The scale of divergence: A phylogenetic appraisal of intercontinental allopatric speciation in a passively dispersed freshwater zooplankton genus

Molecular Phylogenetics and Evolution

Volumn 50, Issue 3, 2009, Pages 423-436

  Adamowicz, Sarah J ^a   Petrusek, Adam ^b   Colbourne, John K ^c   Hebert, Paul D N ^d   Witt, Jonathan D S ^a  

^a UNIVERSITY OF WATERLOO   (Canada)

^b CHARLES UNIVERSITY   (Czech Republic)

^c INDIANA UNIVERSITY   (United States)

^d UNIVERSITY OF GUELPH   (Canada)

Author keywords

12S; 16S; Biogeography; Cladocera; COI; Long distance dispersal; Mitochondrial DNA; Molecular systematics; Passive dispersal; Zooplankton

Indexed keywords

MITOCHONDRIAL DNA;

ANIMAL; ARTICLE; CLASSIFICATION; DAPHNIA; DNA SEQUENCE; GENETIC MARKER; GENETICS; GEOGRAPHY; MOLECULAR EVOLUTION; PHYLOGENY; SEQUENCE ALIGNMENT; SPECIES DIFFERENTIATION; ZOOPLANKTON;

ANIMALS; DAPHNIA; DNA, MITOCHONDRIAL; EVOLUTION, MOLECULAR; GENETIC MARKERS; GENETIC SPECIATION; GEOGRAPHY; PHYLOGENY; SEQUENCE ALIGNMENT; SEQUENCE ANALYSIS, DNA; ZOOPLANKTON;

AVES; CLADOCERA; DAPHNIA;

EID: 60349097125     PISSN: 10557903     EISSN: 10959513     Source Type: Journal    
DOI: 10.1016/j.ympev.2008.11.026     Document Type: Article

References (138)

