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Torres JM, de Oliveira CE, Santos FM, Sano NY, Martinez ÉV, Alves FM, Tavares LER, Roque ALR, Jansen AM, Herrera HM. Trypanosomatid diversity in a bat community of an urban area in Campo Grande, Mato Grosso do Sul, Brazil. Infect Genet Evol 2024; 118:105563. [PMID: 38301855 DOI: 10.1016/j.meegid.2024.105563] [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: 08/22/2023] [Revised: 11/14/2023] [Accepted: 01/29/2024] [Indexed: 02/03/2024]
Abstract
Bats have a long evolutionary history with trypanosomatids, but the role of these flying mammals on parasite transmission cycles in urban areas, especially for Trypanosoma and Leishmania species, remains poorly known. The objective of this study was to evaluate the species richness of trypanosomatids parasitizing a bat community in Campo Grande (CG), a state capital within the Cerrado of the Brazilian Midwest. We evaluated 237 bats of 13 species by means of hemoculture and molecular detection in spleen samples. The bat community of CG appears to participate in the transmission cycles of various species of trypanosomatids. We report an overall trypanosomatid detection rate of 34.2% (n = 81), involving 11 out of 13 sampled bat species. We identified six species of trypanosomatids from 61 bats by analyzing SSU rRNA and/or kDNA: Trypanosoma cruzi DTU TcI, T. c. marinkellei, T. dionisii, Leishmania infantum, L. amazonensis, and T. janseni, with this latter being detected by hemoculture for the first time in a bat species. We also detected a Molecular Operational Taxonomic Unit, Trypanosoma sp. DID, in the phyllostomids Glossophaga soricina and Platyrrhinus lineatus. The highest trypanosomatid richness was observed for Sturnira lilium, which hosted three species: L. infantum, T. dionisii and T. janseni. Given that visceral leishmaniasis is endemic in CG, special focus should be placed on L. infantum. Moreover, L. amazonensis and T. cruzi warrant attention, since these are zoonotic parasites responsible for human cases of tegumentary leishmaniasis and Chagas disease, respectively. In this respect, we discuss how bat communities may influence the Leishmania spp. transmission in endemic areas.
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Affiliation(s)
- Jaire Marinho Torres
- Universidade Católica Dom Bosco, Av. Tamandaré, 6000 - Jardim Seminário, Campo Grande, MS, Brazil
| | | | - Filipe Martins Santos
- Universidade Católica Dom Bosco, Av. Tamandaré, 6000 - Jardim Seminário, Campo Grande, MS, Brazil
| | - Nayara Yoshie Sano
- Universidade Católica Dom Bosco, Av. Tamandaré, 6000 - Jardim Seminário, Campo Grande, MS, Brazil
| | - Érica Verneque Martinez
- Universidade Federal de Mato Grosso do Sul, Cidade Universitária, Av. Costa e Silva s/n - Pioneiros, Campo Grande, MS, Brazil
| | - Fernanda Moreira Alves
- Laboratório de Biologia de Tripanossomatídeos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, Manguinhos Rio de Janeiro 4365, RJ, Brazil
| | - Luiz Eduardo Roland Tavares
- Universidade Federal de Mato Grosso do Sul, Cidade Universitária, Av. Costa e Silva s/n - Pioneiros, Campo Grande, MS, Brazil
| | - André Luiz Rodrigues Roque
- Laboratório de Biologia de Tripanossomatídeos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, Manguinhos Rio de Janeiro 4365, RJ, Brazil
| | - Ana Maria Jansen
- Universidade Católica Dom Bosco, Av. Tamandaré, 6000 - Jardim Seminário, Campo Grande, MS, Brazil; Laboratório de Biologia de Tripanossomatídeos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Av. Brasil, Manguinhos Rio de Janeiro 4365, RJ, Brazil
| | - Heitor Miraglia Herrera
- Universidade Católica Dom Bosco, Av. Tamandaré, 6000 - Jardim Seminário, Campo Grande, MS, Brazil
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da Silva ICO, Soares P, Malta L, Paiva F, Ferreira VL, de Oliveira CE, Tavares LER. New insights into a poorly known parasite, Dero lutzi (Oligochaeta: Naididae), associated with tree frogs of the genus Scinax: morphological evaluation and genotypic data. Rev Bras Parasitol Vet 2024; 33:e015323. [PMID: 38198362 PMCID: PMC10782506 DOI: 10.1590/s1984-29612024005] [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: 09/17/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024]
Abstract
The oligochaete Dero lutzi follows a life strategy that alternates between free-living periods in aquatic environments and endoparasitic phases. Most occurrences of D. lutzi in anurans are reported in species with arboreal habits, with studies limited to the recording of the oligochaete's presence in the host. Our study recovered specimens of D. lutzi from the tree frogs Scinax fuscovarius and Scinax. nasicus. We performed a morphological assessment of the parasite using light microscopy, for the first time, scanning electron microscopy. Molecular characterization of D. lutzi was carried out using the mitochondrial gene 16S rRNA and the nuclear gene 28S rRNA. Additionally, a phylogenetic tree was constructed to assess the species´position in relation to other group members. In our results, we confirmed the phenotypic morphological characteristics of the endoparasitic phase of D. lutzi. We also presented its phylogenetic position with other oligochaetes in the group, demonstrating the proximity between the endoparasite D. lutzi and the free-living oligochaete D. superterrenus.
