s/n, Centro de Ciências Exatas e da Natureza. Departamento de Sistemática e Ecologia, João Pessoa, PB, 58051-900, Brazil
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13
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Pinacho-Pinacho CD, Calixto-Rojas M, García-Vásquez A, Guzmán-Valdivieso I, Barrios-Gutiérrez JJ, Rubio-Godoy M. Species delimitation of Gyrodactylus (Monogenea: Gyrodactylidae) infecting the southernmost cyprinids (Actinopterygii: Cyprinidae) in the New World. Parasitol Res 2021; 120:831-848. [PMID: 33409628 DOI: 10.1007/s00436-020-06987-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
The genus Gyrodactylus von Nordmann, 1832 represents one of the most diverse and widespread taxa within Monogenea, with approximately 500 species described worldwide. Thirty-three species of Gyrodactylus have been recorded in Mexico, and in the last two decades, at least 26 new species have been described mainly from freshwater fish families such as poeciliids, goodeids, profundulids, characids, and cichlids. In this study, we describe two new species of Gyrodactylus infecting freshwater cyprinids based on morphological and molecular characteristics. Gyrodactylus ticuchi n. sp. and Gyrodactylus tobala n. sp. were recovered from Notropis moralesi de Buen and N. imeldae Cortés, respectively, captured in five localities from the State of Oaxaca, Mexico. The new species differ slightly from their congeners in the morphology of the haptoral hard parts and the male copulatory organ. Sequences of the Internal Transcribed Spacers rDNA (ITS1-5.8S-ITS2), cytochrome oxidase subunit I (cox1), and the D2 + D3 domains of the large subunit (28S rDNA) were obtained from multiple specimens and analyzed using Maximum Likelihood (ML) and Bayesian Inference (BI). Phylogenetic hypotheses using ITS rDNA, cox1, and 28S rDNA genes recovered two new species of Gyrodactylus from N. moralesi and N. imeldae; we briefly discuss their phylogenetic relationship with other congeners. These gyrodactylids represent the first species described in species of Notropis from southern Mexico, the cyprinids exhibiting the southernmost distribution in the New World.
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Affiliation(s)
- Carlos Daniel Pinacho-Pinacho
- Cátedras CONACyT, Instituto de Ecología, A. C, Red de Estudios Moleculares Avanzados, Carretera antigua a Coatepec 351, El Haya, Xalapa, 91070, Veracruz, Mexico.
| | - Miguel Calixto-Rojas
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Adriana García-Vásquez
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Ismael Guzmán-Valdivieso
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Juan J Barrios-Gutiérrez
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
| | - Miguel Rubio-Godoy
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Km 2.5 Ant. Carretera a Coatepec, 91070 Xalapa, Veracruz, Mexico
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Chai JY, Jung BK, Lee KH, Ryu JY, Kim HS, Hong SJ, Htoon TT, Tin HH, Na BK, Sohn WM. Larval Gnathostomes and Zoonotic Trematode Metacercariae in Fish from a Local Market in Yangon City, Myanmar. Korean J Parasitol 2020; 58:701-707. [PMID: 33412776 PMCID: PMC7806426 DOI: 10.3347/kjp.2020.58.6.701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 10/03/2020] [Indexed: 11/23/2022]
Abstract
A survey was performed to investigate the infection status of zoonotic helminth larvae in fish from a local market of North Dagon District in Yangon City, Myanmar. A total of 486 fish in 13 species were collected 8 times from December 2015 to December 2019. All fish were transported under ice to a laboratory in Korea and examined for helminth larvae using artificial digestion method. Larval gnathostomes and metacercariae of more than 8 zoonotic trematode species, i.e., Opisthorchis viverrini, Haplorchis taichui, H. pumilio, H. yokogawai, Centrocestus spp., Stellantchasmus falcatus, Pygidiopsis cambodiensis, and Procerovum sp., were detected. Larval gnathostomes were found in 58 (16.0%) out of 362 fish of 6 species, with mean intensity of 2.8 per fish infected. Metacercariae of O. viverrini were detected in 10 (2.9%) out of 349 fish of 5 species, with mean intensity of 16.9 per fish infected. Metacercarial prevalences of 4 intestinal flukes, H. taichui, H. pumilio, H. yokogawai, and Centrocestus spp., were 16.8%, 26.0%, 12.5%, and 15.0% in the positive fish species, respectively, and mean metacercarial intensity was 63.3, 26.8, 86.2, and 8.7 per fish infected. Metacercariae of S. falcatus and P. cambodiensis were detected only from the mullet, Chelon macrolepis. Metacercariae of Procerovum sp. were found in Channa striata and Anabas testudineus. Collectively, it was confirmed that the fish were infected with gnathostome larvae and metacercariae of O. viverrini and intestinal flukes in Yangon City, Myanmar.
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Affiliation(s)
- Jong-Yil Chai
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
- Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080,
Korea
| | - Bong-Kwang Jung
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Keon Hoon Lee
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Jin-Youp Ryu
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Hyeon-Seung Kim
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649,
Korea
| | - Sung-Jong Hong
- Department of Environmental Medical Biology, Chung-Ang University College of Medicine, Seoul 06974,
Korea
| | | | | | - Byoung-Kuk Na
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727,
Korea
| | - Woon-Mok Sohn
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727,
Korea
- Corresponding author ()
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15
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da Silva BAF, Dias KGA, da Silva RJ, Yamada FH. A new species of Wallinia Pearse, 1920 (Digenea: Allocreadiidae), in Astyanax bimaculatus (Linnaeus, 1758) (Characidae) in Northeast Brazil, based on morphology and DNA sequences. Parasitol Res 2020; 120:37-44. [PMID: 33241440 DOI: 10.1007/s00436-020-06948-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 10/27/2020] [Indexed: 11/25/2022]
Abstract
Wallinia caririensis n. sp. is described from the intestine of Astyanax bimaculatus (Linnaeus, 1758) (Characidae) collected in the Batateiras River in the municipality of Crato, Ceará state, Brazil. The description was based on integrative taxonomy approach using DNA sequences from the D1-D3 domains of the 28S rDNA gene. The new species was confirmed through the phylogenetic analysis of the 28S rDNA gene, which showed that Wallinia caririensis n. sp. is a sister taxon of Wallinia brasiliensis (Dias, Müller, Almeida, Silva, Azevedo, Pérez-Ponce de León, and Abdallah, 2018, and Wallinia anindoi Hernández-Mena, Pinacho-Pinacho, García-Varela, Mendonza-Garfias, and Pérez-Ponce de León, 2019), a species which parasitizes Astyanax fasciatus (Cuvier, 1819), A. lacustris (Lucena and Soares, 2016) in Brazil, and A. aeneus (Günther, 1860) in Mexico, with genetic divergences of 2% and 3%, respectively. The new species can be distinguished morphologically from its congeners by possessing large body size (length and width) and tapered extremity in the posterior end of the body, eyespots are present at the pharynx level, and vitelline follicles reach up to the half distance between the posterior testis and the extremity of the body, by having larger testes distributed in coincident zones (i.e., contiguous) and non-operculated eggs (a conspicuous characteristic in W. brasiliensis). To date, species of this genus have already been described in freshwater fishes from Mexico, Costa Rica, Venezuela, and Southeastern Brazil. The species described in this study consists of the second species parasitizing characids in Brazil, and the first record in Northeastern Brazil. This finding fills a gap and expands the biogeographic distribution of the genus Wallinia in South America.
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Affiliation(s)
- Bruno Anderson Fernandes da Silva
- Laboratório de Ecologia Parasitária (LABEP), Departamento de Biologia, Universidade Regional do Cariri (URCA) - Campus Pimenta, Pimenta, Crato, Ceará, 63105-000, Brazil.
| | - Karina Gabriele Alves Dias
- Laboratório de Parasitologia de Animais Silvestres (LAPAS), Setor de Parasitologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Botucatu, Botucatu, São Paulo, Brazil
| | - Reinaldo José da Silva
- Laboratório de Parasitologia de Animais Silvestres (LAPAS), Setor de Parasitologia, Instituto de Biociências de Botucatu, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Campus Botucatu, Botucatu, São Paulo, Brazil
| | - Fábio Hideki Yamada
- Laboratório de Ecologia Parasitária (LABEP), Departamento de Biologia, Universidade Regional do Cariri (URCA) - Campus Pimenta, Pimenta, Crato, Ceará, 63105-000, Brazil
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16
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Montenegro D, Romero MS, González MT. Morphological and molecular characterization of larval digenean trematodes (Parvatrema: Gymnophallidae) and their pathological effects on the clam Leukoma thaca (=Protothaca thaca) (Bivalvia:Veneridae) (Molina, 1782) from northern Chile. Parasitol Int 2020; 80:102238. [PMID: 33147501 DOI: 10.1016/j.parint.2020.102238] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 09/30/2020] [Accepted: 10/08/2020] [Indexed: 11/18/2022]
Abstract
Trematodes are one of the largest taxa of mollusk parasites. The clam Leukoma thaca is an economically exploited bivalve found along the south-eastern Pacific coast of Peru and Chile. This bivalve is parasitized by various unidentified larval stages of digeneans in the mantle, gonads and digestive gland. The aims of this study were to determine and describe the different larval stages of the digeneans based on morphological characteristics, to identify them at the species level by performing molecular analyses, and to evaluate pathologies associated with the parasites of this clam. Individuals of L. thaca were collected in San Jorge Bay (23°S), Chile, between November 2018 and February 2019. Morphological description was carried out using in vivo and fixed specimens, and analyses including histological and scanning electron microscopy were performed. Individuals were also isolated for molecular analysis using nuclear ribosomal internal transcribed spacer 1 (ITS1), including partial subunit 18S rDNA (18S) and small subunit 5.8S gene (5.8S). Morphological characteristics indicated that the metacercaria larval stage belongs to the family Gymnophallidae, genus Parvatrema, which was supported by molecular analysis. Molecular results revealed that metacercaria, sporocysts and cercaria stages found in this clam belong to the same species of Parvatrema (genetic distance 0%), evidencing that this species uses L. thaca as the first and second intermediate host. Pathologies examined in the host were similar in nature to those reported in other gymnophallids in bivalves, but high prevalence of cercariae (20%) in gonads suggested an important castrator effect on the host.
