Highlights of Published Research
by EEB Undergrads

Gonad morphogenesis defects drive hybrid male sterility in asymmetric hybrid breakdown of Caenorhabditis nematodes


Peter and Judy

ROP students Yen-Chu (Judy) Chen (left) and Qi (Peter) Jin (right) stand either side of PhD student Janice Ting

Peter and Judy contributed to this research on the genetics and development of species boundaries as part of their ROP299 research project in Asher Cutter's lab, and presented their findings at the 2013 ROP Poster Fair. 

Paper:
Gonad morphogenesis defects drive hybrid male sterility in asymmetric hybrid breakdown of Caenorhabditis nematodes. Dey, A., Q. Jin, Y.-C. Chen & A.D. Cutter. 2014.  Evolution & Development. In press

 


Intense sperm-mediated sexual conflict promotes gametic isolation in Caenorhabditis nematodes

Gemma (CSB498) and Julia (ROP299)Julia (ROP299)
Gemma (CSB498) and Julia (ROP299) contributed to this research in Asher Cutter's lab on post-mating pre-zygotic isolation of species as part of their research course projects, having previously presented their findings in 2011 at poster fairs at UofT.  

 

Paper:  Intense sperm-mediated sexual conflict promotes gametic isolation in Caenorhabditis nematodes. Ting, J.J.*, G.C. Woodruff*, G. Leung, N.-R. Shin, A.D. Cutter & E.S. Haag. 2014. PLoS Biology. 12: e1001915

 


Specialist versus generalist life histories and nucleotide diversity in Caenorhabditis nematodes

Shuning  EEB397 
Shuning conducted this research in molecular population genetics in Asher Cutter's lab as a UTEA summer research fellow and as part of her EEB397 research course. She presented her findings in a poster at the 2013 EEB Undergraduate Research Fair.  

 

Paper:  Specialist versus generalist life histories and nucleotide diversity in Caenorhabditis nematodes. Li, S.*, R. Jovelin*, T. Yoshiga, R. Tanaka & A.D. Cutter. 2014. Proceedings B (Royal Society of London). 281: 20132858.

 


Stomata size in relation to ploidy level in North American Hawthorns (Crataegus, Rosaceae)

Kelvin Chau 

Student:  Kelvin Chau, Summer NSERC, 2007

Lab: Prof T. Dickinson

Paper: McGoey, Brechann V., Kelvin Chau, and Timothy A. Dickinson. "Stomata Size in Relation to Ploidy Level in North American Hawthorns (Crataegus, Rosaceae)." Madroño 61, no. 2 (2014): 177-193.

 


Molecular hyperdiversity defines populations of the nematode Caenorhabditis brenneri

Cecilia's research course project 

Cecilia contributed to this molecular population genetics study in Asher Cutter's lab as part of her research course project.

Paper: Molecular hyperdiversity defines populations of the nematode Caenorhabditis brenneri. Dey, A., C.K.W. Chan, C.G. Thomas & A.D. Cutter. 2013. PNAS. 110: 11056-11060.

 


Outbreeding depression with low genetic variation in selfing Caenorhabditis nematodes

Shery's ROP299 research course project 

Shery's ROP299 research course project and work as a UTEA summer research fellow on molecular population genetics in Asher Cutter's lab  contributed to this study.

Paper: Outbreeding depression with low genetic variation in selfing Caenorhabditis nematodes. Gimond, C., R. Jovelin, S. Han, C. Ferrari, A.D. Cutter & C. Braendle. 2013. Evolution. 67: 3087-3101.

 


Species richness, distribution and genetic diversity of Caenorhabditis nematodes in a remote tropical rainforest

Shery 

Shery's ROP299 research course project and work as a UTEA summer research fellow on molecular population genetics in Asher Cutter's lab contributed to this study.

Paper: Species richness, distribution and genetic diversity of Caenorhabditis nematodes in a remote tropical rainforest. Felix, M.A., R. Jovelin, C. Ferrari, S. Han, Y.R. Cho, E.C. Andersen, A.D. Cutter & C. Braendle. 2013. BMC Evolutionary Biology. 13: 10.

