Diversity of myxozoans (Cnidaria) infecting Neotropical fishes in southern Mexico
Por:
Alama-Bermejo, Gema, Hernandez-Orts, Jesus S., Garcia-Varela, Martin, Oceguera-Figueroa, Alejandro, Peckova, Hana, Fiala, Ivan
Publicada:
26 jul 2023
Categoría:
Multidisciplinary
Resumen:
Myxozoans are a unique group of microscopic parasites that infect mainly
fishes. These extremely reduced cnidarians are highly diverse and
globally distributed in freshwater and marine habitats. Myxozoan
diversity dimension is unknown in Mexico, a territory of an
extraordinary biological diversity. This study aimed to explore, for the
first time, myxozoan parasite diversity from fishes of the Neotropical
region of Mexico. We performed a large morphological and molecular
screening using host tissues of 22 ornamental and food fish species
captured from different localities of Veracruz, Oaxaca and Chiapas.
Myxozoan infections were detected in 90% of the fish species, 65% of
them had 1 or 2 and 35% had 3 and up to 8 myxozoan species. Forty-one
putative new species were identified using SSU rDNA phylogenetic
analyses, belonging to two main lineages: polychaete-infecting (5
species) and oligochaete-infecting (36 species) myxozoans; from those we
describe 4 new species: Myxidium zapotecus sp. n., Zschokkella
guelaguetza sp. n., Ellipsomyxa papantla sp. n. and Myxobolus zoqueus
sp. n. Myxozoan detection increased up to 6 x using molecular screening,
which represents 3.7 x more species detected than by microscopy. This
study demonstrated that Neotropical fishes from Mexico are hosts of a
multitude of myxozoans, representing a source of emerging diseases with
large implications for economic and conservation reasons.
Filiaciones:
Alama-Bermejo, Gema:
Division of Fish Health, University of Veterinary Medicine, Veterinärplatz 1, Vienna, 1210, Austria
Hernandez-Orts, Jesus S.:
Natural History Museum, London, Cromwell Road, London, SW7 5BD, United Kingdom
Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, Ceské Budejovice, 370 05, Czech Republic
Garcia-Varela, Martin:
Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
Oceguera-Figueroa, Alejandro:
Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
Peckova, Hana:
Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, Ceské Budejovice, 370 05, Czech Republic
Fiala, Ivan:
Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Branišovská 31, Ceské Budejovice, 370 05, Czech Republic
gold, Gold
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