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Scholarly Interest Report
         
Scott Egan
Assistant Professor
Assistant Professor of Ecology and Evolutionary Biology
 
e-mail:Scott.P.Egan@rice.edu
 
  • Ph.D. Biology (2010) Vanderbilt University, Nashville, TN
  • M.S. Biology (2004) Texas State University, San Marcos, TX
  • B.S. Biology (EEB) (1999) University of Texas, Austin, TX
 
Primary Department
   Department of BioSciences
Picture
 
Department Affiliations
 
  • Institute of Biosciences and Bioengineering
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    Websites
     Research Website
     
    Research Areas
     environmental diagnostics, evolution, speciation, population genetics and genomics
     

    The processes that promote or constrain the evolution of new biological species

     

    Egan_research_image.jpg


    I am interested in the processes that promote or constrain the evolution of new biological species. This includes (1) understanding the role of adaptation via natural selection in the speciation process and (2) exploring the genomic architecture associated with and mediating the evolution of new species. This work integrates natural history, manipulative field experiments, behavioral observations, population genetics, and genomics.


    I also collaborate in a large interdisciplinary research group that combines principles of population genetics, ecology, engineering, biogeochemistry, and nanoparticle physics to address important societal challenges, such as the rapid environmental detection of disease or their vectors or invasive species, or quantifying biodiversity. We use environmental DNA sampling combined with targeted species-specific or community-wide metagenetic approaches.


    Pubmed Search for articles by SP Egan

     
    Selected Publications
     Refereed articles
     

    Hood, G.H., L. Zhang, L. Topper, P.F.P. Brandão-Dias F. Pinto, G.A. Del Pino, M.S. Comerford, & S.P. Egan "‘Closing the life cycle’ of Andricus quercuslanigera Ashmead 1881 (Hymenoptera: Cynipidae)." Annals of the Entomological Society of America (2018) Accepted

     
     

    Hood, G.R., & S.P. Egan "Ecological relevance of speciation." Oxford Bibliographies, Oxford Press (2018)

     
     

    Schuler, H., S.P. Egan, G.R. Hood, R.W. Busbee, A. Driscoe & J.R. Ott "Diversity and distribution of Wolbachia in relation to geography, host plant affiliation, and life cycle of a heterogonic gall wasp." BMC Evolutionary Biology (2018) Accepted

     
     

    Cowart, D.A., M.A. Renshaw, C.A. Gantz, J. Umek, S. Chandra, S.P. Egan, D.M. Lodge, & E.R. Larson "Development and field validation of an environmental DNA (eDNA) assay for the invasive Asian clam, Corbicula fluminea (Müller, 1774)." Management of Biological Invasions (2017)

     
     

    Egan S.P., K.L. Weinersmith, S. Liu, R.D. Ridenbaugh, Y.M. Zhang, & A.A. Forbes "Description of a new species of Euderus Haliday from the southeastern United States (Hymenoptera, Chalcidoidea, Eulophidae): the crypt-keeper wasp.." ZooKeys 645 (2017)

     
     

    Egan, S.P "Book review: The web of life, the tangled bank, and the frequency of genetic exchange." BioScience 67 (2017) : 91–92.

     
     

    Feder, J.L. & S.P. Egan "Sympatry and patterns of genetic differentiation in sympatry." Reference Module in Life Sciences (2017)

     
     

    Gompert, Z., S.P. Egan, R. Barrett, J.L. Feder, & P. Nosil "Multi-locus approaches for the measurement of selection on correlated genetic loci." Molecular Ecology 26 (2017) : 365–382.

     
     

    Larson, E.R., M.A. Renshaw, C.A. Gantz, J. Umek, S. Chandra, D.M. Lodge, & S.P. Egan "Using environmental DNA (eDNA) to survey for the crayfishes Orconectes rusticus and Pacifastacus leniusculus between their reciprocal invasive ranges in North America." Hydrobiologia, 800 (2017) : 173-185.

     
     

    Ragland, G., Meyers, P., Doellman, M., Hood, G., Egan, S.P., Powell, T.H.Q., Hahn, D., Nosil, P. & J. Feder "A test of genomic modularity among life history adaptations promoting speciationwith-gene-flow." Molecular Ecology 26 (2017) : 3926-3942.

