Publications
Peer-reviewed papers
46. Hermann NT, Hammer LJ, Hussey NE, Marcoux M, Hedges KJ, Walter RP, Furey NB (accepted July 18, 2023) Year-round monitoring of Arctic species of sculpin to identify residency and seasonality of movement behavior. Canadian Journal of Fisheries and Aquatic Sciences, cjfas-2023-0042.R1
45. Timm LE, Tribuzio C, Walter RP, Larson WA, Murray BM, Hussey NE, Wildes S (2023) Molecular ecology of the sleeper shark subgenus Somniosus (Somniosus) reveals genetic homogeneity within species and lack of support for S. antarcticus. Journal of Heredity. esac064, https://doi.org/10.1093/jhered/esac064
44. Graham BA, Heath DD, Pulgarin PC, Walter RP, Mark M, Mennill DJ. (2022) Habitat connectivity, gene flow, and population genetic structure in a Neotropical understory insectivore, the Rufous-and-white Wren. Ornithology. ukac030. https://doi.org/10.1093/ornithology/ukac030
43. Walter RP, Venney CJ, Mandrak NE, Heath DD (2021) Conservation implications of revised genetic structure resulting from new population discovery: the threatened eastern sand darter (Ammocrypta pellucida) in Canada. Journal of Fish Biology. https://doi.org/10.1111/jfb.14922
42. Taboun Z, Walter RP, Ovenden JR, Heath DD (2021) Spatial and temporal genetic variation in an exploited reef fish: the effects of exploitation on cohort genetic structure. Evolutionary Applications, 14: 1286-1300. https://doi.org/10.1111/eva.13198.
41. Swintek MA, Walter RP (2021) Development and characterization of thirteen novel microsatellite markers for use in Greenland sharks (Somniosus microcephalus), with cross-amplification in Pacific sleeper sharks (Somniosus pacificus). BMC Research Notes, 14:28. https://doi.org/10.1186/s13104-021-05447-5
40. Roy, D, Lehnert SJ, Venney CJ, Walter R, Heath DD (2021) NGS-µsat: Bioinformatics framework supporting high throughput microsatellite genotyping from next generation sequencing platforms. Conservation Genetics Resources, 13:161-173. https://doi.org/10.1007/s12686-020-01186-0.
39. Lowe A, Summers AP, Walter RP, Walker S, Paig-Tran EWM (2020) Scale performance and composition in a small Amazonian armored catfish, Corydoras trilineatus. Acta Biomaterialia, S1742-7061(20)30699-1. doi: 10.1016/j.actbio.2020.11.045.
38. Carrillo Muñoz N, Dickson KA, Walter RP (2020) The mitogenome of the California grunion (Leuresthes tenuis). Mitochondrial DNA Part B. 5:1138–1140 doi: 10.1080/23802359.2020.1730254
37. Edwards JE, Broell F, Bushnell PG, Campana SE, Christiansen JS, Devine BM, Gallant JJ, Grant SM, Hedges KJ, Hiltz E, MacNeil MA, McMeans BC, Nielsen J, Præbel K, Skomal GB, Steffensen JF, Walter RP, Watanabe YY, VanderZwaag DL, Hussey NE (2019) Advancing our understanding of long-lived species: A case study on the Greenland shark. Frontiers in Marine Science. 6:87 doi: 10.3389/fmars.2019.00087.
36. Graham BA, Heath DD, Walter RP, Mark MM, Mennill DJ (2018) Parallel evolutionary forces influence the evolution of male and female songs in a tropical songbird. Journal of Evolutionary Biology. 31: 979-994. DOI: 10.1111/jeb.13279
35. Graham BA, Heath DD, Walter RP, Mennill DJ (2018) Immigrant song: males and females learn songs post-dispersal in a tropical bird. Behavioural Ecology 29:711-723.
