Ph.D. Zoology, Southern Illinois University Carbondale, Illinois, 2004
M.S. Biology/Marine Biology, University of Massachusetts Dartmouth, Massachusetts, 1999
B.S. Biology, Bridgewater State College, Massachusetts, 1996

Research Interests: My research utilizes molecular markers to identify the genetic structure of animal populations and determine the ecological and evolutionary causes of the observed genetic patterns. My interests range from the global genetic structure of marine fishes to the differentiation of parasites within individual hosts. By investigating diverse organisms over varying geographic scales, I hope to gain a better understanding of the factors influencing the evolution of animal populations.

Publications:

Radford, D.S., Porreca, A.P., Moody-Carpenter, C.J., Muller, K.A., Keeney, D.B., and R.E. Colombo (2023) Demographics, Reproductive Characteristics, and Genetic Connectivity of Blue Suckers (Cycleptus elongatus) in a Large Tributary. Ichthyology and Herpetology. 111: 416-425.

Keeney, D.B., Cobb, S.A., Jadin, R.C., and S.A. Orlofske (2023) Atypical life cycle does not lead to inbreeding or selfing in parasites despite clonemate accumulation in intermediate hosts. Molecular Ecology. 32:1777-1790. doi:10.1111/mec16837.

Keeney, D.B. and P. Yurco (2021) Fine-scale genetic structure of the freshwater snail Promenetus exacuous in the New York State region: the influences of historical colonization, habitat connectivity and dispersal ability. Journal of Molluscan Studies. 87: eyab014. doi:10.1093/mollus/eyab014

Smith, S.C.F., Colombo, R.E., Thomas, T., and D.B. Keeney (2019) Dissimilar effects of low-head dams on the genetic structure of riverine fishes. Freshwater Science. 38: 92-102.

Boone, E.C., Laursen, J.R., Colombo, R.E., Meiners, S.J., Romani, M.F., and D.B. Keeney (2018) Infection patterns and molecular data reveal host and tissue specificity of Posthodiplostomum species in centrarchid hosts. Parasitology. 145: 1458-1468.

Yurco, P. and D.B. Keeney (2018) Characterization of tri and tetra-nucleotide microsatellite loci for the freshwater snails Promenetus exacuous (Planorbidae) and Valvata tricarinata (Valvatidae) and their utility in population genetic studies. BMC Research Notes. 11: 204.

Souza, M.R., S. Ul-Hasan, and D.B. Keeney (2015) The impact of host dispersal on parasite biogeography. Frontiers of Biogeography. 7: 135-137.

Keeney, D.B., J. Palladino, and R. Poulin (2015). Broad geographic analyses reveal varying patterns of genetic diversity and host specificity among echinostome trematodes in New Zealand snails. Parasitology. 142: 406-415.

Herrmann, K.K., R. Poulin, D.B. Keeney, and I. Blasco-Costa (2014) Genetic structure in a progenetic trematode: signs of cryptic species with contrasting reproductive strategies. International Journal for Parasitology. 44: 811-818.

Day, J.L., D. E. Starkey, G. Adams, S. Brummett, and D. Keeney (2014) Population genetics of grotto sculpin (Cottus specus), a new cave-adapted fish species. Environmental Biology of Fishes. 97:1305-1315.

Keeney, D.B., A.D. Szymaniak, and R. Poulin (2013) Complex genetic patterns and a phylogeographic disjunction among New Zealand mud snails Zeacumantus subcarinatus and Z. lutulentus. Marine Biology. 160:1477-1488.

Koehler, A.V., Y.P.  Springer, H.S. Randhawa, T.L.F. Leung, D.B. Keeney, and R. Poulin (2012) Genetic and phenotypic influences on clone-level success and host specialization in a generalist parasite. Journal of Evolutionary Biology. 25:66-79.

Koehler, A.V., Y.P.  Springer, D.B. Keeney, and R. Poulin (2011) Intra- and interclonal phenotypic and genetic variability of the trematode Maritrema novaezealandensis. Biological Journal of the Linnean Society. 103:106-116.

Donald, K.M., D.B. Keeney, and H.G. Spencer (2011) Contrasting population makeup of two intertidal gastropod species that differ in dispersal opportunities. Journal of Experimental Marine Biology and Ecology. 396:224-232.