 


The strength of assortative mating for flowering date and its basis in individual variation in flowering schedule

Erica 

Student:  Erika Nardone, NSERC USRA student.  Recently complete an MSc at the University of Guelph

Lab: Prof.  A.Weis

For two plants to exchange pollen, they have to be in bloom at the same time.  But plants within a population seldom flower in complete synchrony, leading to assortative mating (early bloomers pollinate other early bloomers while lates pollinate lates).  Erica complied a data set on 1500 plants from 31 species growing at the Koffler Scientific Reserve at Jokers Hill that she used to find out which species assort strongly, which do not, and why they differ.  

Paper: Weis, A. E., Nardone, E., & Fox, G. A. (2014). The strength of assortative mating for flowering date and its basis in individual variation in flowering schedule. Journal of Evolutionary Biology.  27 (2014) 2138–2151,  DOI: 10.1111/jeb.12465

 


Stimulation of nectar replenishment by removal: a survey of twelve animal-pollinated species.

Student: Elaine Luo,  EEB498

Lab: Prof.  J.D.Thomson

Paper:  Luo, E., J. E. Ogilvie, J. D. Thomson. 2014.  Stimulation of nectar replenishment by removal: a survey of twelve animal-pollinated species.  Journal of Pollination Ecology 12:52-62


Pollen allelopathy: Taraxacum officinale pollen depresses seed set of montane wildflowers

Student: Deirdre Loughnan, EEB498

Lab: Prof.  J.D.Thomson

Paper:  Loughnan, D., J.D. Thomson, J.E. Ogilvie, and B. Gilbert. 2014. Pollen allelopathy: Taraxacum officinale pollen depresses seed set of montane wildflowers. Journal of Pollination Ecology 13:146-150


Bee- to bird-pollination shifts in Penstemon: effects of floral-lip removal and corolla constriction on bumble bee preference

Student: Jessica Zung

Lab: Prof.  J.D.Thomson

Paper:  Zung, J.L., J.R.K. Forrest, J.D. Thomson, and M.C. Castellanos.  2014.  Bee- to bird-pollination shifts in Penstemon: effects of floral-lip removal and corolla constriction on bumble bee preference.  In press, Evolutionary Ecology


Reduced plant competition amongst kin can be explained by Jensen’s inequality

Student: Theresa Chow, Summer NSERC, and EEB498:

Lab: Prof J.R. Stinchombe

Simonsen, A.K., T. Chow, and J.R. Stinchcombe. 2014. Reduced plant competition amongst kin can be explained by Jensen’s inequality. Ecology and Evolution. In Press.


Quantitative genetic variance and multivariate clines in the Ivyleaf morning glory, Ipomoea hederacea

Amanda 

Student: Amanda Stock,  EEB498

Lab: Prof J.R. Stinchombe

Paper: Stock, A.J., B.E. Campitelli, and J.R. Stinchcombe. 2014. Quantitative genetic variance and multivariate clines in the Ivyleaf morning glory, Ipomoea hederacea. Philosophical Transactions of the Royal Society of London B, 369: 20130259.


The effect of leaf shape on the thermoregulation and frost tolerance of an annual vine

Students: Amanda Gorton and Kate Ostevik’s, EEB 498

Lab: Prof J.R. Stinchombe

Paper: Campitelli, B.E., A.J. Gorton, K.L. Ostevik, and J.R. Stinchcombe. 2013. The effect of leaf shape on the thermoregulation and frost tolerance of an annual vine. American Journal of Botany 100: 2175-2182.


Mutualism variation in the nodulation response to nitrate

Student: Amanda Stock,  Summer NSERC

Lab: Prof J.R. Stinchombe

Paper: Heath, K.D., A.J. Stock, and J.R. Stinchcombe. 2010. Mutualism variation in the nodulation response to nitrate.  Journal of Evolutionary Biology 23: 2494-2500


Crataegus ×ninae-celottiae and C. ×cogswellii (Rosaceae, Maleae), two spontaneously formed intersectional nothospecies

charlotte lin 

Student: Charlotte Lin,  EEB498Y; also EEB304H and 337H

Lab: Prof T. Dickinson

Paper: Christensen, Knud Ib, Mehdi Zarrei, Maria Kuzmina, Nadia Talent, Charlotte Lin, and Timothy A. Dickinson. Crataegus× ninae-celottiae and C.× cogswellii (Rosaceae, Maleae), two spontaneously formed intersectional nothospecies.  PhytoKeys 36 (2014): 1.