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Affiliation(s)
- Diana Montenegro
- Master's program in Ecology of Aquatic Systems, University of Antofagasta, Casilla 170, Antofagasta, Chile.
| | - María Soledad Romero
- Departamento de Biología Marina, Facultad de Recursos del Mar, Universidad Católica del Norte, Coquimbo, Chile
| | - María Teresa González
- Instituto de Ciencias Naturales Alexander von Humboldt, Facultad de Recursos del Mar, University of Antofagasta, Casilla 170, Antofagasta, Chile
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17
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Cavalcante PHDO, da Silva MT, Pereira ADNS, Gentile R, Santos CP. Helminth diversity in Pimelodus blochii Valenciennes, 1840 (Osteichthyes: Pimelodidae) in two Amazon Rivers. Parasitol Res 2020; 119:4005-4015. [PMID: 33043417 PMCID: PMC7704492 DOI: 10.1007/s00436-020-06906-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/24/2020] [Indexed: 11/27/2022]
Abstract
Structure of the helminth community and analyses of helminth population parameters of Pimelodus blochii collected in the Xapuri River in comparison with those in the Acre River were evaluated. Eight adult helminth species were found parasitizing P. blochii in the Acre River: the nematodes Orientatractis moraveci, Rondonia rondoni, Philometroides acreanensis, Cucullanus (Cucculanus) pinai pinai, Procamallanus (Spirocamallanus) pimelodus, Rhadochona acuminata, and Brasilnema sp., and the trematode Dadaytrema oxycephala. For Xapuri’s fishes, nine helminth species were found: the nematodes O. moraveci, R. rondoni, C. (C.) pinai pinai, Procamallanus (Spirocamallanus) rarus, P. (S.) pimelodus, R. acuminata, Brasilnema sp., and Cystidicolidae gen. sp., and the trematode D. oxycephala. Nematode and Acanthocephala larvae were also reported. Helminth abundance, prevalence, and diversity were influenced by seasonality and locality (river). The helminth parasites from Acre’s fishes formed a subset of the helminth community of the Xapuri’s. The results indicate an influence of the environmental characteristics of the rivers on the helminth community structure and diversity. This is the first study of the parasite community of P. blochii in the Xapuri River. The paretheses of (Spirocamallanus) and (S.) should not be in italics all along the text and tables.
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Affiliation(s)
- Pedro Hercílio de Oliveira Cavalcante
- Instituto Federal do Acre, Campus Rio Branco, Rio Branco, AC, Brazil
- Programa de Pós-Graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Maralina Torres da Silva
- Instituto Federal do Acre, Campus Rio Branco, Rio Branco, AC, Brazil
- Programa de Pós-Graduação em Biodiversidade e Saúde, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | | | - Rosana Gentile
- Laboratório de Biologia e Parasitologia de Mamíferos Silvestres Reservatórios, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Cláudia Portes Santos
- Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz, Fiocruz, Av. Brasil 4365, Rio de Janeiro, RJ, 21040-360, Brazil.
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18
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Hou QH, Zhou XH, Yao GM, Li ZB, Shu M, Wang X, Luo W. [Genetic analysis of mitochondrial pcox1 and ribosomal 18S rRNA genes in Eurytrema pancreaticum isolates from goats in Huaihua City, Hunan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:380-383. [PMID: 32935512 DOI: 10.16250/j.32.1374.2020126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To investigate the genetic variation of Eurytrema pancreaticum isolated from goats in Huaihua City, Hunan Province. METHODS The partial sequence of mitochondrial cytochrome I (pcox1) and ribosomal 18S rRNA genes were amplified using a PCR assay in E. pancreaticum isolates from goats in Huaihua City, Hunan Province, and the PCR amplification products were sequenced. Then, the gene sequences were subjected to genetic variation and phylogenetic analyses. RESULTS The sequences of the pcox1 and 18S rRNA genes were 430 bp and 1 857 bp in length in 18 E. pancreaticum isolates from goats in Huaihua City, Hunan Province, and there were 14 and 35 variation sites in pcox1 and 18S rRNA gene sequences, with intra-species genetic variations of 0 to 1.4% and 0 to 0.8%, respectively. The sequences of pcox1 and 18S rRNA genes had 99.0% to 99.8% and 99.5% to 99.8% homologies with those from E. pancreaticum Chinese strain recorded in the GenBank database. Consistent phylogenetic analysis results were found based on pcox1 and 18S rRNA genes. The 18 E. pancreaticum isolates from goats in Huaihua City were clustered into a clade with the known E. pancreaticum isolates registered in GenBank, and the clade with these 18 E. pancreaticum isolates was close to the clades with Eurytrema species and far from the clades with other trematodes. CONCLUSIONS The E. pancreaticum isolates from goats have a low genetic variation in Huaihua City, Hunan Province. Mitochondrial pcox1 and ribosomal 18S rRNA genes may serve as molecular markers for the studies on the genetic variation in goat-derived E. pancreaticum.
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Affiliation(s)
- Q H Hou
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - X H Zhou
- Xinhuang County Center of Animal Husbandry and Fishery Affairs, Hunan Province, China
| | - G M Yao
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - Z B Li
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - M Shu
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - X Wang
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
| | - W Luo
- Huaihua Vocational and Technical College, Hunan Province, Huaihua 418000, China
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19
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Khoa DV, Hoa DT, Anh DN, Van NT, Dung DT, Huong LTT, Quyen LTB, Xu HX, Tran-Anh L. Fish-borne trematode metacercariae detected in fish commonly used for raw consumption in Ninh Binh Province, Vietnam. Trop Biomed 2020; 37:443-451. [PMID: 33612813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Raw or undercooked fish dishes are the major sources of human infection of fishborne trematodes (FBT) and the situation of metacercarial infection in fish greatly affect the prevalence in humans, especially those fish that are commonly used for raw consumption. To investigate the situation of infection with metacercaria of FBT in fish often used to prepare raw fish dishes by local people to assess the risk of infection to humans in Ninh Binh province, Vietnam. 345 fish belonging to five species of freshwater and one species of brackish water fish were collected from fishermen or small-scale fish dealers in Kim Son and Yen Khanh districts, Ninh Binh province between May 2017 and May 2018. Metacercaria of FBT was discovered by pepsin and hydrochloric acid digestion techniques and identified by the morphological and molecular analysis. Among examined fish, 44.06% infected with FBT metacercaria and the highest prevalence was in Cyprinus carpio (86.54%), Ctenopharyngodon idellus (78.43%) and Hypophthalmichthys molitrix (66.67%) while Konosirus punctatus - the brackish water fish - were free from infection. Three species of FBT were found; namely Haplorchis pumilio (accounting for 99.84% of collected metacercariae), Haplorchis taichui and Clonorchis sinensis. The average density was 1.06 metacercariae per gram of freshwater fish and the highest number was of C. idellus (6.38 cysts/gram) followed by Cirrhinus molitorella and C. carpio. Results of the study show the high prevalence of infection of FBT metacercariae among freshwater fish often used to prepare raw fish dishes in Ninh Binh province. These findings suggest the need for greater awareness of the risk from raw fish dishes among public health authorities and people.
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Affiliation(s)
- D V Khoa
- Phuc Yen 74 Central Hospital, Hung Vuong Ward, Phuc Yen City, Vinh Phuc Province, Vietnam
| | - D T Hoa
- Ha Noi Police Hospital, Ha Noi, Vietnam
| | - D N Anh
- Department of Parasitology, Vietnam Military Medical University (VMMU), 160 Phung Hung, Ha Dong, Ha Noi, Vietnam
| | - N T Van
- Department of Parasitology, Vietnam Military Medical University (VMMU), 160 Phung Hung, Ha Dong, Ha Noi, Vietnam
| | - D T Dung
- Department of Parasitology, National Institute of Malariology, Parasitology and Entomology (NIMPE), 34 Trung Van St., Trung Van Ward, Nam Tu Liem district, Ha Noi, Vietnam
| | - L T T Huong
- Department of Microbiology and Biology, Ha Noi University of Pharmacy, 13 Le Thanh Tong, Ha Noi, Vietnam
| | - L T B Quyen
- University of Science, National University of Ha Noi, Vietnam
| | - H X Xu
- Department of Microbiology and Pathogens, Institute of Biomedicine and Pharmacy, VMMU, Ha Noi, Vietnam
| | - L Tran-Anh
- Department of Parasitology, Vietnam Military Medical University (VMMU), 160 Phung Hung, Ha Dong, Ha Noi, Vietnam
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20
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Warshafsky ZT, Bullard SA, Vogelbein WK, Chandler EA, Lutcavage ME. Prevalence, intensity and pathology of the nasal parasite Nasicola hogansi in Atlantic bluefin tuna (Thunnus thynnus). J Fish Dis 2020; 43:327-335. [PMID: 31984516 DOI: 10.1111/jfd.13129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/05/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
Ectoparasitic flatworms of Nasicola (Monogenoidea: Capsalidae), which infect nasal epithelium of true tunas (Thunnus spp.), are not well studied, nor have their impacts on the host's olfactory organ been evaluated. Infections of Nasicola hogansi on Atlantic bluefin tuna, Thunnus thynnus, were investigated with emphasis on the relationship between infection prevalence, abundance and mean intensity with bluefin tuna size, sex, body condition and capture month, as well as histopathological effects. Commercially caught Atlantic bluefin tuna (n = 161, 185-305 cm curved fork length) from the Gulf of Maine were sampled during June through August 2009 for infections by N. hogansi. A total of 247 specimens of N. hogansi were collected, with a prevalence of 45.3%, mean abundance of 1.57 (CI: 1.21-2.03) and mean intensity of 3.45 (CI: 2.91-4.22). Neither fish sex nor landing month had a significant effect on parasite parameters. Larger and better-conditioned Atlantic bluefin tuna had a higher mean intensity of infection. Pathology associated with infection by N. hogansi included extensive necrosis, sloughing of the nasal epithelium and associated inflammation of underlying connective tissues. Further epidemiological and pathological study of this host-parasite system is warranted since impaired olfaction, if present, could adversely affect spawning and migration of this top ocean predator.
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Affiliation(s)
- Zoemma T Warshafsky
- Large Pelagics Research Center, School for the Environment, University of Massachusetts Boston, Gloucester, MA, USA
- College of William and Mary, Virginia Institute of Marine Science, Gloucester Point, VA, USA
| | - Stephen A Bullard
- Auburn University, School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn, AL, USA
| | - Wolfgang K Vogelbein
- College of William and Mary, Virginia Institute of Marine Science, Gloucester Point, VA, USA
| | - Emily A Chandler
- Large Pelagics Research Center, School for the Environment, University of Massachusetts Boston, Gloucester, MA, USA
| | - Molly E Lutcavage
- Large Pelagics Research Center, School for the Environment, University of Massachusetts Boston, Gloucester, MA, USA
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Menconi V, Manfrin C, Pastorino P, Mugetti D, Cortinovis L, Pizzul E, Pallavicini A, Prearo M. First Report of Clinostomum complanatum (Trematoda: Digenea) in European Perch ( Perca fluviatilis) from an Italian Subalpine Lake: A Risk for Public Health? Int J Environ Res Public Health 2020; 17:ijerph17041389. [PMID: 32098175 PMCID: PMC7068481 DOI: 10.3390/ijerph17041389] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 02/17/2020] [Accepted: 02/18/2020] [Indexed: 11/16/2022]
Abstract
Clinostomum complanatum, a digenean trematode of the Clinostomidae family, is a fish-borne zoonotic parasite responsible for Halzoun syndrome in humans and is transmitted through the consumption of raw or undercooked freshwater fish. Of the total of 112 specimens of European perch (Perca fluviatilis) sampled from a subalpine lake (Lake Endine) in North Italy in 2019, 21 (18.75%) tested positive for encysted metacercariae in the fillet. This study reports the first isolation of C. complanatum in P. fluviatilis and highlights the possible zoonotic risk for consumers, since P. fluviatilis is a food fish used in the traditional local cuisine.
