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Title

Molecular phylogenetic analysis of the coccidian cephalopod parasites Aggregata octopiana and Aggregata eberthi (Apicomplexa: Aggregatidae) from the NE Atlantic coast using 18S rRNA sequences

AuthorsCastellanos-Martínez, Sheila ; Pérez-Losada, Marcos; Gestal, C.
KeywordsAggregata octopiana
Aggregata eberthi
Coccidia
Octopus vulgaris
Sepia officinalis
18S rRNA
Issue Date2013
PublisherElsevier
CitationEuropean Journal of Protistology 49(3): 373-380 (2013)
AbstractThe coccidia genus Aggregata is responsible for intestinal coccidiosis in wild and cultivated cephalopods. Two coccidia species, Aggregata octopiana, (infecting the common octopus Octopus vulgaris), and A. eberthi, (infecting the cuttlefish Sepia officinalis), are identified in European waters. Extensive investigation of their morphology resulted in a redescription of A. octopiana in octopuses from the NE Atlantic Coast (NW Spain) thus clarifying confusing descriptions recorded in the past. The present study sequenced the 18S rRNA gene in A. octopiana and A. eberthi from the NE Atlantic coast in order to assess their taxonomic and phylogenetic status. Phylogenetic analyses revealed conspecific genetic differences (2.5%) in 18S rRNA sequences between A. eberthi from the Ria of Vigo (NW Spain) and the Adriatic Sea. Larger congeneric differences (15.9%) were observed between A. octopiana samples from the same two areas, which suggest the existence of two species. Based on previous morphological evidence, host specificity data, and new molecular phylogenetic analyses, we suggest that A. octopiana from the Ria of Vigo is the valid type species.
Description8 páginas, 2 figuras, 1 tabla
Publisher version (URL)http://dx.doi.org/10.1016/j.ejop.2012.11.005
URIhttp://hdl.handle.net/10261/72711
DOI10.1016/j.ejop.2012.11.005
ISSN0932-4739
E-ISSN1618-0429
Appears in Collections:(IIM) Artículos
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