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Affiliation(s)
- Isabela Caroline Oliveira da Silva
- Laboratório de Ciências Ambientais e Sustentabilidade Agropecuária, Universidade Católica Dom Bosco – UCDB, Campo Grande, MS, Brasil
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
| | - Priscilla Soares
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
- Laboratório de Pesquisa em Herpetologia, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
| | - Lennon Malta
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
| | - Fernando Paiva
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
| | - Vanda Lúcia Ferreira
- Laboratório de Pesquisa em Herpetologia, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
| | - Carina Elisei de Oliveira
- Laboratório de Ciências Ambientais e Sustentabilidade Agropecuária, Universidade Católica Dom Bosco – UCDB, Campo Grande, MS, Brasil
| | - Luiz Eduardo Roland Tavares
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul – UFMS, Campo Grande, MS, Brasil
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Pereira Bisaggio F, de Souza Malta L, Paiva F, Elisei C, Tavares LER. First assessment of the metazoan parasite community of Gymnogeophagus balzanii (Cichliformes: Cichlidae) from Pantanal wetlands, State of Mato Grosso do Sul, Brazill. J NAT HIST 2023. [DOI: 10.1080/00222933.2022.2161965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Affiliation(s)
- Felipe Pereira Bisaggio
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lennon de Souza Malta
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Fernando Paiva
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
| | - Carina Elisei
- Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
| | - Luiz Eduardo Roland Tavares
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
- Laboratório de Parasitologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil
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Veloso FP, Rodrigues FDS, Madureira RC, Piranda EM, Tavares LER, Paiva F. Raillietia auris (Mesostigmata: Raillietiidae) in cattle in the state of Mato Grosso do Sul, Brazil. Rev Bras Parasitol Vet 2022; 31:e003122. [PMID: 35674533 DOI: 10.1590/s1984-29612022032] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Parasitic otitis in cattle, caused by mites, has been reported from several continents. The present study aimed to determine the distribution, prevalence, intensity, mean intensity, and range of the agent in cattle in the state of Mato Grosso do Sul, Brazil. The samples were designed at random, with an acceptable margin of error of 3% and a confidence interval of 99%. A total of 449 animals were sampled immediately after slaughter from 34 different municipalities in the state using the technique of flushing both ear canals. Only Raillietia auris (Leidy, 1872) were found, with a prevalence of 98.6%, mean intensity of 53.78 mites/animal, and a range of 1-323. Impressively, the prevalence found was identical to another survey carried out 39 years ago in the same region. Details about the parasite intensity in different age categories of the animals are presented. The study demonstrates that the prevalence and intensity of infestation by Raillietia auris are high, and in older cattle are higher than young ones.
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Affiliation(s)
- Fernanda Paula Veloso
- Programa de Pós-graduação em Ciências Veterinárias, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Fernando de Souza Rodrigues
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | | | - Eliane Mattos Piranda
- Instituto de Biociências, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | | | - Fernando Paiva
- Instituto de Biociências, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
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Silva ICOD, Carvalho SSD, Ceron K, Santana DJ, Tavares LER. A case of Dipteran parasitism in Trachycephalus typhonius (Anura: Hylidae), with a summary of myiasis parasitism in anurans. Phyllomedusa 2019. [DOI: 10.11606/issn.2316-9079.v18i2p283-292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Pereira FB, Luque JL, Tavares LER. Integrative approach on Pharyngodonidae (Nematoda: Oxyuroidea) parasitic in reptiles: Relationship among its genera, importance of their diagnostic features, and new data on Parapharyngodon bainae. PLoS One 2018; 13:e0200494. [PMID: 29995964 PMCID: PMC6040771 DOI: 10.1371/journal.pone.0200494] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 06/27/2018] [Indexed: 11/18/2022] Open
Abstract
The first integrative approach using sequences of two genes (18S and 28S rRNA) plus morphological and life history traits, was explored in Pharyngodonidae nematodes parasitic in reptiles. Additionally, first genetic characterization of Parapharyngodon bainae and new data on its morphology are given. This approach evaluated the phylogenetic relationships among genera within Pharyngodonidae, as well as the importance of their diagnostic morphological features. Specimens of P. bainae were collected from faecal pellets of the lizard Tropidurus torquatus in the State of Minas Gerais, Brazil. Nematodes were fixed for scanning electron microscopy and molecular procedures. Morphological observations revealed the accurate structures of cephalic end, of cloacal region in males, of vulva and eggs. Phylogenetic reconstructions were based upon four datasets: aligned sequences of the 18S, of the 28S, of both concatenated genes and of combined morphological and molecular datasets. Bayesian inference and maximum likelihood were performed to infer the phylogenies of molecular datasets and maximum parsimony to infer that of all-combined data. Pharyngodonid parasites of reptiles seem to configure two general monophyletic lineages, as previously assertions. Results also showed the monophyly of Spauligodon, Skrjabinodon and Parapharyngodon, as well as the clear separation between the latter and Thelandros. Combination of datasets improved nodal supports. Analysis of the all-combined datasets revealed the importance of vulval position and egg morphology as phylogenetic informative traits. However, characters of male caudal morphology appear as are highly homoplastic, and seem to be product of convergent evolution or multiple losses of ancestral traits. The closely-related Thelandros and Parapharyngodon are kept valid and their diagnosis should be based upon the position of the operculum in eggs (terminal or subterminal, respectively). Some inconsistencies in the scarce molecular and morphological databases were noted. Thus, new genetic data is required for further conclusions and current database must be evaluated with attention.
