Now showing items 1-17 of 17

    • Butterfly genome reveals promiscuous exchange of mimicry adaptations among species 

      Dasmahapatra, Kanchon K; Walters, James R.; Briscoe, Adriana D.; Davey, John W.; Whibley, Annabel; Nadeau, Nicola J.; Zimin, Aleksey V.; Hughes, Daniel S. T.; Ferguson, Laura C.; Martin, Simon H.; Salazar, Camilo; Lewis, James J.; Adler, Sebastian; Ahn, Seung-Joon; Baker, Dean A.; Baxter, Simon W.; Chamberlain, Nicola; Chauhan, Ritika; Counterman, Brian A.; Dalmay, Tamas; Gilbert, Lawrence E.; Gordon, Karl; Heckel, David G.; Hines, Heather M.; Hoff, Katharina J.; Holland, Peter W.H.; Jacquin-Joly, Emmanuelle; Jiggins, Francis M.; Jones, Robert T.; Kapan, Durrell D.; Kersey, Paul; Lamas, Gerardo; Lawson, Daniel; Mapleson, Daniel; Maroja, Luana S.; Martin, Arnaud; Moxon, Simon; Palmer, William J.; Papa, Riccardo; Papanicolaou, Alexie; Pauchet, Yannick; Ray, David A.; Rosser, Neil; Salzberg, Steven L.; Supple, Megan A.; Surridge, Alison; Tenger-Trolander, Ayse; Vogel, Heiko; Wilkinson, Paul A.; Wilson, Derek; Yorke, James A.; Yuan, Furong; Balmuth, Alexi L.; Eland, Cathlene; Gharbi, Karim; Thomson, Marian; Gibbs, Richard A.; Han, Yi; Jayaseelan, Joy C.; Kovar, Christie; Mathew, Tittu; Muzny, Donna M.; Ongeri, Fiona; Pu, Ling-Ling; Qu, Jiaxin; Thornton, Rebecca L.; Worley, Kim C.; Wu, Yuan-Qing; Linares, Mauricio; Blaxter, Mark L.; Constant, Richard H. ffrench; Joron, Mathieu; Kronforst, Marcus; Mullen, Sean P.; Reed, Robert D.; Scherer, Steven E.; Richards, Stephen; Mallet, Jim; McMillan, W. Owen; Jiggins, Chris D. (2012)
      The evolutionary importance of hybridization and introgression has long been debated1. We used genomic tools to investigate introgression in Heliconius, a rapidly radiating genus of neotropical butterflies widely used in ...
    • Evolutionary Novelty in a Butterfly Wing Pattern through Enhancer Shuffling 

      Wallbank, Richard W. R.; Baxter, Simon W.; Pardo-Diaz, Carolina; Hanly, Joseph J.; Martin, Simon H.; Mallet, James; Dasmahapatra, Kanchon K.; Salazar, Camilo; Joron, Mathieu; Nadeau, Nicola; McMillan, W. Owen; Jiggins, Chris D. (Public Library of Science (PLoS), 2016)
      An important goal in evolutionary biology is to understand the genetic changes underlying novel morphological structures. We investigated the origins of a complex wing pattern found among Amazonian Heliconius butterflies. ...
    • Extensive range overlap between heliconiine sister species: evidence for sympatric speciation in butterflies? 

      Rosser, Neil; Kozak, Krzysztof M.; Phillimore, Albert B.; Mallet, James (BioMed Central, 2015)
      Background: Sympatric speciation is today generally viewed as plausible, and some well-supported examples exist, but its relative contribution to biodiversity remains to be established. We here quantify geographic overlap ...
    • Genetic differentiation without mimicry shift in a pair of hybridizing Heliconius species (Lepidoptera: Nymphalidae) 

      Mérot, Claire; Mavárez, Jesús; Evin, Allowen; Dasmahapatra, Kanchon K.; Mallet, James; Lamas, Gerardo; Joron, Mathieu (Wiley-Blackwell, 2013)
      Butterflies in the genus Heliconius have undergone rapid adaptive radiation for warning patterns and mimicry, and are excellent models to study the mechanisms underlying diversification. In Heliconius, mimicry rings typically ...
    • Genome-wide evidence for speciation with gene flow in Heliconius butterflies 

      Martin, S. H.; Dasmahapatra, K. K.; Nadeau, N. J.; Salazar, C.; Walters, J. R.; Simpson, F.; Blaxter, M.; Manica, A.; Mallet, James; Jiggins, C. D. (Cold Spring Harbor Laboratory Press, 2013)
      Most speciation events probably occur gradually, without complete and immediate reproductive isolation, but the full extent of gene flow between diverging species has rarely been characterized on a genome-wide scale. ...
    • Genome-wide introgression among distantly related Heliconius butterfly species 

      Zhang, Wei; Dasmahapatra, Kanchon K.; Mallet, James; Moreira, Gilson R. P.; Kronforst, Marcus R. (BioMed Central, 2016)
      Background: Although hybridization is thought to be relatively rare in animals, the raw genetic material introduced via introgression may play an important role in fueling adaptation and adaptive radiation. The butterfly ...
    • Genomic Hotspots for Adaptation: The Population Genetics of Müllerian Mimicry in Heliconius erato 

