Sitio web del XVIII Congreso Mexicano de Botánica

El Comité Organizador del XVIII Congreso Mexicano de Botánica invita a participar en este evento científico que se llevará a cabo del 21 al 27 de noviembre de 2010 en Guadalajara, Jalisco. Las actividades incluyen:

Conferencias magistrales Simposios Exposición de carteles Mesas redondas Reuniones satélite Cursos y talleres Certamen de tesis Excursiones Exposiciones

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El sitio web del congreso esta en:
http://www.cucba.udg.mx/congreso_botanica/

Assistant/Associate Professor in Insect Systematics and Taxonomy

Assistant/Associate Professor in Insect Systematics and Taxonomy | Society of Systematic Biologists

The Department of Entomology, Faculty of Agricultural and Food Sciences, University of Manitoba invites applications for a tenure track position at the rank of Assistant or Associate Professor, commencing July 1, 2010, or as soon as possible thereafter, to teach and conduct research in Insect Systematics and Taxonomy. The position will be weighted at approximately 45% teaching, 40% research and 15% service/outreach. Qualified applicants must possess: a Ph.D. in taxonomy and systematics of insects or closely related arthropods; a record of independent research as demonstrated by scholarly publications; the potential for developing a strong externally funded research program in one or more areas of insect systematics or taxonomy; demonstrated ability or potential for excellence in undergraduate and graduate teaching; and excellent oral and written communication skills.

For more information on this opportunity, please visit:
http://umanitoba.ca/cgi-bin/human_resources/jobs/view.pl?posting_id=83819

Hoy en PhyloSeminar: Consistency properties of species tree inference algorithms under the multispecies coalescent

Noah Rosenberg
February 24th, 13h PST
http://phyloseminar.org/

Abstract:
The topologies of gene trees that evolve along the branches of a
species tree need not match the species tree topology. As a result of
this discordance, when gene tree evolution is assumed to follow a
"multispecies coalescent" model, simple phylogenetic algorithms can
exhibit peculiar statistical inconsistencies in inferring species
trees. This talk will examine the statistical consistency under the
multispecies coalescent of several algorithms - based on consensus
trees, ranked gene trees, and the "minimize deep coalescences"
algorithm. A summary will be presented of the known consistency
properties of the various algorithms.

PhyloSphere: un servicio para compartir enlaces web

Con tantos sitios web y recursos en linea con contenido filogenético, es difícil navegar en internet para encontrar los contenidos. Entonces en vez de visitar sitio tras sitio, lo mejor es recibir encabezados de los contenidos con enlaces a los sitios web de su interes. Lo que es mejor aun: comparta los enlaces a sitios interesantes que encuentra. PhyloSphere es un servicio de agregación ("feed") que permite compartir enlaces a contenidos web.

PhyloSphere agrega avisos RSS ("feeds") de contenido nuevo en varios sitios que los interesados comparten, incluyendo revistas relevantes, blogs, sitios web de sociedades científicas, etc. Los usuarios interesados pueden agregar enlaces a sitios que encuentran navegando para compartir con la comunidad.

Suscríbase a PhyloSphere para compartir y recomendar sus enlaces a noticias, artículos, sitios web, etc y así brindar un servicio a la comunidad para diseminar mejor la información sobre la sistemática y filogenética.
http://friendfeed.com/phylosphere

El sitio Filogenetica.org tiene nueva cara

El sitio web Filogenetica.org se ha renovado. Lo que empezó a mediados del 2006 se ha convertido en un canal de comunicación y un sitio de información para la comunidad filogenética en nuestro idioma. Espero que este cambio sea bienvenido.
Uno de los cambios más importantes es también la gestión de contenido. Ahora con Joomla! será posible la participacion de los interesados, investigadores y estudiantes. Podrán cambiar y enriquecer el contenido del sitio. Solo debe registrarse una vez y tendrá acceso a subir contenido. Ojala esto funcione para beneficio de la comunidad.