1. Adamowicz S.J., and Purvis A. How many branchiopod crustacean species are there? Quantifying the components of underestimation. Global Ecol. Biogeogr. 14 (2005) 455-468
2. Adamowicz S.J., Gregory T.R., Marinone M.C., and Hebert P.D.N. New insights into the distribution of polyploid Daphnia: the Holarctic revisited and Argentina explored. Mol. Ecol. 11 (2002) 1209-1217
3. Adamowicz S.J., Hebert P.D.N., and Marinone M.C. Species diversity and endemism in the Daphnia of Argentina: a genetic investigation. Zool. J. Linn. Soc. 140 (2004) 171-205
4. Avise J.C. Phylogeography: The History and Formation of Species (2000), Harvard University Press, Cambridge, MA, USA
5. Avise J.C., and Ball R.M. Principles of genealogical concordance in species concepts and biological taxonomy. In: Futuyma D.J., and Antonovics J. (Eds). Oxford Surveys in Evolutionary Biology (1990), Oxford University Press, Oxford 45-67
6. Barraclough T.G., and Nee S. Phylogenetics and speciation. Trends Ecol. Evol. 16 (2001) 391-399
7. Barker F.K., and Lutzoni F.M. The utility of the incongruence length difference test. Syst. Biol. 51 (2002) 625-637
8. Beaton M.J., and Hebert P.D.N. Geographical parthenogenesis and polyploidy in Daphnia pulex. Am. Nat. 132 (1988) 837-845
9. Bernatchez L., and Wilson C.C. Comparative phylogeography of nearctic and palearctic fishes. Mol. Ecol. 7 (1998) 431-452
10. Boileau M.G., and Hebert P.D.N. Genetic differentiation of freshwater pond copepods at arctic sites. Hydrobiologia 167-168 (1988) 393-400
11. Boileau M.G., and Hebert P.D.N. Genetic consequences of passive dispersal in pond-dwelling copepods. Evolution 45 (1991) 721-733
12. Boileau M.G., Hebert P.D.N., and Schwartz S.S. Nonequilibrium gene-frequency divergence-persistent founder effects in natural populations. J. Evol. Biol. 5 (1992) 25-39
13. Brower A.V.Z. Rapid morphological radiation and convergence among races of the butterfly Heliconius erato inferred from patterns of mitochondrial DNA evolution. Proc. Natl. Acad. Sci. USA 91 (1994) 6491-6495
14. Brown W.M., George M., and Wilson A.C. Rapid evolution of animal mitochondrial DNA. Proc. Natl. Acad. Sci. USA 76 (1979) 1967-1971
15. Brtek J., and Mura G. Revised key to families and genera of the Anostraca with notes on their geographical distribution. Crustaceana 73 (2000) 1037-1088
16. Černý M., and Hebert P.D.N. Intercontinental allozyme differentiation among four holarctic Daphnia species. Limnol. Oceanogr. 44 (1999) 1381-1387
17. Colbourne J.K., and Hebert P.D.N. The systematics of North American Daphnia (Crustacea: Anomopoda): a molecular phylogenetic approach. Philos. Trans. R. Soc. Lond. B 351 (1996) 349-360
18. Colbourne J.K., Hebert P.D.N., and Taylor D.J. Evolutionary origins of phenotypic diversity in Daphnia. In: Givnish T.J., and Sytsma K.J. (Eds). Molecular Evolution and Adaptive Radiation (1997), Cambridge University Press 163-188
19. Colbourne J.K., Crease T.J., Weider L.J., Hebert P.D.N., Dufresne F., and Hobæk A. Phylogenetics and evolution of a circumarctic species complex (Cladocera: Daphnia pulex). Biol. J. Linn. Soc. 65 (1998) 347-365
20. Colbourne J.K., Wilson C.C., and Hebert P.D.N. The systematics of Australian Daphnia and Daphniopsis (Crustacea: Cladocera): a shared phylogenetic history transformed by habitat-specific rates of evolution. Biol. J. Linn. Soc. 89 (2006) 469-488
21. Cooper A., and Fortey R.A. Evolutionary explosions and the phylogenetic fuse. Trends Ecol. Evol. 13 (1998) 151-156
22. Cox A., and Hebert P.D.N. Colonization, extinction, and phylogeographic patterning in a freshwater crustacean. Mol. Ecol. 10 (2001) 371-386
23. Cracraft J. Avian evolution, Gondwana biogeography and the Cretaceous-Tertiary mass extinction event. Proc. R. Soc. Lond. B 268 (2001) 459-469
24. Crease T.J. The complete sequence of the mitochondrial genome of Daphnia pulex (Cladocera: Crustacea). Gene 233 (1999) 89-99