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Affiliation(s)
- Felipe Bisaggio Pereira
- Programa de Pós-Graduação em Biologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brasil
- * E-mail:
| | - José Luis Luque
- Departamento de Parasitologia Animal, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brasil
| | - Luiz Eduardo Roland Tavares
- Programa de Pós-Graduação em Biologia Animal, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Brasil
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Alves AM, Souza GTRE, Takemoto RM, Tavares LER, Melo CMD, Madi RR, Jeraldo VDLS. Occurrence of larvae of trypanorhynch cestodes in snappers (Lutjanidae) from northeast Brazil. Rev Bras Parasitol Vet 2018; 27:415-419. [PMID: 29846451 DOI: 10.1590/s1984-296120180019] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 01/29/2018] [Indexed: 06/08/2023]
Abstract
Three species of snappers from artisanal, small-scale fisheries were examined for the presence of parasites. A total of 139 lutjanid fish were collected: 69 specimens of Lutjanus analis, 47 specimens of Lutjanus vivanus, and 23 specimens of Lutjanus synagris. Encysted plerocercoid of trypanorhynch cestodes found at necropsy in the viscera of snappers were sampled for parasitological analysis. These plerocercoid larvae belong to the genera Floriceps, Pseudogrillotia , and Oncomegas. Although these parasites do not have any zoonotic potential, fish with heavy loads of plerocercoids are rejected during inspection as they compromise meat hygiene. Our findings suggest that light larval cestode infections in lutjanids would not lead to consumer rejection of the food product. The occurrence of Floriceps sp. in L. analis and in L. synagris, of Pseudogrillotia sp. in L. vivanus and in L. synagris , and of Oncomegas sp. in L. synagris are new findings in these fish species. These parasites are new to these fish species and have not been reported in snappers from the northeast coast of Brazil. The results contribute to the existing body of knowledge about the parasitic fauna of fish and its distribution along the coastline of Brazil.
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Affiliation(s)
- André Mota Alves
- Laboratório de Biologia Tropical, Instituto de Tecnologia e Pesquisa - ITP, Universidade Tiradentes - UNIT, Aracaju, SE, Brasil
| | | | - Ricardo Massato Takemoto
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Laboratório de Ictioparasitologia, Universidade Estadual de Maringá - UEM, Maringá, PR, Brasil
| | - Luiz Eduardo Roland Tavares
- Centro de Ciências Biológicas e da Saúde, Universidade Federal do Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Cláudia Moura de Melo
- Laboratório de Biologia Tropical, Instituto de Tecnologia e Pesquisa - ITP, Universidade Tiradentes - UNIT, Aracaju, SE, Brasil
| | - Rubens Riscala Madi
- Laboratório de Biologia Tropical, Instituto de Tecnologia e Pesquisa - ITP, Universidade Tiradentes - UNIT, Aracaju, SE, Brasil
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Galindo GM, Rodrigues RA, Marcondes SF, Soares P, Tavares LER, Fernandes CE. Morphological and morphometric features of nematode-cysts in Gymnotus inaequilabiatus liver in the Brazilian Pantanal. Rev Bras Parasitol Vet 2017; 26:285-291. [PMID: 28902262 DOI: 10.1590/s1984-29612017044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 06/02/2017] [Indexed: 06/07/2023]
Abstract
The aim of this study was to determine the morphometric measures and morphological aspects of nematode-cysts in Gymnotus inaequilabiatus, and the presence of melanomacrophage centers (MMCs) associated with the periphery of cysts and in the liver parenchyma. Adult specimens, 34 female (123.1 ± 43.9g) and 45 male (135.5 ± 43.4g), from Paraguay River, Corumbá, Brazil, were used. The number of nematode-cysts was determined in 79 livers and 25 of them randomly selected for histopathological analysis and morphometric measures of nematode-cysts (mean diameter, thickness of collagen layer, and cyst-wall layer). The percentage of cysts with MMCs on the periphery and density in the liver parenchyma was estimated. The average number of macroscopic cysts was of 48.7 ± 2.78. Granulomatous reaction was observed surrounding the cysts. Diameter, collagen layer and cyst-wall measurements were 293.0 ± 75.18 (µm), 17.72 ± 6.01 (µm) and 12.21 ± 9.51 (µm), respectively. The number of nematode-cysts was correlated with hepatosomatic index, (r=0.26, P<0.05). Collagen layer was correlated with cyst diameter (r=0.62, P<0.01). Pericystic and parenchymatous MMCs were moderately (r=0.48) and highly (r=0.90) correlated with nematode-cysts number. Morphological characteristics of hepatic tissue and cysts-nematodes measures suggest that G. inaequilabiatus acts as a paratenic host to nematodes in the larval stage.
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Affiliation(s)
- Gizela Melina Galindo
- Laboratório de Patologia Experimental, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Robson Andrade Rodrigues
- Laboratório de Patologia Experimental, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Sandriely Fernanda Marcondes
- Laboratório de Patologia Experimental, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Priscilla Soares
- Laboratório de Parasitologia Animal, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Luiz Eduardo Roland Tavares
- Laboratório de Parasitologia Animal, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
| | - Carlos Eurico Fernandes
- Laboratório de Patologia Experimental, Centro de Ciências Biológicas e da Saúde - CCBS, Universidade Federal de Mato Grosso do Sul - UFMS, Campo Grande, MS, Brasil
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Tavares LER, Campião KM, Costa-Pereira R, Paiva F. Helmintos endoparasitos de vertebrados silvestres em Mato Grosso do Sul, Brasil. Iheringia, Sér Zool 2017. [DOI: 10.1590/1678-4766e2017106] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RESUMO Uma lista de espécies de vertebrados silvestres e as espécies de helmintos endoparasitos associadas foi organizada para o estado de Mato Grosso do Sul. Foram encontrados registros de 291 espécies de helmintos endoparasitos, sendo 9 de Acanthocephala, 226 de Nematoda e 65 espécies de Platyhelminthes (23 de Cestoda e 42 de Trematoda) associadas a 20 espécies de peixes, nove de anfíbios, 17 de répteis, 103 de aves e 27 espécies de mamíferos. Apenas 12% dos vertebrados do estado foram estudados quanto a sua parasitofauna, ressaltando o quanto a biodiversidade de helmintos parasitos no estado ainda é subestimada.