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Affiliation(s)
- Vasco Menconi
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (V.M.); (D.M.); (M.P.)
| | - Chiara Manfrin
- Department of Life Sciences, University of Trieste, via Giorgieri 10, 34127 Trieste, Italy; (C.M.); (E.P.); (A.P.)
| | - Paolo Pastorino
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (V.M.); (D.M.); (M.P.)
- Department of Life Sciences, University of Trieste, via Giorgieri 10, 34127 Trieste, Italy; (C.M.); (E.P.); (A.P.)
- Correspondence: ; Tel.: +39-0112686295
| | - Davide Mugetti
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (V.M.); (D.M.); (M.P.)
| | | | - Elisabetta Pizzul
- Department of Life Sciences, University of Trieste, via Giorgieri 10, 34127 Trieste, Italy; (C.M.); (E.P.); (A.P.)
| | - Alberto Pallavicini
- Department of Life Sciences, University of Trieste, via Giorgieri 10, 34127 Trieste, Italy; (C.M.); (E.P.); (A.P.)
| | - Marino Prearo
- The Veterinary Medical Research Institute for Piemonte, Liguria and Valle d’Aosta, Via Bologna 148, 10154 Torino, Italy; (V.M.); (D.M.); (M.P.)
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22
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Cohen SC, Justo MCN, Gen DVS, Boeger WA. Dactylogyridae (Monogenoidea, Polyonchoinea) from the gills of Auchenipterus nuchalis (Siluriformes, Auchenipteridae) from the Tocantins River, Brazil. Parasite 2020; 27:4. [PMID: 31967542 PMCID: PMC6975207 DOI: 10.1051/parasite/2020002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/06/2020] [Indexed: 11/15/2022] Open
Abstract
Two species of Cosmetocleithrum Kritsky, Thatcher & Boeger, 1986 (both new) and two species of Demidospermus Suriano, 1983 (one new) are reported from the gills of the catfish Auchenipterus nuchalis, popularly known as "mapará", from the Tocantins River and tributaries, North Region of Brazil. Cosmetocleithrum berecae n. sp. differs from all other species presently known in the genus by the morphology of the anchors presenting an elongate shaft and short recurved point, a coiled male copulatory organ (MCO) with three rings, and an elongate slender accessory piece with a bifurcated distal end. Cosmetocleithrum nunani n. sp. differs from its congeners by the combination of the following features: (1) Ventral and dorsal anchors with moderately long curved shaft and short point; (2) Hooks with poorly developed thumb; (3) Hook pairs 5 and 6 similar to each other, but morphologically distinct from remaining hook pairs; and (4) MCO coiled, with approximately 1.5 rings. Demidospermus tocantinensis n. sp. is easily distinguished from other species of the genus by presenting an inverted-G-shaped MCO with a median knee-like expansion. Demidospermus osteomystax Tavernari, Takemoto, Lacerda & Pavanelli, 2010 is redescribed based on paratypes and specimens from the gills of A. nuchalis from the Tocantins River, a new host and locality records for this species. The monotypic Paracosmetocleithrum Acosta, Scholz, Blasco-Costa, Alves & Silva, 2017, the only other Neotropical genus reported in siluriforms besides Cosmetocleithrum with species presenting two ribbon-like projections on the posterior margin of the dorsal bar, is considered a junior subjective synonym of Cosmetocleithrum.
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Affiliation(s)
- Simone C. Cohen
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Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, FIOCRUZ Av. Brasil, 4365 Rio de Janeiro RJ 21045-900 Brazil
| | - Marcia C. N. Justo
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Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, FIOCRUZ Av. Brasil, 4365 Rio de Janeiro RJ 21045-900 Brazil
| | - Daniele V. S. Gen
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Laboratório de Helmintos Parasitos de Peixes, Instituto Oswaldo Cruz, FIOCRUZ Av. Brasil, 4365 Rio de Janeiro RJ 21045-900 Brazil
| | - Walter A. Boeger
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Biological Interactions, Universidade Federal do Paraná Curitiba PR 81531-980 Brazil
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Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq SHIS QI 01 Brasília 71.605-001 Brazil
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Chagas De Souza D, Nogueira A, Corrêa LL. Parasitism by Clinostomum marginatum (Clinostomidae) in neotropical electric fish (Gymnotiformes) in the Brazilian Amazon. Ann Parasitol 2020; 66:101–106. [PMID: 32199001 DOI: 10.17420/ap6601.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Gymnotiformes are currently recognized as electric fish, the vast majority of which emit low power electrical discharges. Clinostomum trematodes have been the subject of numerous investigations in several host species due to the ability of metacercariae of this genus to infect the muscles, fins and internal organs of fish. The present study aimed to record, for the first time, the occurrence of parasitism by Clinostomum marginatum in Gymnotiformes from the natural environments of two tributaries of the Amazon River in the Brazilian Amazon. Two specimens of Gymnotus coropinae, ten specimens of Brachyhypopomus brevirostris, two specimens of Gymnorhamphycthys petiti and one specimen of Microsternarchus bilineatus were captured. Infection with C. marginatum was identified in the form of 12 encysted metacercariae in the epidermis, with a prevalence of 0.1%, a mean infection intensity of 12/fish and an average abundance of 1.2. This is the first record of parasitism by the C. marginatum in South American Gymnotiformes of the B. brevirostris species.
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Affiliation(s)
- Darlison Chagas De Souza
- Programa de Pós-graduação em Biodiversidade (PPGBEES), Instituto de Ciências e Tecnologia das Águas - ICTA, Universidade Federal do Oeste do Pará. Avenida Mendonça Furtado, nº 2946, Fátima, CEP 68040-470, Santarém, PA, Brazil
| | - Adília Nogueira
- Instituto Nacional de Pesquisas da Amazônia – INPA, Coordenação de Biodiversidade (CBIO) Laboratório de Fisiologia Comportamental e Evolução (LFCE), Av. André Araújo, 2936 - Campus I, Petrópolis - Manaus, AM, Brazil
| | - Lincoln Lima Corrêa
- Instituto de Ciências e Tecnologia das Águas - ICTA, Universidade Federal do Oeste do Pará - UFOPA, Avenida Mendonça Furtado, nº 2946, Fátima, CEP 68040-470, Santarém, PA, Brazil
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Van NTB, Cuong NV, Yen NTP, Nhi NTH, Kiet BT, Hoang NV, Hien VB, Thwaites G, Carrique-Mas JJ, Ribas A. Characterisation of gastrointestinal helminths and their impact in commercial small-scale chicken flocks in the Mekong Delta of Vietnam. Trop Anim Health Prod 2020; 52:53-62. [PMID: 31267344 PMCID: PMC6969868 DOI: 10.1007/s11250-019-01982-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 06/13/2019] [Indexed: 01/24/2023]
Abstract
Commercial small-scale chicken farms managed as all-in-all-out but operating with low standards of hygiene/biosecurity are increasingly common in Vietnam. These conditions facilitate the transmission of gastrointestinal helminths. However, there are no published data on helminths in these systems. We aimed (1) to determine the prevalence/burden of gastrointestinal helminths in small-scale commercial flocks in the Mekong Delta region and (2) to investigate the association between worm burdens and birds' weight and disease status. Randomly selected chickens (n = 120) from 'normal' flocks were investigated at the end of their production cycle (~ 18 weeks), as well as 90 chickens from 'diseased' flocks with signs of respiratory and/or severe disease. The gastrointestinal tract of chickens was dissected and all visible helminths were identified and counted. A total of 54.2% and 54.4% normal and diseased chickens contained helminths. Among colonised birds, the diseased ones harboured a higher mass of helminth worms than normal (healthy) birds (3.8 ± SD 8.6 g vs. 1.9 ± SD 6.3 g, respectively). Eight species were identified, including nematodes (Ascaridia galli, Cheilospirura hamulosa and Heterakis gallinarum), cestodes (Hymenolepis, Raillietina cesticillus, Raillietina echinobothrida, Raillietina tetragona,) and one trematode (Echinostomatidae). Heterakis gallinarum was the most prevalent helminth (43.3% and 42.2% in normal and sick chickens, respectively), followed by A. galli (26.7% and 41.1%). Colonised chickens weighed 101.5 g less than non-colonised birds. Colonisation was higher during the rainy months (May-November) for both H. gallinarum and A. galli. Anthelminthic usage was not associated with reduced helminth burdens. We recommend upgrading cleaning and disinfection and limiting access to ranging areas to control helminths in small-scale chicken flocks.
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Affiliation(s)
- Nguyen T B Van
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
| | - Nguyen V Cuong
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
| | - Nguyen T P Yen
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
| | - Nguyen T H Nhi
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Bach Tuan Kiet
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Nguyen V Hoang
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Vo B Hien
- Sub-Department of Animal Health and Production, 326-328 Dien Bien Phu, Cao Lanh, Dong Thap, Vietnam
| | - Guy Thwaites
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam
- Nuffield Department of Medicine, Oxford University, Old Road Campus, Headington, Oxford, UK
| | - Juan J Carrique-Mas
- Oxford University Clinical Research Unit, Hospital for Tropical Diseases, 764, Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam.
- Nuffield Department of Medicine, Oxford University, Old Road Campus, Headington, Oxford, UK.
| | - Alexis Ribas
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Prague, Czech Republic
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Velázquez-Urrieta Y, Oceguera-Figueroa A, León-Règagnon V. Two New Species of Haematoloechus (Digenea: Plagiorchidae) Parasitizing Rana brownorum (Amphibia: Ranidae) from Southeast Mexico. J Parasitol 2019; 105:724-732. [PMID: 31580787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023] Open
Abstract
In an ongoing investigation on the helminths of amphibians in southeastern Mexico, specimens of 2 undescribed species of Haematoloechus were collected from Rana brownorum. Haematoloechus ceciliae n. sp. is morphologically most similar to Haematoloechus meridionalis, but differs in the shape of the oral sucker, in the nature of the acetabulum, and in the distribution of the glandular cells in the pharyngeal region; Haematoloechus celestunensis n. sp. closely resembles Haematoloechus floedae, but differs in the form and size of the testes and measurements of acetabulum. COI and 28S DNA sequences of both new species show high divergence compared to other species of the genus. In the phylogenetic trees, H. ceciliae appears most closely related to Haematoloechus danbrooksi and H. celestunensis to Haematoloechus veracruzanus.
