Biodiversidad de Myxomycetes en el Desierto de Monte (Argentina)

A biodiversity survey for myxomycetes was carried out in the Monte Desert (Argentina) and surrounding areas in November 2006 and late February and March 2007. Specimens were collected in seven different provinces (Catamarca, Jujuy, La Rioja, Salta, San Juan, San Luis and Tucumán), between 23º and 33º S latitude, and a total of 105 localities were sampled. Cacti and succulent plants were the most common type of substrate investigated, but shrubs and herbs characteristic of this biome were also included in the survey. Almost six hundred specimens of myxomycetes from 72 different species in 22 genera were collected either in the field, or from moist chamber cultures prepared with samples of plant material obtained from the same collecting sites. The results include 1 species new to science, Macbrideola andina three more species recently described based on material from this survey, 5 species cited for the first time for the Neotropics, 11 new records for South America and 38 new records for Argentina. Taxonomic comments on rare or unusual species are included and illustrated with photographs by LM and SEM. Data are presented on the development of some species and microenvironmental factors are discussed. An analysis of the biodiversity of myxomycetes in this area, and a comparison with other desert areas, are included.Con el objetivo de estudiar la biodiversidad de Myxomycetes en el Desierto de Monte (Argentina) y áreas circundantes, se realizó un muestreo en los meses de noviembre de 2006 y febrero y marzo de 2007. Se recolectaron especímenes en un total de 105 localidades pertenecientes a siete provincias (Catamarca, Jujuy, La Rioja, Salta, San Juan, San Luis y Tucumán), situadas entre los paralelos 23º y 33º de latitud sur. Los cactus y plantas suculentas fueron los tipos de sustratos más estudiados, pero también se analizaron arbustos y plantas herbáceas características de este bioma. Casi 600 especímenes de mixomicetes pertenecientes a 72 especies y 22 géneros fueron recolectados en el campo o se obtuvieron en el laboratorio, por cultivo en cámara húmeda, a partir de plantas procedentes de las mismas localidades. Los resultados incluyen una nueva especie, Macbrideola andina, otras tres recientemente descritas y basadas en material de este estudio, 5 especies que se citan por primera vez para el Neotrópico, 11 nuevos registros para América del Sur y 38 nuevos registros para Argentina. Se añaden comentarios taxonómicos e ilustraciones fotográficas, tanto con microscopía óptica como electró ni ca, de aquellas especies raras o poco comunes. Se discuten nuevos datos sobre el desarrollo de algunas especies y cómo influyen determinados factores microambientales. También se incluye un análisis de la biodiversidad de mixomicetes en esta zona árida y se compara con la obtenida en otros desiertos de América

Typification of the myxomycete taxa described by the Listers and preserved at the Natural History Museum, London (BM)

