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Title

Host specificity and metamorphosis of the glochidium of the freshwater mussel unio tumidiformis (Bivalvia: Unionidae)

AuthorsReis, Joaquim; Collares-Pereira, Maria Joao; Araujo, Rafael
Issue Date2014
PublisherCzechoslovak Academy of Sciences
CitationFolia Parasitologica 61(1): 81-89 (2014)
AbstractThe glochidium larvae of freshwater mussels of the family Unionidae need to find suitable hosts to attach themselves and metamorphose into free-living juveniles. The specificity of the host-parasite relationship was investigated for the Iberian Unio tumidiformis Castro, 1885 by means of experimental infections and also by analyzing naturally infected fish. The process of encapsulation of glochidia was studied using scanning electron microscopy. Unio tumidiformis has proven to be an unusual host-specific unionid mussel, apparently parasitizing only fish of the genus Squalius Bonaparte, 1837. Successful encapsulation or complete metamorphosis was observed in five fish taxa: S. aradensis (Coelho, Bogutskaya, Rodrigues et Collares-Pereira), S. caroliterti (Doadrio), S. pyrenaicus (Günther), S. torgalensis (Coelho, Bogutskaya, Rodrigues et Collares-Pereira) and S. alburnoides (Steindachner) complex (only for the nuclear hybrids with at least one copy of the S. pyrenaicus genome). Complete metamorphose was achieved in 6 to 14 days at mean temperatures ranging from 21.8 to 26.1 °C. The current study provides support for cell migration being the main force of cyst formation and shows the influence of potential host's genome in response to the infection process to determine the success of the metamorphosis ©Institute of Parasitology, Biology Centre ASCR.
URIhttp://hdl.handle.net/10261/125356
DOI10.14411/fp.2014.005
Identifiersdoi: 10.14411/fp.2014.005
issn: 0015-5683
Appears in Collections:(MNCN) Artículos
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