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  5.     <title>UTas ePrints - Reproductive compatibility among four global populations of the toxic dinoflagellate Gymnodinium catenatum (Dinophyceae)</title>
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  13.     <meta content="Blackburn, Susan I." name="eprints.creators_name" />
  14. <meta content="Bloch, Christopher J.S." name="eprints.creators_name" />
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  25. <meta content="Reproductive compatibility among four global populations of the toxic dinoflagellate Gymnodinium catenatum (Dinophyceae)" name="eprints.title" />
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  28. <meta content="Reproductive compatibility was examined among 21 strains of Gymnodinium catenutum derived from four different populations
  29. from across the globe: Tasmania, Australia (15 strains), Japan (2 strains). Spain (2 strains) and Portugal (2 strains).
  30. Pairwise crossing of strains demonstrated extensive intrapopulation compatibility (to resting cyst formation) among all four
  31. populations. The observations were must consistent with a heterothallic, multiple-group mating system. requiring more than
  32. two groups to explain the pairwise crossing data. Despite the ability of strains from different populations to produce resting
  33. cysts. the viability of progeny was highly variable among interpopulation crosses. Cysts from all crosses showed a high
  34. germination percentage (93-100%) and released a swimming planorneiocyte. Crosses between different Tasmanian strains,
  35. and those between Spanish and Japanese strains. showed high post-meiotic viability (65% and RO%,respectively). However.
  36. progeny from Tasmanian-Spanish and Tasmanian-Japanese crosses showed very low post-meiotic viability (5-10%). indicating
  37. a higher level of somatic incompatibility between these populations. Significant differences in sexual life-history (e.g.
  38. rate of gamete formation and cyst dormancy) were also noted between interpupulation crosses. suggesting genetically
  39. determined strain-and population-level differences. The crossing data indicate a high level of mating diversity within the
  40. Australian population and show that the Japanese and Spanish populations are more closely related to each other than to
  41. Australian populations: this is supported by molecular studies. implications for the proposed global dispersal of G, catenatum
  42. and the use of interbreeding to examine population relationships are discussed. New measures are proposed for examining
  43. strain (RCs) and population (Rep) levels of reproductive compatibility, respectively. which are calculated as the product of
  44. proportion of successful rnatings (termed the compatibility index) and the number of cysts produced (average vigour) in
  45. successful crosses." name="eprints.abstract" />
  46. <meta content="2001" name="eprints.date" />
  47. <meta content="published" name="eprints.date_type" />
  48. <meta content="Phycologia" name="eprints.publication" />
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  54. <meta content="http://www.phycologia.org/perlserv/?request=get-archive" name="eprints.official_url" />
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  58. catenatum. Journal of Phycology 24: 255-262.
  59. ANDERSON D.M., KULIS D.M., ORPHANOS J.A. &amp; CECRVALS A.R. 1982. Distribution of the toxic dinoflagellate Gonyaulax tamarensis in the southern New England region. Estuarine Coastal and Shelf Science L4: 447-458.
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  67. catenatum from Tasmania, Australia. Journal of Phycology
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  150. Accepted J2 December 2000
  151. n ..." name="eprints.referencetext" />
  152. <meta content="Blackburn, Susan I. and Bloch, Christopher J.S. and Haskard, Kathryn A. and Hallegraeff, Gustaaf M. (2001) Reproductive compatibility among four global populations of the toxic dinoflagellate Gymnodinium catenatum (Dinophyceae). Phycologia, 40 (1). pp. 78-87. ISSN Phycologia" name="eprints.citation" />
  153. <meta content="http://eprints.utas.edu.au/2469/1/hallegraeff1.pdf" name="eprints.document_url" />
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  155. <meta content="Reproductive compatibility among four global populations of the toxic dinoflagellate Gymnodinium catenatum (Dinophyceae)" name="DC.title" />
  156. <meta content="Blackburn, Susan I." name="DC.creator" />
  157. <meta content="Bloch, Christopher J.S." name="DC.creator" />
  158. <meta content="Haskard, Kathryn A." name="DC.creator" />
  159. <meta content="Hallegraeff, Gustaaf M." name="DC.creator" />
  160. <meta content="Reproductive compatibility was examined among 21 strains of Gymnodinium catenutum derived from four different populations
  161. from across the globe: Tasmania, Australia (15 strains), Japan (2 strains). Spain (2 strains) and Portugal (2 strains).
