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Two new genera and species of avian schistosomes from Argentina with proposed recommendations and discussion of the polyphyletic genus Gigantobilharzia (Trematoda, Schistosomatidae)

Published online by Cambridge University Press:  04 February 2022

Eliana Lorenti Open the ORCID record for Eliana Lorenti [Opens in a new window] ,
Sara V. Brant Open the ORCID record for Sara V. Brant [Opens in a new window] ,
Carmen Gilardoni Open the ORCID record for Carmen Gilardoni [Opens in a new window] ,
Julia I. Diaz Open the ORCID record for Julia I. Diaz [Opens in a new window]  and
Florencia Cremonte Open the ORCID record for Florencia Cremonte [Opens in a new window]
Eliana Lorenti*
Affiliation:
Centro de Estudios Parasitológicos y de Vectores (CEPAVE, CCT-La Plata, UNLP) Calle 120 s/n, entre Av. 60 y calle 64, La Plata, Buenos Aires, Argentina
Sara V. Brant
Affiliation:
Museum of Southwestern Biology Division of Parasites MSC03 2020, Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA
Carmen Gilardoni
Affiliation:
Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (CCT CONICET-CENPAT), Bdv. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina
Julia I. Diaz
Affiliation:
Centro de Estudios Parasitológicos y de Vectores (CEPAVE, CCT-La Plata, UNLP) Calle 120 s/n, entre Av. 60 y calle 64, La Plata, Buenos Aires, Argentina
Florencia Cremonte
Affiliation:
Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (CCT CONICET-CENPAT), Bdv. Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina
*
Author for correspondence: Eliana Lorenti, E-mail: lorenti@cepave.edu.ar
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Abstract

Gigantobilharzia Odhner, 1910 (Schistosomatidae) includes species that parasitize several orders of birds and families of gastropods from both freshwater and marine environments worldwide. Due to their delicate bodies, most of the species descriptions are incomplete, and lumped in the genus Gigantobilharzia, in some cases despite major morphological variability. Only three of those species have molecular sequence data but then lack a robust morphological description, making species differentiation very difficult. For this reason, several authors consider that many of the species of Gigantobilharzia should be reassigned to new genera. The aim of this paper is to describe two new genera and two new species of schistosomes using morphological and molecular characterization. We described Marinabilharzia patagonense n. g., n. sp. parasitizing Larus dominicanus from north Patagonian coast, and Riverabilharzia ensenadense n. g., n. sp. parasitizing L. dominicanus, Chroicocephalus maculipennis and Chroicocephalus cirrocephalus from freshwater Río de La Plata, in South America, Argentina. We then analysed and discussed the combinations of characters defining species of Gigantobilharzia and, based on that and on the available molecular data, we propose at least four possible new genera.

Keywords

ArgentinaGigantobilharziagullsMarinabilharzia patagonense n. g. n. spRiverabilharzia ensenadense n. g. n. spSchistosomatidae
Type
Research Article
Information
Parasitology , Volume 149 , Issue 5 , April 2022 , pp. 675 - 694
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press

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Footnotes

*

These authors contributed equally to this article

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