Lo destacado en la literatura reciente

Phylogenetic morphometrics (I): the use of landmark data in a phylogenetic framework
Santiago A. Catalano a,b,* , Pablo A. Goloboff a,c and Norberto P. Giannini a,d

a Consejo Nacional de Investigaciones Científicas y Técnicas ; b Fundación Miguel Lillo, Miguel Lillo 251, 4000 S.M. de Tucumán, Argentina ; c Facultad de Ciencias Naturales e Instituto Miguel Lillo, Miguel Lillo 205, 4000 S.M. de Tucumán, Argentina ; d Programa de Investigaciones de Diversidad Biológica Argentina, Facultad de Ciencias Naturales, Miguel Lillo 205, 4000 S.M. de Tucumán, Argentina
*Corresponding author:

Cladistics 26: (2010).
Published Online: 28 Jan 2010

ABSTRACT

A method for the direct use of aligned landmark data (2D or 3D coordinates of comparable points) in phylogenetic analysis is described. The approach is based on finding, for each of the landmark points, the ancestral positions that minimize the distance between the ancestor/descendant points along the tree. Doing so amounts to maximizing the degree to which similar positions of the landmarks in different taxa can be accounted for by common ancestry, i.e. parsimony. This method requires no transformation of the aligned data or the results: the data themselves are the x, y, z coordinates of the landmarks, and the output of mapping a character onto a given tree is the x, y, z coordinates for the hypothetical ancestors. In the special case of collinear points, the results are identical to those of optimization of (continuous) additive characters.

Accepted 21 November 2009
DIGITAL OBJECT IDENTIFIER (DOI)
10.1111/j.1096-0031.2010.00302.x About DOI

Curso de Evolución, morfología, taxonomía y metodología de los corales post paleozoicos (Scleractinia). México

Dr. Hannes Löser (UNAM, IGL, ERNO, Hermosillo, Sonora)
Biol. José Juan Jiménez González (UNICACH, Tuxtla Gutiérrez, Chiapas)
M. en C. Leonora Martin M.(Facultad de Ciencias, UNAM, Ciudad de México)

Fecha	21-25 Junio 2010
Horario	9-14h
Lugar	Taller de Paleobiología Edificio Tlahuizcalpan Facultad de Ciencias Universidad Nacional Autónoma de México México, D.F.

* El curso es libre (sin costos).
* El nivel del curso es licenciatura avanzada hasta doctorado.
* El curso demanda inscripción.
* No hay requerimientos especiales, pero preferimos estudiantes con conocimientos básicos de la biología.
* Al término del curso se otorgara a los participantes una constancia con valor curricular.

Leer más >>>
http://www.paleotax.de/cursocor/

TreeVector: Scalable, Interactive, Phylogenetic Trees for the Web

Pethica R, Barker G, Kovacs T, Gough J, 2010. TreeVector: Scalable, Interactive, Phylogenetic Trees for the Web. PLoS ONE 5(1): e8934. doi:10.1371/journal.pone.0008934

We introduce TreeVector, a Scalable Vector Graphics–and Java-based method that allows trees to be integrated and viewed seamlessly in standard web browsers with no extra software required, and can be modified and linked using standard web technologies. There are now many bioinformatics servers and databases with a range of dynamic processes and updates to cope with the increasing volume of data. TreeVector is designed as a framework to integrate with these processes and produce user-customized phylogenies automatically. We also address the strengths of phylogenetic trees as part of a linked-in browsing process rather than an end graphic for print.
.......
TreeVector is a robust, open source software product for the biological community. Phylogenetic trees can be plotted from data files generated from popular software using the NEXUS format producing scalable vector graphics. TreeVector represents a significant advance on existing software, making use of standards and technologies which may not have been established when previous products were developed. Specifically TreeVector offers new levels of flexibility and interactiveness lending itself well to dynamic web-based implementations.