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Affiliation(s)
- Yanet Velázquez-Urrieta
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, Coyoacán, Cuidad de México, México, CP 04510
- Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Tercer circuito exterior s/n, Ciudad Universitaria, Copilco, Coyoacán, Cuidad de México, México, CP 04510
| | - Alejandro Oceguera-Figueroa
- Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Tercer circuito exterior s/n, Ciudad Universitaria, Copilco, Coyoacán, Cuidad de México, México, CP 04510
| | - Virginia León-Règagnon
- Estacion de Biología Chamela Instituto de Biología, Universidad Nacional Autónoma de México, A. P. 21, San Patricio, Jalisco, México, CP 48980
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Catalano S, Symeou A, Marsh KJ, Borlase A, Léger E, Fall CB, Sène M, Diouf ND, Ianniello D, Cringoli G, Rinaldi L, Bâ K, Webster JP. Mini-FLOTAC as an alternative, non-invasive diagnostic tool for Schistosoma mansoni and other trematode infections in wildlife reservoirs. Parasit Vectors 2019; 12:439. [PMID: 31522684 PMCID: PMC6745783 DOI: 10.1186/s13071-019-3613-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/08/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Schistosomiasis and food-borne trematodiases are not only of major public health concern, but can also have profound implications for livestock production and wildlife conservation. The zoonotic, multi-host nature of many digenean trematodes is a significant challenge for disease control programmes in endemic areas. However, our understanding of the epidemiological role that animal reservoirs, particularly wild hosts, may play in the transmission of zoonotic trematodiases suffers a dearth of information, with few, if any, standardised, reliable diagnostic tests available. We combined qualitative and quantitative data derived from post-mortem examinations, coprological analyses using the Mini-FLOTAC technique, and molecular tools to assess parasite community composition and the validity of non-invasive methods to detect trematode infections in 89 wild Hubert's multimammate mice (Mastomys huberti) from northern Senegal. RESULTS Parasites isolated at post-mortem examination were identified as Plagiorchis sp., Anchitrema sp., Echinostoma caproni, Schistosoma mansoni, and a hybrid between Schistosoma haematobium and Schistosoma bovis. The reports of E. caproni and Anchitrema sp. represent the first molecularly confirmed identifications for these trematodes in definitive hosts of sub-Saharan Africa. Comparison of prevalence estimates derived from parasitological analysis at post-mortem examination and Mini-FLOTAC analysis showed non-significant differences indicating comparable results between the two techniques (P = 1.00 for S. mansoni; P = 0.85 for E. caproni; P = 0.83 for Plagiorchis sp.). A Bayesian model, applied to estimate the sensitivities of the two tests for the diagnosis of Schistosoma infections, indicated similar median posterior probabilities of 83.1% for Mini-FLOTAC technique and 82.9% for post-mortem examination (95% Bayesian credible intervals of 64.0-94.6% and 63.7-94.7%, respectively). CONCLUSIONS Our results showed that the Mini-FLOTAC could be applied as an alternative diagnostic technique for the detection of the zoonotic S. mansoni and other trematodes in rodent reservoirs. The implementation of non-invasive diagnostics in wildlife would offer numerous advantages over lethal sampling methodologies, with potential impact on control strategies of zoonotic helminthiases in endemic areas of sub-Saharan Africa and on fostering a framework of animal use reduction in scientific practice.
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Affiliation(s)
- Stefano Catalano
- Centre for Emerging, Endemic and Exotic Diseases, Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, Hatfield, AL97TA UK
- London Centre for Neglected Tropical Disease Research, School of Public Health, Faculty of Medicine, Imperial College London, London, W21PG UK
| | - Amelia Symeou
- Centre for Emerging, Endemic and Exotic Diseases, Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, Hatfield, AL97TA UK
| | - Kirsty J. Marsh
- Centre for Emerging, Endemic and Exotic Diseases, Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, Hatfield, AL97TA UK
| | - Anna Borlase
- Centre for Emerging, Endemic and Exotic Diseases, Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, Hatfield, AL97TA UK
- London Centre for Neglected Tropical Disease Research, School of Public Health, Faculty of Medicine, Imperial College London, London, W21PG UK
| | - Elsa Léger
- Centre for Emerging, Endemic and Exotic Diseases, Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, Hatfield, AL97TA UK
- London Centre for Neglected Tropical Disease Research, School of Public Health, Faculty of Medicine, Imperial College London, London, W21PG UK
| | - Cheikh B. Fall
- Faculté de Médecine, de Pharmacie et d’Odonto-Stomatologie, Université Cheikh Anta Diop, BP 5005, Dakar, Senegal
| | - Mariama Sène
- Unité de Formation et de Recherche des Sciences Agronomiques, de l’Aquaculture et des Technologies Alimentaires, Université Gaston Berger, BP 234, Saint-Louis, Senegal
| | - Nicolas D. Diouf
- Unité de Formation et de Recherche des Sciences Agronomiques, de l’Aquaculture et des Technologies Alimentaires, Université Gaston Berger, BP 234, Saint-Louis, Senegal
| | - Davide Ianniello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, 80137 Naples, Italy
| | - Giuseppe Cringoli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, 80137 Naples, Italy
| | - Laura Rinaldi
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, 80137 Naples, Italy
| | - Khalilou Bâ
- Centre de Biologie et de Gestion des Populations, Institut de Recherche pour le Développement, BP 1386, Dakar, Senegal
| | - Joanne P. Webster
- Centre for Emerging, Endemic and Exotic Diseases, Department of Pathobiology and Population Sciences, The Royal Veterinary College, University of London, Hatfield, AL97TA UK
- London Centre for Neglected Tropical Disease Research, School of Public Health, Faculty of Medicine, Imperial College London, London, W21PG UK
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Waki T, Sasaki M, Mashino K, Iwaki T, Nakao M. Brachylaima lignieuhadrae n. sp. (Trematoda: Brachylaimidae) from land snails of the genus Euhadra in Japan. Parasitol Int 2019; 74:101992. [PMID: 31521765 DOI: 10.1016/j.parint.2019.101992] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 08/01/2019] [Accepted: 09/11/2019] [Indexed: 11/19/2022]
Abstract
Land snails of the genus Euhadra (Gastropoda: Bradybaenidae) are indigenous to the Japanese Archipelago. The larvae of an unknown species, tentatively named as Brachylaima sp. B (Trematoda: Brachylaimidae), have been found from Euhadra brandtii sapporo in Hokkaido, the northernmost island of Japan. In this study, a large-scale snail survey covering a wide area of Japan was conducted to confirm the larval parasite from members of Euhadra and related genera. Sporocysts with cercariae were found only from Eu. brandtii sapporo in Hokkaido and Euhadra callizona in central Honshu at low prevalence (1.0-9.6%). The metacercariae were detected widely from 6 species of Euhadra and the related genera at high prevalence (7.1-100%). A molecular identification by DNA barcoding demonstrated almost all of the larvae to be Brachylaima sp. B. Adult worms experimentally raised from the metacercariae were morphologically most similar to Brachylaima ezohelicis in Hokkaido, but could be differentiated by the microstructure of the tegumental surface. We propose Brachylaima lignieuhadrae n. sp. for the unknown species, based on the morphology, DNA profile, host specificity, and geographic distribution. Phylogeography of the new species suggests a possibility that migratory birds serve as the definitive hosts.
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Affiliation(s)
- Tsukasa Waki
- Graduate School of Science, Toho University, Funabashi, Chiba 274-8510, Japan.
| | - Mizuki Sasaki
- Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | - Kazuyuki Mashino
- The Firefly Museum of Toyota Town, Shimonoseki, Yamaguchi 750-0441, Japan
| | - Takashi Iwaki
- Meguro Parasitological Museum, Meguro-ku, Tokyo 153-0064, Japan
| | - Minoru Nakao
- Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
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Rajvanshi S, Verma J, Nirupama A. Validation of Bifurcohaptor spp. (Monogenoidea: Dactylogyridae) reported from India using molecular methods with inclusion of insilico study: A brief report on its host-specificity. Trop Biomed 2019; 36:726-741. [PMID: 33597495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A total of 17 species of the genus Bifurcohaptor Jain, 1958 have been reported from two fish families namely Bagridae Bleeker, 1858 (Mystus vittatus (Bloch, 1794), M. tengara (Hamilton, 1822), M. keletius (Valenciennes, 1840), Hemibagrus nemurus (Valenciennes, 1840), Rita rita (Hamilton, 1822) and Sperata seenghala (Sykes, 1839)) and Sisoridae Bleeker, 1858 (Bagarius bagarius (Hamilton, 1822)). Out of these, only two species viz. B. indicus and B. giganticus are found valid in India, parasitizing gills of Mystus spp. and Bagarius sp. Taxonomic studies suggest, present specimen of B. indicus and B. giganticus, both are morphologically close to species described by Jain (1958), except morphometric variations and posses 7 pairs of marginal hooks instead of 6 pairs. Present manuscript delves with the characterization of B. indicus and B. giganticus reported from India, using molecular techniques. Partial mt COI nucleotide sequence based insilico protein analysis and partial 28S and ITS-1 rDNA based phylogenetic analysis, estimated by Neighbour-joining (NJ) and Minimum Evolution (ME) methods revealed that the species of the genus Bifurcohaptor are genetically distinct and valid. The grouping of Bifurcohaptor spp. with other representatives of family Dactylogyridae supports morphology based placement into family Dactylogyridae. Present and previous host-parasite information suggests both Bifurcohaptor spp. are species specialist however, the genus Bifurcohaptor is generalist at generic level.
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Affiliation(s)
- S Rajvanshi
- Department of Zoology, University of Lucknow, Lucknow, U.P., India, 226007
| | - J Verma
- Department of Zoology, University of Lucknow, Lucknow, U.P., India, 226007
| | - A Nirupama
- Department of Zoology, University of Lucknow, Lucknow, U.P., India, 226007
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Sato C, Sasaki M, Nabeta H, Tomioka M, Uga S, Nakao M. A Philophthalmid Eyefluke from a Human in Japan. J Parasitol 2019; 105:619-623. [PMID: 31418651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
Philophthalmid eyeflukes are cosmopolitan parasites of birds and occasionally of mammals, including humans. A gravid adult of Philophthalmus sp. was found from the bulbar conjunctiva of a 64-yr-old woman in Japan, who was diagnosed with acute conjunctivitis. The parasite was morphologically most similar to Philophthalmus hegeneri, but distinctive in lacking an esophagus and in having clearly lobed testes. The DNA sequence analysis of genes for nuclear 28S ribosomal RNA and mitochondrial cytochrome c oxidase subunit 1 supported the identification at generic level. The morphological and molecular analyses strongly suggest that the eyefluke from a human in Japan should be treated as an undescribed species of Philophthalmus. The occurrence of human philophthalmosis is very rare. As far as we know, a total of 11 human cases have been reported worldwide to date.
