Difference between revisions of "Systematics Seminar"

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This is the home page of the UConn EEB department's Systematics Seminar (EEB 6486). This is a graduate seminar devoted to issues of interest to graduate students and faculty who make up the systematics program at the University of Connecticut.  
 
This is the home page of the UConn EEB department's Systematics Seminar (EEB 6486). This is a graduate seminar devoted to issues of interest to graduate students and faculty who make up the systematics program at the University of Connecticut.  
<br><br>
+
 
 +
[[Systematics Listserv|Click here for information about joining and using the Systematics email list]]
 +
 
 +
== Meeting time and place ==
 +
Every Monday (except Labor Day, Sep. 4) at 3pm in the Bamford Room (TLS 171b).
 +
 
 +
== Schedule for Fall 2017 ==
 +
=== Sep. 4 ===
 +
Labor day holiday (no meeting)
 +
 
 +
=== Sep. 11 ===
 +
Paul and Suman will lead the discussion of the paper:
 +
 
 +
Brown, J. M., and R. C. Thomson. 2017. Bayes factors unmask highly variable information content, bias, and extreme influence in phylogenomic analyses. Systematic Biology 66(4): 517-530. [https://doi.org/10.1093/sysbio/syw101 doi:10.1093/sysbio/syw101]
 +
 
 +
=== Sep. 18 ===
 +
Noah Reid will lead discussion on this paper today:
 +
 
 +
Shen, Xing-Xing, Chris Todd Hittinger, and Antonis Rokas. "Contentious relationships in phylogenomic studies can be driven by a handful of genes." Nature Ecology & Evolution 1 (2017): 0126.
 +
 
 +
https://www.nature.com/articles/s41559-017-0126
 +
 
 +
We’ll be particularly interested in comparing it to this past Monday’s paper:
 +
 
 +
Brown, Jeremy M., and Robert C. Thomson. "Bayes factors unmask highly variable information content, bias, and extreme influence in phylogenomic analyses." Systematic biology 66.4 (2016): 517-530.
 +
 
 +
https://academic.oup.com/sysbio/article-abstract/66/4/517/2950896
 +
 
 +
=== Sep. 25 ===
 +
 
 +
Katie Taylor will lead a discussion of this (very) recent species delimitation paper in Systematic Biology:
 +
 
 +
Cadena, C. D., Zapata, F., & Jiménez, I. (2017). Issues and Perspectives in Species Delimitation using Phenotypic Data—Atlantean Evolution in Darwin’s Finches. Systematic Biology. [http://doi.org/10.1093/sysbio/syx071 DOI 10.1093/sysbio/syx071]
 +
 
 +
=== Oct. 2  ===
 +
 
 +
Charlie Delavoi will lead a discussion on the BPP process for species delimitation: http://abacus.gene.ucl.ac.uk/ziheng/pdf/2015YangCZv61p854.pdf
 +
 
 +
Ziheng Yang; The BPP program for species tree estimation and species delimitation, Current Zoology, Volume 61, Issue 5, 1 October 2015, Pages 854–865, https://doi.org/10.1093/czoolo/61.5.854
 +
 
 +
=== Oct. 9 ===
 +
Seminar canceled for today
 +
 
 +
=== Oct. 16 ===
 +
Bernard Goffinet will lead the discussion using a study led by Nicholas Magain as part of his Ph.D. at Duke, which deals with species complexes in lichenized fungi. He compares multiple species delimitations in two complexes.
 +
 
 +
'''Magain, N., et al. In press. Conserved genomic collinearity as a source of broadly applicable, fast evolving, markers to resolve species complexes: A case study using the lichen-forming genus ''Peltigera'' section ''Polydactylon.'' Molecular Phylogenetics and Evolution.''' [https://doi.org/10.1016/j.ympev.2017.08.013 DOI:10.1016/j.ympev.2017.08.013]
 +
 