     
     

    Sim, S., M.M. Doellman, G.R. Hood, W.L. Lee, T.H.Q. Powell, D. Schwarz, R.B. Goughnour, S.P. Egan, G. St. Jean, J.J. Smith, T.E. Arcella, J.D.K, Dzurisin, & J.L. Feder "Genetic evidence for the introduction of Rhagoletis pomonella (Diptera: Tephritidae) into the Northwestern United States." Journal of Economic Entomology (2017)

     
     

    Trebitz, A., J. Hoffman, J. Darling, E. Pilgrim, J. Kelly, J. Schardt, E. Brown, L. Chadderton, S.P. Egan, E. Grey, S. Hashsham, K. Klymus, A. Mahon, J. Ram, M. Schultz, & C. Stepien "Science status and needs for implementing early detection monitoring of aquatic nonindigenous species." Journal of Environmental Management 202 (2017) : 299-310.

     
     

    Weinersmith, K.L., S.M. Liu, A.A. Forbes, & S.P. Egan "Tales from the crypt: A parasitoid manipulates the behavior of its parasite host." Proceedings of the Royal Society, B, 284 (2017)

     
     

    Zhang, L., A. Driscoe, R. Izen, C. Toussaint, J.R. Ott, & S.P. Egan "Immigrant inviability promotes reproductive isolation among host-associated populations of the gall wasp Belonocnema treatae." Entomologia Experimentalis et Applicata, 162 (2017) : 379–388.

     
     

    Dougherty, M.M., E.R. Larson, M.A. Renshaw, C.A. Gantz, S.P. Egan, D.M.Erickson & D.M.Lodge "Environmental DNA (eDNA) detects the invasive rusty crayfish (Orconectes rusticus) at low abundances." Journal of Applied Ecology 53 (2016) : 722–732.

     
     

    Egan, S.P., G.R. Hood, & J.L. Feder "'Speciation-with-gene-flow' In: ." Encyclopdia of Evolutionary Biology (2016)

     
     

    Feder, J.L. & S.P. Egan "Sympatry and patterns of genetic differentiation in sympatry." Reference Module in Life Sciences (2016)

     
     

    Forbes, G.R. Hood, M.C. Hall, J. Lund, R. Izen, S.P. Egan & J.R. Ott "Parasitoids, hyperparasitoids and inquilines associated with the sexual and agamic generations of the oak gall former, Belonocnema treatae (Hymenoptera: Cynipidae)." Annals of the Entomological Society of America 109 (1): 49–63.

     
     

    Lodge, D.M., and 30 coauthors, including S.P. Egan "Risk Analysis and Bioeconomics of Invasive Species to Inform Policy and Management." Annual Review of Environment and Resources 41 (2016) : 453-488.

     
     

    Schuler, H., G.R. Hood, S.P. Egan, & J.L. Feder "Modes and Mechanisms of speciation." Reviews in Cell Biology and Molecular Medicine 2 (2016) : 60–93.

     
     

    Schuler, H., G.R. Hood, S.P. Egan, & J.L. Feder "Modes and Mechanisms of speciation." Reviews in Cell Biology and Molecular Medicine, 2 (2016) : 60-93.

     
     

    Arcella, T, Hood, GR, Powell, THQ, Sim, SB, Yee, WL, Schwarz, D, Egan, SP, Goughnour, RB, Smith, JJ, and Feder, JL. 2015.  Hybridization and the spread of the apple maggot fly, Rhagoletis pomonella (Diptera: Tephritidae), in the northwestern United States.  Evolutionary Applications 8 (8) 834-846.

     
     

    Egan, S.P., G.R. Hood, & J.L. Feder. Ecological divergence promotes reproductive isolation across the genus Rhagoletis, in prep. *target journal: Evolution*

     
     

    Egan, S.P., Gantz, C.A., Renshaw, M.A., Erickson, D., Pfrender, M., Feder, J.L. & D.M Lodge. Ecological forensics: using eDNA to detect diverse taxonomic groups in aquatic ecosystems, in prep. *target journal: Ecological Applications*

     
     

    Egan, SP, Grey, E, Olds, B, Feder, JL, Ruggiero, ST, Tanner, CE, and Lodge, DM.  2015.  Rapid molecular detection of invasive species in ballast and harbor water by integrating environmental DNA and light transmission spectroscopy. Environmental Science & Technology 49 (7) 4113-4121.

     
     

    Egan, SP, Ragland, GJ, Assour, L, Powell, THQ, Hood, GR, Emrich, S, Nosil, P, and  Feder, JL. 2015. Experimental evidence of genome-wide impact of ecological selection during early stages of speciation-with-gene-flow.  Ecology Letters 18 (8) 817-825.