34. Lisi PJ, Childress ES, Gagne RB, Hain EF, Lamphere BA, Walter RP, Hogan JD, Gilliam JF, Blum MJ, McIntyre PB (2018) Overcoming urban stream syndrome: trophic flexibility confers resilience among Hawaiian stream fishes. Freshwater Biology. 63:492-502. DOI: 10.1111/fwb.13091
33. Balasingham KD, Walter RP, Mandrak NE, Heath DD (2017) Environmental DNA detection of rare and invasive fish species in two Great Lakes tributaries. Molecular Ecology 27:112-127. DOI: 10.1111/mec.14395
32. Kessel ST, Alhasan N, Yurkowski DJ, Walter RP, Klaus R, Chekchak T, Hill G, Hussey NE (2017) Conservation of reef manta rays (Manta alfredi) in a UNESCO World Heritage Site: Large-scale island development or sustainable tourism? PLoS ONE 12(10):e0185419. https://doi.org/10.1371/journal.pone.0185419.
31. Walter RP, Roy D, Hussey NE, Stelbrink B, Kovacs KM, Lydersen C, McMeans BC, Svavarsson J, Kessel ST, Porsmoguer SB, Wildes S, Tribuzio CA, Campana SE, Petersen SD, Grubbs RD, Heath DD, Hedges KJ, Fisk AT (2017) Origins of the Greenland shark (Somniosus microcephalus): impacts of ice-olation and introgression. Ecology and Evolution 7:8113–8125. DOI: 10.1002/ece3.3325
30. Moody KN, Gagne RB, Heim-Ballew H, Alda F, Hain EF, Lisi P, Walter RP, Higashi GR, Hogan JD, McIntyre PB, Gilliam JF, Blum MJ (2017) Invasion hotspots and ecological saturation of streams across the Hawaiian archipelago. Cybium 41:127-156.
29. Hinojosa-Alvarez S, Walter RP, Diaz-Jaimes P, Galván-Magaña F, Paig-Tran EM (2016) A potential third Manta Ray species near the Yucatán Peninsula? Evidence for a recently diverged and novel genetic Manta group from the Gulf of Mexico. PeerJ 4:e2586 https://doi.org/10.7717/peerj.2586
28. Balasingham KD, Walter RP, Heath DD (2016) Residual eDNA detection sensitivity assessed by quantitative real-time PCR in a river ecosystem. Molecular Ecology Resources. DOI: 10.1111/1755-0998.12598
27. Alda F, Gagne RB, Walter RP, Hogan JD, Moody K, Zink F, McIntyre PB, Gilliam JF, Blum MJ (2016) Colonization and demographic expansion of amphidromous stream fauna across the Hawaiian Archipelago. Journal of Evolutionary Biology 29:2054-2069.
26. Roy D, Lucek K, Walter RP, Seehausen O (2015) Hybrid ‘superswarm’ leads to rapid divergence and establishment of populations during a biological invasion. MolecularEcology 24:5394-5411.
25. Carreon-Martinez LB, Walter RP, Johnson TB, Ludsin SA, Heath DD (2015) Benefits of turbid river plume habitat for Lake Erie yellow perch (Perca flavescens) recruitment determined by juvenile to larval genotype assignment. PLoS ONE 10:e0125234.
24. Glass WR, Walter RP, Heath DD, Mandrak NE, Corkum LD (2015) Genetic structure and diversity of Spotted Gar (Lepisosteus oculatus) at its northern range edge: Implications for conservation. Conservation Genetics 16:889-899.
23. Ginson R, Walter RP, Mandrak NE, Beneteau CL, Heath DD (2015) Hierarchical analysis of genetic structure in the habitat-specialist Eastern Sand Darter (Ammocrypta pellucida). Ecology and Evolution 5:695-708.
22. Hussey NE, Cosandey-Godin A, Walter RP, Hedges KJ, VanGerwen-Toyne M, Barkley AN, Kessel ST, Fisk AT (2015) Juvenile Greenland sharks Somniosus microcephalus (Bloch & Schneider, 1801) in the Canadian Arctic. Polar Biology 38:493-504.
21. Walter RP, Gnyra ES, Söderberg LI, Heath DD (2014) Rapid genetic identification of brown bullhead (Ameiurus nebulosus), black bullhead (Ameiurus melas) and their hybrids. Conservation Genetics Resources 6:507-509.
