<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The aim of this investigation was to identify the parasites present in the largely understudied pleasure oyster <italic>Crassostrea corteziensis</italic> in Sinaloa state in the northwestern Mexican Pacific coast. Inspection of twenty-eight oysters collected on “Ceuta” lagoon revealed the presence of the digenean <italic>Stephanostomum sp</italic>. (Digenea: Acanthocolpidae) cysts. Metacercariae were found encapsulated and embedded in the digestive gland and mantle tissue of oysters. The prevalence of infection revealed that 84.6 % were infected, the abundance was 13.62, with a mean intensity of 16.09 per host. The members of this genus are characterized by a double crown of spines in the cephalic region surrounding the buccal opening of the worm. Significantly, we report the first incidence of the digenean <italic>Stephanostomum</italic> sp of the family Acanthocolpidae parasitizing <italic>Crassostrea corteziensis</italic>. Further we report that this bivalve is now considered a new intermediate host, and the northwestern Mexican Pacific coast is a new geographical distribution area for this digenean. The findings contribute to our understanding of the biology, biodiversity and host preference of these parasites, with implications for health risks posed by human consumption of the pleasure oyster.</p></abstract>

The aim of this investigation was to identify the parasites present in the largely understudied pleasure oyster Crassostrea corteziensis in Sinaloa state in the northwestern Mexican Pacific coast. Inspection of twenty-eight oysters collected on “Ceuta” lagoon revealed the presence of the digenean Stephanostomum sp. (Digenea: Acanthocolpidae) cysts. Metacercariae were found encapsulated and embedded in the digestive gland and mantle tissue of oysters. The prevalence of infection revealed that 84.6 % were infected, the abundance was 13.62, with a mean intensity of 16.09 per host. The members of this genus are characterized by a double crown of spines in the cephalic region surrounding the buccal opening of the worm. Significantly, we report the first incidence of the digenean Stephanostomum sp of the family Acanthocolpidae parasitizing Crassostrea corteziensis. Further we report that this bivalve is now considered a new intermediate host, and the northwestern Mexican Pacific coast is a new geographical distribution area for this digenean. The findings contribute to our understanding of the biology, biodiversity and host preference of these parasites, with implications for health risks posed by human consumption of the pleasure oyster.

First record of <italic>Stephanostomum sp</italic>. Looss, 1899 (Digenea: Acanthocolpidae) metacercariae parasitising the pleasure oyster <italic>Crassostrea corteziensis</italic> (Hertlein) from the Mexican Pacific coast

Facultad de Ciencias del Mar, Universidad Autónoma de Sinaloa

Universidad Autónoma del Carmen, Facultad de Ciencias Naturales

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

First record of . Looss, 1899 (Digenea: Acanthocolpidae) metacercariae parasitising the pleasure oyster  (Hertlein) from the Mexican Pacific coast

The aim of this investigation was to identify the parasites present in the largely understudied pleasure oyster Crassostrea corteziensis in Sinaloa state in...

First record of Stephanostomum sp. Looss, 1899 (Digenea: Acanthocolpidae) metacercariae parasitising the pleasure oyster Crassostrea corteziensis (Hertlein) from the Mexican Pacific coast

Published Online: Jul 27, 2019

Page range: 211 - 218

Received: Oct 24, 2018

Accepted: Apr 10, 2019

DOI: https://doi.org/10.2478/helm-2019-0019

Keywords
bivalve, digenean, trematode, parasites, helminth, oysters, Mexico

© 2019 M. I. Grano-Maldonado et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

First record of Stephanostomum sp. Looss, 1899 (Digenea: Acanthocolpidae) metacercariae parasitising the pleasure oyster Crassostrea corteziensis (Hertlein) from the Mexican Pacific coast

Published Online: Jul 27, 2019

Page range: 211 - 218

Received: Oct 24, 2018

Accepted: Apr 10, 2019

DOI: https://doi.org/10.2478/helm-2019-0019

Keywordsbivalve, digenean, trematode, parasites, helminth, oysters, Mexico

© 2019 M. I. Grano-Maldonado et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
bivalve, digenean, trematode, parasites, helminth, oysters, Mexico