Piscinoodinium pillulare (Schäperclaus, 1954) Lom, 1981 (Dinoflagellida) infection in cultivated freshwater fish from the Northeast region of São Paulo State, Brazil: parasitological and pathological aspects

Martins, Maurício Laterça; Moraes, Julieta Rodini Engrácia de; Andrade, Pedro de; Schalch, Sergio Henrique Canello; Moraes, Flávio Ruas de

doi:10.1590/s1519-69842001000400013

Cited by 32 publications

(34 citation statements)

References 10 publications

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“…However, the observed rates of infection were lower than those described for tambacu farmed in different regions other than the Brazilian Southeast (Tavares-Dias et al, 2001a;Schalch & Moraes, 2005), and were also lower than reports of P. mesopotamicus in the Central-West region (Sant'Ana et al, 2012), where this protozoan caused high mortality. Martins et al (2001) reported a mortality of 61.3% in the winter season (May-August) in the Southeast region, when water temperatures ranged from 17 to 24 o C. In the Central-West region, this protozoan occurred in winter and summer, and 100% of mortality was observed by Sant'Ana et al (2012). However, no mortality has been recorded in fish farmed in the Amazon region.…”

Section: Resultsmentioning

confidence: 99%

Parasitic fauna in hybrid tambacu from fish farms

Silva

Tavares‐Dias²,

Dias³

et al. 2013

Pesq. agropec. bras.

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-The objective of this work was to evaluate the parasitic fauna of hybrid tambacu (Colossoma macropomum x Piaractus mesopotamicus) from fish farms and the host-parasite relationship. A hundred and fourteen fish were collected from four fish farms in Macapá, in the state of Amapá, Brazil, 80.7% of which were infected by: Ichthyophthirius multifiliis (Ciliophora); Piscinoodinium pillulare (Dinoflagellida); Anacanthorus spatulatus, Notozothecium janauachensis, and Mymarothecium viatorum (Monogenoidea); Neoechinorhynchus buttnerae (Acanthocephala); Cucullanus colossomi (Nematoda); Perulernaea gamitanae (Lernaeidae); and Proteocephalidae larvae (Cestoda). A total of 8,136,252 parasites were collected from the examined fish. This is the first record of N. buttnerae, C. colossomi, N. janauachensis, M. viatorum, and Proteocephalidae for hybrid tambacu in Brazil. Ichthyophthirius multifiliis was the most prevalent parasite, whereas endohelminths were the less. A positive correlation was observed between number of I. multifiliis and total length and weight of fish, as well as between number of P. gamitanae and total length. The infection by I. multifiliis had association with the parasitism by Monogenoidea. Low water quality contributes to high parasitism of hybrid tambacu by ectoparasites, which, however, does not influence the relative condition factor of fish.Index terms: Colossoma macropomum, Ichthyophthirius multifiliis, Piaractus mesopotamicus, ectoparasite, native fish, host-parasite relationship. Parasitofauna no híbrido tambacu de pisciculturasResumo -O objetivo deste trabalho foi avaliar a parasitofauna de tambacu (Colossoma macropomum x Piaractus mesopotamicus) de pisciculturas e a relação parasito-hospedeiro. Cento e catorze peixes foram coletados de quatro pisciculturas de Macapá, AP, 80,7% dos quais estavam infectados por: Ichthyophthirius multifiliis (Ciliophora); Piscinoodinium pillulare (Dinoflagellida); Anacanthorus spatulatus, Notozothecium janauachensis e Mymarothecium viatorum (Monogenoidea); Neoechinorhynchus buttnerae (Acanthocephala), Cucullanus colossomi (Nematoda); Perulernaea gamitanae (Lernaeidae); e larvas de Proteocephalidae (Cestoda). Um total de 8.136.252 parasitos foram coletados dos peixes examinados. Esse é o primeiro registro de N. buttnerae, C. colossomi, N. janauachensis, M. viatorum e Proteocephalidae para híbridos tambacu no Brasil. Ichtyophthirius multifiliis foi o parasito mais prevalente, enquanto os endohelmintos, os menos. Observou-se correlação positiva entre número de I. multifiliis e comprimento total e peso corporal dos peixes, bem como entre número de P. gamitanae e comprimento total. A infeção por I. multifiliis mostrou associação com o parasitismo por Monogenoidea. A baixa qualidade da água contribui para o alto parasitismo do hibrido tambacu por ectoparasitas, que, no entanto, não influi no fator de condição relativo dos peixes.Termos para indexação: Colossoma macropomum, Ichthyophthirius multifiliis, Piaractus mesopotamicus, ectoparasita, peixe nativo, relação...