 +
Also, for those interested, here is a review of species delimitation methods (in 2015). Note: those on the Systematics-L list received a PDF of this paper (see instructions at the top of this page if you are not currently enrolled in this list and would like to be).
 +
Leavitt, SD, CS Moreau, and HT Lumbsch. 2015. The Dynamic Discipline of Species 2 Delimitation: Progress Toward Effectively Recognizing Species Boundaries in Natural Populations. Chapter 2 in DK Upreti et al. (eds.), Recent Advances in Lichenology, Springer India.
 +
[https://doi.org/10.1007/978-81-322-2235-4_2 DOI:10.1007/978-81-322-2235-4_2]
 +
 
 +
=== Oct. 23 ===
 +
Diler Haji will lead us in a discussion of the paper below:
 +
 
 +
Ferla, MP,  J Cameron Thrash, SJ Giovannoni, and WM Patrick. 2013. New rRNA Gene-Based Phylogenies of the Alphaproteobacteria Provide Perspective on Major Groups, Mitochondrial Ancestry and Phylogenetic Instability. PLoS One 8(12): e83383. [http://dx.doi.org/10.1371/journal.pone.0083383 doi 10.1371/journal.pone.0083383]
 +
 
 +
The central question for this week is: What exactly is a species of ''Hodgkinia''? ''Hodgkinia'' is a cicada-specific alphaproteobacterial endosymbiont within the Rhizobiales that can be more than 20% divergent across its genome and still be considered ''Hodgkinia''. This is a paper looking at alphaproteobacterial phylogeny and the placement of a rhizobiales bacterium.
 +
 
 +
=== Oct. 30 ===
 +
 
 +
Kevin Keegan will lead discussion of:
 +
 
 +
Beaulieu, Jeremy M., and Brian C. O’Meara 2016 Detecting Hidden Diversification Shifts in Models of Trait-Dependent Speciation and Extinction. Systematic Biology 65(4): 583–601. [https://doi.org/10.1093/sysbio/syw022 doi:10.1093/sysbio/syw022]
 +
 
 +
=== Nov. 6  ===
 +
 
 +
Paul Lewis will lead discussion of:
 +
 
 +
[http://doi.org/10.1093/sysbio/syw103 Allman, E. S., Kubatko, L. S., & Rhodes, J. A. (2017). Split Scores: A Tool to Quantify Phylogenetic Signal in Genome-Scale Data. Systematic Biology, 66(4), 620–636.]
 +
 
 +
=== Nov. 13  (today) ===
 +
 
 +
Lee Deininger will lead discussion of:
 +
 
 +
Hadfield, JD, BR Krasnov, R Poulin, and S Nakagawa. 2014. A tale of two phylogenies: comparative analyses of ecological interactions. The American Naturalist 183(2):174-187. [http://dx.doi.org/10.1086/674445 doi: 10.1086/674445] (supplementary material at [http://dx.doi.org/10.5061/dryad.jf3tj doi: 10.5061/dryad.jf3tj])
 +
 
 +
=== Nov. 20 ===
 +
Everyone should contemplate:
 +
 
 +
Guan X, Silva P, Gyenai KB, Xu J, Geng T, Tu Z, Samuels DC, Smith EJ. 2009. The mitochondrial genome sequence and molecular phylogeny of the turkey, ''Meleagris gallopavo''.  Anim Genet. 2009 Apr;40(2):134-41. [http://dx.doi.org/10.1111/j.1365-2052.2008.01810.x doi: 10.1111/j.1365-2052.2008.01810.x]
 +
 
 +
Happy Thanksgiving!
 +
 
 +
=== Nov. 27 ===
 +
 
 +
=== Dec. 4 ===
 +
 
 +
 
 +
== Information for discussion leaders ==
 
'''Seminar Format:''' Registered students be prepared to lead discussions, perhaps more than once depending on the number of participants.  
 
'''Seminar Format:''' Registered students be prepared to lead discussions, perhaps more than once depending on the number of participants.  
  
