A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect

An unnamed microcercous cercaria (Digenea: Monorchiidae), a parasite of <i>Amiantis purpurata</i> (Lamarck, 1818) (Bivalvia: Veneridae) and its corresponding metacercaria from the province of Buenos Aires and the Patagonian coast of the Southwest Atlantic Ocean, are described. The cercar...

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Detalles Bibliográficos
Autores principales: Cremonte, Florencia, Kroeck, Marina Andrea, Martorelli, Sergio Roberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Naturales
Argentine Sea
Bivalvia
Cercaria
Digenea
Metacercaria
Monorchiidae
Veneridae
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83504
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83504
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Argentine Sea
Bivalvia
Cercaria
Digenea
Metacercaria
Monorchiidae
Veneridae
spellingShingle Ciencias Naturales
Argentine Sea
Bivalvia
Cercaria
Digenea
Metacercaria
Monorchiidae
Veneridae
Cremonte, Florencia
Kroeck, Marina Andrea
Martorelli, Sergio Roberto
A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
topic_facet Ciencias Naturales
Argentine Sea
Bivalvia
Cercaria
Digenea
Metacercaria
Monorchiidae
Veneridae
description An unnamed microcercous cercaria (Digenea: Monorchiidae), a parasite of <i>Amiantis purpurata</i> (Lamarck, 1818) (Bivalvia: Veneridae) and its corresponding metacercaria from the province of Buenos Aires and the Patagonian coast of the Southwest Atlantic Ocean, are described. The cercaria described in this paper differs from the three other monorchiid microcercous cercariae, i.e., <i>Lasiotocus minutus</i> (Manter, 1931), <i>Lasiotocus elongatus</i> (Manter, 1931), and <i>Cercaria caribbea</i> XXXVI Cable, 1956, mainly because of the extension of the excretory vesicle and the location of the ventral sucker. Cercariae artificially extracted from sporocysts encyst in a dish and form metacercariae enveloped by a gelatinous sac with two prolongations, which are used to adhere to the substratum. The monorchiid described in this paper has a life cycle similar to those of <i>L. minutus</i> and <i>L. elongatus</i>, although the adult stage of the present species is still unknown. Their larvae are similar in morphology and have venerid clams as their first hosts. The presence of a monorchiid larva is reported for the first time in the Southern Hemisphere. Its monthly prevalence rates, ranging from 0 to 25% (mean: 8.3%), are given from the Patagonian coast. The infection seems to cause castration as it was observed that during March through to May, when most gametes were produced in uninfected individuals, 81% of the infected individuals did not produce gametes.
format Articulo
Articulo
author Cremonte, Florencia
Kroeck, Marina Andrea
Martorelli, Sergio Roberto
author_facet Cremonte, Florencia
Kroeck, Marina Andrea
Martorelli, Sergio Roberto
author_sort Cremonte, Florencia
title A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
title_short A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
title_full A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
title_fullStr A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
title_full_unstemmed A new monorchiid cercaria (Digenea) parasitising the purple clam Amiantis purpurata (Bivalvia: Veneridae) in the Southwest Atlantic Ocean, with notes on its gonadal effect
title_sort new monorchiid cercaria (digenea) parasitising the purple clam amiantis purpurata (bivalvia: veneridae) in the southwest atlantic ocean, with notes on its gonadal effect
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/83504
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