25. Dartnall H.J.G., Hollwedel W., and de Paggi J.C. The freshwater fauna of Macquarie Island, including a redescription of the endemic water-flea Daphnia gelida (Brady) (Anomopoda: Crustacea). Polar Biol. 28 (2005) 922-939
26. Darwin C. On the Origin of Species by Means of Natural Selection (1859), John Murray, London
27. Darwin C. On the dispersal of freshwater bivalves. Nature 15 (1882) 529-530
28. De Gelas K., and De Meester L. Phylogeography of Daphnia magna in Europe. Mol. Ecol. 14 (2005) 753-764
29. De Meester L., Gómez A., Okamura B., and Schwenk K. The monopolization hypothesis and the dispersal-gene flow paradox in aquatic organisms. Acta Oecol. 23 (2002) 121-135
30. De Melo R., and Hebert P.D.N. Allozymic variation and species diversity in North American Bosminidae. Can. J. Fish. Aquat. Sci. 51 (1994) 873-880
31. Denver D.R., Morris K., Lynch M., Vassilieva L.L., and Thomas W.K. High direct estimate of the mutation rate in the mitochondrial genome of Caenorhabditis elegans. Science 289 (2000) 2342-2344
32. De Rijk P., and De Wachter R. DCSE, an interactive tool for sequence alignment and secondary structure research. CABIOS 9 (1993) 735-740
33. deWaard J.R., Sacherová V., Cristescu M.E.A., Remigio E.A., Crease T.J., and Hebert P.D.N. Probing the relationships of the branchiopod crustaceans. Mol. Phylogenet. Evol. 39 (2006) 491-502
34. Drummond A.J., Ho S.Y.W., Phillips M.J., and Rambaut A. Relaxed phylogenetics and dating with confidence. PLoS Biol. 4 5 (2006) e88 (pp. 699-710)
35. Dufresne F., and Hebert P.D.N. Hybridization and origins of polyploidy. Proc. R. Soc. Lond. B 258 (1994) 141-146
36. Dufresne F., and Hebert P.D.N. Pleistocene glaciations and polyphyletic origins of polyploidy in an arctic cladoceran. Proc. R. Soc. Lond. B 264 (1997) 201-206
37. Dufresne F., and Hebert P.D.N. Temperature-related differences in life-history characteristics between diploid and polyploid clones of the Daphnia pulex complex. Écoscience 5 (1998) 433-437
38. Ebert D., Haag C., Kirkpatrick M., Riek M., Hottinger J.W., and Pajunen V.I. A selective advantage to immigrant genes in a Daphnia metapopulation. Science 295 (2002) 485-488
39. Emerson B.C. Alarm bells for the molecular clock? No support for Ho et al'.s model of time-dependent molecular rate estimates. Syst. Biol. 56 (2007) 337-345
40. Figuerola J., Green A.J., and Michot T.C. Invertebrate eggs can fly: evidence of waterfowl-mediated gene flow in aquatic invertebrates. Am. Nat. 165 (2005) 274-280
41. Finlay B.J. Global dispersal of free-living microbial eukaryote species. Science 296 (2002) 1061-1063
42. Finlay B.J., and Clarke K.J. Ubiquitous dispersal of microbial species. Nature 400 (1999) 828
43. Finlay B.J., and Fenchel T. Cosmopolitan metapopulations of free-living microbial eukaryotes. Protist 155 (2004) 237-244
44. Finlay B.J., Esteban G.F., Brown S., Fenchel T., and Hoef-Emden K. Multiple cosmopolitan ecotypes within a microbial eukaryotic morphospecies. Protist 157 (2006) 377-390
45. Flößner D. A pedomorphic form type of Daphnia triquetra Sars, 1903 (Cladocera, Daphniidae) from Mongolia. Hydrobiologia 145 (1987) 47-49
46. Folmer O., Black M., Hoeh W., Lutz R., and Vrijenhoek R. DNA primers for amplification of mitochondrial cytochrome C oxidase subunit I from diverse metazoan invertebrates. Mol. Mar. Biol. Biotechnol. 3 (1994) 294-299
47. Fontaneto D., Barraclough T.G., Chen K., Ricci C., and Herniou E.A. Molecular evidence for broad-scale distributions in bdelloid rotifers: everything is not everywhere but most things are very widespread. Mol. Ecol. 17 (2008) 3136-3146
48. Forró L., Korovchinsky N.M., Kotov A.A., and Petrusek A. Global diversity of cladocerans (Cladocera; Crustacea) in freshwater. Hydrobiologia 595 (2008) 177-184