  162. Pairwise crossing of strains demonstrated extensive intrapopulation compatibility (to resting cyst formation) among all four
  163. populations. The observations were must consistent with a heterothallic, multiple-group mating system. requiring more than
  164. two groups to explain the pairwise crossing data. Despite the ability of strains from different populations to produce resting
  165. cysts. the viability of progeny was highly variable among interpopulation crosses. Cysts from all crosses showed a high
  166. germination percentage (93-100%) and released a swimming planorneiocyte. Crosses between different Tasmanian strains,
  167. and those between Spanish and Japanese strains. showed high post-meiotic viability (65% and RO%,respectively). However.
  168. progeny from Tasmanian-Spanish and Tasmanian-Japanese crosses showed very low post-meiotic viability (5-10%). indicating
  169. a higher level of somatic incompatibility between these populations. Significant differences in sexual life-history (e.g.
  170. rate of gamete formation and cyst dormancy) were also noted between interpupulation crosses. suggesting genetically
  171. determined strain-and population-level differences. The crossing data indicate a high level of mating diversity within the
  172. Australian population and show that the Japanese and Spanish populations are more closely related to each other than to
  173. Australian populations: this is supported by molecular studies. implications for the proposed global dispersal of G, catenatum
  174. and the use of interbreeding to examine population relationships are discussed. New measures are proposed for examining
  175. strain (RCs) and population (Rep) levels of reproductive compatibility, respectively. which are calculated as the product of
  176. proportion of successful rnatings (termed the compatibility index) and the number of cysts produced (average vigour) in
  177. successful crosses." name="DC.description" />
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  291.     <h1 class="ep_tm_pagetitle">Reproductive compatibility among four global populations of the toxic dinoflagellate Gymnodinium catenatum (Dinophyceae)</h1>
  292.     <p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Blackburn, Susan I.</span> and <span class="person_name">Bloch, Christopher J.S.</span> and <span class="person_name">Haskard, Kathryn A.</span> and <span class="person_name">Hallegraeff, Gustaaf M.</span> (2001) <xhtml:em>Reproductive compatibility among four global populations of the toxic dinoflagellate Gymnodinium catenatum (Dinophyceae).</xhtml:em> Phycologia, 40 (1). pp. 78-87. ISSN Phycologia</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/2469/1/hallegraeff1.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/2469/1/hallegraeff1.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />2879Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input accept-charset="utf-8" value="3251" 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.phycologia.org/perlserv/?request=get-archive">http://www.phycologia.org/perlserv/?request=get-archive</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Reproductive compatibility was examined among 21 strains of Gymnodinium catenutum derived from four different populations&#13;
  293. from across the globe: Tasmania, Australia (15 strains), Japan (2 strains). Spain (2 strains) and Portugal (2 strains).&#13;
  294. Pairwise crossing of strains demonstrated extensive intrapopulation compatibility (to resting cyst formation) among all four&#13;
  295. populations. The observations were must consistent with a heterothallic, multiple-group mating system. requiring more than&#13;
  296. two groups to explain the pairwise crossing data. Despite the ability of strains from different populations to produce resting&#13;
  297. cysts. the viability of progeny was highly variable among interpopulation crosses. Cysts from all crosses showed a high&#13;
  298. germination percentage (93-100%) and released a swimming planorneiocyte. Crosses between different Tasmanian strains,&#13;
  299. and those between Spanish and Japanese strains. showed high post-meiotic viability (65% and RO%,respectively). However.&#13;
  300. progeny from Tasmanian-Spanish and Tasmanian-Japanese crosses showed very low post-meiotic viability (5-10%). indicating&#13;
  301. a higher level of somatic incompatibility between these populations. Significant differences in sexual life-history (e.g.&#13;
  302. rate of gamete formation and cyst dormancy) were also noted between interpupulation crosses. suggesting genetically&#13;
  303. determined strain-and population-level differences. The crossing data indicate a high level of mating diversity within the&#13;
  304. Australian population and show that the Japanese and Spanish populations are more closely related to each other than to&#13;
  305. Australian populations: this is supported by molecular studies. implications for the proposed global dispersal of G, catenatum&#13;
  306. and the use of interbreeding to examine population relationships are discussed. New measures are proposed for examining&#13;
  307. strain (RCs) and population (Rep) levels of reproductive compatibility, respectively. which are calculated as the product of&#13;
  308. proportion of successful rnatings (termed the compatibility index) and the number of cysts produced (average vigour) in&#13;
  309. successful crosses.</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">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">2469</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">Scholarly Publications Librarian</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">20 Nov 2007 15:58</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=2469;">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=2469">item control page</a></p>
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