Recursos de colección

DIALNET OAI Articles (813.783 recursos)

Dialnet (Difusión de Alertas en la Red) es una plataforma de recursos y servicios documentales, cuyo objetivo fundamental se centra en mejorar la visibilidad y el acceso a la literatura científica hispana a través de Internet.

Ciencias biológicas

Mostrando recursos 1 - 20 de 10.608

  1. El papel de Phyllocaulis variegatus (Mollusca: Veronicellidae) en la transmisión de parásitos digéneos

    Díaz, Julia Inés; Salomón, Oscar Daniel; Navone, Graciela Teresa; Valente, Romina
    Ninety-five veronicellid slugs identified as Phyllocaulis variegatus were collected in Puerto Iguazú, Misiones Province, Argentina. Specimens were examined for parasites. Metacercariae of the genus Brachylaima (Brachylaimidae) were recovered from the body cavity near the female genital pore. The results establish the capability of P. variegatus to act as an intermediate host of Brachylaima sp. in the area. This study represents the first record of metacercariae of Brachylaima sp. in Argentina.

  2. La construcción del nicho y el concepto de holobionte, hacia la reestructuración de un paradigma

    Cerqueda García, Daniel; Falcón, Luisa I.

  3. A compilation of the birds of La Libertad Region, Peru

    Núñez Zapata, Jano; Pollack Velásquez, Luis E.; Huamán, Emiliana; Tiravanti, Jorge; García, Edith
    Presentamos una lista de las especies de aves que han sido documentadas en la región de La Libertad, una región semi-árida muy diversa situada en el noroeste de Perú. Los registros se basan en observaciones de campo, revisión de literatura y bases de datos de colecciones científicas. Se registró un total de 484 especies en esta región. Estos registros incluyen 45 especies amenazadas y 42 endémicas de Perú. Esta lista pretende ser una guía para futuros programas de manejo y conservación de la biodiversidad para la región.

  4. Las monocotiledóneas del municipio de San Juan Colorado, Oaxaca, México

    Mejía Marín, María Isabel; Espejo-Serna, Adolfo; López-Ferrari, Ana Rosa; Fonseca-Juárez, Rosa María
    The municipality of San Juan Colorado is located in the southwestern part of the state of Oaxaca and has an approximate area of 86 km2. The aim of this study was to elaborate a checklist of the monocots present in the zone, a place that has never been botanically explored before. Conventional methods of botanical collection were used. Specimens were collected at random in different places in the area. As a result, 23 families, 81 genera and 139 species of monocots were found, the families best represented are Orchidaceae, Poaceae and Cyperaceae. With this study we contribute with new floristic...

  5. Modelación de la distribución del oso andino Tremarctos ornatus en el bosque seco del Marañón (Perú)

    Figueroa, Judith; Stucchi, Marcelo; Rojas VeraPinto, Roxana
    The Andean bear (Tremarctos ornatus) is a vulnerable species, his habitat is gradually fragmented by the expansion of human activities. In Peru, the Mara�nón dry forest, an ecoregion with little biological and ecological research, is the habitat of the species. Unfortunately, at the present time, it is being affected by agriculture, livestock and road construction, and soon will be threatened by the implementation of large scale economic activities, such as hydroelectric stations. In order to identify priority sectors for research and conservation of the Andean bear in the Marañón dry forest of Cajamarca and Amazonas regions, its habitat was modeled...

  6. Estudio de la fauna de coleópteros en fragmentos de bosque de castaños del LIC Ancares-Courel.

    Penín Pereira, Liliana
    Este estudio, está englobado dentro de un proyecto más amplio (Efecto de la fragmentación y el uso en la diversidad biológica de los bosques de castaños, Castanea sativa, del Lic Ancares-Courel) (P61DIT05RF020001PR). En España los principales bosques de castaños se reducen a cuatro grandes núcleos, de los cuales el más importante se extiende desde Navarra por todo el litoral norte y noroeste hasta el río Miño, presentando ramificaciones que se adentran hasta las comarcas limítrofes de León y Zamora. El área de estudio en la que se desarrolló este trabajo corresponde administrativamente a la Comunidad Autónoma de Castilla y León,...

  7. Las orquídeas del herbario del Instituto Sánchez Cantón (Pontevedra)

    Pino Pérez, Rubén; Silva Pando, Francisco Javier; Pino Pérez, Juan José
    In this study we present the results to check the sheets belonging to Orchidaceae from the Herbaria of B.Merino deposited into Institute Sanchez Cantón (Pontevedra). Fifteen species were found, their identification was verified and their specific name was actualized.

  8. Asientos Corológicos LOU, 2011-2012

    Pino Pérez, Rubén; Pino Pérez, Juan José
    We present the list of taxa from the herbaria sheets LOU introduced by the authors during the years 2011 and 2012. In addition to the information available on the label of the sheet, adding in some cases, morphological, chorological or conservation comments. It described Glandora prostrata (Loisel.) D.C. Thomas subsp. prostrata var. pallida R. Pino, var. nov.

  9. Algunos lepidópteros gallegos de la colección del Centro de Investigaciones Agrarias de Mabegondo (A Coruña)

    Pino Pérez, Juan José; Castro González, José
    A list of Lepidoptera, captured by one of the authors (JCG) between 1972 and 1989, and depositated in the dependences of the experimental station of Mabegondo, belonging to Investigaciones Agrarias de Mabegondo, CIAM, Xunta de Galicia, is showed in the present study. All the specimens were collected in Galicia, mainly in the farms of Mabegondo and Bos-Bergondo, both in the province of Coruña, and in the southeast zone of the province of Lugo.