20. Walter RP, Kessel ST, Alhasan N, Fisk AT, Heath DD, Chekchak T, Klaus R, Younis M, Hill G, Jones B, Braun CD, Berumen ML, DiBattista JD, Priest MA, Hussey NE (2014) First record of living Manta alfredi × Manta birostris hybrid. Marine Biodiversity 44:1-2.
19. Smit J, Heath DD, Walter RP (2014) A molecular genetic lab to generate inclusive and exclusive forensic evidence: two suspects, a victim and a bloodstained t-shirt. Biochemistry and Molecular Biology Education 42:230-236.
18. Walter RP, Cena CJ, Morgan GE, Heath DD (2012) Historical and anthropogenic factors affecting the population genetic structure of Ontario's inland lake populations of walleye (Sander vitreus). Journal of Heredity 103:831-841.
17. Herder F, Schliewen UK, Geiger MF, Hadiaty RK, Gray SM, McKinnon JS, Walter RP, Pfaender J (2012) Alien invasion in Wallace's Dreampond: records of the hybridogenic "flowerhorn" cichlid in Lake Matano, with an annotated checklist of fish species introduced to the Malili Lakes system in Sulawesi. Aquatic Invasions 7:521-535. http://www.aquaticinvasions.net/2012/AI_2012_4_Herder_etal.pdf
16. Walter RP, Hogan JD, Blum MJ, Gagne RB, Hain EF, Gilliam JF, McIntyre PB (2012) Climate change and conservation of endemic amphidromous fishes in Hawaiian streams. Endangered Species Research 16:261-272. http://www.int-res.com/abstracts/esr/v16/n3/p261-272
15. Lindstrom DP, Blum MJ, Walter RP, Gagne RB, Gilliam JF (2012) Molecular and morphological evidence of distinct evolutionary lineages of Awaous guamensis in Hawai'i and Guam. Copeia 2012:294-301.
14. Beneteau CL, Walter RP, Mandrak NE, Heath DD (2012) Range expansion by invasion: genetic characterization of invasion of the Greenside Darter (Etheostoma blennioides) at the northern edge of its distribution. Biological Invasions 14:191-121.
13. Walter RP, Hogan JD, Haffner GD, Heath DD (2011) Genetic structure and connectivity among lake populations of threatened Paratherina sailfin silversides from Sulawesi, Indonesia. Conservation Genetics 12:1387-1393.
12. Walter RP, Blum MJ, Snider SB, Paterson IG, Benzten P, Lamphere BA, Gilliam JF (2011) Isolation and differentiation of Rivulus hartii across Trinidad and neighboring islands. Molecular Ecology 20:608-618.
11. Hogan JD, Blum MJ, Walter RP (2011) Characterization of ten novel microsatellite markers in Awaous guamensis with comments on cross amplification in congeners and other amphidromous fish native to Hawai’i. Conservation Genetics Resources 3:275-277.
10. Salas E, Molina H, Walter RP, Heath DD (2010) Local and regional genetic connectivity in a Caribbean coral reef fish. Marine Biology 157: 437–445.
9. Walter RP, Shrimpton JM, Heath DD (2010) Reply to Comment on “Gene flow increases temporal stability of Chinook salmon (Oncorhynchus tshawytscha) populations in the Upper Fraser River, British Columbia, Canada” Canadian Journal of Fisheries and Aquatic Sciences 67:206–208.
8. Hogan JD, Galarza J, Walter RP, Heath DD (2010) Bayesian analysis of population structure and the characterization of nine novel microsatellite markers for the study of a Caribbean coral reef Gobiid (Coryphopterus personatus) and related taxa. Molecular Ecology Resources 10: 404-408.
7. Walter RP, Haffner GD, Heath DD (2009) Dispersal and population genetic structure of Telmatherina antoniae, an endemic freshwater Sailfin silverside from Sulawesi, Indonesia. Journal of Evolutionary Biology 22:314-323. http://onlinelibrary.wiley.com/doi/10.1111/j.1420-9101.2008.01645.x/full
6. Pitcher TE, Beneteau CL, Walter RP, Wilson CC, Mandrak NE, Heath DD (2009) Isolation and characterization of microsatellite loci in the redside dace, Clinostomus elongatus. Conservation Genetics Resources 1: 381-383.