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Rodrigues FDS, Tavares LER, Paiva F. Efficacy of treatments with toltrazuril 7.5% and lasalocid sodium in sheep naturally infected with Eimeria spp. Rev Bras Parasitol Vet 2016; 25:293-8. [DOI: 10.1590/s1984-29612016048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 05/12/2016] [Indexed: 11/21/2022]
Abstract
Abstract The objective of this study was to evaluate the efficacy of an experimental formulation of toltrazuril 7.5% + Trimix™ on a naturally acquired infection of Eimeria spp. in suckling lambs kept on pasture and, in another trial, evaluate the comparative efficacy between lasalocid and toltrazuril 7.5% + Trimix™ in newly weaned sheep under feedlot conditions that had been naturally infected with Eimeria spp. In the first experiment, 30 suckling lambs were divided into two groups: A - treated with toltrazuril 7.5% + Trimix™ and B- control. In experiment 2, 30 weaned sheep were divided into three groups: I - treated with toltrazuril 7.5% + Trimix™, II - treated with lasalocid and III - control. Treatment group A showed an efficacy of 90, 99.4 and 87.3% on days 5, 10 and 20, respectively. Treatment group I had an efficacy of 98.2, 92.6 and 94.5%, while group II had an efficacy of 72.7, 81.6 and 95.9% on days 7, 21 and 42, respectively. Eight Eimeria species were identified; E. ovinoidalis was the most common. Treatment with the toltrazuril 7.5% +Trimix ™ formulation was effective against Eimeria spp. in suckling lambs in field conditions and lambs weaned in under feedlot conditions.
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Costa-Pereira R, Araújo MS, Paiva F, Tavares LER. Functional morphology of the tetra fish Astyanax lacustris differs between divergent habitats in the Pantanal wetlands. J Fish Biol 2016; 89:1450-1458. [PMID: 27238590 DOI: 10.1111/jfb.13026] [Citation(s) in RCA: 4] [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] [Received: 07/08/2015] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
This study investigated whether the body morphology of the tetra fish Astyanax lacustris (previously Astyanax asuncionensis) varied between populations inhabiting one lagoon (a lentic, shallow environment, with great habitat complexity created by aquatic macrophytes) and an adjacent river (a deeper, lotic environment where aquatic macrophytes are scarce) in a seasonally flooded wetland, despite population mixing during the wet season. Morphological differences matched a priori predictions of the theory relating functional body morphology and swimming performance in fishes between lagoon and river habitats. Observed morphological variation could have resulted from adaptive habitat choice by tetras, predation by piscivores and adaptive phenotypic plasticity during development.
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Affiliation(s)
- R Costa-Pereira
- Programa de Pós Graduação em Ecologia & Biodiversidade, Universidade Estadual Paulista 'Julio de Mesquita Filho', Rio Claro, São Paulo, Brazil
| | - M S Araújo
- Departamento de Ecologia, Instituto de Biociências, Universidade Estadual Paulista 'Julio de Mesquita Filho', Rio Claro, São Paulo, Brazil
| | - F Paiva
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - L E R Tavares
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
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Campião KM, Ribas ACDA, Morais DH, da Silva RJ, Tavares LER. How Many Parasites Species a Frog Might Have? Determinants of Parasite Diversity in South American Anurans. PLoS One 2015; 10:e0140577. [PMID: 26473593 PMCID: PMC4608826 DOI: 10.1371/journal.pone.0140577] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 09/26/2015] [Indexed: 11/28/2022] Open
Abstract
There is an increasing interest in unveiling the dynamics of parasite infection. Understanding the interaction patterns, and determinants of host-parasite association contributes to filling knowledge gaps in both community and disease ecology. Despite being targeted as a relevant group for conservation efforts, determinants of the association of amphibians and their parasites in broad scales are poorly understood. Here we describe parasite biodiversity in South American amphibians, testing the influence of host body size and geographic range in helminth parasites species richness (PSR). We also test whether parasite diversity is related to hosts’ phylogenetic diversity. Results showed that nematodes are the most common anuran parasites. Host-parasite network has a nested pattern, with specialist helminth taxa generally associated with hosts that harbour the richest parasite faunas. Host size is positively correlated with helminth fauna richness, but we found no support for the association of host geographic range and PSR. These results remained consistent after correcting for uneven study effort and hosts’ phylogenic correlation. However, we found no association between host and parasite diversity, indicating that more diversified anuran clades not necessarily support higher parasite diversity. Overall, considering both the structure and the determinants of PRS in anurans, we conclude that specialist parasites are more likely to be associated with large anurans, which are the ones harbouring higher PSR, and that the lack of association of PSR with hosts’ clade diversification suggests it is strongly influenced by ecological and contemporary constrains.
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Affiliation(s)
- Karla Magalhães Campião
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal Paraná, Curitiba, Paraná, Brasil
- * E-mail:
| | | | - Drausio Honorio Morais
- UNESP—Universidade Estadual Paulista, Campus de Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, São Paulo, Brazil
| | - Reinaldo José da Silva
- UNESP—Universidade Estadual Paulista, Campus de Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, São Paulo, Brazil
| | - Luiz Eduardo Roland Tavares
- Departamento de Biologia, Universidade Federal do Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brasil
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Campião KM, de Aquino Ribas AC, Cornell SJ, Begon M, Tavares LER. Estimates of coextinction risk: how anuran parasites respond to the extinction of their hosts. Int J Parasitol 2015; 45:885-9. [PMID: 26432294 DOI: 10.1016/j.ijpara.2015.08.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Revised: 08/20/2015] [Accepted: 08/24/2015] [Indexed: 10/23/2022]
Abstract
Amphibians are known as the most threatened vertebrate group. One of the outcomes of a species' extinction is the coextinction of its dependents. Here, we estimate the extinction risk of helminth parasites of South America anurans. Parasite coextinction probabilities were modeled, assuming parasite specificity and host vulnerability to extinction as determinants. Parasite species associated with few hosts were the most prone to extinction, and extinction risk varied amongst helminth species of different taxonomic groups and life cycle complexity. Considering host vulnerability in the model decreased the extinction probability of most parasites species. However, parasite specificity and host vulnerability combined to increase the extinction probabilities of 44% of the helminth species reported in a single anuran species.