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Affiliation(s)
- Chitoshi Sato
- 1 Okazaki Health Center, Okazaki, Aichi 444-8545, Japan
| | - Mizuki Sasaki
- 2 Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
| | | | - Masae Tomioka
- 4 Okazaki Medical Association Public Health Center, Okazaki, Aichi 444-0875, Japan
| | - Shoji Uga
- 5 Faculty of Nursing, Kobe Women's University, Kobe, Hyogo 650-0046, Japan
| | - Minoru Nakao
- 2 Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
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Pelegrini LS, Gião T, Vieira DHMD, Müller MI, da Silva RJ, de León GPP, de Azevedo RK, Abdallah VD. Molecular and morphological characterization of the metacercariae of two species of diplostomid trematodes (Platyhelminthes, Digenea) in freshwater fishes of the Batalha River, Brazil. Parasitol Res 2019; 118:2169-2182. [PMID: 31183598 DOI: 10.1007/s00436-019-06362-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/22/2019] [Indexed: 11/26/2022]
Abstract
The Diplostomidae include a large group of flatworms with complex life cycles and are frequently found parasitizing the eyes and central nervous system of freshwater fishes. The morphological identification of the metacercariae at species level is not always possible. Thus, molecular tools have become essential to assist in the parasite species determination. This study was aimed at describing two diplostomid metacercariae found in freshwater fish in São Paulo, Brazil, based on morphological characters and in the genetic characterization of COI sequences. Our results showed that the two recognized taxa (Tylodelphys sp. and Diplostomidae gen. sp.) appear to be different from the species already described in South America. Tylodelphys sp. differs morphologically from Tylodelphys xenopi, T. mashonense, T. jenynsiae, and T. scheuringi. The metacercariae of T. clavata and T. conifera are smaller than Tylodelphys sp., while T. podicipina is larger than the metacercariae described here. The phylogenetic analysis of COI sequences yielded Tylodelphys sp. as the sister species of Tylodelphys sp. 4, a species reported from the brain of the eleotrid Gobiomorus maculatus in Oaxaca, Mexico. The metacercariae identified as Diplostomidae gen. sp. are morphologically different from the known diplostomid metacercariae and did not match with other diplostomid sequences available. Diplostomidae gen. sp. is recovered as the sister species of Diplostomum ardeae. Although the morphological evidence and the COI sequences differentiate the metacercariae found, the absence of adult specimens of both species precludes the specific designation. This is one of the first papers that use an integrative taxonomy approach to describe the species diversity of diplostomid trematodes in Brazil.
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Affiliation(s)
- Larissa Sbeghen Pelegrini
- Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Rua Prof. Dr. Antônio Celso Wagner Zanin, Distrito de Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
| | - Thayana Gião
- Pró-reitoria de Pesquisa e Pós-graduação, Laboratório de Ictioparasitologia, Rua Irmã Arminda, Universidade do Sagrado Coração (USC), 10-50, Jardim Brasil, Bauru, São Paulo, 17011-160, Brazil
| | - Diego Henrique Mirandola Dias Vieira
- Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Rua Prof. Dr. Antônio Celso Wagner Zanin, Distrito de Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
| | - Maria Isabel Müller
- Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Rua Prof. Dr. Antônio Celso Wagner Zanin, Distrito de Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo (UNIFESP), Diadema, São Paulo, Brazil
| | - Reinaldo José da Silva
- Instituto de Biociências de Botucatu, Universidade Estadual Paulista (UNESP), Rua Prof. Dr. Antônio Celso Wagner Zanin, Distrito de Rubião Júnior, Botucatu, São Paulo, 18618-970, Brazil
| | - Gerardo Pérez-Ponce de León
- Instituto de Biologia, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 3000, Cd. Universitaria, Coyoacán, 04510, Mexico City, Mexico
| | - Rodney Kozlowiski de Azevedo
- Programa de Pós-Graduação em Análise de Sistemas Ambientais, Centro Universitário CESMAC, Maceió, Alagoas, Brazil
| | - Vanessa Doro Abdallah
- Programa de Pós-Graduação em Análise de Sistemas Ambientais, Centro Universitário CESMAC, Maceió, Alagoas, Brazil.
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Vélez J, Hirzmann J, Arévalo-González K, Lange MK, Seipp A, Gärtner U, Taubert A, Caballero S, Hermosilla C. Parasite fauna of wild Antillean manatees (Trichechus manatus manatus) of the Andean Region, Colombia. Parasit Vectors 2019; 12:183. [PMID: 31029160 PMCID: PMC6486965 DOI: 10.1186/s13071-019-3448-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 04/17/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Antillean manatees (Trichechus manatus manatus) are large herbivorous aquatic mammals living in limited areas of South, Central and North America. As with other aquatic mammals, Antillean manatees can be infected by a variety of protozoan and metazoan parasites, some of them with zoonotic potential, which affect not only their welfare but also population health status. Therefore, we conducted the first epidemiological survey in Colombian free-ranging Antillean manatees to estimate their actual gastrointestinal parasite status. RESULTS In total, 69 faecal samples were collected from free-ranging individual manatees during ecology field studies in the rivers Carare and San Juan and in two associated wetlands in the Andean region of Colombia. Parasite diversity encompassed six different endoparasite species. The highest prevalence was found for protozoan infections with Eimeria nodulosa (47.8%) and Eimeria manatus-like species (type A, B; 43.4%), followed by Entamoeba sp. (14.49%) and Giardia sp. (1.4%) infections. In addition, infections with the trematode Chiorchis fabaceus were detected at a high prevalence (33.3%). Molecular characterization of sirenian Eimeria species led to the distinction of three species, E. nodulosa and two E. manatus-like species (type A, B). Phylogenetic analyses indicated a host-specific adaptation of sirenian Eimeria species as previously reported for Eimeria species from other mammalian hosts. CONCLUSIONS This study provides the first record of Antillean manatee infection with Giardia and Entamoeba species in Colombia, representing two important anthropozoonotic parasite genera. This survey should serve as a baseline investigation for future monitoring on parasitic zoonoses in this mammal and encourage for investigations on their impact on both public health and wild manatee welfare.
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Affiliation(s)
- Juan Vélez
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, Schubertstr. 81, 35392 Giessen, Germany
- CIBAV Research Group, Veterinary Medicine School, University of Antioquia, Calle 70 No. 52-21, Medellín, Colombia
| | - Jörg Hirzmann
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - Katerin Arévalo-González
- LEMVA, Laboratory of Molecular Ecology of Aquatic Vertebrates, University of Los Andes, Carrera 1 No. 18A-12, Bogotá, Colombia
- Universidad Veracruzana, km. 7,5 Carretera Túxpan-Tampico, Túxpan, México
- Cabildo Verde Sabana de Torres, Carrera 11 No 14-75, Sabana de Torres, Colombia
| | - Malin K. Lange
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - Anika Seipp
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, Aulweg 123, 35392 Giessen, Germany
| | - Ulrich Gärtner
- Institute of Anatomy and Cell Biology, Justus Liebig University Giessen, Aulweg 123, 35392 Giessen, Germany
| | - Anja Taubert
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - Susana Caballero
- LEMVA, Laboratory of Molecular Ecology of Aquatic Vertebrates, University of Los Andes, Carrera 1 No. 18A-12, Bogotá, Colombia
| | - Carlos Hermosilla
- Institute of Parasitology, Biomedical Research Center Seltersberg (BFS), Justus Liebig University Giessen, Schubertstr. 81, 35392 Giessen, Germany
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Sapp SGH, Yabsley MJ, Bradbury RS. Abnormal Helminth Egg Development, Strange Morphology, and the Identification of Intestinal Helminth Infections. Emerg Infect Dis 2019; 24:1407-1411. [PMID: 30014830 PMCID: PMC6056116 DOI: 10.3201/eid2408.180560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Occasionally, abnormal forms of parasitic helminth eggs are detected during routine diagnostics. This finding can prove problematic in diagnosis because morphologic analysis based on tightly defined measurements is the primary method used to identify the infecting species and molecular confirmation of species is not always feasible. We describe instances of malformed nematode eggs (primarily from members of the superfamily Ascaridoidea) from human clinical practice and experimental trials on animals. On the basis of our observations and historical literature, we propose that unusual development and morphology of nematode and trematode eggs are associated with early infection. Further observational studies and experimentation are needed to identify additional factors that might cause abnormalities in egg morphology and production. Abnormal egg morphology can be observed early in the course of infection and can confound accurate diagnosis of intestinal helminthiases.
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Affiliation(s)
- Hyeri Seok
- Division of Infectious Diseases, Department of Medicine, Korea University Ansan Hospital, Ansan, Korea
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Sung Sohn
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyong Ran Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Dodangeh S, Daryani A, Sharif M, Gholami S, Kialashaki E, Moosazadeh M, Sarvi S. Freshwater snails as the intermediate host of trematodes in Iran: a systematic review. Epidemiol Health 2019; 41:e2019001. [PMID: 30754962 PMCID: PMC6446068 DOI: 10.4178/epih.e2019001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 12/16/2018] [Indexed: 11/24/2022] Open
Abstract
Freshwater snails, as the first intermediate hosts of trematodes, can cause health hazards in animals and humans. Recently, the World Health Organization has included Iran in a list of 6 countries known to have serious problems with fascioliasis. In addition, cercarial dermatitis is a job-related disease that is seen often in paddy workers, agricultural labourers, and fishermen in Iran, particularly in Mazandaran Province. Many studies have been conducted in Iran to survey larval trematodes in freshwater snails. However, to the best of our knowledge, no comprehensive data exist regarding infections in gastropods. Therefore, the aim of the present study was to estimate the types and prevalence of cercarial infections in snails in Iran. Electronic English-language and Persian-language databases were searched to identify 24 published articles reporting the prevalence of trematode infections in snails (9 species from 6 families) in various provinces of Iran. In total, 4.4% of gastropods were infected with the larval stages of trematodes. According to the studies reviewed in this meta-analysis' the highest infection prevalence was found in Radix auricularia (9.9%). Twelve larval species of trematodes were identified, and the highest prevalence of cercariae was found for Echinostomatidae cercariae (4.3%). Among the provinces explored, West Azerbaijan had the highest prevalence of infected snails (16.9%). The presence of trematodes in snails could pose a serious health problem in Iran. Thus, further studies are necessary to characterize these infections in other provinces.
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Affiliation(s)
- Samira Dodangeh
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ahmad Daryani
- Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mehdi Sharif
- Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Shirzad Gholami
- Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Elham Kialashaki
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mahmood Moosazadeh
- Health Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Shahabeddin Sarvi
- Department of Medical Parasitology and Mycology, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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Capasso S, D'Amico VL, Diaz JI. A new species of Maritrema (Trematoda: Microphallidae) parasitizing the Baird's sandpiper Calidris bairdii, and comments about diversity of Microphallidae in two Nearctic shorebirds at Patagonian sites in Argentina. Acta Trop 2019; 189:10-14. [PMID: 30248316 DOI: 10.1016/j.actatropica.2018.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 07/17/2018] [Accepted: 09/21/2018] [Indexed: 11/19/2022]
Abstract
Birds are hosts of a wide diversity of trematodes. Between them, the Microphallidae is a common family with a cosmopolitan distribution. Nevertheless, only 10 Maritrema species have been recorded previously in South America. The aim of the present paper is to describe a new species of Maritrema parasitizing the Nearctic Baird's sandpiper, Calidris bairdii in its wintering areas in Patagonia, Argentina. We also analyze and compare the microphallid diversity in two host species. We collected 44 C. bairdii and 50 Calidris fuscicollis in search of helminths. Trematodes were found only in C. bairdii. A total of 694 trematodes belonging to 4 microphallid species were found parasitizing the intestine and caeca. Four microphallid species were found: Maritrema formicae, Odhneria odhneri, Levinseniella cruzi and Maritrema pichi n. sp. M. formicae showed the highest prevalence, while M. pichi n. sp. was the species with the highest mean intensity and mean abundance. The new species M. pichi n. sp. differs from congeners by the position of the acetabulum that is included within the vitellarium ring, the ovary is anterior to the acetabulum, and the testes are lateral to it. We discuss the parasitological results in relation with the biological and ecological characteristics of both different host species.
