First record of Trypanosoma sp. (Protozoa: Kinetoplastida) in tuvira (Gymnotus aff. inaequilabiatus) in the Pantanal wetland, Mato Grosso do Sul State, Brazil

Pádua, Santiago Benites de; Ishikawa, Márcia Mayumi; Satake, Fabiana; Jerônimo, Gabriela Tomas; Pilarski, Fabiana

doi:10.1590/s1984-29612011000100019

Cited by 10 publications

(9 citation statements)

References 12 publications

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“…In marine and freshwater fish populations, Trypanosoma spp. maintain their life cycle by using hematophagous invertebrates as primary hosts, namely leech species, and subsequently fish populations (D' AGOSTO & SERRA-FREIRE, 1993;WOO, 1998;PÁDUA et al, 2011;HAYES et al, 2014;LEMOS et al, 2015). Trypanosoma spp.…”

Section: Discussionmentioning

confidence: 99%

Infections of Hypostomus spp. by Trypanosoma spp. and leeches: a study of hematology and record of these hirudineans as potential vectors of these hemoflagellates

Corrêa

Oliveira

Tavares‐Dias

et al. 2016

Rev. Bras. Parasitol. Vet.

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Among Kinetoplastida, the Trypanosoma is the genus with the highest occurrence infecting populations of marine fish and freshwater in the world, with high levels of prevalence, causing influences fish health and consequent economic losses, mainly for fish populations in situation stress. This study investigated infections of Hypostomus spp. by Trypanosoma spp. and leeches, as well as blood parameters of this host in the network of tributaries of the Tapajós River in the state of Pará, in the eastern Amazon region in Brazil. Of the 47 hosts examined, 89.4% were parasitized by Trypanosoma spp. and 55.4% also had leeches attached around the mouth. The intensity of Trypanosoma spp. increased with the size of the host, but the body conditions were not influenced by the parasitism. The number of red blood cells, and hemoglobin, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC), mean corpuscular hemoglobin (MCH), total number of leukocytes and thrombocytes showed variations and negative correlation with the intensity of Trypanosoma spp. in the blood of the hosts. The results suggest that the leeches were vectors of Trypanosoma spp. in Hypostomus spp.

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Section: Discussionmentioning

confidence: 99%

Infections of Hypostomus spp. by Trypanosoma spp. and leeches: a study of hematology and record of these hirudineans as potential vectors of these hemoflagellates

Corrêa

Oliveira

Tavares‐Dias

et al. 2016

Rev. Bras. Parasitol. Vet.

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“…During the infectious process on the host, asexual reproduction by cellular division was described in infected knifefish Gymnotus aff. inaequilabiatus (PÁDUA et al, 2011b). Tripomastigote, epimastigote, amastigote and several dividing flagellate forms were observed in the stomach of leech Batracobdella gemmata, vector of trypanosomiasis to the loricariid catfish Hypostomus punctatus (D' AGOSTO & SERRA-FREIRE, 1993).…”

Section: Life Cyclementioning

confidence: 99%

Protozoan infections in farmed fish from Brazil: diagnosis and pathogenesis

Martins

Cardoso

Marchiori

et al. 2015

Rev. Bras. Parasitol. Vet.

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The Phylum Protozoa brings together several organisms evolutionarily different that may act as ecto or endoparasites of fishes over the world being responsible for diseases, which, in turn, may lead to economical and social impacts in different countries. Apart from the recent advances for the diagnosis of fish diseases in Brazil, little is known on the protozoan parasites and their relationship with environment and host. This revision presents the most important protozoan parasites found in farmed fish from Brazil, not only with emphasis on its diagnosis, biology, transmission and host-parasite relationship, but also on some information that may be useful to researchers in determining the correct diagnosis in fish farms.Keywords: Fish parasites, disease, ciliate, dinoflagellate, pathogenicity. ResumoO filo Protozoa reúne diversos organismos evolutivamente distintos que podem atuar como ecto ou endoparasitos de peixes em todo o mundo, sendo responsáveis por doenças as quais, por sua vez, podem ocasionar impactos econômico e social nos diferentes países. Apesar dos recentes avanços no campo de diagnóstico de doenças em peixes no Brasil, ainda pouco se conhece sobre a fauna de protozoários parasitos de peixes e suas relações com o ambiente e hospedeiro. Esta revisão apresenta os mais importantes protozoários parasitos encontrados em peixes cultivados no Brasil, não apenas com ênfase no seu diagnóstico, biologia, transmissão e relação hospedeiro-parasito, mas também algumas informações que podem ser úteis para pesquisadores para o correto diagnóstico em pisciculturas.Palavras-chave: Parasitos de peixes, enfermidade, ciliado, dinoflagelado, patogenicidade.

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“…Trypanosoma are single celled flagellated protozoans that are generally found in the blood of vertebrates and can cause trypanosomiasis of fish, including fresh water fish (Smit et al 2004;Davies et al 2005;Padua et al 2011). Piscine trypanosomes are always transmitted by leeches (Woo 2006) and can be detected in the peripheral blood of various freshwater and marine fish species (Bruno et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Haematological response of snow barbell, Schizothorax plagiostomus Heckel, naturally infected with a new Trypanosoma species

Maqbool

Ahmed

2014

J Parasit Dis

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The present study deals with the description of a new piscine trypanosome species found infecting the fresh water fish Schizothorax plagiostomus Heckel from river Jhelum, Srinagar, J&K, India and evaluating the haematological parameters of the infected fish. Haematological examination of S. plagiostomus revealed 61.1 % infection with an intensity of 1-9 trypanosomes/100 RBC's. Small (26.9 ± 1.39 lm) and large (47.17 ± 3.50 lm) forms of the trypanosome were observed in light microscopy investigations, revealing the dimorphic nature of the species. The trypanosome species was found to be distinct from the other related dimorphic species in morphometric dimensions including cell length, cell breadth, kinetoplast index, flagellar index, and cytological peculiarities, respectively. The detailed descriptions of the two morphological forms found in the blood of S. plagiostomus are provided. Based on the geographical location, morphometrics, cytological peculiarities, host status and comparative study, the new species is named Trypanosoma kashmirensis n. sp. The parasitic infestation caused a significant decrease (p \ 0.05) in red blood cell counts, haematocrit and haemoglobin concentrations while, the leucocyte (WBC) count, mean cellular volume and mean cellular haemoglobin showed a significant increase (p \ 0.05) in the infected fish as compared to the non-infected. The above alterations of the haematological parameters could be used as an important tool for the indication of Trypanosoma infection in the fish.

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First record of Trypanosoma sp. (Protozoa: Kinetoplastida) in tuvira (Gymnotus aff. inaequilabiatus) in the Pantanal wetland, Mato Grosso do Sul State, Brazil

Cited by 10 publications

References 12 publications

Infections of Hypostomus spp. by Trypanosoma spp. and leeches: a study of hematology and record of these hirudineans as potential vectors of these hemoflagellates

Infections of Hypostomus spp. by Trypanosoma spp. and leeches: a study of hematology and record of these hirudineans as potential vectors of these hemoflagellates

Protozoan infections in farmed fish from Brazil: diagnosis and pathogenesis

Haematological response of snow barbell, Schizothorax plagiostomus Heckel, naturally infected with a new Trypanosoma species

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