Line 31: Line 120:
  
 
'''Projector:'''  
 
'''Projector:'''  
The presenter will be responsible for setting up the projector for each class session—you will need to get it from the EEB office, make sure you have appropriate adaptors and have it set up so that class can begin on schedule. Kathy has reserved the pink projector for our class. If you do not have a laptop, let Wagner know and he will bring his. (Nick McIntosh may also be able to provide a loaner.)
+
The Bamford room has joined the modern world--you should just need to plug in your computer or USB key to project.
 
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[[Systematics Listserv|Click here for information about joining and using the Systematics email list]]
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+
== Meeting time and place ==
+
For the Fall 2015 semester, we are meeting in the '''Bamford Room (TLS 171B), Tuesdays 2:30-3:30pm'''
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=== Tuesday, 1 September 2015, 3pm, Bamford Room (TLS 171b) ===
+
At this meeting we discussed possible themes for this semester's seminar, and determined the meeting time. For starters, we will explore how to use RevBayes, and afterwards explore current topics such as new developments in comparative methods.
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=== Tuesday, 8 September 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
Suman will demonstrate RevBayes using a simulated data file and a RevBayes script that is pretty bare-bones. If you would to see or play with the script and data yourself beforehand, it is available at the link below:
+
:[https://dropbox.uconn.edu/dropbox?n=RevBayes1.zip&p=WHwP8lS7EY10jpwMs RevBayes1] (simdata.nex plus test.Rev script)
+
 
+
:[http://revbayes.github.io/about.html RevBayes website]
+
 
+
A sample qsub script to run RevBayes on the BBC cluster:
+
 
+
#$ -S /bin/bash
+
#$ -cwd
+
#$ -m ea
+
#$ -M suman.neupane@uconn.edu
+
#$ -N TimeTree
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rb GTR_Gamma.nonclock.Rev
+
 
+
If you don't mind staying logged in, you can type qlogin to get assigned to a compute node that is not currently busy and then just type
+
rb GTR_Gamma.nonclock.Rev
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This is a good method to use if you just want to test RevBayes; you'll want to use Suman's qsub script for long jobs because you will not probably not want to stay logged in overnight. If you don't have an account on the cluster, you can get one by filling out this form: [http://bioinformatics.uconn.edu/contact-us/ http://bioinformatics.uconn.edu/contact-us/]
+
 
+
=== Tuesday, 15 September 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
This week we will explore the graphical model descriptions used by RevBayes. Here is the paper (password is being sent over the systematics email list):
+
:[https://dropbox.uconn.edu/dropbox?n=Syst%20Biol-2014-H%F6hna-753-71.pdf&p=EWMqcsduO0GeULlr8Y Höhna et al. 2014. Probabilistic Graphical Model Representation in Phylogenetics. Systematic Biology. 63:753–771]
+
You can also get the paper without requiring a password if you are on campus or connected via VPN using this link:
+
:[http://dx.doi.org/10.1093/sysbio/syu039 Höhna et al. 2014. Probabilistic Graphical Model Representation in Phylogenetics. Systematic Biology. 63:753–771]
+
Paul will also demonstrate how to use RevBayes on our bioinformatics cluster (probably the best way to run it, especially for long runs).
+
 
+
=== Tuesday, 29 September 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
This week we'll talk about the new "Open Tree of Life", reading the paper, and maybe exploring the website (http://opentreeoflife.org/)
+
:[http://www.pnas.org/content/early/2015/09/16/1423041112 Hinchliff et al. Synthesis of phylogeny and taxonomy into a comprehensive tree of life. PNAS. ]
+
 
+
=== Tuesday, 6 October 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
This week we'll indulge Elizabeth's interest in salamanders, and also talk about molecular dating
+
:[http://sysbio.oxfordjournals.org/content/early/2015/09/18/sysbio.syv061.full.pdf+html Shen et al. Enlarged Multilocus Dataset Provides Surprisingly Younger Time of Origin for the Plethodontidae, the Largest Family of Salamanders. Sys. Bio. in press]
+
 
