Simbiontes associados com Anomalocardia brasiliana (Gmelin) (Mollusca, Bivalvia, Veneridae) na Ilha de Santa Catarina e região continental adjacente, Santa Catarina, Brasil

Boehs, Guisla; Magalhães, Aimê Rachel Magenta

doi:10.1590/s0101-81752004000400021

Cited by 29 publications

(38 citation statements)

References 11 publications

(11 reference statements)

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“…Nascimento et al (1986), also concluded that damages caused by Tylocephalum in the oyster C. rhizophorae from Bahia State had only mechanical effects, caused by the entrance of this cestode into oyster tissues. According to the present study, larvae capsulation of Tylocephalum by fiber cells of the oysters (revealing a response of the host) is recorded in a number of papers (Cheng, 1975;Lauckner, 1983;Hine and Thorne, 2000;Boehs and Magalhães, 2004).…”

Section: Discussionmentioning

confidence: 64%

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First record of parasitism in the mangrove oyster Crassostrea rhizophorae (Bivalvia: Ostreidae) at Jaguaribe River estuary - Ceará, Brazil

2007

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Mangrove oysters Crassostrea rhizophorae were sampled monthly in the estuary of Jaguaribe River, on the east coast of Ceará State, Brazil, between August, 2000 and December, 2001, making up 170 individuals. The water temperature varied from 26 to 30 °C and salinity from 21 to 42‰. The animals' size ranged from 3.4 to 7.2 cm height. Macroscopical and histopathological analyses were carried out in the oysters' tissues. The histological exams showed protozoans and metazoans of genera Nematopsis and Tylocephalum, respectively. Nematopsis prevalence varied from 60 to 100% and it was higher in the gills and mantle. The oocysts presented a mean size of 11.5 µm (±1.32) length and 9.1 µm (±1.06) width (n = 30), up to 3 oocysts/phagocyte having been observed. Several animals presented focal hemocitical reaction.

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Section: Discussionmentioning

confidence: 64%

“…Nematopsis occurrence was recorded in C. rhizophorae (Nascimento et al, 1986), and in mussels Mytella guyanensis (Azevedo and Matos, 1999) and Perna perna (Lima et al, 2001). Metazoans of genus Tylocephalum were observed in C. rhizophorae (Nascimento et al, 1986) and in A. brasiliana (Boehs and Magalhães, 2004).…”

Section: Introductionmentioning

confidence: 99%

First record of parasitism in the mangrove oyster Crassostrea rhizophorae (Bivalvia: Ostreidae) at Jaguaribe River estuary - Ceará, Brazil

2007

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“…In all of these studies, a defense reaction was observed in the host, with formation of a fibrous capsule around the metacestode, without any damage to the host, because of the reabsorption process (ZEIDAN et al, 2012). The same responses were observed in other mollusks such as Tapes semidecussata (CHENG & RIFKIN, 1968), C. virginica (WINSTEAD et al, 2004), C. rhizophorae (SABRY & MAGALHÃES, 2005) and A. brasiliana and I. brasiliana (BOEHS & MAGALHÃES, 2004;BOEHS et al, 2010).…”

Section: Discussionmentioning

confidence: 72%

Parasites in the mangrove oyster Crassostrea rhizophorae cultivated in the estuary of the Graciosa River in Taperoá, Bahia

Cova

Júnior

Boehs

et al. 2015

Rev. Bras. Parasitol. Vet.

