A new Synthesium species (Digenea: Brachycladiidae) from the bottlenose dolphin Tursiops truncatus (Cetacea: Delphinidae) in Southwestern Atlantic waters

A new species of Synthesium from the bottlenose dolphin Tursiops truncatus in South Brazilian waters is described. Morphological and molecular identification was performed, and phylogenetic analyses were carried out using the ribosomal small subunit and internal transcribed spacer 1 and the mitochon...

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Bibliographic Details
Published in:Parasitology Research
Main Authors: Ebert, Mariana B., Mülller, Maria I., Marigo, Juliana, Valente, Ana L. S., Cremer, Marta J., da Silva, Reinaldo J.
Other Authors: Universidade Estadual Paulista (UNESP)
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Brachycladiidae
Molecular identification
Morphology
South Atlantic Ocean
Synthesium
Tursiops truncatus
Online Access:http://hdl.handle.net/11449/169540
https://doi.org/10.1007/s00436-017-5421-2
Description
Summary:A new species of Synthesium from the bottlenose dolphin Tursiops truncatus in South Brazilian waters is described. Morphological and molecular identification was performed, and phylogenetic analyses were carried out using the ribosomal small subunit and internal transcribed spacer 1 and the mitochondrial NDH dehydrogenase subunit 3 and cytochrome c oxidase subunit 1 genes. The main characteristics of the new species are the subterminal round-shaped oral sucker, the anterior distribution of vitellaria reaching the level of the ovary and the oval-shaped testes. The results obtained with the molecular markers supported the inclusion of the specimens into the genus Synthesium. The nucleotide divergence detected for the mitochondrial genes among the new species and others of the same genus supported the erection of a new species. This is the ninth species assigned to the genus and the third Synthesium species recorded in the South Atlantic Ocean.

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