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Affiliation(s)
- Karla Magalhães Campião
- Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal do Paraná, Brazil.
| | | | - Stephen J Cornell
- Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Michael Begon
- Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
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Severo-Neto F, Tencatt LFC, Costa-Pereira R, Tavares LER. Fishes from Baía da Medalha, southern Pantanal, Brazil: A 20 years review. Biota Neotrop 2015. [DOI: 10.1590/1676-06032015011614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Located in the Pantanal of Miranda-Abobral, the Baía da Medalha is the largest pond close to the Base de Estudos do Pantanal of the Universidade Federal de Mato Grosso do Sul. The Baía da Medalha has been a study site for several didactic and scientific projects for years. Nevertheless, its fish fauna has never been inventoried. Based on data collected from the beginning of the 1990s up to 2011, we provide a list of fish species from the Baía da Medalha. A total of 97 species were recorded, corresponding to about 40% of the species stated for the Pantanal. Characiformes and Siluriformes were the most species-rich orders, being Characidae and Cichlidae the families with the highest number of species. Regional seasonal flood dynamics and the abundance of aquatic macrophytes may be associated with this high diversity. The representative richness found in this lagoon highlights the importance of such taxonomic surveys to preserve the diversity of aquatic habitats within the Pantanal ecosystem.
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Campião KM, Morais DH, Dias OT, Aguiar A, Toledo GDM, Tavares LER, Da Silva RJ. Checklist of Helminth parasites of Amphibians from South America. Zootaxa 2014; 3843:1-93. [PMID: 25082165 DOI: 10.11646/zootaxa.3843.1.1] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Indexed: 11/04/2022]
Abstract
Parasitological studies on helminths of amphibians in South America have increased in the past few years. Here, we present a list with summarized data published on helminths of South American amphibians from 1925 to 2012, including a list of helminth parasites, host species, and geographic records. We found 194 reports of helminths parasitizing 185 amphibian species from eleven countries: Argentina, Brazil, Chile, Colombia, Equador, French Guyana, Guyana, Paraguay, Peru, Uruguay and Venezuela. Helminth biodiversity includes 278 parasite species of the groups Acanthocephala, Nematoda, Cestoda, Monogenea and Trematoda. A list of helminth parasite species per host, and references are also presented. This contribution aims to document the biodiversity of helminth parasites in South American amphibians, as well as identify gaps in our knowledge, which in turn may guide subsequent studies.
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Affiliation(s)
- Karla Magalhães Campião
- Programa de Pós Graduação em Ecologia e Conservação, Universidade Federal de Mato Grosso do Sul, Centro de Ciências Biológi-cas e da Saúde, Cidade Universitária S/N, CEP 79070-900, Campo Grande, MS, Brazil;
| | - Drausio Honorio Morais
- UNESP-Univ Estadual Paulista, Campus Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, SP, Brazil; unknown
| | - Olívia Tavares Dias
- UNESP-Univ Estadual Paulista, Campus Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, SP, Brazil; unknown
| | - Aline Aguiar
- UNESP-Univ Estadual Paulista, Campus Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, SP, Brazil; unknown
| | - Gislayne De Melo Toledo
- UNESP-Univ Estadual Paulista, Campus Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, SP, Brazil; unknown
| | - Luiz Eduardo Roland Tavares
- Universidade Federal de Mato Grosso do Sul, Centro de Ciências Biológicas e da Saúde, Laboratório de Parasitologia Veterinária, Cidade Universitária S/N, CEP 79070-900, Campo Grande, MS, Brazil; unknown
| | - Reinaldo José Da Silva
- UNESP-Univ Estadual Paulista, Campus Botucatu, Instituto de Biociências, Departamento de Parasitologia, Botucatu, SP, Brazil; unknown
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Vicentin W, Vieira KRI, Tavares LER, Costa FEDS, Takemoto RM, Paiva F. Metazoan endoparasites of Pygocentrus nattereri (Characiformes: Serrasalminae) in the Negro River, Pantanal, Brazil. Rev Bras Parasitol Vet 2013; 22:331-8. [DOI: 10.1590/s1984-29612013000300003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 05/06/2013] [Indexed: 11/21/2022]
Abstract
In the period of October 2007 to August 2008, 152 specimens ofPygocentrus nattereri were caught in the Negro River in the Nhecolândia region, central Pantanal wetland, State of Mato Grosso do Sul, Brazil. The specimens were necropsied and a total of 4,212 metazoan endoparasites were recovered, belonging to 10 taxons:Procamallanus (Spirocamallanus)inopinatus, Philometridae gen. sp.,Eustrongylides sp., Brevimulticaecum sp.,Contracaecum sp. (Nematoda), Echinorhynchus paranensis (Acanthocephala), Leiperia gracile,Sebekia oxycephala, Subtriquetra sp. 1 andSubtriquetra sp. 2 (Pentastomida). This is the first record of two parasite species from P. nattereri: E. paranensis and L. gracile.
