A new species and expanded distributions of freshwater Audouinella (Acrochaetiaceae, Rhodophyta) from Central Mexico and south-eastern Brazil

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorJiménez, Javier Carmona
dc.creatorNecchi Junior, Orlando
dc.date2014-05-20T15:25:27Z
dc.date2016-10-25T17:59:56Z
dc.date2014-05-20T15:25:27Z
dc.date2016-10-25T17:59:56Z
dc.date2001-08-01
dc.date.accessioned2017-04-05T23:52:28Z
dc.date.available2017-04-05T23:52:28Z
dc.identifierEuropean Journal of Phycology. Port Chester: Cambridge Univ Press, v. 36, n. 3, p. 217-226, 2001.
dc.identifier0967-0262
dc.identifierhttp://hdl.handle.net/11449/35877
dc.identifierhttp://acervodigital.unesp.br/handle/11449/35877
dc.identifier10.1080/09670260110001735368
dc.identifierWOS:000170916400002
dc.identifier2-s2.0-0034877888
dc.identifierhttp://dx.doi.org/10.1080/09670260110001735368
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/879506
dc.descriptionEighteen collections of red-coloured Audouinella from Central Mexico and southeastern Brazil detected three species. The most common species, A. eugenea, is characterized by macroscopic thalli, the erect system consisting of filaments with cylindrical cells, undifferentiated into proximal and distal parts, and relatively large monosporangia (greater than or equal to 12.0 mum long). Spermatangia. and possible propagules were observed in some Mexican populations. This is the third Audouinella species observed to have gametangia and the first member of the Acrochaetiales with putative propagules. The second species, from Central Mexico, was characterized by the following features: macroscopic thalli, the erect system differentiated into proximal parts with cylindrical cells, unbranched or rarely branched, and distal parts with barrel-shaped cells, abundantly branched to form dense fascicles, with alternate or dichotomous branching, some at right-angles to the axis, and relatively large monosporangia (greater than or equal to 12.0 mum long). The morphologically distinct proximal and distal portions of the erect system, the latter forming dense fascicles, was a consistent character so far unknown in Audouinella; thus, we propose a new species, A. huastecana sp. nov. The third species is a microscopic epiphyte, A. meiospora, with a well-developed prostrate system composed of creeping and loosely aggregated filaments, and a short homogeneous erect system (less than or equal to 15 cells) of filaments with cylindrical or barrel-shaped cells and small monosporangia (less than or equal to 13.0 mum long). A. eugenea and A. meiospora are characterized for the first time from the Southern and Northern Hemispheres, respectively, both occurring mostly in areas of tropical or subtropical rainforests. A. meiospora is reported from new macroalgal hosts. A. eugenea and A. huastecana tended to occur in warm, alkaline waters with a high ion content that were moderate to fast flowing, whereas A. meiospora was not associated with particular habitats.
dc.languageeng
dc.publisherCambridge University Press
dc.relationEuropean Journal of Phycology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAcrochaetiaceae
dc.subjectAudouinella
dc.subjectAudouinella huastecana
dc.subjectBrasil
dc.subjectMexico
dc.subjectRhodophyta
dc.subjectStream
dc.titleA new species and expanded distributions of freshwater Audouinella (Acrochaetiaceae, Rhodophyta) from Central Mexico and south-eastern Brazil
dc.typeOtro


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