49. Freeland J.R., Romualdi C., and Okamura B. Gene flow and genetic diversity: a comparison of freshwater bryozoan populations in Europe and North America. Heredity 85 (2000) 498-508
50. Freeland J.R., Noble L.R., and Okamura B. Genetic consequences of the metapopulation biology of a facultatively sexual freshwater invertebrate. J. Evol. Biol. 13 (2000) 383-395
51. Frey D.G. Questions concerning cosmopolitanism in Cladocera. Arch. Hydrobiol. 93 (1982) 484-502
52. Frey D.G. The taxonomy and biogeography of the Cladocera. Hydrobiologia 145 (1987) 5-17
53. Fryer G. A daphniid ephippium (Branchiopoda: Anomopoda) of Cretaceous age. Zool. J. Linn. Soc. 102 (1991) 163-167
54. Gómez A., Carvalho G.R., and Lunt D.H. Phylogeography and regional endemism of a passively dispersing zooplankter: mitochondrial DNA variation in rotifer resting egg banks. Proc. R. Soc. Lond. B 267 (2000) 2189-2197
55. Hann B.J. Revision of the genus Daphniopsis Sars, 1903 (Cladocera: Daphniidae) and a description of Daphniopsis chilensis, new species, from South America. J. Crust. Biol. 6 (1986) 246-263
56. Hann B.J. Genetic variation in Simocephalus (Anomopoda: Daphniidae) in North America: patterns and consequences. Hydrobiologia 307 (1995) 9-14
57. Havel J.E., Colbourne J.K., and Hebert P.D.N. Reconstructing the history of intercontinental dispersal in Daphnia lumholtzi by use of genetic markers. Limnol. Oceanogr. 45 (2000) 1414-1419
58. Hebert P.D.N. A revision of the taxonomy of the genus Daphnia (Crustacea: Daphniidae) in south-eastern Australia. Aust. J. Zool. 25 (1977) 371-398
59. Hebert P.D.N. The Daphnia of North America-An Illustrated Fauna. CD-ROM Distributed by the Author (1995), University of Guelph, Guelph, Ont., Canada
60. Hebert P.D.N., and Finston T.L. A taxonomic reevaluation of North American Daphnia (Crustacea: Cladocera). I. The D. similis complex. Can. J. Zool. 71 (1993) 908-925
61. Hebert P.D.N., and Finston T.L. A taxonomic reevaluation of North American Daphnia (Crustacea: Cladocera). II. New species in the Daphnia pulex group from the south-central United States and Mexico. Can. J. Zool. 74 (1996) 632-653
62. Hebert P.D.N., and Finston T.L. A taxonomic reevaluation of North American Daphnia (Crustacea: Cladocera). III. The D. catawba complex. Can. J. Zool. 75 (1997) 1254-1261
63. Hebert P.D.N., and Wilson C.C. Provincialism in plankton: endemism and allopatric speciation in Australian Daphnia. Evolution 48 (1994) 1333-1349
64. Hebert P.D.N., and Wilson C.C. Diversity of the genus Daphniopsis in the saline waters of Australia. Can. J. Zool. 78 (2000) 794-808
65. Hebert P.D.N., Schwartz S.S., and Hrbáček J. Patterns of genotypic diversity in Czechoslovakian Daphnia. Heredity 62 (1989) 207-216
66. Hebert P.D.N., Remigio E.A., Colbourne J.K., Taylor D.J., and Wilson C.C. Accelerated molecular evolution in halophilic crustaceans. Evolution 56 (2002) 909-926
67. Hebert P.D.N., Witt J.D.S., and Adamowicz S.J. Phylogeographical patterning in Daphnia ambigua: regional divergence and intercontinental cohesion. Limnol. Oceanogr. 48 (2003) 261-268
68. Hedges S.B., Parker P.H., Sibley C.G., and Kumar S. Continental breakup and the ordinal diversification of birds and mammals. Nature 381 (1996) 226-229
69. Ho S.Y.W., Phillips M.J., Cooper A., and Drummond A.J. Time dependency of molecular rate estimates and systematic overestimation of recent divergence times. Mol. Biol. Evol. 22 (2005) 1561-1568
70. Hobæk A., and Wolf H.G. Ecological genetics of Norwegian Daphnia. II. Distribution of Daphnia longispina genotypes in relation to short-wave radiation and water colour. Hydrobiologia 225 (1991) 229-243
71. Hrbáček, J. 1987. Systematics and biogeography of Daphnia species in the northern temperate region. In: Peters, R.H., de Bernardi, R., (Eds.) "Daphnia". Mem. Ist. Ital. Idrobiol. 45, 37-76.
72. Hudec I. A comparison of populations from the Daphnia similis group (Cladocera, Daphniidae). Hydrobiologia 225 (1991) 9-22