+
=== Tuesday, 13 October 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
This week we'll take a look at a paper comparing small and large datasets when constructing trees. Also snakes!
+
:[https://sararuane.files.wordpress.com/2013/12/authors-accepted-copy-not-typeset-or-proofed.pdf Ruane et al. Comparing species-tree estimation with large anchored phylogenomic and small Sanger-sequenced molecular datasets: An empirical study on Malagasy pseudoxyrhophiine snakes. BMC Evolutionary Biology. in press]
+
 
+
EDIT here is the published version
+
:[http://www.biomedcentral.com/content/pdf/s12862-015-0503-1.pdf Ruane et al., 2015]
+
 
+
=== Tuesday, 20 October 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
This week we'll jump back into an anchored phylogenomics dataset, and talk about (yet another) bird phylogeny.
+
:[http://www.nature.com/nature/journal/vaop/ncurrent/pdf/nature15697.pdf Prum et al. A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing. Nature.]
+
:[http://www.nature.com/nature/journal/vaop/ncurrent/pdf/nature15638.pdf Accompanying News and Views article.]
+
:[http://www.allaboutbirds.org/earliest-beginnings-of-bird-evolution-brought-into-focus-with-new-dna-analysis/ Relevant blog post!]
+
 
+
=== Tuesday, 27 October 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
Some back and forth commentaries!
+
:[http://www.sciencemag.org/content/350/6257/171.1.full.pdf Liu & Edwards. Comment on "Statistical binning enables an accurate coalescent based estimation of the avian tree"]
+
:[http://www.sciencemag.org/content/350/6257/171.2.full.pdf Mirarab et al. Response to Comment on “Statistical binning enables an accurate coalescent-based estimation of the avian tree”]
+
 
+
=== Tuesday, 27 October 2015, 2:30pm, Bamford Room (TLS 171b) ===
+
Springer and Gatesy. 2016. The gene tree delusion. A critique of species tree methods. The reason that it is called the gene tree delusion rather than the species tree dilusion is I think because they are in favor of concatenation.
+
:[[File:Pdficon small.gif|link=https://dropbox.uconn.edu/dropbox?n=Springer%20and%20Gatesy.%202015.%20%20The%20gene%20tree%20delusion.%201-s2.0-S1055790315002225-main.pdf&p=WpXucXwcz06hxwMDO] Springer and Gatesy. 2016. MPE 94: 1-33.
+
  
== Past Systematics Seminar Fall 2014|Fall 2014]]
+
== Past Seminars ==
 +
* [[Systematics Seminar Fall 2014|Fall 2014]]
 
* [[Systematics Seminar Fall 2013|Fall 2013]]
 
* [[Systematics Seminar Fall 2013|Fall 2013]]
 
* [[Systematics Seminar Spring 2012|Spring 2012]]
 
* [[Systematics Seminar Spring 2012|Spring 2012]]

Revision as of 12:59, 13 November 2017

This is the home page of the UConn EEB department's Systematics Seminar (EEB 6486). This is a graduate seminar devoted to issues of interest to graduate students and faculty who make up the systematics program at the University of Connecticut.

Click here for information about joining and using the Systematics email list

Meeting time and place

Every Monday (except Labor Day, Sep. 4) at 3pm in the Bamford Room (TLS 171b).

Schedule for Fall 2017

Sep. 4

Labor day holiday (no meeting)

Sep. 11

Paul and Suman will lead the discussion of the paper:

Brown, J. M., and R. C. Thomson. 2017. Bayes factors unmask highly variable information content, bias, and extreme influence in phylogenomic analyses. Systematic Biology 66(4): 517-530. doi:10.1093/sysbio/syw101

Sep. 18

Noah Reid will lead discussion on this paper today:

Shen, Xing-Xing, Chris Todd Hittinger, and Antonis Rokas. "Contentious relationships in phylogenomic studies can be driven by a handful of genes." Nature Ecology & Evolution 1 (2017): 0126.