Leung, T.L.F., D.B. Keeney, and R. Poulin (2010) Genetics, intensity-dependence, and host manipulation in the trematode Curtuteria australis: following the strategies of others? Oikos. 119:393-400.

Keeney, D.B., T.M. King, D.L. Rowe, and R. Poulin (2009) Contrasting mtDNA diversity and population structure in a direct-developing marine gastropod and its trematode parasites. Molecular Ecology. 18:4591-4603.

Leung, T.L.F., K.M. Donald, D.B. Keeney, A.V. Koehler, R.C. Peoples, and R. Poulin (2009) Trematode parasites of Otago Harbour (New Zealand) soft-sediment intertidal ecosystems: life cycles, ecological roles and DNA barcodes. New Zealand Journal of Marine and Freshwater Research. 43:857-865.

Lagrue, C., R. Poulin, and D.B. Keeney (2009) Effects of clonality in multiple infections on the life-history strategy of the trematode Coitocaecum Parvum in its amphipod intermediate host. Evolution. 63:1417-1426.

Keeney, D.B., K. Bryan-Walker, N. Khan, T.M. King, and R. Poulin (2009) The influence of clonal diversity and intensity-dependence on trematode infections in an amphipod. Parasitology. 136:339-348.

Leung, T.L.F., R. Poulin, and D.B. Keeney (2009) Accumulation of diverse parasite genotypes within the bivalve second intermediate host of the digenean Gymnophallus sp. International Journal for Parasitology. 39:327-331.

Leung, T.L.F., D.B. Keeney, and R. Poulin (2009) Cryptic species complexes in manipulative echinostomatid trematodes: when two become six. Parasitology. 136:241-252.

Leung, T.L.F., T.M. King, R. Poulin, and D.B. Keeney (2008) Ten polymorphic microsatellite loci for the trematode Curtuteria australis (Echinostomatidae). Molecular Ecology Resources. 8:1046-1048.

Keeney, D.B., C. Lagrue, K. Bryan-Walker, N. Khan, T.L.F. Leung, and R. Poulin (2008) The use of fluorescent fatty acid analogs as labels in trematode experimental infections. Experimental Parasitology. 120:15-20.

Keeney, D.B., S. Boessenkool, T.M. King, T.L.F. Leung, and R. Poulin (2008) Effects of interspecific competition on asexual proliferation and clonal genetic diversity in larval trematode infections of snails. Parasitology. 135:741-747.

Keeney, D.B., K. Bryan-Walker, T.M. King, and R. Poulin (2008) Local variation of within-host clonal diversity coupled with genetic homogeneity in a marine trematode. Marine Biology. 154:183-190.

Poulin, R. and D.B. Keeney (2008) Host specificity under molecular and experimental scrutiny. Trends in Parasitology. 24:24-28.

Herrington, S.J., K.N. Hettiger, E.J. Heist, and D.B. Keeney (2008) Hybridization between longnose and alligator gars in captivity, with comments on possible gar hybridization in nature. Transactions of the American Fisheries Society. 137:158-164.

Leung, T.L.F., R. Poulin, and D.B. Keeney (2007) Ten polymorphic microsatellite loci for the trematode Gymnophallus sp. Molecular Ecology Notes. 7:1039-1041.

Lagrue, C., J. McEwan, R. Poulin, and D.B. Keeney (2007) Co-occurrences of parasite clones and altered host phenotype in a snail-trematode system. International Journal for Parasitology. 37:1459-1467.

Keeney, D.B. and R. Poulin (2007) Functional richness, functional evenness, and use of niche space in parasite communities. Journal of Parasitology. 93:216-219.

Keeney, D.B., J.M. Waters, and R. Poulin (2007) Diversity of trematode genetic clones within amphipods and the timing of same-clone infections. International Journal for Parasitology. 37:351-357.

Lagrue, C., J.M. Waters, R. Poulin, and D.B. Keeney (2007) Microsatellite loci for the progenetic trematode Coitocaecum parvum (Opecoelidae). Molecular Ecology Notes. 7:694-696.

Keeney, D.B., J.M. Waters, and R. Poulin (2007) Clonal diversity of the marine trematode Maritrema novaezealandensis within intermediate hosts: the molecular ecology of parasite life cycles. Molecular Ecology. 16:431-439.

Keeney, D.B. and E.J. Heist (2006) Worldwide phylogeography of the blacktip shark (Carcharhinus limbatus) inferred from mitochondrial DNA reveals isolation of western Atlantic populations coupled with recent Pacific dispersal. Molecular Ecology. 15:3669-3679.