73. Hudec I. Redescription of Daphnia deserti (Gauthier, 1937) (Crustacea, Daphniiformes, Daphniidae). Hydrobiologia 264 (1993) 153-158
74. Huelsenbeck J.P., and Ronquist F. MRBAYES: Bayesian inference of phylogenetic trees. Bioinformatics 17 (2001) 754-755
75. Ishida S., and Taylor D.J. Quaternary diversification in a sexual Holarctic zooplankter, Daphnia galeata. Mol. Ecol. 16 (2007) 569-582
76. Ishida S., Kotov A.A., and Taylor D.J. A new divergent lineage of Daphnia (Cladocera: Anomopoda) and its morphological and genetical differentiation from Daphnia curvirostris Eylmann, 1887. Zool. J. Linn. Soc. 146 (2006) 385-405
77. Johnson D.S. The British species of the genus Daphnia (Crustacea: Cladocera). Proc. Zool. Soc. London 122 (1952) 435-462
78. Kimura M. A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences. J. Mol. Evol. 16 (1980) 111-120
79. Knowlton N., and Weigt L.A. New dates and new rates for divergence across the Isthmus of Panama. Proc. R. Soc. Lond. B 265 (1998) 2257-2263
80. Kořínek V. A guide to limnetic species of Cladocera of African inland waters (Crustacea, Branchiopoda). Societias Internationalis Limnologiae Occasional Publication 1 (1999) 55
81. Kořínek V., and Hebert P.D.N. A new species complex of Daphnia (Crustacea, Cladocera) from the Pacific Northwest of the United States. Can. J. Zool. 74 (1996) 1379-1393
82. Kořínek V., and Villalobos L. Two South American endemic species of Daphnia from Andean lakes. Hydrobiologia 490 (2003) 107-123
83. Kořínek V., Černý M., and Petrusek A. Daphnia obtusa Kurz, 1874: Komplex kryptických druhů-nový problém populační ekologie. [Daphnia obtusa Kurz, 1874: a complex of cryptic species-new challenge for population ecology.]. Acta Facultatis Ecologiae (Zvolen) 10 Suppl. 1 (2003) 113-114 (in Czech)
84. Kotov A.A., Ishida S., and Taylor D.J. A new species in the Daphnia curvirostris (Crustacea: Cladocera) complex from the eastern Palearctic with molecular phylogenetic evidence for the independent origin of neckteeth. J. Plankton Res. 28 (2006) 1067-1079
85. Lieder U. Revision of the genus Bosmina Baird, 1845 (Crustacea, Cladocera). Int. Rev. Ges. Hydrobiol. 68 (1983) 121-139
86. Losos J.B., and Glor R.E. Phylogenetic comparative methods and the geography of speciation. Trends Ecol. Evol. 18 (2003) 220-227
87. Louette G., and De Meester L. High dispersal capacity of cladoceran zooplankton in newly founded communities. Ecology 86 (2005) 353-359
88. Lynch M., and Jarrell P.E. A method for calibrating molecular clocks and its application to animal mitochondrial DNA. Genetics 135 (1993) 1197-1208
89. Maddison, W.P, Maddison, D.R., 2007. Mesquite: a modular system for evolutionary analysis, version 2.0. Available from: .
90. Marková S., Dufresne F., Rees D.J., Černý M., and Kotlík P. Cryptic intercontinental colonization in water fleas Daphnia pulicaria inferred from phylogenetic analysis of mitochondrial DNA variation. Mol. Phylogenet. Evol. 44 (2007) 42-52
91. Mayr E. Animal Species and Evolution (1963), Harvard University Press, Cambridge, Massachusetts, USA
92. Mergeay J., Verschuren D., and De Meester L. Invasion of an asexual American water flea clone throughout Africa and rapid displacement of a native sibling species. Proc. R. Soc. B 273 (2006) 2839-2844
93. Mergeay J., Vanoverbeke J., Verschuren D., and De Meester L. Extinction, recolonization, and dispersal through time in a planktonic crustacean. Ecology 88 (2007) 3032-3043
94. Mergeay J., Aguilera X., Declerck S., Petrusek A., Huyse T., and De Meester L. The genetic legacy of polyploid Bolivian Daphnia: the tropical Andes as a source for the North and South America D. pulicaria complex. Mol. Ecol. 17 (2008) 1789-1800
95. Michels E., Audenaert E., Ortells R., and De Meester L. Population genetic structure of three pond-inhabiting Daphnia species on a regional scale (Flanders, Belgium). Freshw. Biol. 48 (2003) 1825-1839