  10. Una población de Lysandra coridon (Poda, 1761) en la costa de A Coruña, Galicia (NW de España)

    Pino Pérez, Juan José; Pino Pérez, Rubén
    We describe the discovery of a unique population of Lysandra coridon (Poda, 1761) on serpentinite soils in the north coast of A Coruña (Galicia, NW of Spain) and we provide data on their morphology and ecology.

  11. Aportaciones corológicas a los lucánidos (Coleoptera, Lucanidae) de Galicia

    Pino Pérez, Juan José; Pino Pérez, Rubén
    We show the data of specimens from Lucanidae (Coleoptera) donated in 2013 to the LOU-Arthr collection of CIF de Lourizan.

  12. Aportaciones corológicas a los drepánidos (Lepidoptera), Drepanidae) de Galicia

    Pino Pérez, Juan José; Pino Pérez, Rubén; Pino Cancelas, Adrián
    We show the data of specimens from Drepanidae (Lepidoptera) donated in 2013 to the LOU-Arthr collection of CIF de Lourizan.

  13. Aportaciones corolłgicas a los noctuidae (lepidoptera) de Galicia

    Pino Pérez, Juan José
    We show the data of specimens from Noctuidae (Lepidoptera) donated in 2013 to the LOU-Arthr collection of CIF de Lourizan.

  14. Historia florística y ambiental del bosque mesófilo de montaña en el centro-occidente de México durante la pequeña edad de hielo

    Castillo Batista, Ana Patricia del; Figueroa Rangel, Blanca L.; Lozano García, Socorro; Olvera Vargas, Miguel; Cuevas Guzmán, Ramón
    Through the use of palaeoecological techniques we inferred the environmental and floristic history of the cloud forest with relict presence of Acer saccharum subsp. skutchii in west-central Mexico. A 37 cm depth sediment core (TLP-N2) was used to reconstruct the vegetation of the last 720 years; paleoenvironmental proxy consisted of magnetic susceptibility, XRF and loss of ignition, while microfossil charcoal was used as a proxy reflecting fire occurrence. The beginning of the Little Ice Age is reported around 1341-1858 with the presence of abundant woody taxa and pteridophytes. The driest period was detected from 1653 to 1720, which corresponds with...

  15. Phthitia (Kimosina) enigmatica sp.n.: a new sphaerocerid species from Spain (Diptera, Sphaeroceridae)

    Carles Tolrá, Miguel
    A new sphaerocerid species, Phthitia (Kimosina) enigmatica sp.n., is described from Spain. A special combination of features makes this new species peculiar.

  16. Fungus gnats (Diptera: Bolitophilidae, Keroplatidae, Mycetophilidae) from Galicia, including 28 species new to Spain and 23 new to the Iberian Peninsula

    Chandler, Peter; Camaño Portela, José Luis
    A sample of 224 specimens of fungus gnats of NW Spain was examined. This is a region not much studied for this group. Altogether 100 species including 96 species of Mycetophilidae, 1 species of Bolitophilidae and 3 species of Keroplatidae species were found. These included two species of Keroplatidae and 26 species of Mycetophilidae species new for Spain. Of these 23 species of Mycetophilidae were also new for the Iberian Peninsula.

  17. Efecto de una presa sobre las comunidades bentónicas de macroinvertebrados y su hábitat en un río atlántico

    López Núñez, F. A.; González Filgueira, L.; Gutiérrez Díez, I.; Rodríguez Vieites, D.
    Since antiquity, aquatic ecosystems have been affected by various anthropogenic activities. This paper evaluates the effect of a dam on the river both aquatic macroinvertebrate communities on the environmental characteristics of the habitat where these are developed. This took 12 samples of macroinvertebrates on both sides of the dam and at each sampling point were estimated number of environmental variables that were used to characterize the habitat of each of the two areas. As expected, there were significant differences in environmental characteristics between the two sides of the dam can also distinguish two types of macroinvertebrate communities, particularly in the composition of Trichoptera and Ephemeroptera. The...

  18. Aportacións corolóxicas ao proxecto Flora iberica, I

    García Martínez, Xosé Ramón
    This paper includes some herbarium sheets as chorological records from Galicia and neighbouring provinces for the Flora iberica project.

  19. Aditamentos botánicos de Galicia, I

    Silva Pando, Francisco Javier; Pino Pérez, Rubén; García Martínez, Xosé Ramón; Pino Pérez, Juan José; Gómez Vigide, Fermín; Camaño Portela, José Luis
    In this paper we make comments about 29 plants of the flora of Galicia whith chorological, ecological, taxonomic or bibliographic interest.

  20. Temperature treatments boost subclinical infections of Batrachochytrium dendrobatidis dendrobatidis in a Mexican salamander (Pseudoeurycea leprosa)

    Mendoza Almeralla, Cinthya; López Velázquez, Aldo; Longo, Ana V.; Parra Olea, Gabriela
    The first record about the pathogenic fungus Batrachochytrium dendrobatidis in Mexican plethodontid salamanders dates back to the 1970s. However, little is known of the patterns of infection in wild populations and the effects of changes in temperature on the degree of infection. This work quantified Bd infection in a population of Pseudoeurycea leprosa in La Malinche National Park, Puebla, Mexico from June 2011 to September 2012. A total of 160 adult salamanders were experimentally exposed to temperatures of 10, 15, 20, 23, 25, or 28?C for 10 weeks. The results of this study revealed that: (1) the population of P....

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