Redescription and life cycle of the monorchiid Postmonorcheides maclovini Szidat, 1950 (Digenea) from the Southwestern Atlantic Ocean: Morphological and molecular data

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Bagnato, E (Author) Other; Gilardoni, C (Author) Other; Pina, S (Author) Other; Rodrigues, P (Author) ICBAS; Cremonte, F (Author) Other

Journal

Title: Parasitology International

Vol. 65

Pages: 44-49

ISSN: 1383-5769

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 5 Citations

Other information

Authenticus ID: P-00G-Q1F

DOI: 10.1016/j.parint.2015.09.008

Abstract (EN): The adult monorchiid, Postmonorcheides maclovini Szidat, 1950, digenean parasite of the Patagonian blennie Eleginops maclovinus (Cuvier) (Eleginopidae) from Puerto Deseado (47 degrees 45'S, 65 degrees 55' W), Argentina, was characterized and its life cycle elucidated. P. maclovinus is the only species of the genus Postmonorcheides, proposed by Szidat (1950) from Tierra del Fuego province (similar to 54 degrees S), Argentina. This digenean uses the Patagonian blennie as definitive host and the intertidal bivalve Lasaea adansoni (Gmelin) (Lasaeidae) as both first and second intermediate hosts (metacercariae encyst inside sporocysts), being the first record of this clam as intermediate host of trematode parasites. The cercaria may, in addition to encysting in the sporocyst, emerge and presumably infect other intermediate hosts. This is the second report of a monorchiid species with metacercariae encysting inside the sporocyst Adults were found parasitizing the fish stomach, pyloric caeca and intestine with a prevalence of 100%; sporocysts with cercariae and/or metacercariae were found parasitizing the gonad of the bivalve with a prevalence of 2.78%. The cercariae possess a well-developed tail and eye-spots are absent. The ITS1 sequence from the adult digeneans found in the Patagonian blennie, identified as P. maclovini, was found to be identical to the ITS1 sequences obtained both from sporocysts containing cercariae and encysted metacercariae found in L. adansoni.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6