5. Walter RP, Aykanat T, Kelly D, Shrimpton JM, Heath DD (2009) Gene flow increases temporal stability of Chinook salmon (Oncorhynchus tshawytscha) populations in the Upper Fraser River, British Columbia, Canada. Canadian Journal of Fisheries and Aquatic Science 66:167-176.
4. Walter RP, Haffner GD, Heath DD (2009) No barriers to gene flow among sympatric polychromatic ‘small’ Telmatherina antoniae from Indonesia's Lake Matano. Journal of Fish Biology 74:1804-1815.
3. Walter RP, Ovenden JR, Heath DD (2007) Characterization of four tetranucleotide and six dinucleotide microsatellite markers for use in the tropical freshwater fish Telmatherina antoniae and related species. Molecular Ecology Notes 7: 651-653.
2. Walter RP, Haynes JM (2006) Fish and coral community structure are related on shallow water patch reefs near San Salvador, Bahamas. Bulletin of Marine Science 79:365-374.
1. Lowie CE, Haynes JM, Walter RP (2001) Comparison of walleye habitat suitability index (HSI) information with habitat features of a walleye spawning stream. Journal of Freshwater Ecology 16:621-632.
Presentations
Espinosa JA, Walter RP (2023) Snout morphological variation on California pipefishes. Evolution 2023. Virtual Meeting, online presentation.
Swintek MA, Hussey NE, Fisk AT, Walter RP (2021) Arctic sinks: assymetrical gene flow among Greenland shark populations. OSI Symposium. Southern California Academy of Sciences. May 7, 2021.
Espinosa Pico JA, Walter RP (2021) Phylogenetic analysis of Californian Syngnathus pipefishes using full mtDNA genomes. OSI Symposium. Southern California Academy of Sciences. May 7, 2021.
Swintek MA, Hussey NE, Fisk AT, Walter RP (2020) Population genetic variation and admixture in the world’s oldest vertebrate, the Greenland shark. Western Society of Naturalists (WSN) Virtual Meeting. Nov 6-8, 2020.
Espinosa Pico JA, Walter RP (2020) Phylogenetic analysis of Californian Syngnathus pipefishes using full mtDNA genomes. Western Society of Naturalists (WSN) Virtual Meeting. Nov 6-8, 2020.
Swintek MA, Hussey NE, Fisk AT, Walter RP (2020) Population genetic variation and admixture in the world’s oldest vertebrate, the Greenland shark. Ecological Society of America (ESA) Virtual Meeting. Aug 3-6, 2020.
Teeple JB, Naquin T, Ibarra J, Silva M, Whittemore K, Cho A, Burnaford JL, Hoese WJ, Walter RP (2019) A less invasive method for genotyping pipefishes for conservation and population genetics. Society for Advancement of Chicanos/Hispanics and Native Americans in Science (SACNAS) Conference, Honolulu, HI, Nov 1, 2019.
Naquin T, Teeple J, Ibarra J, Whittemore K, Silva M, Cho A, Burnaford JL, Hoese WJ, Walter RP (2019) Comparing genotyping methods and the characterization of two new microsatellite markers in Syngnathus. Southern California Conference for Undergraduate Research (SCCUR). Nov 23, 2019.
Carillo Munoz N, Dickson K, Walter RP (2019) Complete mitochondrial genome of the California grunion (Lauresthes tenuis). Ocean Studies Institute (OSI) Symposium. Poster presentation. Apr 19, 2019
Swintek MA, Walter RP (2019) Ten polymorphic microsatellite markers for use in the Greenland Shark. Ocean Studies Institute (OSI) Symposium. Poster presentation. Apr 19, 2019.
McIntyre SL, Der JP, Zacherl DC, Walter RP (2018) Comparing native and non-native estuarine species: do more tolerant species harbor more genes to combat climate change stress? National Shellfisheries Association, 110th Annual Meeting, Seattle, Washington, March 18-22, 2018.
