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  5.     <title>UTas ePrints - Substantial allozyme diversity in the freshwater crayfish Parastacoides tasmanicus supports extensive cryptic speciation</title>
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  27. <meta content="Allozyme electrophoretic studies on the freshwater crayfish genus Parastacoides Clark suggest the
  28. presence of several cryptic species within this morphologically conservative taxon. Two independent allozyme
  29. studies were undertaken to assess the validity of the current taxonomy of this monotypic genus. An initial study
  30. examined 42 individuals from 10 sample sets for allozyme variation at 22 putative loci, and a subsequent study
  31. surveyed an additional 72 specimens from 20 sample sets at 16 putative loci. Both studies revealed the same general
  32. outcomes, namely: (1) several instances of sympatric species diagnosable at multiple allozyme loci; (2) numerous
  33. examples of putative allopatric species with significant levels of genetic divergence (25–81% fixed difference,
  34. 0.30–1.67 Nei distance) well beyond those found between conspecific populations of any parastacid; (3) broad
  35. genetic affinities among putative species are inconsistent with currently recognised morphotypes; and (4) low levels
  36. of within-population genetic variability, typical of parastacids. Although it is not possible to determine how many
  37. species are represented on the basis of these two preliminary studies, the allozyme data nevertheless indicate that
  38. an absolute minimum of 11 species and perhaps as many as 19 species are likely to be present in the genus. They
  39. indicate the need for a thorough taxonomic revision of the genus using both molecular and morphological data." name="eprints.abstract" />
  40. <meta content="2001" name="eprints.date" />
  41. <meta content="published" name="eprints.date_type" />
  42. <meta content="Invertebrate Systematics" name="eprints.publication" />
  43. <meta content="15" name="eprints.volume" />
  44. <meta content="5" name="eprints.number" />
  45. <meta content="667-679" name="eprints.pagerange" />
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  47. <meta content="http://www.publish.csiro.au/index.cfm" name="eprints.official_url" />
  48. <meta content="Allibone, R. M., Crowl, T. A., Holmes, J. M., King, T. M., McDowall,
  49. R. M. Townsend, C. R., and Wallis, G. P. (1996). Isozyme analysis
  50. of Galaxias species from the Taieri River, South Island, New
  51. Zealand: a species complex revealed. Biological Journal of the
  52. Linnean Society 57, 107–127.
  53. Austin, C. M. (1996). Systematics of the freshwater crayfish genus
  54. Cherax Erichson (Decapoda: Parastacidae) in northern and eastern
  55. Australia: electrophoretic and morphological variation. Australian
  56. Journal of Zoology 44, 259–296.
  57. Austin, C. M., and Knott, B. (1996). Systematics of the freshwater
  58. crayfish genus Cherax Erichson (Decapoda: Parastacidae) in southwestern
  59. Australia: electrophoretic, morphological and habitat
  60. variation. Australian Journal of Zoology 44, 223–258.
  61. Avery, L., and Austin, C. M. (1997). A biochemical taxonomic study of
  62. spiny crayfish of the genera Astacopsis and Euastacus (Decapoda:
  63. Parastacidae) in south-eastern Australia. Memoirs of the Museum of
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  70. Baverstock, P. R., and Adams, M. (1987). Rates of molecular,
  71. chromosomal and morphological evolution in some Australian
  72. vertebrates. In ‘Rates of Evolution’. (Eds K. S. W. Campbell and
  73. M. F. Day.) pp. 175-188. (Allen and Unwin: London.)
  74. Baverstock, P. R., Watts, C. H. S., and Cole, S. R. (1977).
  75. Electrophoretic comparisons between allopatric populations of five
  76. Australian Pseudomyine rodents. Australian Journal of Biological
  77. Science 30, 471–485.
  78. Baverstock, P. R., Watts, C. H. S., Adams, M., and Gelder, M. (1980).
  79. Chromosomal and electrophoretic studies of Australian Melomys
  80. (Rodentia: Muridae). Australian Journal of Zoology 28, 553–574.
  81. Brown, K. (1980). Low genetic variability and high similarities in the
  82. crayfish genera Cambarus and Procambarus. American Midland
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  84. Campbell, N. J. H., Geddes, M. C., and Adams, M. (1994). Genetic
  85. variation in yabbies (Cherax destructor Clark and C. albidus Clark
  86. (Crustacea: Decapoda: Parastacidae)) indicates the presence of a
  87. single, highly sub-structured, species. Australian Journal of
  88. Zoology 42, 745–760.
  89. Clark, E. (1936). The freshwater and land crayfishes of Australia.
  90. Memoirs of the National Museum of Victoria 10, 5–58.
  91. Clark, E. (1939). Tasmanian Parasticidae. Proceedings of the Royal
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  94. crayfishes (Family Parastacidae). Memoirs of the National Museum
  95. of Victoria 12, 31–40.