Keeney, D.B., J.M. Waters, and R. Poulin (2006) Microsatellite loci for the New Zealand trematode Maritrema novaezealandensis. Molecular Ecology Notes. 6:1042-1044.

Keeney, D.B., M.R. Heupel, R.E. Hueter, and E.J. Heist (2005) Microsatellite and mitochondrial analyses of the genetic structure of blacktip shark (Carcharhinus limbatus) nurseries in the northwestern Atlantic, Gulf of Mexico, and Caribbean Sea. Molecular Ecology. 14:1911-1923.

Hueter, R.E., M.R. Heupel, E.J. Heist, and D.B. Keeney (2005) Evidence of philopatry in sharks and implications for the management of shark fisheries. Journal of Northwest Atlantic Fishery Science. 35:239-247.

Kim, A.K., D.J. Ellis, H.A. Sandler, P. Hart, J.E. Darga, D. Keeney, and T.A. Bewick (2004) Genetic diversity of dodder (Cuscuta spp.) collected from commercial cranberry production as revealed in the trnL (UAA) intron. Plant Molecular Biology Reporter. 22:217-223.

Keeney, D.B. and E.J. Heist (2003) Characterization of microsatellite loci isolated from the blacktip shark and their utility in requiem and hammerhead sharks. Molecular Ecology Notes. 3:501-504.

Keeney, D.B., M.R. Heupel, R.E. Hueter, and E.J. Heist (2003) Genetic heterogeneity among blacktip shark, Carcharhinus limbatus, continental nurseries along the U.S. Atlantic and Gulf of Mexico. Marine Biology. 143:1039-1046.

Heist, E.J., J.L. Jenkot, D.B. Keeney, R.L. Lane, G.R. Moyer, B.J. Reading, and N.L. Smith (2003) Isolation and characterization of polymorphic microsatellite loci in nurse shark (Ginglymostoma cirratum). Molecular Ecology Notes. 3:59-61.

Saunders, A.J., L. Bertram, K. Mullin, A.J. Sampson, K. Latifzai, S. Basu, J. Jones, D. Keeney, L. MacKenzie-Ingano, S. Yu, M.S. Albert, T.J. Moscarillo, R.C.P. Go, S.S. Bassett, M.J. Daly, N.M. Laird, X. Wang, G. Velicelebi, S.L. Wagner, D.K. Becker, R.E. Tanzi, and D. Blacker (2003) Genetic association of Alzheimer’s disease with multiple polymorphisms in alpha-2-macroglobulin. Human Molecular Genetics. 12:2765-2776.

Heist, E.J., E.H. Nicholson, J.T. Sipiorski, and D.B. Keeney (2002) Microsatellite markers for the paddlefish (Polyodon spathula). Conservation Genetics. 3:205-207.

Keeney, D.B. and R.A. Campbell (2001) Grillotia borealis sp. n. (Cestoda: Trypanorhyncha) from five species of Bathyraja (Rajiformes: Arhynchobatidae) in the North Pacific Ocean with comments on parasite enteric distribution. Folia Parasitologica. 48: 21-29.

Bertram, L., S. Guenette, J. Jones, D. Keeney, K. Mullin, A. Crystal, S. Basu, S. Yhu, A. Deng, G. Rebeck, B. Hyman, R. Go, M. McInnis, D. Blacker, and R. Tanzi (2001) No evidence for genetic association or linkage of the cathepsin D (CTSD) exon 2 polymorphism and Alzheimer disease. Annals of Neurology. 49: 114-116.

Bertram, L., D. Blacker, K. Mullin, D. Keeney, J. Jones, S. Basu, S. Yhu, M. McInnis, R. Go, K. Vekrellis, D. Selkoe, A. Saunders, and R. Tanzi (2000) Evidence for genetic linkage of Alzheimer’s disease to chromosome 10q. Science. 290: 2302-2303.

Bertram, L., D. Blacker, A. Crystal, K. Mullin, D. Keeney, J. Jones, S. Basu, S. Yhu, S. Guenette, M. McInnis, R. Go, and R. Tanzi (2000) Candidate genes showing no evidence for association or linkage with Alzheimer’s disease using family-based methodologies. Experimental Gerontology. 35: 1353-1361.

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