     
     

    Forbes, G.R. Hood, M.C. Hall, J. Lund, R. Izen, S.P. Egan & J.R. Ott. Parasitoids,
    hyperparasitoids and inquilines associated with the sexual and agamic generations of the oak gall
    former, Belonocnema treatae (Hymenoptera: Cynipidae). Annals of the Entomological Society
    of America http://dx.doi.org/10.1093/aesa/sav112

     
     

    Gokhman, VE, Ott, JR and Egan, SP.  2015.  Chromosomes of Belonocnema treatae Mayr, 1881 (Hymenoptera, Cynipidae).  Comparative Cytogenetics 9(2) 221-226

     
     

    Gompert, Z., S.P. Egan, R. Barrett, J.L. Feder, & P. Nosil. The measurement of selection on correlated genetic loci, in review. *target journal: Molecular Ecology – special issue on molecular basis of ecological speciation*

     
     

    Hood, GR; AA Forbes, THQ Powell, SP Egan, GS Hamerlinck, JJ Smith, and JL Feder.  2015. Sequential divergence and the multiplicative origin of community diversity. PNAS 112(44) E5980-9.

     
     

    Lodge, D.M., and 30 coauthors, including S.P. Egan. Risk assessments and bioeconomic analysis of invasive species to inform management of species and vectors, in review. *target journal: Annual Review of Environment and Resources*

     
     

    Ragland, G., Meyers, P., Doellman, M., Hood, G., Egan, S.P., Powell, T.H.Q., Hahn, D., Nosil, P. & J. Feder. A test of genomic modularity among life history adaptations promoting speciationwith- gene-flow, in revision. *target journal: Molecular Ecology*

     
     

    Reynolds, R.J., G. de los Campos, S.P. Egan, & J.R. Ott "Modeling heterogeneity among fitness functions using random regression." Methods in Ecology & Evolution 7: 70–79.

     
     

    Reynolds, R.J., G. de los Campos, S.P. Egan, & J.R. Ott. 2015. Modeling heterogeneity among fitness functions using random regression. Methods in Ecology & Evolution, in press

     
     

    Schuler, H., G.R. Hood, S.P. Egan, & J.L. Feder. 2015. Modes and Mechanisms of speciation. Reviews in Cell Biology and Molecular Medicine, in press.

     
     

    St. Jean, G., G.R. Hood, S.P. Egan, T.H.Q. Powell, H. Schuler, M.M. Doellman, M. Glover, J.J. Smith, W. Yee, R. Goughnour, J. Rull, M. Aluja, & J.L. Feder. Geographic pattern of genetic differentiation among cherry-infesting populations of Rhagoletis fruit flies (Diptera: Tephritidae) in North America, in prep. *target journal: Entomologia Experimentalis et Applicata *

     
     

    Tadeo, E, Feder, JL, Egan, SP, Schuler, H, Aluja, M, and Rull, J 2015. Divergence and evolution of reproductive barriers among three allopatric populations of Rhagoletis cingulata across eastern North America and Mexico. Entomologia Experimentalis et Applicata 156 (3) 301-311

     
     

    Egan, S.P., G.R. Hood, & J.L. Feder. 2015. 'Speciation-with-gene-flow' In: Encyclopdia of
    Evolutionary Biology. Elsevier Press, in press.

     
     

    Feder, J.L., P. Nosil, A. Wacholder, S.P. Egan, S. Berlocher, & S. Flaxman. 2014. Genome-wide congealing and rapid transitions across the speciation continuum during speciation with gene flow. Journal of Heredity 105: 810-820.

     
     

    Ott, J.R. & S.P. Egan. 2014. Interspecific patterns of phenotypic selection do not predict
    intraspecific patterns. Journal of Evolutionary Biology 27: 214-219.

     
     

    Soria-Carrasco, V., Z. Gompert, A.A. Comeault, T.E. Farkas, T.L. Parchman, J.S. Johnson, C.A. Buerkle, J.L. Feder, J. Bast, T. Schwander, S.P. Egan, B.J. Crespi, & P. Nosil.  2014. Stick insect genomes reveal natural selection's role in parallel speciation. Science 344: 738-742.

     
     

    Egan, S.P. Temporal variation in ecological specialization as larvae associated with adult fitness, in review.

