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dc.contributor.author
Gauna, Maria Cecilia
dc.contributor.author
Parodi, Elisa Rosalia
dc.contributor.author
Caceres, Eduardo Jorge
dc.date.available
2017-11-10T19:59:32Z
dc.date.issued
2009-12
dc.identifier.citation
Gauna, Maria Cecilia; Parodi, Elisa Rosalia; Caceres, Eduardo Jorge; Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina; Wiley; Phycological Research; 57; 4; 12-2009; 313-322
dc.identifier.issn
1322-0829
dc.identifier.uri
http://hdl.handle.net/11336/27941
dc.description.abstract
The occurrence of the epiphyte alga Pseudendoclonium submarinum Wille (Ulvophyceae) on Rhodymenia pseudopalmata (Lamouroux) Silva (Rhodophyta) is reported. The present study describes a first line of evidence of an epidemiological study conducted with the purpose of comparing both the prevalence and effects of algal epiphytic organisms in R. pseudopalmata in the Patagonian coasts of Argentina. P. submarinum infected approximately 80% of R. pseudopalmata thalli and the frequency of infection was variable in connection with different areas of the host's thalli: 42% of R. pseudopalmata fronds presented P. submarinum thalli in the basal region, which presented a severity degree of infection from low to high. The median region presented an average frequency of infection of 30% and minor susceptibility to colonization. The covering varied from 1% to 70% representing a low to moderate degree of colonization. The apical region presented a cover frequency of 28% and the level of infection varied between low to moderate. The developmental morphology and the growth dynamics of the epiphyte were also investigated under unialgal as well as bialgal culture conditions. In nature, thalli of P. submarinum on R. pseudopalmata never invaded internal tissues of the host. Vegetative thalli of P. submarinum were inoculated on fronds R. pseudopalmata. Experimental infections confirmed that P. submarinum thalli did not penetrate the host's fronds. P. submarinum swarmers showed the capacity of settlement on a host's fronds and developed an epiphytic monostromatic thallus. The results allowed us to suggest that P. submarinum uses the R. pseudopalmata thalli as a proper substrate, since Pseudendoclonium thalli complete the entire life cycle. Culture experiments revealed that P. submarinum could develop without the presence of the host and evidenced the nutritional independence, being the relationship in nature, probably triggered by an ecological advantage since fronds of R. pseudopalmata offer a suitable substratum.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Algal Epiphytism
dc.subject
Pseudendoclonium
dc.subject
Rhodymenia
dc.subject
Symbiosis
dc.subject.classification
Otras Ciencias Biológicas
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Epiphytic relationships of Pseudendoclonium submarinum Wille (Ulvophyceae) and Rhodymenia pseudopalmata (Rhodophyta) from the Patagonian coast of Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-11-03T19:03:20Z
dc.journal.volume
57
dc.journal.number
4
dc.journal.pagination
313-322
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Gauna, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
dc.description.fil
Fil: Parodi, Elisa Rosalia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional del Sur; Argentina
dc.description.fil
Fil: Caceres, Eduardo Jorge. Universidad Nacional del Sur. Departamento de Biología, Bioquímica y Farmacia. Laboratorio de Ficología y Micología; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
dc.journal.title
Phycological Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1440-1835.2009.00551.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/j.1440-1835.2009.00551.x/abstract
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