Walter RP, McIntyre SL, DiBattista JD, Kessel ST, Hussey NE (2017) An evolutionary incubator for Reef Mantas in marginal seas? Fluctuating sea levels in the Red Sea and divergence in Manta Rays. Western Society of Naturalists Meeting (WSN 2017), Nov 16-19, Pasadena, CA, USA.
Swintek MA, Heath DD, Mandrak NE, Walter RP (2017) Postglacial population expansion and connectivity since the Last Glacial Maximum at the northernmost range of the Northern madtom. Poster presentation. WSN 2017, Nov 16-19, Pasadena, CA, USA.
McIntyre SL, NE Hussey, Walter RP (2017) Mitochondrial phylogenomics of Sleeper sharks. Poster presentation. WSN 2017, Nov 16-19, Pasadena, CA, USA.
Kelley M, McIntyre SL, Walter RP, Tracy CR (2017) Twinning in Sauromalus ater (=obesus), Iguanidae. Poster presentation. 2017 Joint Meeting of Ichthyologists & Herpetologists. Austin, TX. July 12-16, 2017.
McIntyre SL, Zacherl DC, Walter RP (2017) Transcriptomic Response to Reduced Salinity and Increased Temperature in Oysters Ostrea lurida and Crassostrea gigas. The Western Society of Malacologists, 50th Annual Meeting, Los Angeles, CA. Jun 19-23, 2017.
McIntyre SL, Der JP, Zacherl DC, Walter RP (2016) Transcriptome response to thermo-osmotic stress in California's native and non-native oysters. Western Society of Naturalists Meeting, Monterey, CA, Nov 11-13, 2016.
*Walter RP (2016) Ice-o-lation with migration: glacially mediated divergence in fishes. California State University Long Beach (CSULB) Biological Sciences Seminar Series. Oct 13, 2016.
*Walter RP (2016) The Ice Age of Fishes: Pleistocene glacial oscillations shape the old into new. California State University Los Angeles (CSULA) Biological Sciences Seminar Series. Oct 11, 2016.
Kessel S, Yurkowski D, Chekchak T, Hill G, Klaus R, Walter R, Hussey N (2016) Spatial use of coastal manta rays (Manta alfredi) in Sudan relative to marine reserve boundaries, and proximity to a proposed coastal development. Joint Meeting of Ichthyologists and Herpetologists, New Orleans, LA, July 6-10, 2016.
Linnenbrink JL, Walter RP, Zacherl DC, Eernisse DJ (2015) Genetic population structure of the Olympia oyster, Ostrea lurida, in Southern California. National Shellfisheries Association 107th Annual Meeting, Monterey, CA, Mar 22-26, 2015.
Linnenbrink JL, Walter RP, Zacherl DC, Eernisse DJ (2014) Genetic population structure of the Olympia oyster, Ostrea lurida, in Southern California. Western Society of Naturalists Meeting, Tacoma, WA, Nov 13-16, 2014.
Hain EF, Lamphere BA, Blum MJ, Gagne RB, Walter RP, Gilliam JF (2014) Within Watershed Population Structure of an Amphidromous Hawaiian Goby. American Fisheries Society (AFS) Quebec August 19, 2014.
Wellband K, Walter RP, Mandrak NE, Fisk AT, Heath DD (2014) Stomach Content DNA from Predatory Fishes: Environmental Sampling of Trophic Relationships. eDNA Symposia, American Fisheries Society (AFS) Quebec. August 19, 2014.
Gagne RB, Sprehn CG, Hogan JD, Walter RP, Blum MJ (2014) Reconstructing population structure of a non-native parasite and a native stream fish host in Hawaii. Annual Meeting of the American Society of Parasitologists. July 27. New Orleans, LA.
Walter RP, Venney C, Gnyra E, Söderberg LI, Heath DD (2013) Massive reticulate evolution in Bullheads (Ameiurus) from the Lower Great Lakes. Canadian Conference for Fisheries Research (CCFFR), Windsor. January 4, 2013.