https://www.nature.com/articles/s41559-017-0126

We’ll be particularly interested in comparing it to this past Monday’s paper:

Brown, Jeremy M., and Robert C. Thomson. "Bayes factors unmask highly variable information content, bias, and extreme influence in phylogenomic analyses." Systematic biology 66.4 (2016): 517-530.

https://academic.oup.com/sysbio/article-abstract/66/4/517/2950896

Sep. 25

Katie Taylor will lead a discussion of this (very) recent species delimitation paper in Systematic Biology:

Cadena, C. D., Zapata, F., & Jiménez, I. (2017). Issues and Perspectives in Species Delimitation using Phenotypic Data—Atlantean Evolution in Darwin’s Finches. Systematic Biology. DOI 10.1093/sysbio/syx071

Oct. 2

Charlie Delavoi will lead a discussion on the BPP process for species delimitation: http://abacus.gene.ucl.ac.uk/ziheng/pdf/2015YangCZv61p854.pdf

Ziheng Yang; The BPP program for species tree estimation and species delimitation, Current Zoology, Volume 61, Issue 5, 1 October 2015, Pages 854–865, https://doi.org/10.1093/czoolo/61.5.854

Oct. 9

Seminar canceled for today

Oct. 16

Bernard Goffinet will lead the discussion using a study led by Nicholas Magain as part of his Ph.D. at Duke, which deals with species complexes in lichenized fungi. He compares multiple species delimitations in two complexes.

Magain, N., et al. In press. Conserved genomic collinearity as a source of broadly applicable, fast evolving, markers to resolve species complexes: A case study using the lichen-forming genus Peltigera section Polydactylon. Molecular Phylogenetics and Evolution. DOI:10.1016/j.ympev.2017.08.013

Also, for those interested, here is a review of species delimitation methods (in 2015). Note: those on the Systematics-L list received a PDF of this paper (see instructions at the top of this page if you are not currently enrolled in this list and would like to be). Leavitt, SD, CS Moreau, and HT Lumbsch. 2015. The Dynamic Discipline of Species 2 Delimitation: Progress Toward Effectively Recognizing Species Boundaries in Natural Populations. Chapter 2 in DK Upreti et al. (eds.), Recent Advances in Lichenology, Springer India. DOI:10.1007/978-81-322-2235-4_2

Oct. 23

Diler Haji will lead us in a discussion of the paper below:

Ferla, MP, J Cameron Thrash, SJ Giovannoni, and WM Patrick. 2013. New rRNA Gene-Based Phylogenies of the Alphaproteobacteria Provide Perspective on Major Groups, Mitochondrial Ancestry and Phylogenetic Instability. PLoS One 8(12): e83383. doi 10.1371/journal.pone.0083383

The central question for this week is: What exactly is a species of Hodgkinia? Hodgkinia is a cicada-specific alphaproteobacterial endosymbiont within the Rhizobiales that can be more than 20% divergent across its genome and still be considered Hodgkinia. This is a paper looking at alphaproteobacterial phylogeny and the placement of a rhizobiales bacterium.

Oct. 30

Kevin Keegan will lead discussion of:

Beaulieu, Jeremy M., and Brian C. O’Meara 2016 Detecting Hidden Diversification Shifts in Models of Trait-Dependent Speciation and Extinction. Systematic Biology 65(4): 583–601. doi:10.1093/sysbio/syw022

Nov. 6

Paul Lewis will lead discussion of:

Allman, E. S., Kubatko, L. S., & Rhodes, J. A. (2017). Split Scores: A Tool to Quantify Phylogenetic Signal in Genome-Scale Data. Systematic Biology, 66(4), 620–636.