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Cançado PHD, Faccini JLH, Herrera HM, Tavares LER, Mourão GM, Piranda EM, Paes RCS, Ribeiro CCDU, Borghesan TC, Piacenti AK, Kinas MA, Santos CC, Ono TM, Paiva F. Host-Parasite Relationship of Ticks (Acari: Ixodidae and Argasidae) and Feral Pigs (Sus scrofa) in the Nhecolândia Region of the Pantanal Wetlands in Mato Grosso do Sul. ISRN Parasitol 2013; 2013:610262. [PMID: 27335855 PMCID: PMC4890957 DOI: 10.5402/2013/610262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 04/11/2013] [Indexed: 11/23/2022]
Abstract
Feral pigs (S. scrofa) were introduced to the Pantanal region around 200 years ago and the population appears to be in expansion. Its eradication is considered to be impossible. The population of feral pigs in the Pantanal wetlands is currently estimated at one million. Two scientific excursions were organized. The first was conducted during the dry season, when 21 feral pigs were captured and the second was during the wet season, when 23 feral pigs were captured. Ticks were collected and the oviposition and hatching process were studied to confirm the biological success of each tick species. Three tick species were found to be feeding on feral pigs: Amblyomma cajennense, A. parvum, and Ornithodoros rostratus. During the dry season, 178 adult A. cajennense were collected, contrasting with 127 A. cajennense specimens in the wet season. This suggests that the seasonality of these ticks in the Brazilian Pantanal wetlands could be different from other regions. The results indicate that A. parvum and A. cajennense are biologically successful parasites in relation to feral pigs. A. cajennense appears to have adapted to this tick-host relationship, as well as the areas where feral pigs are abundant, and could play a role in the amplification of this tick population.
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Affiliation(s)
- P H D Cançado
- Embrapa Beef Cattle, Av. Rádio Maia 830, 79002-970 Campo Grande, MS, Brazil
| | - J L H Faccini
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, 23890-000 Seropédica, RJ, Brazil
| | - H M Herrera
- Universidade Católica Dom Bosco, 79117-010 Campo Grande, MS, Brazil
| | - L E R Tavares
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, 79080-190 Campo Grande, MS, Brazil
| | - G M Mourão
- Brazilian Agricultural Research Corporation-CPAP, Wild Life Laboratory, 79320-900 Corumbá, MS, Brazil
| | - E M Piranda
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, 79080-190 Campo Grande, MS, Brazil
| | - R C S Paes
- Agência Estadual de Defesa Sanitária Animal e Vegetal de Mato Grosso do Sul-IAGRO, 79074-902 Campo Grande, MS, Brazil
| | - C C D U Ribeiro
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, 23890-000 Seropédica, RJ, Brazil
| | - T C Borghesan
- Programa de Pós-Graduação em Biologia da Relação Patógeno-Hospedeiro-ICB/USP, 05508-000 São Paulo, SP, Brazil
| | - A K Piacenti
- Programa de Pós-Graduação em Ciência Animal-UFMS, 79080-190 Campo Grande, MS, Brazil
| | - M A Kinas
- Programa de Pós-Graduação em Ecologia e Conservação-UFMS, 79080-190 Campo Grande, MS, Brazil
| | - C C Santos
- Associação de Proprietários de RPPN do MS, 79002 004 Campo Grande, MS, Brazil
| | - T M Ono
- Programa de Pós-Graduação em Ciência Animal-UFMS, 79080-190 Campo Grande, MS, Brazil
| | - F Paiva
- Centro de Ciências Biológicas e da Saúde, Universidade Federal de Mato Grosso do Sul, 79080-190 Campo Grande, MS, Brazil
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Almeida GD, Feliz DC, Heckler RP, Borges DGL, Onizuka MKV, Tavares LER, Paiva F, Borges FA. Ivermectin and moxidectin resistance characterization by larval migration inhibition test in field isolates of Cooperia spp. in beef cattle, Mato Grosso do Sul, Brazil. Vet Parasitol 2012; 191:59-65. [PMID: 22963710 DOI: 10.1016/j.vetpar.2012.08.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Revised: 08/08/2012] [Accepted: 08/14/2012] [Indexed: 10/28/2022]
Abstract
Ivermectin (IVM) resistance of Cooperia spp. in cattle has become an increasing and global problem. The early detection of anthelmintic resistance (AR) is important to propose strategies to slow down the development of resistance and requires sensitive, reliable, economic high-throughput and practical tests. The purpose of the present study was to apply a larval migration inhibition test (LMIT) for evaluating IVM and MOX efficacy against well-characterized field isolates of Cooperia spp. infecting cattle in Brazil. Eight isolates were used for IVM and seven for MOX. The following EC50 values of IVM were observed for the isolates: susceptible, 1.16 ηmol; Nova Alvorada do Sul I, 4.09 ηmol (RF=3.52); Campo Grande BNA, 3.57 ηmol (RF=3.07); Campo Grande TBR, 4.09 ηmol (RF=3,52); Nova Alvorada do Sul II, 2.50 ηmol (RF=2.15); Bandeirantes, 11.35 ηmol (RF=9.78); Campo Grande II, 6.03 ηmol (RF=5.20); and Porto Mortinho, 8.63 ηmol (RF=7.44). For MOX, the following EC50 values were observed: susceptible, 0.75 ηmol; Campo Grande BNA, 0.93 ηmol (RF=1.24); Campo Grande TBR, 0.36 ηmol (RF=0.48); Nova Alvorada do Sul II, 2.57 ηmol (RF=3.42); Bandeirantes, 1.43 ηmol (RF=1.90); Campo Grande II, 1.08 ηmol (RF=1.44); and Porto Mortinho, 0.49 ηmol (RF=0.65). The LMIT used in the present study can be a useful tool for in vitro evaluation of IVM, but not of MOX. However, such methodology cannot be used in large-scale studies yet. The isolates of Cooperia spp. showed various degrees of resistance to IVM, though remaining susceptible to MOX.