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  97. crayfish genus Oronectes (Decapoda: Cambaridae). Journal of
  98. Crustacean Biology 16(1), 111–141.
  99. Fisher, R. A., and Yates, F. (1963). ‘Statistical Tables for Biological,
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  110. D. M. Hillis, C. Moritz, and B. K. Mabel.) pp. 515–543. (Sinauer
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  113. Horwitz, P. (1989). The faunal assemblage (or pholeteros) of some
  114. freshwater burrows in southwest Tasmania. Bulletin of the
  115. Australian Society of Limnology 12, 29–36.
  116. Horwitz, P. (1990). A taxonomic revision of species in the freshwater
  117. crayfish genus Engaeus Erichson (Decapoda : Parastacidae).
  118. Invertebrate Taxonomy 4, 427–614.
  119. Horwitz, P., Adams, M., and Baverstock, P. (1990). Electrophoretic
  120. contributions to the systematics of the freshwater crayfish genus
  121. Engaeus Erichson (Decapoda: Parastacidae). Invertebrate
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  123. Hull, D. L. (1984). Contemporary systematic philosophies. In
  124. ‘Conceptual Issues in Evolutionary Biology’. (Ed. E. Sober)
  125. pp. 567–602. (Massachusetts Institute of Technology: Cambridge,
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  128. burrows. Australian Society of Limnology Newsletter 15, 57–60.
  129. Mayr, E. (1969). ‘Principles of Systematic Zoology.’ (McGraw-Hill:
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  131. Nei, M. (1978). Estimation of average heterozygosity and genetic
  132. distance from a small number of individuals. Genetics 89, 583–590.
  133. Nemeth, S. T., and Tracey, M. L. (1979). Allozyme variability
  134. and relatedness in six crayfish species. The Journal of Heredity 70,
  135. 37–43.
  136. Richardson, A. M. M. (1983). The effects of the burrows of a crayfish
  137. on the respiration of the surrounding soil. Soil Biology and
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  139. Richardson, A. M. M., and Horwitz, P. H. J. (1988). Habitat partitioning
  140. in parastacid crayfish. Freshwater Crayfish 7, 91–97.
  141. Richardson, A. M. M., and Wong, V. (1995). The effect of a burrowing
  142. crayfish, Parastacoides sp., on the vegetation of Tasmanian wet
  143. heathlands. Freshwater Crayfish 10, 174–182.
  144. Richardson, B. J., Baverstock, P. R., and Adams, M. (1986). ‘Allozyme
  145. Electrophoresis: a Handbook for Animal Systematics and
  146. Population Studies.’ (Academic Press: Sydney.)
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  148. Queensland. Records of the Australian Museum 22, 368–388.
  149. Riek, E. F. (1967). The Tasmanian freshwater crayfish genus
  150. Parastacoides (Decapoda : Parastacidae). Australian Journal of
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  152. Riek, E. F. (1969). The Australian freshwater crayfish (Crustacea :
  153. Decapoda : Parastacidae), with descriptions of new species.
  154. Australian Journal of Zoology 17, 855-918.
  155. Riek, E.F. (1972). The phylogeny of the Parastacidae (Crustacea :
  156. Astacoidea), and description of a new genus of Australian
  157. freshwater crayfishes. Australian Journal of Zoology 20, 369–389.
  158. Sokal, R. R., and Sneath, P. H. A. (1963). ‘The Principles of Numerical
  159. Taxonomy.’ (W. H. Freeman and Company: San Francisco.)
  160. Sumner, C. E. (1978). A revision of the genus Parastacoides Clark
  161. (Crustacea: Decapoda: Parastacidae). Australian Journal of
  162. Zoology 26, 809–821.
  163. Swofford, D. L., and Selander, R. B. (1981). ‘BIOSYS-1. A Computer
  164. Program for the Analysis of Allelic Variation in Population Genetics
  165. and Biochemical Systematics. Release 1. 8.’ (Illinois Natural
  166. History Survey: Champaign, Illinois.)
  167. Thorpe, J. P. (1982). The molecular clock hypothesis: biochemical
  168. evolution, genetic differentiation and systematics. Annual Review of
  169. Ecological Systematics 13, 139–168.
  170. Zeidler, W., and Adams, M. (1990). Revision of the Australian genus of
  171. freshwater crayfish Gramastacus Riek (Decapoda, Parastacidae).
