First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>

This is the first study that used species-specific DNA primers to confirm the presence of the heterophyid Ascocotyle (Phagicola) longa Ransom, 1920 in its first intermediate host. The larval stages (rediae and cercariae) of this parasite were morphologically and genetically identified in the gonad o...

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Detalles Bibliográficos
Autores principales: Alda, María del Pilar, Bonel, Nicolás, Panei, Carlos Javier, Cazzaniga, Néstor Jorge, Martorelli, Sergio Roberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Biología
Trematode
heterophyiasis
Parasite distribution
Cochliopidae
Bahía Blanca estuary
Argentina
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/136417
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-136417
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Trematode
heterophyiasis
Parasite distribution
Cochliopidae
Bahía Blanca estuary
Argentina
spellingShingle Biología
Trematode
heterophyiasis
Parasite distribution
Cochliopidae
Bahía Blanca estuary
Argentina
Alda, María del Pilar
Bonel, Nicolás
Panei, Carlos Javier
Cazzaniga, Néstor Jorge
Martorelli, Sergio Roberto
First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>
topic_facet Biología
Trematode
heterophyiasis
Parasite distribution
Cochliopidae
Bahía Blanca estuary
Argentina
description This is the first study that used species-specific DNA primers to confirm the presence of the heterophyid Ascocotyle (Phagicola) longa Ransom, 1920 in its first intermediate host. The larval stages (rediae and cercariae) of this parasite were morphologically and genetically identified in the gonad of the intertidal mud snail Heleobia australis (d'Orbigny, 1835) (Cochliopidae) in the Bahia Blanca estuary, Argentina. In addition, we asked whether the prevalence in H. australis varied between seasons. Mullets - the second intermediate host of this heterophyid - migrate in estuaries during the warmer seasons and it is expected that piscivorous birds and mammals - the definitive hosts - prey more intensively on this species at those times. Thus, the number of parasite eggs released into the tidal flat within their feces should be higher, thereby increasing the ingestion of the parasite by H. australis.We therefore expected a higher prevalence of A. (P.) longa in H. australis in the Bahia Blanca estuary during spring and summer than autumn and winter. We found that 16 out of 2,744 specimens of H. australis had been infected with A. (P.) longa (total prevalence of 0.58%). Nonetheless, the prevalence showed no significant variation between seasons. Hence, we discuss an alternative scenario where the lack of seasonal changes might be mostly related to the permanent residence of definitive hosts in the estuary and not to the seasonal recruitment of mullets. Finally, we highlight the need for more experimental and comparative approaches in order to understand the diagnosis and geographical distribution of this worldwide heterophyid.
format Articulo
Articulo
author Alda, María del Pilar
Bonel, Nicolás
Panei, Carlos Javier
Cazzaniga, Néstor Jorge
Martorelli, Sergio Roberto
author_facet Alda, María del Pilar
Bonel, Nicolás
Panei, Carlos Javier
Cazzaniga, Néstor Jorge
Martorelli, Sergio Roberto
author_sort Alda, María del Pilar
title First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>
title_short First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>
title_full First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>
title_fullStr First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>
title_full_unstemmed First molecular identification of <i>Ascocotyle</i> (Phagicola) longa in its first intermediate host the mud snail <i>Heleobia australis</i>
title_sort first molecular identification of <i>ascocotyle</i> (phagicola) longa in its first intermediate host the mud snail <i>heleobia australis</i>
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/136417
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