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Section: Resultsmentioning

confidence: 99%

Parasitic fauna in hybrid tambacu from fish farms

Silva

Tavares‐Dias²,

Dias³

et al. 2013

Pesq. agropec. bras.

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“…Leonardo et al (2001) alimentaram larvas de tilápias com diferentes níveis de vitamina C, e observaram hipertrofia e hiperplasia das células mucosas nos filamentos branquiais das larvas que não ingeriram vitamina C. Berntssen et al (1997) expuseram salmão atlântico (Salmo salar) em ambientes aquáticos com diferentes concentrações de alumínio e observaram um aumento do número de célu-las mucosas contendo mucinas ácidas na brânquia. Martins et al (2001) analisaram brânquias de várias espécies como tambacu híbrido, pacu, tambaqui, piauçu, tilápia e curimbatá infectado por parasitas (dinoflagelados), e constataram aumento da produção de muco em todas as espécies. Resultado semelhante quanto ao número de células mucosas foi encontrado por Dezfuli et al (2003), utilizando a espécie Abramis brama infectada por ectoparasitas (Ergasilus sieboldi).…”

Section: Discussionunclassified

Alterações do epitélio branquial e das lamelas de tilápias (Oreochromis niloticus) causadas por mudanças do ambiente aquático em tanques de cultivo intensivo

et al. 2009

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The behavior of the gill epithelium of tilapias cultured in tanks at different altitudes and interconnected with PVC pipes was analyzed. Gill filaments of four specimens from four tanks (T 1 , T 2 , T 3 e T 4 ) sequentially interconnected were submitted to histological routine to obtain 5-mm-thick cuts that were stained with HE or submitted to histochemistry reactions PAS + diastase solution or Alcian Blue pH 2.5 or Alcian Blue pH 1.0. Considering the intermediary, apical and basal regions of the filaments, the lamellar area was measured and the amount of mucous cells was counted. It was verified that oxygen, pH, and temperature decreased progressively as the water flew from one tank to another. Thus, an increase was realized of the amount of mucous cells and the lamellar area in T 2, as well as a progressive decrease of these measures on the tanks which received water from T 2 . Moreover, detachment of the gill epithelium, cellular hyperplasia in the interlamellar space, and telangectasias were observed in the fishes from T 2 , T 3 e T 4. It was concluded that the aquatic environment in tanks sequentially interconnected with PVC pipes suffers alterations from one tank to another, as that physico-chemical fluctuations reflect on the behavior of the gill epithelium through variations of the lamellar area and the amount of mucous cells.

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“…Moreover, the high stocking density causes food competition and lower utilization of dietary nutrients (Rotlland et al, 1997;Tort et al, 1996;Montero et al, 1999). Low water quality and inadequate handling also favour the reproduction of dinoflagellate Piscinoodinium pillulare (Schäperclaus, 1954) (Lom, 1981 and high mortalities of fishes (1,500 fishes/day for 15 days) were found in São Paulo State (Martins et al, 2001). Thus, the objective of this study was to evaluate the parasitological indexes of monogenoidea and dinoflagellate in the gills of P. mesopotamicus supplemented with trivalent chromium in diet during 90 days maintained in two different stocking densities.…”

Section: Introductionmentioning

confidence: 99%