96. Milá B., Smith T.B., and Wayne R.K. Postglacial population expansion drives the evolution of long-distance migration in a songbird. Evolution 60 (2006) 2403-2409
97. Nei M. Estimation of average heterozygosity and genetic distance from a small number of individuals. Genetics 89 (1978) 583-590
98. Nilssen J.P., Hobæk A., Petrusek A., and Skage M. Restoring Daphnia lacustris G.O. Sars, 1862 (Crustacea, Anomopoda): a cryptic species in the Daphnia longispina group. Hydrobiologia 594 (2007) 5-17
99. Olesen J. A phylogenetic analysis of the Conchostraca and Cladocera (Crustacea, Branchiopoda, Diplostraca). Zool. J. Linn. Soc. 122 (1998) 491-536
100. Olesen J. An updated phylogeny of the Conchostraca-Cladocera clade (Branchiopoda, Diplostraca). Crustaceana 73 (2000) 869-886
101. Palumbi S. Nucleic acids II: the polymerase chain reaction. In: Hillis D.M., Moritz C., and Mable B.K. (Eds). Molecular Systematics (1996), Sinauer Associates Inc., Sunderland, MA, USA 205-247
102. Penton E.H., Hebert P.D.N., and Crease T.J. Mitochondrial DNA variation in North American populations of Daphnia obtusa: continentalism or cryptic endemism?. Mol. Ecol. 13 (2004) 97-107
103. Petrusek A. The population of Daphnia similis species complex in Germany after 110 years-a new case of species introduction?. Senck. biol. 82 (2003) 11-14
104. Petrusek A., Černý M., and Audenaert E. Large intercontinental differentiation of Moina micrura (Crustacea: Anomopoda): one less cosmopolitan cladoceran?. Hydrobiologia 526 (2004) 73-81
105. Petrusek A., Černý M., Mergeay J., and Schwenk K. Daphnia in the Tatra Mountain lakes: multiple colonisation and hidden species diversity revealed by molecular markers. Fundam. Appl. Limnol. 169 (2007) 279-291
106. Petrusek A., Hobæk A., Nilssen J.P., Skage M., Černý M., Brede N., and Schwenk K. A taxonomic reappraisal of the European Daphnia longispina complex (Crustacea, Cladocera, Anomopoda). Zool. Scr. 37 (2008) 507-519
107. Pfrender M.E., Spitze K., and Lehman N. Multi-locus genetic evidence for rapid ecologically based speciation in Daphnia. Mol. Ecol. 9 (2000) 1717-1735
108. Posada D., and Crandall K.A. Modeltest: testing the model of DNA substitution. Bioinformatics 14 (1998) 817-818
109. Richter S., Olesen J., and Wheeler W.C. Phylogeny of Branchiopoda (Crustacea) based upon a combined analysis of morphological data and six molecular loci. Cladistics 23 (2007) 301-336
110. Rowe C.L., Adamowicz S.J., and Hebert P.D.N. Three new cryptic species of the freshwater zooplankton genus Holopedium (Crustacea: Branchiopoda: Ctenodpoda), revealed by genetic methods. Zootaxa 1656 (2007) 1-49
111. Ruegg K.C., Hijmans R.J., and Moritz C. Climate change and the origin of migratory pathways in the Swainson's thrush, Catharus ustulatus. J. Biogeogr. 33 (2006) 1172-1182
112. Sacherová V., and Hebert P.D.N. The evolutionary history of the Chydoridae (Crustacea: Cladocera). Biol. J. Linn. Soc. 79 (2003) 629-643
113. Schwenk K., Sand A., Boersma M., Brehm M., Mader E., Offerhaus D., and Spaak P. Genetic markers, genealogies and biogeographic patterns in the cladocera. Aquat. Ecol. 32 (1998) 37-51
114. Schwenk K., Posada D., and Hebert P.D.N. Molecular systematics of European Hyalodaphnia: the role of contemporary hybridization in ancient species. Proc. R. Soc. Lond. B 267 (2000) 1833-1842
115. Skage M., Hobæk A., Ruthová S., Keller B., Petrusek A., Seda J., and Spaak P. Intraspecific rDNA-ITS restriction site variation and an improved protocol to distinguish species and hybrids in the Daphnia longispina complex. Hydrobiologia 594 (2007) 19-32
116. Smirnov N.N. Mesozoic Anomopoda (Crustacea) from Mongolia. Zool. J. Linn. Soc. 104 (1992) 97-116
117. Stebbins G.L. Polyploidy and distribution of arctic-alpine flora: new evidence and a new approach. Botanica Helvetica 94 (1984) 1-13