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Affiliation(s)
- Sofia Capasso
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), FCNyM, UNLP, CONICET, Boulevard 120 s/n e/61 y 62, 1900 La Plata, Argentina.
| | - Verónica L D'Amico
- Centro para el Estudio de Sistemas Marinos (CESIMAR), CONICET, Brown 2915 (9120) Chubut, Argentina
| | - Julia I Diaz
- Centro de Estudios Parasitológicos y de Vectores (CEPAVE), FCNyM, UNLP, CONICET, Boulevard 120 s/n e/61 y 62, 1900 La Plata, Argentina
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Mendoza-Franco EF, Caspeta-Mandujano JM, Ramírez-Martínez C. New species of Paracolpenteron n. gen. and Ancyrocephalus (Monogenea, Dactylogyridae) inhabiting the urinary bladder and gills of the Maya needlefish Strongylura hubbsi (Beloniformes, Belonidae) from Chiapas, Mexico. Parasite 2018; 25:55. [PMID: 30444487 PMCID: PMC6238653 DOI: 10.1051/parasite/2018053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 10/29/2018] [Indexed: 12/03/2022] Open
Abstract
Parasitological examination of the maya needlefish Strongylura hubbsi Collette (Belonidae) from the Rio Lacantún basin in the Montes Azules Biosphere Reserve, Chiapas, Mexico showed that specimens were parasitized by two monogenean species in two different sites: Paracolpenteron hubbsii n. gen., n. sp in the urinary bladder and Ancyrocephalus chiapanensis n. sp in the gill lamellae. Paracolpenteron hubbsii differs from other dactylogyrid species without a haptoral anchor/bar complex infecting the urinary systems, gills and nasal cavities by the general morphology of hooks, a dextral vaginal opening, a tubular male copulatory organ comprising a base from which a coiled shaft arises in counterclockwise direction, and an unarticulated Y-shaped accessory piece. Ancyrocephalus chiapanensis n. sp. resembles Ancyrocephalus cornutus William & Rogers, 1972 from the gills of Strongylura marina from Florida from which it differs in possessing a twisted tube of the male copulatory organ (curved in A. cornutus), ventral bar with cavities on the ends (cavities absent in A. cornutus) and by the size of the ventral (length 31-34 μm vs. 24-27 μm in A. cornutus) and dorsal (length 25-28 μm vs. 18-22 μm in A. cornutus) anchors. These new monogeneans are described herein and their biogeography is briefly discussed based on the previous phylogenetic hypotheses concerning the host family.
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Affiliation(s)
- Edgar F. Mendoza-Franco
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Instituto de Ecología Pesquerías y Oceanografía del Golfo de México (EPOMEX), Universidad Autónoma de Campeche Av. Héroe de Nacozari No. 480 CP 24029 San Francisco de Campeche Campeche México
| | - Juan M. Caspeta-Mandujano
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Facultad de Ciencias Biológicas y Centro de Investigaciones Biológicas, Laboratorio de Parasitología de Animales Silvestres, Universidad Autónoma del Estado de Morelos, Avenida Universidad No. 1001 Colonia Chamilpa 62209 Cuernavaca Morelos México
| | - Carlos Ramírez-Martínez
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Laboratorio de Producción Acuícola, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León (UANL) Ex-Hacienda el Canadá CP. 66050 México
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Elliott JE, McDermott AJ, Camus AC. Pathology in Practice. J Am Vet Med Assoc 2018; 253:1273-1275. [PMID: 30398429 DOI: 10.2460/javma.253.10.1273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Sohn WM, Na BK. Morphological Characteristics and Fish Hosts of Isoparorchis sp. (Digenea: Isoparorchiidae) in Korea. Korean J Parasitol 2018; 56:501-507. [PMID: 30419737 PMCID: PMC6243189 DOI: 10.3347/kjp.2018.56.5.501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 09/02/2018] [Indexed: 11/23/2022]
Abstract
We described here the morphological characteristics for the species identification and fish hosts of Isoparorchis sp. (Digenea: Isoparorchiidae) in the Republic of Korea (Korea). Total 1,371 freshwater fishes collected in Yangcheon (Stream) in Sancheong-gun, Gyeongsangnam-do were examined by the artificial digestion methods to survey the infection status of digenetic trematode metacercariae for 4 years (2013–2016). Adult and larval worms of Isoparorchis sp. were detected in 38 (8.4%) out of 451 fish in 4 species, i.e., Pungtungia herzi, Acheilognathus koreensis, Squalidus japonicus coreanus and Odontobutis platycephala, examined. The infection density was 1.1 worm per fish infected. They were mainly found in the subcutaneous tissues and abdominal cavities. Nodules with worms in the subcutaneous tissues were revealed as the blue ink-colored bulges. Adults leaf-like, 21.6×9.84 mm in average size. The ratio of body length to body width was 2.20: 1. Oral sucker subterminal, 1.03×1.22 mm. Pharynx muscular, 0.55×0.54 mm. Esophagus very short. Ceca convoluted, terminated near the posterior end. Ventral sucker anterior 1/3.75, 1.99×2.10 mm. The ratio of ventral sucker to oral sucker was 1.74: 1. Testes round to elliptical, both sides of ventral sucker, 1.43×1.33 mm. Vitellaria highly dendritic, posterior 1/3 level. Eggs operculated, embryonated, 52×32 μm in size. By the present study, 4 fish species aforementioned are to be listed as the fish hosts of Isoparorchis sp. in Korea and additionally the morphological characteristics are to be described for the species identification.
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Müller MI, Morais DH, Silva RJD. Molecular phylogenetic position of Haplometroides intercaecalis (Digenea, Plagiorchiidae). Acta Parasitol 2018; 63:522-526. [PMID: 29975646 DOI: 10.1515/ap-2018-0062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 04/12/2018] [Indexed: 11/15/2022]
Abstract
Three valid species of Haplometroides Odhner, 1910 parasitise snakes and amphisbaenians from South America. This study provides additional data on morphometric and molecular phylogenetic position inferred from the nuclear ribosomal gene 28S (partial). DNA sequences were isolated from Haplometroides intercaecalis Silva, Ferreira and Strüssmann, 2007 found in one specimen of Phalotris matogrossensis Lema, D'Agostini and Cappellari, 2005. Five digenean specimens were recovered from the esophagus of this snake, and four specimens were used for morphometrical studies and one specimen for molecular analysis. Phylogenetic analysis using maximum likelihood and Bayesian methods was conducted with sequences available for the order Plagiorchiida and its phylogenetic position places H. intercaecalis among the brachycoeliids Brachycoelium (Dujardin, 1845) Stiles and Hassall, 1898 and Parabrachycoelium Pérez-Ponce de León, Mendoza-Garfias, Razo-Mendivil and Parra-Olea, 2011, and the mesocoeliid Mesocoelium Odhner, 1910, not closely related to plagiorchids as expected. Due to morphological differences among these families, it may be necessary to create a new family to accommodate Haplometroides spp. However, more genera/taxa as well as other molecular markers should be added in future studies to confirm our results and resolve this matter. This is the first phylogenetic positioning of digeneans of the genus Haplometroides, contributing to the systematic analysis of the helminthological biodiversity of Neotropical snakes.
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Affiliation(s)
- Maria Isabel Müller
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Instituto de Biociências, Departamento de Parasitologia, Distrito de Rubião Júnior s/n, CEP 18618-689, Botucatu, São Paulo, Brazil
| | - Drausio Honorio Morais
- Universidade Federal Rural da Amazônia (UFRA), PA 275, Km 13, Zona Rural. CEP: 68.515-000, Parauapebas, Pará, Brazil
| | - Reinaldo José da Silva
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Instituto de Biociências, Departamento de Parasitologia, Distrito de Rubião Júnior s/n, CEP 18618-689, Botucatu, São Paulo, Brazil
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Enabulele EE, Awharitoma AO, Lawton SP, Kirk RS. First molecular identification of an agent of diplostomiasis, Diplostomum pseudospathaceum (Niewiadomska 1984) in the United Kingdom and its genetic relationship with populations in Europe. Acta Parasitol 2018; 63:444-453. [PMID: 29975660 DOI: 10.1515/ap-2018-0054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/02/2018] [Indexed: 11/15/2022]
Abstract
Trematode genus Diplostomum comprises of parasitic species which cause diplostomiasis, the 'white eye' disease in fish and heavy infection can result in mortality. The increasing availability of DNA sequences of accurately identified Diplostomum species on public data base presently enables the rapid identification of species from novel sequences. We report the first molecular evidence of the occurrence of D. pseudospathaceum in the United Kingdom. Two gene regions, nuclear internal transcribed spacer cluster (ITS1-5.8S-ITS2) and mitochondrial cytochrome c oxidase subunit 1 (cox1) of cercariae from infected aquatic snails, Lymnaea stagnalis collected in several locations in Southern England were sequenced. Phylogenetic analysis based on both sequenced genes revealed that the novel sequences were D. pseudospathaceum. Molecular diversity analysis of published D. pseudospathaceum cox1 sequences from seven countries in Europe and the novel sequences from the present study revealed high diversity, but low nucleotide divergence and a lack of gene differentiation between the populations. Haplotype network analysis depicted a star-like pattern and revealed a lack of geographic structure in the population. Fixation indices confirmed gene flow between populations and we suspect high levels of dispersal facilitated by highly mobile second intermediate (fish) and definitive (piscivorous birds) host may be driving gene flow between populations. Neutrality tests and mismatch distribution indicated recent population growth/expansion for D. pseudospathaceum in Europe.