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Parasites in the mangrove oyster Crassostrea rhizophorae cultivated in the estuary of the Graciosa River in Taperoá, BahiaParasitos na ostra-do-mangue Crassostrea rhizophorae cultivada no estuário do rio Graciosa em Taperoá, Bahia AbstractIn this work, parasites associated with the mangrove oyster Crassostrea rhizophorae were studied at a cultivation unit in the estuary of the Graciosa River in Taperoá, Bahia. On a monthly basis, between April 2011 and March 2012, 20 oysters were collected, measured and fixed in 10% formaldehyde. In order to identify the parasites, routine histological techniques were used. The specimens were embedded in paraffin and sections, 7 µm thick, were cut. These were then stained with Harris hematoxylin and eosin and were examined using an optical microscope. The parameters analyzed to investigate water quality showed that the temperature ranged from 23.9 °C to 29.3 °C, water salinity from 0.4 to 24.2 Practical Salinity Units PSU and recorded rainfall from 80 mm to 406.4 mm/month. During the parasitological analyses, infestation of the polychaete Neanthes succinea was observed in 41% of the oysters. Through histological techniques, the following parasites were identified: colonies of Rickettsia-like organisms (RLOs); the protozoa Nematopsis sp. and Ancistrocoma sp.; the turbellarian Urastoma sp.; the metacestode Tylocephalum sp. and an unidentified tapeworm. The data collected showed that there was low-intensity infection with and prevalence of parasites, except for Nematopsis sp., thus attesting that these cultivated oysters were in a healthy condition.Keywords: Histology, protozoa, Nematopsis sp., Neanthes succinea, bivalves. ResumoNo presente trabalho, parasitos associados à ostra-do-mangue Crassostrea rhizophorae foram estudados em uma unidade de cultivo no estuário do rio Graciosa em Taperoá, Bahia. Mensalmente, entre abril de 2011 e março de 2012, 20 ostras foram coletadas, mensuradas e fixadas em formol a 10%. Para a identificação dos parasitos, foram utilizadas técnicas histológicas de rotina, com inclusão em parafina e obtenção de cortes com 7µm, corados com hematoxilina de Harris e eosina e examinados em microscopia de luz. Os parâmetros analisados para a qualidade da água mostraram que a temperatura variou de 23,9 °C a 29,3 °C, a salinidade de 0,4 a 24,2 PSU e a pluviometria de 80 mm a 406,4 mm/mês. Nas análises parasitológicas foram observadas infestações do poliqueta Neanthes succinea em 41% das ostras. A partir das técnicas histológicas foram identificados os seguintes parasitos: colônias de organismos assemelhados a Rickettsiae (RLOs); os protozoários Nematopsis sp. e Ancistrocoma sp.; o turbelário Urastoma sp.; o metacestóide Tylocephalum sp. e um platelminto não identificado. Os dados obtidos mostraram baixa intensidade de infecção e prevalência de parasitos, exceto para Nematopsis sp., atestando a boa condição de saúde das ostras no cultivo.

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“…has been reported to use different species of bivalves as an intermediate host (NASCIMENTO et al, 1986;MAGALHÃES, 2004;MAGALHÃES, 2005;SABRY et al, 2007;BOEHS et al, 2010;DA SILVA et al, 2011;. According to Lauckner (1983), this cestode completes its life cycle in elasmobranchs, and is more common in tropical and subtropical regions.…”

Section: Discussionmentioning

confidence: 99%

Parasites of economically important bivalves from the southern coast of Bahia State, Brazil

Zeidan

Luz

Boehs

2012

Rev. Bras. Parasitol. Vet.

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This study investigated the parasites of three commercially important bivalve species (Crassostrea rhizophorae, Mytella guyanensis and Lucina pectinata) from the southern coast of Bahia, Brazil. A total of 540 specimens were collected in August 2009 and February 2010, at three localities. The bivalve specimens were measured on their longest axis, opened, and macroscopically examined for the presence of parasites or signs of disease. They were then fixed in Davidson' solution and subjected to routine histological processing, with paraffin embedding and H&E staining; next, the specimens were examined under a light microscope. . Nematopsis sp. ocorreu em alta prevalência, porém, aparentemente, não causou danos aos bivalves. Bucephalus sp. causou destruição de tecidos, com castração, mas foi pouco prevalente. Os demais parasitos ocorreram em baixa prevalência e intensidade de infecção e sem causar danos.

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Simbiontes associados com Anomalocardia brasiliana (Gmelin) (Mollusca, Bivalvia, Veneridae) na Ilha de Santa Catarina e região continental adjacente, Santa Catarina, Brasil

Cited by 29 publications

References 11 publications

First record of parasitism in the mangrove oyster Crassostrea rhizophorae (Bivalvia: Ostreidae) at Jaguaribe River estuary - Ceará, Brazil

First record of parasitism in the mangrove oyster Crassostrea rhizophorae (Bivalvia: Ostreidae) at Jaguaribe River estuary - Ceará, Brazil

Parasites in the mangrove oyster Crassostrea rhizophorae cultivated in the estuary of the Graciosa River in Taperoá, Bahia

Parasites of economically important bivalves from the southern coast of Bahia State, Brazil

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