Three new species of Clinostomum Leidy, 1856 (Trematoda) from Middle American fish-eating birds
Por:
Sereno-Uribe A.L., García-Varela M., Pinacho-Pinacho C.D., Pérez-Ponce de León G.
Publicada:
1 jul 2018
Ahead of Print:
1 ene 2018
Resumen:
We recently engaged in a two-part study of Clinostomum Leidy, 1856
across a geographic range comprising central Mexico southwards to Costa
Rica, in Central America. In the first study, we investigated the
species boundaries by using DNA sequences of mitochondrial and nuclear
molecular markers, implementing several analytical tools and species
delimitation methods. The result of that approach revealed five highly
divergent genetic lineages that were interpreted as independent
evolutionary units, or species. Here, we present the second part of the
study, where we describe three of the five species for which we have
sexually mature adult specimens obtained from the mouth cavity of
fish-eating birds. Additionally, we characterise morphologically the
metacercariae of the other two species, collected from freshwater
fishes; these species cannot be formally described since no adults were
found in their definitive hosts. We further discuss the characters that
are more reliable for species identification within Clinostomum, such as
the cirrus sac shape and relative position with respect to testes and
ovary, the shape of the reproductive organs, and the diverticulated
condition of the caeca.
Filiaciones:
Sereno-Uribe A.L.:
Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Ap. Postal 70-153, C.P., México, Mexico
García-Varela M.:
Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Ap. Postal 70-153, C.P., México, Mexico
Pinacho-Pinacho C.D.:
Investigador Cátedra CONACyT, Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Km 2.5 Ant. Carretera a Coatepec, Xalapa, Veracruz, Mexico
Pérez-Ponce de León G.:
Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Ap. Postal 70-153, C.P., México, Mexico
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