  172. Invertebrate Taxonomy 3, 913–924.
  173. Manuscript received 8 December 2000; revised and accepted 25 May
  174. 2001." name="eprints.referencetext" />
  175. <meta content="Hansen, Brita and Krasnicki, Tom and Richardson, A.M.M. (2001) Substantial allozyme diversity in the freshwater crayfish Parastacoides tasmanicus supports extensive cryptic speciation. Invertebrate Systematics, 15 (5). pp. 667-679." name="eprints.citation" />
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  183. <meta content="Allozyme electrophoretic studies on the freshwater crayfish genus Parastacoides Clark suggest the
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  185. studies were undertaken to assess the validity of the current taxonomy of this monotypic genus. An initial study
  186. examined 42 individuals from 10 sample sets for allozyme variation at 22 putative loci, and a subsequent study
  187. surveyed an additional 72 specimens from 20 sample sets at 16 putative loci. Both studies revealed the same general
  188. outcomes, namely: (1) several instances of sympatric species diagnosable at multiple allozyme loci; (2) numerous
  189. examples of putative allopatric species with significant levels of genetic divergence (25–81% fixed difference,
  190. 0.30–1.67 Nei distance) well beyond those found between conspecific populations of any parastacid; (3) broad
  191. genetic affinities among putative species are inconsistent with currently recognised morphotypes; and (4) low levels
  192. of within-population genetic variability, typical of parastacids. Although it is not possible to determine how many
  193. species are represented on the basis of these two preliminary studies, the allozyme data nevertheless indicate that
  194. an absolute minimum of 11 species and perhaps as many as 19 species are likely to be present in the genus. They
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  309.     <h1 class="ep_tm_pagetitle">Substantial allozyme diversity in the freshwater crayfish Parastacoides tasmanicus supports extensive cryptic speciation</h1>
  310.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Hansen, Brita</span> and <span class="person_name">Krasnicki, Tom</span> and <span class="person_name">Richardson, A.M.M.</span> (2001) <xhtml:em>Substantial allozyme diversity in the freshwater crayfish Parastacoides tasmanicus supports extensive cryptic speciation.</xhtml:em> Invertebrate Systematics, 15 (5). pp. 667-679.</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/2292/1/AllozymeInvTax.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" class="ep_doc_icon" border="0" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/2292/1/AllozymeInvTax.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />525Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="2928" name="docid" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://www.publish.csiro.au/index.cfm">http://www.publish.csiro.au/index.cfm</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Allozyme electrophoretic studies on the freshwater crayfish genus Parastacoides Clark suggest the&#13;
  311. presence of several cryptic species within this morphologically conservative taxon. Two independent allozyme&#13;
  312. studies were undertaken to assess the validity of the current taxonomy of this monotypic genus. An initial study&#13;
  313. examined 42 individuals from 10 sample sets for allozyme variation at 22 putative loci, and a subsequent study&#13;
  314. surveyed an additional 72 specimens from 20 sample sets at 16 putative loci. Both studies revealed the same general&#13;
  315. outcomes, namely: (1) several instances of sympatric species diagnosable at multiple allozyme loci; (2) numerous&#13;
  316. examples of putative allopatric species with significant levels of genetic divergence (25–81% fixed difference,&#13;
  317. 0.30–1.67 Nei distance) well beyond those found between conspecific populations of any parastacid; (3) broad&#13;
  318. genetic affinities among putative species are inconsistent with currently recognised morphotypes; and (4) low levels&#13;
  319. of within-population genetic variability, typical of parastacids. Although it is not possible to determine how many&#13;
  320. species are represented on the basis of these two preliminary studies, the allozyme data nevertheless indicate that&#13;
  321. an absolute minimum of 11 species and perhaps as many as 19 species are likely to be present in the genus. They&#13;
  322. indicate the need for a thorough taxonomic revision of the genus using both molecular and morphological data.</p></div><table style="margin-bottom: 1em" cellpadding="3" class="not_ep_block" border="0"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270000.html">270000 Biological Sciences</a></td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2292</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">A/Prof Alastair Richardson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">23 Oct 2007 08:56</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">09 Jan 2008 02:30</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=2292;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&amp;eprintid=2292">item control page</a></p>
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