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Affiliation(s)
- Egie Elisha Enabulele
- Department of Animal and Environmental Biology, Faculty of Life Sciences, University of Benin Nigeria, PMB 1154, Benin City, Africa
| | - Agnes Ogheneruemu Awharitoma
- Department of Animal and Environmental Biology, Faculty of Life Sciences, University of Benin Nigeria, PMB 1154, Benin City, Africa
| | - Scott P Lawton
- Molecular Parasitology Laboratory, School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston upon Thames, Surrey, KT1 2EE, UK
| | - Ruth S Kirk
- Molecular Parasitology Laboratory, School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston upon Thames, Surrey, KT1 2EE, UK
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Wyrosdick H, Chapman A, Mignucci-Giannoni AA, Rivera-Pérez CI, Bonde RK. Internal parasites of the two subspecies of the West Indian manatee Trichechus manatus. Dis Aquat Organ 2018; 130:145-152. [PMID: 30198489 DOI: 10.3354/dao03270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The West Indian manatee Trichechus manatus is divided into 2 subspecies: the Antillean (T. m. manatus) and Florida (T. m. latirostris) manatees. This study reports sample prevalence of manatee parasites from populations of these 2 subspecies in different geographical locations. Although necropsy is a valuable diagnostic tool for parasite infections, the need for antemortem diagnostic techniques is important. Fecal samples collected during necropsies of Antillean manatees (n = 3) in Puerto Rico and Florida manatees (n = 10) in Crystal River, Florida, as well as from live-captured Florida manatees (n = 11) were evaluated using centrifugal flotation with sucrose and ethyl acetate sedimentation to compare parasites from each of the populations. Although both fecal examination methods provided similar results, the centrifugal flotation method required less time for diagnosis. The most common parasite eggs found in both populations included the trematodes Pulmonicola cochleotrema and Nudacotyle undicola, oocysts of the coccidian Eimeria spp., and eggs of the ascarid Heterocheilus tunicatus. Eggs of the trematode Chiorchis groschafti were found in both populations of manatees; however, eggs of a related species, Chiorchis fabaceus, were abundant in the Florida samples, but not found in Puerto Rico populations. Trematode eggs of Moniligerum blairi were found in both populations, but were more common in the Florida manatee (42%) than the Antillean manatee (33%). To our knowledge, this is the first report of both Eimeria manatus and Eimeria nodulosa oocysts in Antillean manatees from Puerto Rico.
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Affiliation(s)
- Heidi Wyrosdick
- Department of Biomedical and Diagnostic Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN 37996, USA
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Kirilova E, Kecko S, Mežaraupe L, Gavarāne I, Pučkins A, Mickeviča I, Rubeniņa I, Osipovs S, Bulanovs A, Pupiņš M, Kirjušina M. Novel luminescent dyes for confocal laser scanning microscopy used in Trematoda parasite diagnostics. Acta Biochim Pol 2018; 65:449-454. [PMID: 30148507 DOI: 10.18388/abp.2018_2574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/27/2018] [Accepted: 07/12/2018] [Indexed: 11/10/2022]
Abstract
Benzanthrone derivates are now widely used in many industrial and scientific applications as dyes for polymers and textiles. In biochemical, biomedical and diagnostics investigations benzanthrone dyes are used as a lipophilic fluorescent probe since many benzanthrone derivates demonstrate bright fluorescence and they have ability to intercalate between membrane lipids. The aim of research presented here was to assess the luminescence ability of benzanthrone derivatives using microscopic visualization of biological objects. Accordingly, specimens of freshwater trematodes: Diplostomum spathaceum, Diplodiscus subclavatus and Prosotocus confusus, were stained by novel benzanthrone dyes using different fixatives. The samples were examined under a confocal laser scanning microscope. All of the dyes tested demonstrated good results for digestive and reproductive system visualization. Based on obtained results we conclude that benzanthrone dyes could be used for internal and external structure confocal laser scanning microscopic imaging of trematode specimens.
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Affiliation(s)
- Elena Kirilova
- Daugavpils University, Institute of Life Sciences and Technology, Department of Biotechnology, Daugavpils, Latvia
| | - Sanita Kecko
- Daugavpils University, Institute of Life Sciences and Technology, Department of Ecology, Daugavpils, Latvia
| | - Ligita Mežaraupe
- Daugavpils University, Institute of Life Sciences and Technology, Department of Ecology, Daugavpils, Latvia
| | - Inese Gavarāne
- Daugavpils University, Institute of Life Sciences and Technology, Department of Biotechnology, Daugavpils, Latvia
| | - Aleksandrs Pučkins
- Daugavpils University, Institute of Life Sciences and Technology, Department of Biotechnology, Daugavpils, Latvia
| | - Ilona Mickeviča
- Daugavpils University, Institute of Life Sciences and Technology, Department of Biotechnology, Daugavpils, Latvia
| | - Ilze Rubeniņa
- Daugavpils University, Institute of Life Sciences and Technology, Department of Ecology, Daugavpils, Latvia
| | - Sergejs Osipovs
- Daugavpils University, Institute of Life Sciences and Technology, Department of Biotechnology, Daugavpils, Latvia
| | - Andrejs Bulanovs
- Daugavpils University, Institute of Life Sciences and Technology, Department of Technology, Daugavpils, Latvia
| | - Mihails Pupiņš
- Daugavpils University, Institute of Life Sciences and Technology, Department of Ecology, Daugavpils, Latvia
- Latgales Zoo, Daugavpils, Latvia
| | - Muza Kirjušina
- Daugavpils University, Institute of Life Sciences and Technology, Department of Ecology, Daugavpils, Latvia
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Zago AC, Franceschini L, Müller MI, Silva RJD. A new species of Cacatuocotyle (Monogenea, Dactylogyridae) parasitizing Astyanax spp. (Characiformes, Characidae) from Brazil, including molecular data and a key to species identification. Acta Parasitol 2018; 63:261-269. [PMID: 29654691 DOI: 10.1515/ap-2018-0030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 01/15/2018] [Indexed: 11/15/2022]
Abstract
The present study describes Cacatuocotyle papilionis n. sp. (Monogenea, Dactylogyridae) from the skin of the characid fishes Astyanax lacustris (Lütken, 1875) (=Astyanax altiparanae Garutti & Britski, 2000) and Astyanax fasciatus (Cuvier, 1819) (Characiformes, Characidae) from the Southeast of Brazil, supported by morphological and molecular data. The new species differs from all congeners, mainly due to the morphology of the ventral bar (resembling a butterfly), accessory piece, and the number of rings of the male copulatory organ (MCO), comprising a coiled tube with 4.5-5.5 counterclockwise rings. The first molecular data for this monogenean genus is provided in this study, using the partial sequences of the ribosomal gene (28S), as well as providing an identification key to the species.
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Affiliation(s)
- Aline Cristina Zago
- São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
| | - Lidiane Franceschini
- São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
| | - Maria Isabel Müller
- São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
| | - Reinaldo José da Silva
- São Paulo State University (Unesp), Institute of Biosciences, Botucatu, Brazil, CEP 18618-689
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Chen MF, O'Neill SM, Carey AJ, Conrad RH, Stewart BA, Snekvik KR, Ylitalo GM, Hershberger PK. Infection by Nanophyetus salmincola and Toxic Contaminant Exposure in Out-migrating Steelhead from Puget Sound, Washington: Implications for Early Marine Survival. J Aquat Anim Health 2018; 30:103-118. [PMID: 29710401 DOI: 10.1002/aah.10017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 12/14/2017] [Indexed: 06/08/2023]
Abstract
Out-migrating steelhead Oncorhynchus mykiss from four Puget Sound rivers and associated marine basins of Puget Sound in Washington State were examined for the parasite, Nanophyetus salmincola in 2014 to determine whether recent trends in reduced marine survival are associated with the presence of this pathogen. A subset of steelhead from three of these river-marine basin combinations was analyzed for the presence of persistent organic pollutants (POPs) to assess whether exposure to these contaminants is a contributing factor to their reduced marine survival. The prevalence and parasite load of N. salmincola were significantly higher in fish from central and southern Puget Sound than in fish from river systems in northern Puget Sound. The proportion of steelhead samples with concentrations of POPs higher than adverse effects thresholds (AETs) or concentrations known to cause adverse effects was also greater in fish from the central and southern regions of Puget Sound than in those from the northern region. Polybrominated diphenyl ether concentrations associated with increased disease susceptibility were observed in 10% and 40% of the steelhead sampled from central and southern Puget Sound regions, respectively, but in none of the fish sampled from the northern region. The AET for polychlorinated biphenyls was exceeded in steelhead collected from marine habitats: 25% of the samples from the marine basins in the central and southern regions of Puget Sound and 17% of samples from northern Puget Sound region. Both N. salmincola and POP levels suggest there are adverse health effects on out-migrating steelhead from one southern and one central Puget Sound river that have lower early marine survival than those from a river system in northern Puget Sound.
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Affiliation(s)
- M F Chen
- Northwest Indian Fisheries Commission, 6730 Martin Way East, Olympia, Washington, 98670, USA
| | - S M O'Neill
- Washington Department of Fish and Wildlife, Post Office Box 43150, Olympia, Washington, 98504-3150, USA
| | - A J Carey
- Washington Department of Fish and Wildlife, Post Office Box 43150, Olympia, Washington, 98504-3150, USA
| | - R H Conrad
- Northwest Indian Fisheries Commission, 6730 Martin Way East, Olympia, Washington, 98670, USA
| | - B A Stewart
- Northwest Indian Fisheries Commission, 6730 Martin Way East, Olympia, Washington, 98670, USA
| | - K R Snekvik
- College of Veterinary Medicine, Washington State University, Pullman, Washington, 99164, USA
| | - G M Ylitalo
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, Environmental and Fisheries Sciences Division, 2725 Montlake Boulevard East, Seattle, Washington, 98112, USA
| | - P K Hershberger
- U.S. Geologic Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, 616 Marrowstone Point Road, Nordland, Washington, 98358, USA
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Morales-Ávila JR, Saldierna-Martínez RJ, Moreno-Alcántara M, Violante-González J. New insights on the role of the holoplanktonic mollusk Firoloida desmarestia (Gastropoda: Pterotracheidae) as host for digenetic trematodes. Parasitol Res 2018; 117:2149-2158. [PMID: 29732513 DOI: 10.1007/s00436-018-5902-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 04/26/2018] [Indexed: 11/27/2022]
Abstract
Interactions of holoplanktonic mollusks with symbionts and parasites are poorly known. We investigated the ecology of infection (prevalence, intensity, and abundance) in Firoloida desmarestia, caught during two sampling campaign sessions in 2012, off the Baja California Peninsula, Mexico (IMECOCAL, 83 stations) and a coastal research center near La Sorpresa Beach, Baja California Sur, in the Gulf of California (14 stations). Only females of F. desmarestia were parasitized. Hemiuroidea parthenita rediae infected 1% of F. desmarestia population at IMECOCAL, whereas young unencysted metacercariae stages of Opechona pyriformis (Lepocreadiidae) parasitized 6.6% of the same host species at La Sorpresa. Overall, finding of rediae and metacercariae represent new geographical and host records and shows that F. desmarestia has a dual host function in the life cycle of trematodes. As first intermediate host, F. desmarestia harbors hemiuroid rediae, functioning as the source of infection to other zooplanktonic groups by dispersing successive cercariae. As second intermediate hosts, it harbors infective unencysted metacercariae stages of O. pyriformis, which parasitize nektonic predators (fish), most likely through trophic interaction. Our results suggest that some trematodes are able to spend their entire life cycle infecting only pelagic hosts. Parasite-F. desmarestia interaction is shown in a conceptual model, where we propose that transmission of trematodes may occur between individuals of F. desmarestia within the same swarm. Relevance of F. desmarestia as a potential host in which life cycle abbreviation of trematodes may take place is discussed. This is the first quantitative study of helminth interaction on F. desmarestia in the Eastern Pacific.
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Affiliation(s)
- José Raúl Morales-Ávila
- Ecología y Conservación de la Vida Silvestre A.C. (ECOVIS), Marcelo Rubio, entre Oaxaca y Jalisco 3530, 23060, La Paz, Baja California Sur, Mexico.
