Artículos de revista: Envíos recientes
Mostrando ítems 81-100 de 851
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Teius suquiensis AVILA & MARTORI, 1991, from Santiago del Estero, Argentina : first record and potential case of range extension
(Österreichische Gesellschaft für Herpetologie, 2017-07)Teius suquiensis AVILA & MARTORI, 1991, is a parthenogenic lizard present in contact zones of the parapatric sexual spe- cies Teius oculatus (D’orbigny & Bibron, 1837) and Teius teyou (Daudin, 1802) (Avi- la 2002). This ... -
Lista de ejemplares tipos y de especies de la colección herpetológica de la Universidad Nacional del Nordeste, Corrientes, Argentina (UNNEC)
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2005)Con la intención de facilitar la tarea de localización de los ejemplares tipos de la región del nordeste del país se da a conocer una lista de aquellos depositados en la Colección Herpetológica de la Universidad Nacional ... -
Una buena noticia para la fauna de anfibios de Argentina : Trachycephalus imitatrix (Anura: Hylidae)
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2020)Ante tantas noticias de cambios climáticos, calentamiento global y extinción masiva de especies por acción antrópica la re-aparición de una especie de anfibio del género Trachycephalus en Argentina es una muy buena noticia. ... -
Empirical studies conducted with software collections : a mapping study
(Sociedad Argentina de Informática e Investigación Operativa, 2023)Software projects are inputs in Evidence-Based Software Engineering, although they are selected without following a specific strategy, which decreases the generalization and replication of the results. One option is to ... -
Melanophryniscus stelzneri spegazzinii (Anura: Bufonidae) en la República del Paraguay
(Asociación Herpetológica Argentina, 1996)Melanophryniscus stelzneri spegazzini Ga- llardo 1960. Republica del Paraguay, Dpto. Presidente Hayes, entre el Río Pilcomayo y el Río Confuso (24° 43’ S, 58° 37’ N). 2 ejemplares adultos, números MACN 07630 y ... -
Historia natural de la rana de Pedersen Argenteohyla siemersi pederseni (Anura: Hylidae), y descripción de su larva
(Asociación Herpetológica Española, 2000)El género monoespecífico Argenteohyla (Trueb, 1970) está compuesto actualmente por dos razas separadas básicamente por su diseño dorsal, por su diferencia de tamaño y por poseer una distribución alopátrica (Williams & ... -
Una aproximación hacia las definiciones eco-regionales del sur de la región oriental del Paraguay
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2016-03)El Sur de Paraguay es una región cuyas características eco-regionales son confusas debido a su carácter ecotonal. Esta región corresponde a la transición del Bosque Parananense que se proyecta desde el este y el Chaco ... -
How important was polyploidy in the diversification of herbs in the chaquean domain? The case of the Turnera sidoides autopolyploid complex (Passifloraceae : urneroideae)
(Wiley Blackwell Publishing, Inc, 2022)The evolutionary processes that shape the unique biodiversity of the Neotropical Chaquean Domain are still poorly understood, and choosing an appropriate model to address evolutionary questions is essential for understanding ... -
Uniparentality : advantages for range expansion in diploid and diploid-autopolyploid species
(Wiley Blackwell Publishing, Inc, 2022)Uniparental reproduction, the capacity of an individual to produce offspring autonomously, is expected to facilitate range expansion of populations. Paspalum spp. reproduce uniparentally by sexual (self-fertility) and ... -
Genome size evolution in Sapindaceae at subfamily level : a case study of independence in relation tokaryological and palynological traits
(Wiley Blackwell Publishing, Inc, 2014)Sapindaceae s.l. is a moderately large family of trees, shrubs and lianas. Current knowledge on genome size and how it varies in this family is scarce. This research aims to characterize the DNA content in 39 species ... -
A new species of Schizachyrium (Poaceae-Andropogoneae) from Brazil
(Wiley Blackwell Publishing, Inc, 2006)A new Brazilian species, Schizachyrium hatschbachii Peichoto, is described and illustrated. It is restricted to southern Brazil, where it grows in grasslands. Diagnostic characters, description, detailed illustration ... -
New data for palaeoclimatic reconstructions in the upper/middle Uruguay river basin : caesalpinioid Fabaceae woods in the Late Pleistocene
(Wiley Blackwell Publishing, Inc, 2022)The El Palmar Formation is the principal unit deposited during the Late Pleistocene by the Uruguay River in eastern Entre Ríos province, Argentina and north-western Uruguay. The Arroyo Yuquerí fossiliferous locality ... -
Gynoecium structure and pollen tube pathway in the cactus family with emphasis on tribe Trichocereeae (Cactaceae: Cactoideae)
(Wiley Blackwell Publishing, Inc, 2023)The structural details of the gynoecium are key to understanding the reproductive systems and successful diversification of flowering plants. However, the gynoecium morpho-anatomy in South American species of Cactaceae ... -
The evolution of chromosome number during the diversification of the tribe Vernonieae (Asteraceae)
(Wiley Blackwell Publishing, Inc, 2022)Changes in chromosome number have played an important role in the diversification and evolution of angiosperms. In Asteraceae, tribe Vernonieae are one of the most variable groups with regard to chromosome number. ... -
Considerations on the genus Schizachyrium (Poaceae–Andropogoneae) in Central America and West Indies, and confirmation of the occurrence of S. glaziovii
(Magnolia Press, 2015-02-25)Schizachyrium (Poaceae–Andropogoneae) incluye cerca de 60 especies, 10 de las cuales fueron previamente citadas para América Central y 13 especies para las Indias Occidentales. En este trabajo se reporta la presencia de ... -
Bulbostylis litoreamazonicola, a new species of Cyperaceae from the Brazilian Amazonian coast
(Magnolia Press, 2022-01-10)A new species of Bulbostylis (Cyperaceae), only known from the Brazilian Amazonian coast, is here described and illustrated. Bulbostylis litoreamazonicola was found growing over dunes, in seasonally flooded restinga ... -
A new variety of Schizachyrium (Poaceae : Andropogoneae) from South America, with notes on the infraspecific taxa of Schizachyrium tenerum
(Magnolia Press, 2019-05-09)A new variety of Schizachyrium tenerum from South America is described and illustrated. The new taxon (S. tenerum var. muticum) differs from the other varieties of the species (S. tenerum var. tenerum and S. tenerum var. ... -
A taxonomic revision of the genus Bacopa (Gratioleae, Plantaginaceae) in Argentina
(Magnolia Press, 2018-01-26)In the present work a revision of Bacopa for Argentina is presented. In this country the genus is integrated by twelve native taxa: eleven species and one variety. Full descriptions, along with distribution information, ... -
Taxonomic position and identity of Stemodia scoparioides (Gratiolae, Plantaginaceae)
(Magnolia Press, 2013-10-01)In recent floristic and taxonomic studies, Stemodia scoparioides (Gratiolae, Plantaginaceae) has been considered a synonym of S. lanceolata or a synonym of S. stricta. However, a detailed analysis of the type material and ... -
Stemodia diplohyptoides (Plantaginaceae, Gratiolae) : a new diploid species from South America
(Magnolia Press, 2014-12-04)Stemodia diplohyptoides (Plantaginaceae), a new species from Gratiolae tribe is described and illustrated. This taxon is found in northeastern Argentina, at the edge of the Parana River that surrounds the north and center ...