Walter RP, Roy D, Hogan JD, Olin JA, Hamilton P, Haffner GD, Heath DD (2012) Interlacustrine connectivity and intralacustrine divergence in Paratherina sailfin silversides from Sulawesi's Malili Lakes. Speciation in Ancient Lakes (SIAL) 6. Bogor, Indonesia. August 28, 2012.
Glass WR, Walter RP, Heath DD, Mandrak NE, Corkum LD (2012) Novel molecular phylogeny of the Lepisosteidae and identification of specimens of unknown origin. American Fisheries Society, Ontario Chapter Annual Meeting. Woodview, ON. March 3, 2012
Söderberg LI, Ouellette MJ, Walter RP, Heath DD (2012) Limited gene flow and dispersal in brown bullhead (Ameiurus nebulosus): contaminant effects and local adaptation. Canadian Conference for Fisheries Research (CCFFR), Moncton, NB.
Hogan JD, Walter RP, Gagne RB, Blum MJ, Lindstrom JP, Gilliam JF (2011) Broad- and fine-scale population differentiation in Awaous guamensis. Evolution of Life on Pacific Islands and Reefs: Past, Present and Future. Manoa, HI. May 29, 2011.
Walter RP, Cena CJ, Morgan GE, Heath DD (2011) Natural and human-mediated gene flow among Ontario's inland lake populations of walleye (Sander vitreus). Canadian Conference for Fisheries Research (CCFFR). Toronto, ON. Jan 7, 2011.
Ginson R, Kagabo A, Walter RP, Mandrak NE, Beneteau CL, Heath DD (2011) Genetic structure and gene flow among populations of the threatened Eastern sand darter (Ammocrypta pellucida) in two Canadian rivers. Canadian Conference for Fisheries Research (CCFFR). Toronto, ON. Jan 7, 2011.
Heath DD, Beneteau CL, Walter RP, Mandrak NE, (2011) Range expansion by invasion: genetic characterization of invasion of the Greenside Darter (Etheostoma blennioides) at the northern edge of its distribution. Canadian Conference for Fisheries Research (CCFFR). Toronto, ON. Jan 8, 2011.
Walter RP, Blum MJ, Snider SB, Paterson IG, Bentzen P, Lamphere BA, Gilliam JF (2010) Isolation and differentiation of Rivulus hartii across Trinidad and neighboring islands. Evolution 2010, Portland, OR. June 27, 2010.
*Walter RP (2009) Dispersal and gene flow in the structure of anadromous and freshwater fish populations. University of Queensland, Dept of Biology, Dec 8, 2009. St. Lucia, Australia; Griffith University, Dec. 10, 2009. Brisbane, Australia.
Walter RP (2008) Parallel evolution in radiating taxa. Great Lakes Institute for Environmental Research (GLIER) Symposium. University of Windsor, Windsor, Ontario. April 17, 2008.
*Walter RP (2007) Dispersal and population genetic structure in Telmatherina antoniae. Invited talk, Lehrstuhl für Zoologie/Evolutionsbiologie, Fakultät Biologie, University of Konstanz, Konstanz, Germany. December 17, 2007.
Walter RP, Haffner GD, Heath DD (2007) Dispersal and gene flow in endemic Indonesian Sailfin silversides. Evolution 2007. Christchurch, New Zealand.
Walter RP, Haffner GD, Heath DD (2007) Gene flow among colour-morphs of Indonesian Sailfin silversides: implications for sexual selection in an adaptive radiation. Evolution 2007. Christchurch, New Zealand. Poster presentation.
Walter RP, Haffner GD, Heath DD (2006) Population structure of endemic Telmatherinid Fishes of Sulawesi, Indonesia. Evolution 2006. Stony Brook, New York.
Walter RP, Aykanat T, Shrimpton, JM, Heath DD (2006) Temporal instability in Chinook Salmon populations. Canadian Conference for Fisheries Research (CCFFR). Calgary, Alberta.
Walter RP, Haynes JM (2003) Fish assemblages associated with coral patch reefs at San Salvador, Bahamas. 10th Symposium on the Natural History of the Bahamas. San Salvador, Bahamas.