Peer reviewe

Biodiversity of Myxomycetes from the Monte Desert of Argentina

A biodiversity survey for myxomycetes was carried out in the Monte Desert (Argentina) and surrounding areas in November 2006 and late February and March 2007. Specimens were collected in seven different provinces (Catamarca, Jujuy, La Rioja, Salta, San Juan, San Luis and Tucumán), between 23º and 33º S latitude, and a total of 105 localities were sampled. Cacti and succulent plants were the most common type of substrate investigated, but shrubs and herbs characteristic of this biome were also included in the survey. Almost six hundred specimens of myxomycetes from 72 different species in 22 genera were collected either in the field, or from moist chamber cultures prepared with samples of plant material obtained from the same collecting sites. The results include 1 species new to science, Macbrideola andina three more species recently described based on material from this survey, 5 species cited for the first time for the Neotropics, 11 new records for South America and 38 new records for Argentina. Taxonomic comments on rare or unusual species are included and illustrated with photographs by LM and SEM. Data are presented on the development of some species and microenvironmental factors are discussed. An analysis of the biodiversity of myxomycetes in this area, and a comparison with other desert areas, are included.<br><br>Con el objetivo de estudiar la biodiversidad de Myxomycetes en el Desierto de Monte (Argentina) y áreas circundantes, se realizó un muestreo en los meses de noviembre de 2006 y febrero y marzo de 2007. Se recolectaron especímenes en un total de 105 localidades pertenecientes a siete provincias (Catamarca, Jujuy, La Rioja, Salta, San Juan, San Luis y Tucumán), situadas entre los paralelos 23º y 33º de latitud sur. Los cactus y plantas suculentas fueron los tipos de sustratos más estudiados, pero también se analizaron arbustos y plantas herbáceas características de este bioma. Casi 600 especímenes de mixomicetes pertenecientes a 72 especies y 22 géneros fueron recolectados en el campo o se obtuvieron en el laboratorio, por cultivo en cámara húmeda, a partir de plantas procedentes de las mismas localidades. Los resultados incluyen una nueva especie, Macbrideola andina, otras tres recientemente descritas y basadas en material de este estudio, 5 especies que se citan por primera vez para el Neotrópico, 11 nuevos registros para América del Sur y 38 nuevos registros para Argentina. Se añaden comentarios taxonómicos e ilustraciones fotográficas, tanto con microscopía óptica como electró ni ca, de aquellas especies raras o poco comunes. Se discuten nuevos datos sobre el desarrollo de algunas especies y cómo influyen determinados factores microambientales. También se incluye un análisis de la biodiversidad de mixomicetes en esta zona árida y se compara con la obtenida en otros desiertos de América

A rapid biodiversity assessment of myxomycetes from a primary tropical moist forest of the Amazon basin in Ecuador

A rapid biodiversity assessment of myxomycetes from Yasuní National Park in eastern Ecuador revealed a high diversity of these microorganisms, with a total of 86 taxa (81 species and 5 varieties) from 559 collections, being recorded. One new species (Arcyria annulata), characterized by orange, minute, dispersed sporocarps, is described. Badhamia gigantospora and Hemitrichia cf. pseudoleiocarpa are new records for the Neotropics, and 13 species are new records for Ecuador. This is the first comprehensive study of myxomycetes from a primary lowland moist forest of the Amazon basin and serves as a baseline of the myxomycetes from this region of Ecuador. The surprisingly high number of species in a relatively small area confirms the rich myxobiota of this national park, and the abundance of myxomycetes as a regular component of these tropical forests. SEM micrographs are used to illustrate some species, and data on species distribution are also included.Peer reviewe

Didymium azorellae, a new myxomycete from cushion plants of cold arid areas of South America

Peer reviewe

Diversity patterns, ecological associations and future of research on Costa Rican myxomycetes

The most active research period on myxomycetes in Costa Rica has taken place in the last three decades. During this time, most of the collections have been carried out and most of the scientific articles have been produced. However, the lack of standard protocols and systematic planning across the country generated a need to conduct an analysis of myxomycete records to define future lines of work. A compilation, cleaning, standardisation and analysis of information associated with a database of more than 7800 records that comprised 242 species of myxomycetes reported in Costa Rica during the last 110 years, was carried out. An interpretation of data with a conservation approach that integrated elements of data-mining and geographical information systems was conducted. Results showed that myxomycetes has been comparatively well studied in Costa Rica in relation to other regional or tropical countries. However, survey effort has been unequal within the territory, leaving some interesting areas or substrates understudied. The absence of long-term goals to study this country and Mesoamerica has limited the potential that the analysed data can have within the context of conservation. This could be the next logical step in the study of this group of microorganisms in that country.Consejo Superior de Investigaciones Científicas/[COOPB20155]/CSIC/EspañaUniversidad de Costa Rica/[570-B8-006]/UCR/Costa RicaMyxotropic project/[CGL2014-52584P]//UCR::Sedes Regionales::Sede del Atlántico::Recinto de Paraíso::Finca Experimental Interdisciplinaria de Modelos Agroecológicos (FEIMA