El CSIC reconoce el trabajo del Jardín Canario

El Consejo Superior de Investigaciones Científicas entrega un premio al Jardín Botánico Canario Viera y Clavijo UA CSIC de la Consejería de Medio Ambiente del Cabildo de Gran Canaria por el desarrollo de la aplicación ArbolApp-Canarias. [Leer más...]

Phylogenetic and morphological circumscription of the Orbilia aurantiorubra group

LUIS QUIJADA1 , HANS-OTTO BARAL2, RUTH JAEN-MOLINA3, MICHAEL WEISS4, JULI CAUJAPÉ-CASTELLS3 & ESPERANZA BELTRÁN-TEJERA1

1 Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, Tenerife 38201, Canary Islands, Spain.
2 Blaihofstr.42, D-72074. Tübingen. Germany.
3 Departamento de Biodiversidad Molecular y Banco de ADN. Jardín Botánico Canario “Viera y Clavijo” – Unidad Asociada CSIC, Cabildo de Gran Canaria, Spain.
4 Universität Tübingen, Fachbereich Biologie, Auf der Morgenstelle 5, D-72076 Tübingen, Germany.

Abstract

The phylogeny of Orbilia aurantiorugra and related species is inferred from ITS sequence data. Orbilia aurantiorubra is redefined according to vital taxonomy. Integrated analyses of molecular and morphological data, and ecological (e.g. substrate) and geographical origin suggest the existence of three new species, which are described in this paper: Orbilia xanthoguttulata from Europe, O. succulenticola from the Canary Islands, and O. jugulospora from Ethiopia (Africa) and Taiwan (Southeast Asia). [Leer más...]

Molecular taxonomic identification in the absence of a ‘barcoding gap’: a test with the endemic flora of the Canarian oceanic hotspot

Abstract

We use a comprehensive subset of Canarian angiosperms corresponding to 23 families, 35 genera and 60 Canarian endemic taxa to test whether this flora is suitable to taxonomic identification with the two proposed plant DNA barcode sequences and whether these sequences may reveal the existence of cryptic species overlooked by morphology. The rate of discrimination success between the insular congeneric samples using the rbcL+matK combination and a ‘character-based’ approach (where we use only the combination of nucleotide positions in an alignment that allows unambiguous species identification) is higher (82.29%) than that obtained with the ‘distance-based’ approach (80.20%) used by the CBOL Plant Working Group in 2009 and also when compared with tests conducted in other floras. [Leer más...]

EL USO DE VARIABLES GENÉTICAS PARA CONSERVAR Y GESTIONAR LA FLORA ENDÉMICA DE GRAN CANARIA

Las constantes mejoras técnicas en diferentes campos de investigación están contribuyendo a la rápida generación de datos multidisciplinares sobre biodiversidad que son cada vez más fiables y económicos. Con la ayuda de los avances informáticos que derivan de la implantación de la sociedad de la información y las telecomunicaciones, tales datos ponen las bases para hacer cada vez más y mejores aportaciones a las necesarias estrategias de conservación y gestión de la flora en cualquier territorio. [Leer más...]

INFORME DE LA «ASISTENCIA TÉCNICA PARA EL ESTUDIO DEL MEDIO NATURAL DE BIZOURANE y TAGMOUTE EN MARRUECOS»

Este trabajo se encuentra recogido en la memoria de los trabajos realizados para cumplir con los requerimientos de la “Asistencia técnica para el estudio del medio natural de Bizourane y Tagmoute en Marruecos”, encargada a la Fundación Canaria Amurga Maspalomas por la Fundación Universitaria de Las Palmas de Gran Canaria. [Leer más...]

A review of the allozyme dataset for the Canarian endemic flora: causes of the high genetic diversity levels, implications for conservation

Pérez de Paz J, Caujapé-Castells J

Annals of Botany 2013 (in press)

• Background and Aims: We update the allozyme and reproductive datasets for the Canarian flora to (i) assess how the present levels and structuring of genetic variation have been influenced by the abiotic island traits and by phylogenetically determined biotic traits of the corresponding taxa; and (ii) suggest conservation guidelines. [Leer más...]

Polyploidy and microsatellite variation in the relict tree Prunus lusitanica L.: how effective are refugia in preserving genotypic diversity of clonal taxa?

García-Verdugo C, Calleja JA, Vargas P, Silva L, Moreira O, Pulido F

Molecular Ecology 2013 (in press, doi: 10.1111/mec.12194)

Refugia are expected to preserve genetic variation of relict taxa, especially in polyploids, because high gene dosages could prevent genetic erosion in small isolated populations. However, other attributes linked to polyploidy, such as asexual reproduction, may strongly limit the levels of genetic variability in relict populations. Here, ploidy levels and patterns of genetic variation at nuclear microsatellite loci were analysed in Prunus lusitanica, a polyploid species with clonal reproduction that is considered a paradigmatic example of a Tertiary relict. Sampling in this study considered a total of 20 populations of three subspecies: mainland lusitanica (Iberian Peninsula and Morocco), and island azorica (Azores) and hixa (Canary Islands and Madeira).

[Leer más...]

Transformer-4 version 2.0.1, a free multi-platform software to quickly reformat genotype matrices of any marker type, and archive them in the Demiurge information system

Caujapé-Castells J, Sabbagh I, Castellano JJ, Ramos R, Henríquez V, Quintana FM, Medina DA, Toledo J, Ramírez F, Rodríguez JF

Molecular Ecology Resources 2013 (doi: 10.1111/1755-0998.12084)  

 

Transformer-4 version 2.0.1 (T4) is a multi-platform freeware programmed in JAVA that can transform a genotype matrix in Excel or XML format into the input formats of one or several of the most commonly used population genetic software, for any possible combination of the populations that the matrix contains. T4 also allows the users to (i) draw allozyme gel interpretations for any number of diploid individuals, and then generate a genotype matrix ready to be used by T4; and (ii) produce basic reports about the data in the matrices. [Leer más...]

ISLAND-BIODIV

Project description
ISLAND-BIODIV is a concerted, transnational and transregional collaboration to provide measures of biodiversity within island ecosystems and establish fast, efficient and long-term monitoring strategies for three inter-dependant functionally important groups:

Flowering plants

Macro-invertebrates living above ground

Micro-invertebrates inhabiting soil systems.

Involved in this project IPNA-CSIC, Universidad de La Laguna, Université de La Réunion, Université Paul Sabatier, Universidade dos Açores, Terceira, Jardín Botánico Canario ‘Viera y Clavijo’-UA CSIC. [Leer más...]

Symposium “Evolution on Islands: A Colloquium to Honor the Careers of Daniel Crawford and Tod Stuessy” within the Botany 2012 meeting in Columbus (Ohio)

Dan Crawford and Tod Stuessy began collaborating on the study of island evolution over 30 years ago. This long productive collaboration has provided important insights into insular diversification and their work has inspired and shaped subsequent generations of evolutionary biologists work in island systems. The importance of their research has been recognized widely and they both are former Asa Gray and BSA Merit Award recipients. They have countless hours of service to both ASPT and BSA and served as president of ASPT in sequential years. [Leer más...]