Parasitas em ostras de cultivo (Crassostrea rhizophorae e Crassostrea gigas) da Ponta do Sambaqui, Florianópolis, SC

Sabry, Rachel Costa; Magalhães, Aimê Rachel Magenta

doi:10.1590/s0102-09352005000800010

Cited by 32 publications

(49 citation statements)

References 11 publications

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“…According to Lauckner (1983), this cestode completes its life cycle in elasmobranchs, and is more common in tropical and subtropical regions. Previous studies involving C. rhizophorae indicate the digestive gland as the major site of occurrence of this parasite (NASCIMENTO et al, 1986;MAGALHÃES, 2005;SABRY et al, 2007); also, all studies showed encapsulation with intense hemocyte infiltration and in some cases, as in the present study, resorption. The same responses were observed in Tapes semidecussata Reeve, 1864 (Veneridae) (CHENG; RIFKIN, 1968) in Hawaii, and in C. virginica (WINSTEAD et al, 2004) in Florida.…”

Section: Discussionsupporting

confidence: 83%

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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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Section: Discussionsupporting

confidence: 83%

“…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 very likely compromises the functioning of this organ, interfering with feeding. High prevalence of these gregarines were also found in M. guyanensis elsewhere on the Brazilian coast (Azevedo and Matos, 1999;Pinto and Boehs, 2008), as well as in the mussel Perna perna (L., 1758) (Lima et al, 2001) and the mangrove oyster Crassostrea rhizophorae (Guilding, 1828) (Nascimento et al, 1986;Sabry and Magalhães, 2005;Sabry et al, 2007), but none of these studies noted serious damage caused by this parasite. This contrasts with the situation observed in Cerastoderma edule (L., 1758) by Azevedo and Cachola (1992), who attributed massive study confirms that bivalves can serve as primary and secondary intermediate hosts at the same time, as previously reported (Paperna, 1995).…”

Section: Discussionmentioning

confidence: 99%

“…Various viruses, bacteria, protists, fungi, and metazoans can parasitise molluscs, often affecting their health and endangering their survival. According to information obtained in several studies (Narchi, 1966;Umiji et al, 1976;Nascimento et al, 1986;Azevedo and Matos, 1999;Boehs and Magalhães, 2004;Sabry and Magalhães, 2005;Sabry et al, 2007;Garcia and Magalhães, 2008;Pinto and Boehs, 2008;Da Silva et al, 2009;Boehs et al, 2010), the most common parasites of the molluscs of economic interest from the Brazilian coast are gregarines of the genus Nematopsis, which use bivalves as intermediate hosts and complete their life cycle in crustaceans (Lauckner, 1983); digeneans, which also use molluscs as intermediate hosts; and the polychaete ECOLOGY Polydora websteri Hartman, 1943 (Spionidae), which occurs mainly in oysters of the genus Crassostrea.…”

Section: Introductionmentioning

confidence: 99%

Parasites of the mangrove mussel Mytella guyanensis (Bivalvia: Mytilidae) in Camamu Bay, Bahia, Brazil

Ceuta

Boehs

2012

Braz. J. Biol.

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This contribution reports the parasites found in the mangrove mussel Mytella guyanensis in Camamu Bay, Bahia, Brazil. Samples were collected monthly from September 2006 through October 2007. A total of 460 individuals were collected, fixed in Davidson's solution, and processed by standard histological techniques, and the sections were stained with Harris hematoxylin and eosin (H&E). The water temperature ranged from 23.5 to 31.6 °C, and the salinity from 25 to 37‰. Microscopic analysis showed Rickettsia-like organisms (RLOs), Nematopsis sp. (Apicomplexa), and Platyhelminthes, including a turbellarian, sporocysts of Bucephalus sp., metacercariae, and metacestodes of Tylocephalum sp. Parasites were observed mainly in the gills, mantle, and digestive gland. The prevalence of Nematopsis sp. was 100%, and in heavily infected mussels the tissues of the labial palps were damaged. RLOs occurred in high prevalence and intensity of infection in some periods. The digenean sporocysts showed moderate prevalence but high intensity of infection, and caused parasitic castration. In general, there was no significant spatial or temporal variation (p > 0.05) of the parasites, which is probably attributable to the small variations of temperature and salinity in the region.Keywords: mollusc health, Northeastern Brazil, Rickettsia, Nematopsis, Bucephalus. Parasitos do marisco-do-mangue, Mytella guyanensis

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“…websteri. Additionally, it is un certain whether P. websteri in Brazil (Sabry & Magalhães 2005) should be referred to P. haswelli (see Rada shevsky et al 2006). Thus the records considered here of P. websteri may actually represent several species.…”

Section: Problems With Taxonomymentioning

confidence: 99%

Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success

Simon¹,

Sato-Okoshi²

2015

Aquacult. Environ. Interact.

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Species of the Polydora-complex (i.e. polydorids) are the most common shell-boring polychaetes found on cultured molluscs. However, which species become problematic depend on their ability to reach mollusc farms and flourish under culture conditions. We therefore hypothesise that the planktonic larval phases of pest polydorids on molluscs grown on-shore will be short (as is typical of adelphophagic larvae, which can maintain large local populations) while those of polydorids on molluscs grown off-shore will be long (as is typical of planktotrophic larvae, which can disperse long distances to farms). Principal component and discriminant analyses of information extracted from the literature partly supported this hypothesis by identifying larval developmental mode and pest species as contributing more to pest status than host species and culture mode, with differential influence on pest status in different situations and potential bias through incorrect identification of polydorid species. χ 2 analyses confirmed that pest status depended on host culture method and pest larval mode. Pest polydorids producing adelphophagic larvae in on-shore systems may reflect the development of large local populations on hosts with culture periods > 2 yr. The many records of pests in off-shore and near-shore systems with pest species producing planktotrophic larvae may reflect shorter host culture periods and the higher incidence of planktotrophy among polydorid species in general. Polydora websteri, P. uncinata, P. hoplura and P. haswelli are the most frequently recorded and widespread pest species globally, although the taxonomy of these and shell-boring P. ciliata and Boccardia polybranchia need to be clarified. The positive relationships between the numbers of alien shell-borers and pests, and the number of hosts cultured per country confirm that mollusc aquaculture is an important vector and reservoir of alien pest polychaetes.

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Parasitas em ostras de cultivo (Crassostrea rhizophorae e Crassostrea gigas) da Ponta do Sambaqui, Florianópolis, SC

Abstract: Parasitas em ostras de cultivo (Crassostrea rhizophorae e Crassostrea gigas)da Ponta do Sambaqui, Florianópolis, SC

Cited by 32 publications

References 11 publications

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

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

Parasites of the mangrove mussel Mytella guyanensis (Bivalvia: Mytilidae) in Camamu Bay, Bahia, Brazil

Polydorid polychaetes on farmed molluscs: distribution, spread and factors contributing to their success

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