Nov. 13 (today)

Lee Deininger will lead discussion of:

Hadfield, JD, BR Krasnov, R Poulin, and S Nakagawa. 2014. A tale of two phylogenies: comparative analyses of ecological interactions. The American Naturalist 183(2):174-187. doi: 10.1086/674445 (supplementary material at doi: 10.5061/dryad.jf3tj)

Nov. 20

Everyone should contemplate:

Guan X, Silva P, Gyenai KB, Xu J, Geng T, Tu Z, Samuels DC, Smith EJ. 2009. The mitochondrial genome sequence and molecular phylogeny of the turkey, Meleagris gallopavo. Anim Genet. 2009 Apr;40(2):134-41. doi: 10.1111/j.1365-2052.2008.01810.x

Happy Thanksgiving!

Nov. 27

Dec. 4

Information for discussion leaders

Seminar Format: Registered students be prepared to lead discussions, perhaps more than once depending on the number of participants.

The leader(s) will be responsible both for (1) selection of readings, (2) announcing the selection, (3) an introductory presentation, (4) driving discussion and (5) setting up and putting away the projector.

Readings: In consultation with the instructors, each leader should assign one primary paper for discussion and up to two other ancillary papers or resources. The readings should be posted to EEBedia at least 5 days in advance.

Announcing the reading: The leader should add an entry to the schedule (see below) by editing this page. There are two ways to create a link to the paper:

1. If the paper is available online through our library, it is sufficient to create a link to the DOI:

:[http://dx.doi.org/10.1093/sysbio/syv041 Doyle et al. 2015. Syst. Biol. 64:824-837.]

In this case, you need not give all the citation details because the DOI should always be sufficient to find the paper. The colon (:) at the beginning of the link causes the link to be indented an placed on a separate line. Note that the DOI is in the form of a URL, starting with http://dx.doi.org/. Here is how the above link looks embedded in this EEBedia page:

Doyle et al. 2015. Syst. Biol. 64:824-837.

2. If the paper is not available through the library, upload a PDF of the paper to the UConn dropbox, being sure to use the secure version so that it can be password protected. Copy the URL provided by dropbox, and create a link to it as follows (see the Dropbox Test page for other examples):

:[https://dropbox.uconn.edu/dropbox?n=SystBiol-2015-Doyle-824-37.pdf&p=ELPFIc5NtO3c4V44Ls Doyle et al. 2015.]

In this case, you should provide a full citation to the paper for the benefit of those that visit the site long after the dropbox link has expired; however, the full details need not be part of the link text. Here is what this kind of link looks like embedded in this EEBedia page:

Doyle et al. 2015. Full citation: Vinson P. Doyle, Randee E. Young, Gavin J. P. Naylor, and Jeremy M. Brown. 2015. Can We Identify Genes with Increased Phylogenetic Reliability? Systematic Biology 64 (5): 824-837. doi:10.1093/sysbio/syv041

If you have ancillary papers, upload those to the dropbox individually and create separate links.

Finally, send a note to the Systematics Listserv letting everyone know that a paper is available.

Introductory PowerPoint/KeyNote Presentation: Introduce your topic with a 10- to 15-minute PowerPoint or KeyNote presentation. Dedicate at least 2/3 of that time to placing the subject into the broader context of the subject areas/themes and at most 1/3 of it introducing paper, special definitions, taxa, methods, etc. Never exceed 15 minutes. (For example, for a reading on figs and fig-wasps, broaden the scope to plant-herbivore co-evolution.). Add images, include short movie clips, visit web resources, etc. to keep the presentation engaging. Although your presentation should not be a review of the primary reading, showing key figures from the readings may be helpful (and appreciated). You may also want to provide more detail and background about ancillary readings which likely have not been read by all.

Discussion: You are responsible for driving the discussion. Assume everyone in attendance has read the main paper. There are excellent suggestions for generating class discussions on Chris Elphick’s Current Topics in Conservation Biology course site. See section under expectations.

Prepare 3-5 questions that you expect will spur discussion. Ideally, you would distribute questions a day or two before our class meeting.

Projector: The Bamford room has joined the modern world--you should just need to plug in your computer or USB key to project.

Past Seminars