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Affiliation(s)
- G D Almeida
- Universidade Federal de Mato Grosso do Sul, UFMS, Campo Grande, MS 79070-900, Brazil
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de Pádua SB, Ishikawa MM, Ventura AS, Jerônimo GT, Martins ML, Tavares LER. Brazilian catfish parasitized by Epistylis sp. (Ciliophora, Epistylididae), with description of parasite intensity score. Parasitol Res 2012; 112:443-6. [PMID: 22890898 DOI: 10.1007/s00436-012-3069-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022]
Abstract
The determination of mean intensity of parasitism for colony-forming sessile protozoan such as Epistylis has been a great problem in parasitological studies. Some alternatives have been proposed by researchers for laboratory and field conditions. This study describes the criteria to establish the parasitic intensity score for epistylidid infestation in fish. Parasite distribution and the host-parasite relationship in four species of Brazilian cultured catfish and their hybrids are discussed. The highest prevalence rates were found in the hybrid jundiara, Leiarius marmoratus male × Pseudoplatystoma reticulatum female (96.4 %), followed by jurupoca, Hemisorubim platyrhynchos (60 %), and the hybrid surubim, Pseudoplatystoma corruscans male × P. reticulatum female (52.7 %). Positive correlation between parasitic intensity score and the fish size, weight, and relative condition factor were also observed. These findings indicate that Epistylis infestation in Brazilian catfish is an emerging disease in cultured fish.
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20
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Menezes RC, Santos SMCD, Ceccarelli PS, Tavares LER, Tortelly R, Luque JL. Tissue alterations in the pirarucu, Arapaima gigas, infected by Goezia spinulosa (Nematoda). Rev Bras Parasitol Vet 2011; 20:207-9. [DOI: 10.1590/s1984-29612011000300005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Accepted: 02/07/2011] [Indexed: 11/22/2022]
Abstract
Five specimens of Arapaima gigas caught in the Araguaia River (State of Mato Grosso, Brazil) were investigated for helminths in 2004. Numerous adult specimens of the rhapidascarid nematode Goezia spinulosa were found in stomach ulcers in all the specimens of A. gigas and were surrounded by thickening of the mucosa. The gastric glands of all the fish were necrotic and there was a severe and diffuse inflammatory reaction composed of eosinophils (which were predominant), lymphocytes and rare macrophages in the mucosa, submucosa and muscle layer. This is the first report of tissue lesion occurrences in this host, in the presence of G. spinulosa, and it confirms the high pathogenicity of this parasite species.
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Vicentin W, Vieira KRI, Costa FEDS, Takemoto RM, Tavares LER, Paiva F. Metazoan endoparasites of Serrasalmus marginatus (Characiformes: Serrasalminae) in the Negro River, Pantanal, Brazil. Rev Bras Parasitol Vet 2011; 20:61-3. [PMID: 21439234 DOI: 10.1590/s1984-29612011000100012] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Accepted: 04/19/2010] [Indexed: 11/22/2022]
Abstract
In order to inventory the metazoan endoparasites of Serrasalmus marginatus, 91 specimens were examined. They were captured in the Negro River in Pantanal wetland, State of Mato Grosso do Sul, Central-Western Brazil, from October 2007 to August 2008. Parasites of six taxa were recovered: Procamallanus (Spirocamallanus) inopinatus, Contracaecum sp. (Nematoda), metacercarial type Diplostomulum (Digenea), Brevimulticaecum sp. (Nematoda) and Sebekia oxycephala, Subtriquetra sp. 1 and Subtriquetra sp. 2 (Pentastomida). The latter five species are reported for the first time in S. marginatus.
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Affiliation(s)
- Wagner Vicentin
- Universidade Federal de Mato Grosso do Sul, Campo Grande, Brazil.
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Naldoni J, Arana S, Maia AAM, Silva MRM, Carriero MM, Ceccarelli PS, Tavares LER, Adriano EA. Host-parasite-environment relationship, morphology and molecular analyses of Henneguya eirasi n. sp. parasite of two wild Pseudoplatystoma spp. in Pantanal Wetland, Brazil. Vet Parasitol 2010; 177:247-55. [PMID: 21237571 DOI: 10.1016/j.vetpar.2010.12.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Revised: 12/02/2010] [Accepted: 12/07/2010] [Indexed: 10/18/2022]
Abstract
A new myxosporean species, Henneguya eirasi n. sp., is described parasitizing the gill filaments of Pseudoplatystoma corruscans and Pseudoplatystoma fasciatum (Siluriformes: Pimelodidae) caught in the Patanal Wetland of the state of Mato Grosso, Brazil. The parasite formed white, elongated plasmodia measuring up to 3mm. Mature spores were ellipsoidal in the frontal view, measuring 37.1 ± 1.8 μm in total length, 12.9 ± 0.8 μm in body length, 3.4 ± 0.3 μm in width, 3.1 ± 0.1 μm in thickness and 24.6 ± 2.2 μm in the caudal process. Polar capsules were elongated and equal in size, measuring 5.4 ± 0.5 μm in length and 0.7 ± 0.1 μm in width. Polar filaments had 12-13 coils. Histopathological analysis revealed that the parasite developed in the sub-epithelial connective tissue of the gill filaments and the plasmodia were surrounded by a capsule of host connective tissue. The plasmodia caused slight compression of the adjacent tissues, but no inflammatory response was observed in the infection site. Ultrastructure analysis revealed a single plasmodial wall connected to the ectoplasmic zone through numerous pinocytotic canals. The plasmodial wall exhibited numerous projections and slightly electron-dense material was found in the ectoplasm next to the plasmodial wall, forming a line just below the wall. Partial sequencing of the 18S rDNA gene of H. eirasi n. sp. obtained from P. fasciatum resulted in a total of 1066 bp and this sequence did not match any of the Myxozoa available in the GenBank. Phylogenetic analysis revealed the Henneguya species clustering into clades following the order and family of the host fishes. H. eirasi n. sp. clustered alone in one clade, which was the basal unit for the clade composed of Henneguya species parasites of siluriform ictalurids. The prevalence of the parasite was 17.1% in both fish species examined. Parasite prevalence was not influenced by season, host sex or host size.