      Counterman, Brian A.; Araujo-Perez, Felix; Hines, Heather M.; Baxter, Simon W.; Morrison, Clay M.; Lindstrom, Daniel P.; Papa, Riccardo; Ferguson, Laura; Joron, Mathieu; ffrench-Constant, Richard H.; Smith, Christopher P.; Nielsen, Dahlia M.; Chen, Rui; Jiggins, Chris D.; Reed, Robert D.; Halder, Georg; Mallet, James; McMillan, W. Owen (Public Library of Science (PLoS), 2010)
      Wing pattern evolution in Heliconius butterflies provides some of the most striking examples of adaptation by natural selection. The genes controlling pattern variation are classic examples of Mendelian loci of large effect, ...
    • How reticulated are species? 

      Mallet, James; Besansky, Nora; Hahn, Matthew W. (John Wiley and Sons Inc., 2015)
      Many groups of closely related species have reticulate phylogenies. Recent genomic analyses are showing this in many insects and vertebrates, as well as in microbes and plants. In microbes, lateral gene transfer is the ...
    • Hybrid zones and the speciation continuum in Heliconius butterflies 

      Mallet, James; Dasmahapatra, Kanchon K. (Wiley-Blackwell, 2012)
      Tropical butterflies in the genus Heliconius have long been models in the study of the stages of speciation. Heliconius are unpalatable to predators, and many species are notable for multiple geographic populations with ...
    • Multilocus Species Trees Show the Recent Adaptive Radiation of the Mimetic Heliconius Butterflies 

      Kozak, Krzysztof M.; Wahlberg, Niklas; Neild, Andrew F. E.; Dasmahapatra, Kanchon K.; Mallet, James; Jiggins, Chris D. (Oxford University Press, 2015)
      Müllerian mimicry among Neotropical Heliconiini butterflies is an excellent example of natural selection, associated with the diversification of a large continental-scale radiation. Some of the processes driving the evolution ...
    • New genomes clarify mimicry evolution 

      Mallet, James (Nature Publishing Group, 2015)
      For over 100 years, it has been known that polymorphic mimicry is often switched by simple mendelian factors, yet the physical nature of these loci had escaped characterization. Now, the genome sequences of two swallowtail ...
    • Selective Bird Predation on the Peppered Moth: The Last Experiment of Michael Majerus 

      Cook, Laurence M.; Grant, Bruce S.; Saccheri, Ilik J.; Mallet, Jim (The Royal Society, 2012)
      Colour variation in the peppered moth Biston betularia was long accepted to be under strong natural selection. Melanics were believed to be fitter than pale morphs because of lower predation at daytime resting sites on ...
    • Speciation: Frog Mimics Prefer Their Own 

      Mallet, James (Elsevier BV, 2014)
      Ranitomeya poison frogs in the Peruvian Amazon mimic one another, a rare example of Müllerian mimicry in vertebrates. In Ranitomeya imitator, courtship is more likely between same-coloured mimics than between differently ...
    • The struggle for existence. How the notion of carrying capacity, K, obscures the links between demography, Darwinian evolution and speciation 

      Mallet, James (2012)
      Question: Population ecology and population genetics are treated separately in most textbooks. However, Darwin’s term the ‘struggle for existence’ included both natural selection and ecological competition. Using the ...
    • Unraveling the thread of nature’s tapestry: the genetics of diversity and convergence in animal pigmentation 

      Kronforst, Marcus; Barsh, Gregory S.; Kopp, Artyom; Mallet, James; Monteiro, Antónia; Mullen, Sean P.; Protas, Meredith; Rosenblum, Erica B.; Schneider, Christopher; Hoekstra, Hopi E. (Wiley-Blackwell, 2012)
      Animals display incredibly diverse color patterns yet little is known about the underlying genetic basis of these phenotypes. However, emerging results are reshaping our view of how the process of phenotypic evolution ...
    • What Is Speciation? 

      Shapiro, B. Jesse; Leducq, Jean-Baptiste; Mallet, James (Public Library of Science, 2016)
      Concepts and definitions of species have been debated by generations of biologists and remain controversial. Microbes pose a particular challenge because of their genetic diversity, asexual reproduction, and often promiscuous ...
    • Wing patterning gene redefines the mimetic history of Heliconius butterflies 

      Hines, H. M.; Counterman, B. A.; Papa, R.; Albuquerque de Moura, P.; Cardoso, M. Z.; Linares, M.; Mallet, James; Reed, R. D.; Jiggins, C. D.; Kronforst, M. R.; McMillan, W. O. (Proceedings of the National Academy of Sciences, 2011)
      The mimetic butterflies Heliconius erato and Heliconius melpomene have undergone parallel radiations to form a near-identical patchwork of over 20 different wing-pattern races across the Neotropics. Previous molecular ...