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Licensed Unlicensed Requires Authentication Published by De Gruyter December 28, 2016

Two new species of digeneans (Lecithasteridae and Haploporidae) of the intertidal blenny Scartichthys viridis (Valenciennes) from the central coast of Chile

Gabriela Muñoz, Mario George-Nascimento and Rodney A. Bray
From the journal Acta Parasitologica

Abstract

Two new digenean species are described from the intertidal blenny Scartichthys viridis (Valenciennes) (Blenniidae) collected off the coasts of Chile. The digenean Monorchimacradena viridis n. sp. (Lecithasteridae: Macradenininae) differs from the only known species described in the genus, M. acanthuri Nahhas and Cable 1964, in the presence of Drüsenmagen in the caeca, the location of the seminal vesicle between the testis and ovary (anterior to the testis in M. viridis n. sp.), and the pre-ovarian vitellarium. Megasolena littoralis n. sp. (Haploporidae), which is also reported from Scartichthys gigas (Steindachner), differs from the five valid species of Megasolena in that the post-caecal region (from the posterior edge of the caeca to the end of the body) is larger in M. viridis n. sp., meaning that the caeca are shortest in this species. Also, M. littoralis n. sp. is distinguished, from the other congeneric species, in a combination of characteristics, e.g., body length, suckers, pharynx, testes, hermaphroditic sac and sucker-length ratio. Sequences of ITS2 rDNA were generated for specimens of both species from various localities, indicating that it was invariant within the species. This study describes species of Monorchimacradena and Megasolena in Chilean waters, here reported for the first time off the Pacific Coast of South America.

Acknowledgments

We thank N. Leiva for providing data of digeneans from Antofagasta, northern Chile. This study was supported by the grant, Proyecto Regular Fondecyt 1130304, awarded to M.G-N.

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Received: 2016-7-27
Revised: 2016-9-23
Accepted: 2016-9-27
Published Online: 2016-12-28
Published in Print: 2017-3-1

© 2017 W. Stefański Institute of Parasitology, PAS