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Affiliation(s)
- J Naldoni
- Departamento de Parasitologia da Universidade Estadual de Campinas-(UNICAMP), Caixa Postal 6109, CEP 13083-970, Campinas, SP, Brazil
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Vieira KRI, Vicentin W, Paiva F, Pozo CF, Borges FA, Adriano EA, Costa FES, Tavares LER. Brevimulticaecum sp. (Nematoda: Heterocheilidae) larvae parasitic in freshwater fish in the Pantanal wetland, Brazil. Vet Parasitol 2010; 172:350-4. [PMID: 20684864 DOI: 10.1016/j.vetpar.2010.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2010] [Revised: 04/12/2010] [Accepted: 05/04/2010] [Indexed: 11/27/2022]
Abstract
During the study of metazoan parasites of freshwater fish in the Pantanal wetland (state of Mato Grosso do Sul, Brazil), third-stage larvae of Brevimulticaecum sp. were collected from the abdominal cavity, liver parenchyma, mesentery, skeletal muscles and stomach wall of the following species: Gymnotus inaequilabiatus, Hemisorubim platyrhynchos, Hoplias aff. malabaricus, Myleus levis, Pseudoplatystoma corruscans, Pygocentrus nattereri, Serrasalmus marginatus and Sorubim lima. The larvae exhibited the main characteristics of the genus Brevimulticaecum, such as short ventricular appendices and the position of excretory pore and excretory nucleus. This is the first report and description of larval specimens of Brevimulticaecum parasitic in these hosts, which are fish species distributed throughout South America.
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Affiliation(s)
- K R I Vieira
- Programa de Pós-graduação em Ecologia e Conservação, Universidade Federal do Mato Grosso do Sul, Cidade Universitária, Campo Grande, MS, Brazil
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Tavares LER, Luque JL, Bicudo AJA. Community ecology of metazoan parasites of the anchovy Anchoa tricolor (Osteichthyes: Engraulidae) from the coastal zone of the State of Rio de Janeiro, Brazil. BRAZ J BIOL 2005; 65:533-40. [PMID: 16341432 DOI: 10.1590/s1519-69842005000300019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Between October 2001 and March 2002, 103 specimens of A. tricolor from Angra dos Reis (23°01'S, 44°19'W), in the coastal zone of the State of Rio de Janeiro, Brazil, were analyzed in order to study their metazoan parasite infracommunities. Ten species of metazoan parasites were collected: 4 digeneans, 1 cestode, 1 acantocephalan, 2 nematodes, 1 copepod, and 1 hirudinean; 77.7% of the fishes were parasitized by one or more metazoan, with a mean of 3.5 ± 6.2 parasite/fish. Digenean was the most dominant with 4 species that accounted for 53.2% of the total parasites collected; Ergasilus sp. was the most abundant species. Abundance and prevalence of Parahemiurus merus (Linton, 1910) were positively correlated with the total length of host. Relationships between total body length of fish and both total parasite abundance and mean parasite species richness were observed. Mean parasite diversity of species was correlated to host's total length, with significant differences found between male and female fishes. Two pairs of larval species showed significant positive association and covariation. The metazoan parasite infracommunities of A. tricolor presented dominance of larval endoparasites; correlation of parasite abundance, diversity, and species richness with host total length; and low number of parasite interspecific relationships. The parasite community of A. tricolor showed some similarities with the parasite community of another South American Atlantic engraulid.
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Affiliation(s)
- L E R Tavares
- Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, Brazil
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Tavares LER, Luque JL. Community ecology of metazoan parasites of the later juvenile common snook Centropomus undecimalis (Osteichthyes: Centropomidae) from the coastal zone of the state of Rio de Janeiro, Brazil. BRAZ J BIOL 2004; 64:523-9. [PMID: 15622849 DOI: 10.1590/s1519-69842004000300015] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Between April and December 2000, seventy-nine specimens of Centropomus undecimalis from Angra dos Reis, coastal zone of the State of Rio de Janeiro (23º01'S, 44º19'W), Brazil, were necropsied to study their infracommunities of metazoan parasites. Nine species of metazoan parasites were collected: 1 digenean, 1 monogenean, 1 acantocephalan, 1 nematode, 4 copepods, and 1 isopod, and 96.2% of the fishes were parasitized by one or more metazoan, with mean of 85.3 ± 122.9 parasite/fish. The digenean Acanthocollaritrema umbilicatum Travassos, Freitas & Bührnheim represented the majority of the parasites specimens collected, totaling, 94.7%. This species was the most abundant, prevalent, and dominant, showing positive correlation with the host's total body length and parasite abundance. The copepod species Acantholochus unisagittatus Tavares & Luque presented differences in abundance in relation to sex of host. The mean diversity in the infracommunities of C. undecimalis was H = 0.095 ± 0.116, with no correlation with the host's total body length but correlated with the host's sex. No pair of parasite species showed positive or negative association or covariation. The dominance of digenean A. umbilicatum in the later juvenile common snook parasite community could be related with the predatory food habits of common snook and an apparent feeding transition period which might occasion great exposure to infective forms.
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Affiliation(s)
- L E R Tavares
- Curso de Pós-graduação em Ciências Veterinárias, Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, C.P. 74508, CEP 23851-970 Seropédica, RJ, Brazil
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Tavares LER, Luque JL, Bicudo AJA. Metazoan parasites of Brazilian menhaden Brevoortia aurea (Spix & Agassiz, 1829) (Osteichthyes: Clupeidae) from the coastal zone of the state of Rio de Janeiro, Brazil. BRAZ J BIOL 2004; 64:553-4. [PMID: 15622853 DOI: 10.1590/s1519-69842004000300019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- L E R Tavares
- Curso de Pós-graduação em Ciências Veterinárias, Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, C.P. 74508, CEP 23851-970 Seropédica, RJ, Brazil
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