     
     

    Egan, S.P., G.R. Hood, G. DeVela, and J.R. Ott. 2013. Parallel patterns of morphological and behavioral variation among host-associated populations of two gall wasp species. PLoS ONE 8: e54690.

     
     

    Egan, S.P., M. Barnes, C.-T. Hwang, A.R. Mahon, J.L. Feder, S. Ruggiero, C. Tanner, and D.L. Lodge. 2013. Rapid invasive species detection by combining environmental DNA with LightTransmission Spectroscopy. 6: 402-409

     
     

    Feder, J., S. Flaxman, S.P. Egan, A. Comeault, and P. Nosil. 2013. Geographic mode of speciation and genomic divergence. Annual Review of Ecology, Evolution, and Systematics 44: 73-97.

     
     

    Feder, J.L., S.M. Flaxman, S.P. Egan, and P. Nosil. 2013. Hybridization and the buildup of genomic divergence during speciation. Journal of Evolutionary Biology 26: 261-266.

     
     

    Feder, J.L., S.P. Egan, & P. Nosil "Speciation and genome evolution." In: Princeton Guide to Evolution (J. Losos, ed.) Princeton University Press, New Jersey

     
     

    Hood, G.R. ,W.Yee, R. Goughnour, S. Sim, S.P. Egan, T. Arcella, G. St. Jean, T.H.Q. Powell, C. Xu and J.L. Feder. 2013. The geographic distribution of Rhagoletis pomonella (Diptera: Tephritidae) in the western United States: Introduced species or native population? Annals of the Entomological Society of America 106: 59-65.

     
     

    Mahon, A.R., M.A. Barnes, F. Li, S.P. Egan, C.E. Tanner, S.T. Ruggiero, J.L. Feder, and D.M. Lodge. 2013. DNA-based species detection capabilities using Laser Transmission Spectroscopy. Journal of the Royal Society Interface 10: 20120637.

     
     

    Ott, J.R. and S.P. Egan. 2014. Interspecific patterns of phenotypic selection do not predict intraspecific patterns. Journal of Evolutionary Biology, doi: 10.1111/jeb.12266. 

     
     

    Reynolds, R.J., G. de los Campos, S.P. Egan, and J.R. Ott. Modeling heterogeneity among fitness functions using random regression.

     
     

    Rull, J., M. Aluja, E. Tadeo, L. Guillen, S.P. Egan, M. Glover, and J.L. Feder. 2013. Distribution, host plant affiliation, phenology, and phylogeny of walnut-infesting Rhagoletis flies (Diptera: Tephritidae) in Mexico. Biological Journal of the Linnean Society 110: 765-779.

     
     

    Saint Jean, G., S.P. Egan, W.L. Yee, and J.L. Feder. 2013. Genetic identification of an unknown Rhagoletis fruit fly infesting Chinese crabapple (Malus spectabilis): Implications for apple pest management. Journal of Economic Entomology 106: 1511-1515

     
     

    Schuler, H., Bertheau, C., Egan, S.P., Feder, J.L., Riegler, M., Schlick-Steiner, B., Steiner, F., Johannesen, J., Kern, P., Koeppler, K., Arthofer, W., & Stauffer, C. 2013. Evidence for a recent horizontal transmission and expansion of Wolbachia from endemic Rhagoletis cerasi to invasive Rhagoletis cingulata in Europe. Molecular Ecology 22: 4101-4111

     
     Book chapters
     

    Egan, S.P., G.R. Hood, & J.L. Feder. 2015. 'Speciation-with-gene-flow' In: Encyclopedia of Evolutionary Biology. Elsevier Press, in press.

     
     

    Feder, J.L. and S.P. Egan. 2013. Sympatry and patterns of genetic differentiation in sympatry. In: Encyclopedia of Genetics, 2nd edition (S. Malloy & K. Hughes, eds.). Elsevier Press.

     
     

    Feder, J.L., S.P. Egan, and P. Nosil. 2013. Speciation and genome evolution. In: Princeton Guide to Evolution (J. Losos, ed.) Princeton University Press, New Jersey.

     
     Other
     
    Egan, S.P. 2015. "Speciation, genomes, & pancakes" Article on Eco-Evolutionary Dynamics
    blog – hosted by Andrew Hendry lab at McGill University.
     