Leer más >>>
http://www.plosone.org/article/info:doi%2F10.1371%2Fjournal.pone.0008934

Premios 2010 - Research Blogging

Awards 2010 - Research Blogging

ResearchBlogging.org premiará al mejor blog seleccionado entre los casi 1000 blogs registrados que publican opiniones y discusiones serias sobre artículos arbitrados de investigación. Hay un premio para el mejor blog en cada área de la ciencia y también habrá un premio para el mejor blog en Español.

Los premios se adjudicarán a blogs registrados en RB.org, nominados antes del 11 de febrero, los cuales serán calificados por jueces expertos. Los blogs ganadores se anunciarán el 23 de Marzo, 2010. La información completa esta en http://researchblogging.org/news/?p=834

Este blog de "Noticias sobre Filogenética" esta registrado en RB.org. Se lanzo la invitación a participar en Marzo 2009. A la fecha se han publicado escasamente las siguientes 4 entradas compartiendo opiniones sobre artículos publicados en revistas arbitradas.

• Filogenética bajo Verosimilitud con un enfoque para "PhDs"
  
• Secuencias “COI-like numts” inutilizan los codigos de barras de DNA
  
• Considerable diversidad genética entre mexicanos
• Cladistics: Analisis de una matriz gigante de >73000 UT

El propósito de los premios de RB.org es reconocer a los colaboradores de blogs que ayudan a una mayor difusión de la ciencia. Espero esto sea una motivación clave y que los colaboradores de este blog se animen a compartir este año sus opiniones sobre sus lecturas de artículos en las revistas arbitradas.

Next on PhyloSeminar.org: The End of Lineage Sorting: Inferring species trees using *BEAST

Hello everyone!

I'm excited to announce that Joseph Heled will be speaking in a bit less than a week about his joint work with Alexei Drummond on lineage sorting. In addition to a usual talk, he will also be giving a little software demonstration. His abstract is below.

After Joseph will come Noah Rosenberg, who will be speaking in late February (probably the 24th), then Jens Lagergren in late March.

The End of Lineage Sorting: Inferring species trees using *BEAST

Until recently it has been common practice for a phylogenetic analysis to use a single gene sequence from a single individual organism as a proxy for an entire species. With advances in sequenceing technology it is becoming more common to see data sets containing multiple genes from multiple individuals per species. The "simple" way of analyzing those data sets by concatenating sequences from an individual is problematic when species have only recently diverged. In this talk we explain the problem of Incomplete Lineage Sorting, the gene trees within species tree model, the theoretical basis of the multi species coalescent and how to analyze those data sets using *BEAST, a method for species tree inference made available in BEAST 1.5.
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Thanks, and pass the word onto your species-tree-interested friends!

Erick

TWO PhD GRANTS AVAILABLE IN BARCELONA (INSTITUTE FOR EVOLUTIONARY BIOLOGY)

TWO PhD GRANTS AVAILABLE IN BARCELONA (INSTITUTE FOR EVOLUTIONARY BIOLOGY) | Redes

Enviado por arcadi.navarro el 7 January, 2010 - 11:17.

• Noticias REDES - Ofertas de trabajo / becas

The Evolutionary Genomics Group in the Comparative and Computational Genomics program of the IBE (http://www.ibe.upf-csic.es/) is willing to recruit two PhD students.

The research group that the successful candidate will join studies genomic variation at both the intraspecific and interspecific levels in hominids (http://www.upf.edu/bioevo/CV-ArcadiNavarro.htm). Besides several other research projects, the group runs the Population Genomics Node of the Spanish National Bioinformatics Institute (http://www.inab.org), working in close collaboration with the National Genotyping Centre (http://www.cegen.org).

Read more >>>

The Willi Hennig Society meeting 2010

The Willi Hennig Society
Hennig XXIX

May 22 to 26, 2010

Hosted by: The University of Hawaii - Manoa; Cliff Morden and his local organizing committee.

