SciELO - Scientific Electronic Library Online

 
vol.21 issue4Epidemiology of Oestrus ovis (Diptera: Oestridae) in sheep in Botucatu, State of São PauloRisk factors associated with Toxoplasma gondii seroprevalence in goats in the State of Paraíba, Brazil author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista Brasileira de Parasitologia Veterinária

On-line version ISSN 1984-2961

Abstract

ZEIDAN, Gabriela Calvi; LUZ, Mariane dos Santos Aguiar  and  BOEHS, Guisla. Parasites of economically important bivalves from the southern coast of Bahia State, Brazil. Rev. Bras. Parasitol. Vet. [online]. 2012, vol.21, n.4, pp.391-398. ISSN 1984-2961.  http://dx.doi.org/10.1590/S1984-29612012000400009.

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. No parasites were observed associated with L. pectinata. Rickettsia-like organisms (RLOs), Sphenophrya sp. (Ciliophora), Nematopsis sp. (Apicomplexa), Urastoma sp. (Turbellaria) and Bucephalus sp. (Digenea) were observed in both C. rhizophorae and M. guyanensis, as well as Ancistrocoma sp. (Ciliophora) and Tylocephalum sp. (Cestoda) in the former. A high prevalence of Nematopsis sp. was seen, but caused no apparent damage to the host. Bucephalus sp. caused the destruction of tissues, with castration, but showed low prevalence. The other parasites occurred in low prevalence and intensity, without causing significant damage.

Keywords : Crassostrea rhizophorae; Lucina pectinata; Mytella guyanensis; pathogens; bivalves; parasites.

        · abstract in Portuguese     · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License