    Presentations
     Invited Talks
     

    Lecturer.  "Ecological speciation among herbivorous insect populations." Annual Meeting of the Society of Population Ecology, Kyushu University, Fukuoka, Japan. (2017)

     
     

    Lecturer.  "How to study ecological speciation." Department of Biology, Texas Southern University, Houston, Texas. (2017)

     
     

    Lecturer.  "Darwin and the five important elements in support of evolution." 2016 Darwin Day Lecture,, Lone Star College – Kingwood, TX. (2016)

     
     

    Lecturer.  "Divergent natural selection promotes reproductive isolation among herbivorous insect populations." Dept. of Biology, University of Memphis. (2016)

     
     

    Doellman, M., S.P. Egan, G. Hood, T.H.Q. Powell, G. Ragland, J.J. Smith & J. Feder Characterizing the genomic architecture of divergence along the speciation continuum in the Rhagoletis pomonella species complex. Entomology Society of America Annual Meeting, Minneapolis, MN (talk).

     
     

    Egan, S.P. Monitoring the dispersal of genetically engineered organisms and their byproducts using Light Transmission Spectroscopy. United States Department of Agriculture - Biotechnology Risk Assessment Research Meetings.

     
     

    Egan, S.P. Parallel genomic change among insect ecotypes. SKYPE SEMINAR Ecological Genomics graduate class – University of Memphis

     
     Lectures
     

    Lecturer.  "Science Café public lecture. ." Science Café public lecture. , Black Lab Pub (Rice College of Nat. Sci.). (December 2017)

     
     Other
     

    Egan, S.P., L. Assour, S. Emrich, P. Nosil, & J.L. Feder. Experimental evidence of
    genome-wide impact of ecological selection during early stages of speciation-with-geneflow.
    Society for the Study of Evolution Annual Meeting, Raleigh, NC.

     
     Posters
     

    Dougherty, M.M., E.R. Larson, M.A. Renshaw, C.A. Gantz, S.P. Egan, D.M. Erickson and D.M. Lodge. Environmental DNA (eDNA) detects the invasive rusty crayfish (Orconectes rusticus) at low abundances. Society for Freshwater Science meeting, Milwaukee, WI

     
     Seminar Speaker
     

    "Ecological divergence promotes reproductive isolation across the genus Rhagoletis." Evolution 2015, June 26-30, 2015, Guaruja, Brazil. (June 29, 2015)

     
     

    "Egan, S.P. Divergent natural selection promotes reproductive isolation among
    herbivorous insect populations. EEB seminar series, Texas A&M University.."

     
     

    "Egan, S.P. Divergent natural selection promotes speciation among
    herbivorous insect populations. Department of Biology, Baylor University.."

     
     

    Egan, S.P., G.R. Hood, and J.R. Ott. Divergent host plant adaptation promotes reproductive isolation among cynipid gall wasp populations. Special Symposium: Guy Bush and Santa Rosalia: Speciation with Gene Flow and the Extraordinary Diversity of Insects. Entomology Society of America Annual Meeting, Austin, TX.

     
     

    Egan, S.P. Divergent natural selection promotes reproductive isolation among herbivorous insect populations. Department of Ecology andn Evolutionary Biology, Rice University, Houston, TX

     
     

    EGan, S.P.  Divergent natural selection promotes reproductive isolation among herbivorous insect populations.  Department of Biology, University of Louisiana, Lafayette.  Lafyette, LA

     
     Workshops
     

    "Egan, S.P. Rapid invasive species detection by combining environmental DNA with
    Light Transmission Spectroscopy. EPA workshop – Molecular detection of invasive
    species, Deluth, MN.."

     
    Supervised Theses & Dissertations
     Michelle Sneck, PhD PhD Dissertation. (Thesis Committee Member)

     Shreyasi Biswas, PhD TBN. (Thesis Committee Member)

     Therese Lamperty, PhD TBD. (Thesis Committee Member)

     Juan Diaz, PhD Analyses of independent evolution on alleles that confer resistance to anticoagulants in US population rodents. (Thesis Committee Member)

     Eslam Elsharat, PhD TBD. (Thesis Committee Member)

     Linyi Zhang, PhD TBD. (Thesis Director)

    Positions Held
     Member, Society for the Study of Evolution. (2015 - 2015)

     Member, Entomological Society of America. (2015 - 2015)

     Member, American Society of Naturalists. (2017 - 2017)

     Member, Society for the Study of Evolution. (2017 - 2017)

     Member, Entomological Society of America. (2017 - 2017)