- Centro Interdisciplinario de Ciencias Marinas (CICIMAR), Departamento de Plancton y Ecología Marina, Instituto Politécnico Nacional, Avenida IPN s/n, 23096, La Paz, Baja California Sur, Mexico.
| | - Ricardo Javier Saldierna-Martínez
- Centro Interdisciplinario de Ciencias Marinas (CICIMAR), Departamento de Plancton y Ecología Marina, Instituto Politécnico Nacional, Avenida IPN s/n, 23096, La Paz, Baja California Sur, Mexico
| | - María Moreno-Alcántara
- Centro Interdisciplinario de Ciencias Marinas (CICIMAR), Departamento de Plancton y Ecología Marina, Instituto Politécnico Nacional, Avenida IPN s/n, 23096, La Paz, Baja California Sur, Mexico
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Asok Kumar M, Kumar D, Palanivelu M, Annamalai L, Mathesh K, Singh R, Sharma AK, Dhama K. Pathological and molecular studies of the renal trematode Paratanaisia bragai in Indian peafowls (Pavo cristatus). Acta Parasitol 2018; 63:214-219. [PMID: 29351075 DOI: 10.1515/ap-2018-0025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 11/24/2017] [Indexed: 11/15/2022]
Abstract
Endoparasitic diseases are commonly encountered in free-ranging birds. Although not all endoparasites cause disease, persistent infection with large numbers of parasites almost always affects normal physiological functions, leading to deleterious effects on the host. This paper describes the anatomopathological alterations caused by the renal trematode Paratanaisia bragai in Indian peafowl (n = 3) and examines the phylogeny of these and related parasites. Peafowl from forests in and around the Bareilly region, Uttar Pradesh, India, were necropsied, and microscopic and molecular investigations were performed. The peafowl were confirmed to be infected with P. bragai. Significant gross pathological lesions suggested nephrosis, and microscopic findings indicated a mild-to-moderate degree of nephrosis caused by the parasites in the tissue. The parasites were identified as P. bragai by histomorphological analysis of adult and eggs in the ureters, and the identification was confirmed by PCR and phylogenetic analysis. Nucleotide sequencing of the PCR products from the renal trematodes recovered from Indian peafowl revealed a close association with P. bragai from Columbiformes in the United Kingdom and Spain. The pathology and molecular epidemiology of parasitic diseases affecting peafowl is not well understood in India. This is the first report from India and the second report worldwide to document P. bragai infection in peafowl.
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Affiliation(s)
- M Asok Kumar
- Avian Diseases Section, Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122, U.P., India
| | - Deepak Kumar
- Genetic Engineering Virus Laboratory, Division of Veterinary Biotechnology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122, U.P., India
| | - Munuswamy Palanivelu
- Avian Diseases Section, Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122, U.P., India
| | | | - Karikalan Mathesh
- Centre for Wildlife, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122 U.P., India
| | - Rajendra Singh
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122 U.P., India
| | - Anil Kumar Sharma
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122 U.P., India
| | - Kuldeep Dhama
- Avian Diseases Section, Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly - 243122, U.P., India
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García-Vásquez A, Pinacho-Pinacho CD, Martínez-Ramírez E, Rubio-Godoy M. Two new species of Gyrodactylus von Nordmann, 1832 from Profundulus oaxacae (Pisces: Profundulidae) from Oaxaca, Mexico, studied by morphology and molecular analyses. Parasitol Int 2018; 67:517-527. [PMID: 29567487 DOI: 10.1016/j.parint.2018.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/19/2018] [Accepted: 03/17/2018] [Indexed: 11/17/2022]
Abstract
In the present study, two new species of Gyrodactylus are described from Profundulus oaxacae, a fish endemic to the Pacific slope of Oaxaca State, Mexico. Fishes were collected within their distribution range in 5 localities in the Atoyac-Verde River. Gyrodactylus montealbani n. sp. and G. zapoteco n. sp. were erected and characterized morphologically (sclerites of the attachment apparatus and the male copulatory organ) and molecularly (sequences of the Internal Transcribed Spacer region of rDNA). The haptoral sclerites of the new species are similar to those of Gyrodactylus iunuri and Gyrodactylus tepari, both recently described from the goodeid fish Goodea atripinnis, from the Mexican States of Jalisco and Querétaro, respectively; and to Gyrodactylus xtachuna described from the poeciliid Poeciliopsis gracilis in Veracruz State, Mexico - nonetheless, these species can all be discriminated based on their marginal hook morphology. Specimens of G. montealbani n. sp. and G. zapoteco n. sp. were sequenced, and were aligned with sequences of 25 other Gyrodactylus spp. Both Maximum likelihood and Bayesian inference analyses indicated that the two new species are members of independent, well-supported lineages - these are the first Gyrodactylus species described from Profundulus oaxacae.
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Affiliation(s)
- Adriana García-Vásquez
- Instituto de Ecología, A.C., Red de Biología Evolutiva, km 2.5 Ant. Carretera a Coatepec, Xalapa, Veracruz 91070, Mexico.
| | - Carlos Daniel Pinacho-Pinacho
- CONACyT, Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, km 2.5 Ant. Carretera a Coatepec, Xalapa, Veracruz 91070, Mexico
| | - Emilio Martínez-Ramírez
- Área de Acuacultura, Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional, Unidad Oaxaca, Instituto Politécnico Nacional, Hornos Núm. 1003, Col. Noche Buena, Santa Cruz Xoxocotlán, C. P. 71230 Oaxaca, Mexico
| | - Miguel Rubio-Godoy
- Instituto de Ecología, A.C., Red de Biología Evolutiva, km 2.5 Ant. Carretera a Coatepec, Xalapa, Veracruz 91070, Mexico
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Fensham JR, Bubner E, D'Antignana T, Landos M, Caraguel CGB. Random and systematic sampling error when hooking fish to monitor skin fluke (Benedenia seriolae) and gill fluke (Zeuxapta seriolae) burden in Australian farmed yellowtail kingfish (Seriola lalandi). Prev Vet Med 2018; 153:7-14. [PMID: 29653737 DOI: 10.1016/j.prevetmed.2018.02.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 01/04/2018] [Accepted: 02/22/2018] [Indexed: 11/18/2022]
Abstract
The Australian farmed yellowtail kingfish (Seriola lalandi, YTK) industry monitor skin fluke (Benedenia seriolae) and gill fluke (Zeuxapta seriolae) burden by pooling the fluke count of 10 hooked YTK. The random and systematic error of this sampling strategy was evaluated to assess potential impact on treatment decisions. Fluke abundance (fluke count per fish) in a study cage (estimated 30,502 fish) was assessed five times using the current sampling protocol and its repeatability was estimated the repeatability coefficient (CR) and the coefficient of variation (CV). Individual body weight, fork length, fluke abundance, prevalence, intensity (fluke count per infested fish) and density (fluke count per Kg of fish) were compared between 100 hooked and 100 seined YTK (assumed representative of the entire population) to estimate potential selection bias. Depending on the fluke species and age category, CR (expected difference in parasite count between 2 sampling iterations) ranged from 0.78 to 114 flukes per fish. Capturing YTK by hooking increased the selection of fish of a weight and length in the lowest 5th percentile of the cage (RR = 5.75, 95% CI: 2.06-16.03, P-value = 0.0001). These lower end YTK had on average an extra 31 juveniles and 6 adults Z. seriolae per Kg of fish and an extra 3 juvenile and 0.4 adult B. seriolae per Kg of fish, compared to the rest of the cage population (P-value < 0.05). Hooking YTK on the edge of the study cage biases sampling towards the smallest and most heavily infested fish in the population, resulting in poor repeatability (more variability amongst sampled fish) and an overestimation of parasite burden in the population. In this particular commercial situation these finding supported that health management program, where the finding of an underestimation of parasite burden could provide a production impact on the study population. In instances where fish populations and parasite burdens are more homogenous, sampling error may be less severe. Sampling error when capturing fish from sea cage is difficult to predict. The amplitude and direction of this error should be investigated for a given cultured fish species across a range of parasite burden and fish profile scenarios.
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Affiliation(s)
- J R Fensham
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia; Future Fisheries Veterinary Services Pty Ltd, East Ballina, New South Wales, 2478, Australia
| | - E Bubner
- Lincoln Marine Science Centre, School of Biological Sciences, Flinders University, Port Lincoln, South Australia, 5606, Australia
| | - T D'Antignana
- Lincoln Marine Science Centre, School of Biological Sciences, Flinders University, Port Lincoln, South Australia, 5606, Australia
| | - M Landos
- Future Fisheries Veterinary Services Pty Ltd, East Ballina, New South Wales, 2478, Australia
| | - C G B Caraguel
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy Campus, Roseworthy, South Australia, 5371, Australia.
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Hermida M, Cavaleiro B, Gouveia L, Saraiva A. Parasites of skipjack, Katsuwonus pelamis, from Madeira, Eastern Atlantic. Parasitol Res 2018; 117:1025-1033. [PMID: 29397438 DOI: 10.1007/s00436-018-5778-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 01/22/2018] [Indexed: 11/25/2022]
Abstract
Skipjack tuna, Katsuwonus pelamis, is a tropical species of economic importance for fisheries around the world. It occurs seasonally in subtropical waters around Madeira archipelago, in the warmer months. In this study, a parasitological analysis was carried out on a sample of 30 skipjack caught near Madeira Island. A total of 24 parasite taxa were found in this sample. The skipjack parasite community detected was characterized by a wide diversity of parasites, with a predominance of adult didymozoid trematodes, and high prevalences of Tentacularia coryphaenae cestode larvae and Anisakis sp. larvae. Microhabitat distribution of gill parasites was assessed for the most prevalent species, and correlations between parasite abundance and various host features such as size, condition, and fat content were investigated. Parasite taxa which might be useful as biological tags in future studies of skipjack migrations in the Eastern Atlantic were selected.
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Affiliation(s)
- Margarida Hermida
- CIIMAR-Madeira, Interdisciplinary Centre of Marine and Environmental Research of Madeira, Edificio Madeira Tecnopolo, Piso 0, Caminho da Penteada, 9020-105, Funchal, Madeira, Portugal.
- Oceanic Observatory of Madeira, Edificio Madeira Tecnopolo, Piso 0, Caminho da Penteada, 9020-105, Funchal, Madeira, Portugal.
| | - Bárbara Cavaleiro
- Faculty of Sciences, Biology Department, University of Porto, Rua do Campo Alegre, Edifício FC4, 4169-007, Porto, Portugal
| | - Lídia Gouveia
- Research Services Directory, Regional Directorate of Fisheries of Madeira (DRP/DSI), Estrada da Pontinha, 9004-562, Funchal, Madeira, Portugal
| | - Aurélia Saraiva
- Faculty of Sciences, Biology Department, University of Porto, Rua do Campo Alegre, Edifício FC4, 4169-007, Porto, Portugal
- CIIMAR Interdisciplinary Center of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208, Porto, Portugal
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