118. Stenderup J.T., Olesen J., and Glenner H. Molecular phylogeny of the Branchiopoda (Crustacea)-multiple approaches suggest a "diplostracan" ancestry of the Notostraca. Mol. Phylogenet. Evol. 41 (2006) 182-194
119. Swain T.D., and Taylor D.J. Structural rRNA characters support monophyly of raptorial limbs and paraphyly of limb specialization in water fleas. Proc. R. Soc. Lond. B 270 (2003) 887-896
120. Swofford, D.L., 2002. PAUP*: Phylogenetic Analysis Using Parsimony, Version 4.1.1. Sinauer Associates, Sunderland, MA, USA.
121. Tamura K., Dudley J., Nei M., and Kumar S. MEGA4: molecular evolutionary genetics analysis (MEGA) Software Version 4.0. Mol. Biol. Evol. 24 (2007) 1596-1599
122. Taylor D.J., and Hebert P.D.N. Daphnia galeata mendotae as a cryptic species complex with interspecific hybrids. Limnol. Oceanogr. 37 (1992) 658-665
123. Taylor D.J., and Hebert P.D.N. Habitat-dependent hybrid parentage and differential introgression between neighboringly sympatric Daphnia species. Proc. Natl. Acad. Sci. USA 90 (1993) 7079-7083
124. Taylor D.J., and Hebert P.D.N. A reappraisal of phenotypic variation in Daphnia galeata mendotae: the role of interspecific hybridization. Can. J. Fish. Aquat. Sci. 50 (1993) 2137-2146
125. Taylor D.J., and Hebert P.D.N. Genetic assessment of species boundaries in the North American Daphnia longispina complex (Crustacea: Daphniidae). Zool. J. Linn. Soc. 110 (1994) 27-40
126. Taylor D.J., Hebert P.D.N., and Colbourne J.K. Phylogenetics and evolution of the Daphnia longispina group (Crustacea) based on 12S rDNA sequence and allozyme variation. Mol. Phylogenet. Evol. 5 (1996) 495-510
127. Taylor D.J., Finston T.L., and Hebert P.D.N. Biogeography of a widespread freshwater crustacean: pseudocongruence and cryptic endemism in the North American Daphnia laevis complex. Evolution 52 (1998) 1648-1670
128. Taylor D.J., Crease T.J., and Brown W.M. Phylogenetic evidence for a single long-lived clade of crustacean cyclic parthenogens and its implications for the evolution of sex. Proc. R. Soc. Lond. B 266 (1999) 791-797
129. Taylor D.J., Ishikane C.R., and Haney R.A. The systematics of Holarctic bosminids and a revision that reconciles molecular and morphological evolution. Limnol. Oceanogr. 47 (2002) 1486-1495
130. Thompson J.D., Higgins D.G., and Gibson T.J. ClustalW: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice. Nucleic Acids Res. 22 (1994) 4673-4680
131. Valdivia Villar R.S., and Burger L. Descripción de Daphniopsis marcahuasensis sp. nov. (Cladocera: Daphniidae) del Perú, con la inclusión de una clave de identificación de las especies del género. Amazoniana 10 (1989) 439-452
132. Walker D., and Avise J.C. Principles of phylogeography as illustrated by freshwater and terrestrial turtles in the southeastern United States. Annu. Rev. Ecol. Syst. 29 (1998) 23-58
133. Ward R.D., Bickerton M.A., Finston T.L., and Hebert P.D.N. Geographical cline in breeding systems and ploidy levels in European populations of Daphnia pulex. Heredity 73 (1994) 532-543
134. Weider L.J., and Hobæk A. Glacial refugia, haplotype distributions, and clonal richness of the Daphnia pulex complex in arctic Canada. Mol. Ecol. 12 (2003) 463-473
135. Weider L.J., Hobæk A., Colbourne J.K., Crease T.J., Dufresne F., and Hebert P.D.N. Holarctic phylogeography of an asexual species complex I. Mitochondrial DNA variation in arctic Daphnia. Evolution 53 (1999) 777-792
136. Weider L.J., Hobæk A., Hebert P.D.N., and Crease T.J. Holarctic phylogeography of an asexual species complex-II. Allozymic variation and clonal structure in Arctic Daphnia. Mol. Ecol. 8 (1999) 1-13
137. Wiens J.J. Missing data and the design of phylogenetic analyses. J. Biomed. Inform. 39 (2006) 34-42
138. Wolf H.G., and Mort M.A. Inter-specific hybridization underlies phenotypic variability in Daphnia populations. Oecologia 68 (1986) 507-511