Hotel Information
Arrival Information
Registration & Abstract Submission
Marie Stopes Travel Awards
About Honolulu and Waikiki

Visit the WHS website at:
http://www.cladistics.org/meetings.html

Lo destacado en la literatura reciente

The conflation of ignorance and knowledge in the inference of clade posteriors
Christopher P. Randle a,* and Kurt M. Pickett b
a Department of Biological Sciences, Sam Houston State University, Huntsville, TX 77341-2116, USA ; b Department of Biology, University of Vermont, 316 Marsh Life Science Building, Burlington, VT 05404, USA
*Corresponding author.
Cladistics 26: (2009) 1-10.
Published Online: Jan 4 2010 3:13PM

ABSTRACT

The objective Bayesian approach relies on the construction of prior distributions that reflect ignorance. When topologies are considered equally probable a priori, clades cannot be. Shifting justifications have been offered for the use of uniform topological priors in Bayesian inference. These include: (i) topological priors do not inappropriately influence Bayesian inference when they are uniform; (ii) although clade priors are not uniform, their undesirable influence is negated by the likelihood function, even when data sets are small; and (iii) the influence of nonuniform clade priors is an appropriate reflection of knowledge. The first two justifications have been addressed previously: the first is false, and the second was found to be questionable. The third and most recent justification is inconsistent with the first two, and with the objective Bayesian philosophy itself. Thus, there has been no coherent justification for the use of nonflat clade priors in Bayesian phylogenetics. We discuss several solutions: (i) Bayesian inference can be abandoned in favour of other methods of phylogenetic inference; (ii) the objective Bayesian philosophy can be abandoned in favour of a subjective interpretation; (iii) the topology with the greatest posterior probability, which is also the tree of greatest marginal likelihood, can be accepted as optimal, with clade support estimated using other means; or (iv) a Bayes factor, which accounts for differences in priors among competing hypotheses, can be used to assess the weight of evidence in support of clades.
©The Willi Hennig Society, 2009.

DIGITAL OBJECT IDENTIFIER (DOI)

10.1111/j.1096-0031.2009.00301.x
http://www3.interscience.wiley.com/journal/123232287/abstract?

Preguntas de los lectores

1. ¿es posible usar como marcador evolutivo a los ARNm (solo exones) teniendo en cuenta que puede haber mucha variaciones debido al splicing alternativo?

2. ¿Conoces de otros sitios como CIPRES (http://www.phylo.org/) para analizar moderadas cantidades de secuencias?

Luis Tataje,
http://www.blogger.com/profile/07472607612141390238
Perú

Conservation Fellowships for Bolivia, Colombia, Ecuador, Mexico, and Peru

December 29, 2009

Russell E. Train Fellowships for Conservation Studies

Application Deadlines: January 31 and February 28, 2010
WWF’s Education for Nature Program is pleased to announce the availability of Russell E. Train Fellowships for students from Bolivia, Colombia, Ecuador, Kenya, Mexico, Papua New Guinea, Peru, Tanzania, and Timor Leste who are pursuing master’s and doctoral degrees in conservation-related fields.

Train Fellowships provide up to two years of support for education-related costs including tuition and fees, room and board, books, travel, and research. Applicants must be citizens or permanent residents of a participating country and must have at least two years’ experience in conservation. Applicants must have applied to, have been accepted to, or be currently enrolled in a conservation-related degree program at an accredited institution of higher education.
Applications for students from Bolivia, Colombia, Ecuador, and Peru are due by January 31, 2010.

Applications from Kenya, Mexico, Papua New Guinea, Tanzania, and Timor Leste are due by February 28, 2010.

Guidelines, applications, and application deadlines vary by country.

Further Scholarship Information and Application Train Fellowship webpage.

Read more: http://www.worldwildlife.org/science/fellowships/TrainDT/item1826.html