Genetic variability in Larus argentatus and Sterna hirundo
Blood serum and egg-white protein samples from individuals representing seven colonies of Larusargentatus, and four colonies of Sterna hirundo were electrophoretically analysed to determine levels of genetic variability and to assess the utility of polymorphic loci as genetic markers. Variability oc...
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ftbrockuniv:oai:dr.library.brocku.ca:10464/1890 2024-06-09T07:45:28+00:00 Genetic variability in Larus argentatus and Sterna hirundo Melvin, George Ian. Department of Biological Sciences 2009-07-09T17:35:37Z http://hdl.handle.net/10464/1890 eng eng Brock University http://hdl.handle.net/10464/1890 Water birds Herring gull Common tern Genetics Variation (Biology) Electronic Thesis or Dissertation 2009 ftbrockuniv 2024-05-16T06:42:42Z Blood serum and egg-white protein samples from individuals representing seven colonies of Larusargentatus, and four colonies of Sterna hirundo were electrophoretically analysed to determine levels of genetic variability and to assess the utility of polymorphic loci as genetic markers. Variability occurred at five co-dominant autosomal loci. S. hirundo protein polymorphism occurred at the Est-5 and the Oest-l loci, while nineteen loci were monomorphic. L. argentatus samples were monomorphic at seventeen loci and polymorphic at the Ldh-A and the Alb loci. Intergeneric differences existed at the Oalb and the Ldh-A loci. Although LDH-A100 from both species possessed identical electrophoretLc mobilities, the intergeneric differences were expressed as a difference in enzyme the'ITIlostabilities. Geographical distribution of alleles and genetic divergence estimates suggest ~ hirundo population panmixis,at least at the sampled locations. The h argentatus gene pool appears relatively heterogeneous with a discreet Atlantic Coast population and a Great Lakes demic population. These observed population structures may be maintained by the relative amount of gene flow occurring within and among populations. Mass ringing data coupled to reproductive success information and analysis of dispersal trends appear to validate this assumption. Similar results may be generated by either selection or both small organism and low locus sample sizes. To clarify these results and to detect the major factor(s) affecting the surveyed portions of the genome, larger sample sizes in conjunction with precise eco-demographic data are required. Thesis Common tern Sterna hirundo Brock University Digital Repository |
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Open Polar |
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Brock University Digital Repository |
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ftbrockuniv |
language |
English |
topic |
Water birds Herring gull Common tern Genetics Variation (Biology) |
spellingShingle |
Water birds Herring gull Common tern Genetics Variation (Biology) Melvin, George Ian. Genetic variability in Larus argentatus and Sterna hirundo |
topic_facet |
Water birds Herring gull Common tern Genetics Variation (Biology) |
description |
Blood serum and egg-white protein samples from individuals representing seven colonies of Larusargentatus, and four colonies of Sterna hirundo were electrophoretically analysed to determine levels of genetic variability and to assess the utility of polymorphic loci as genetic markers. Variability occurred at five co-dominant autosomal loci. S. hirundo protein polymorphism occurred at the Est-5 and the Oest-l loci, while nineteen loci were monomorphic. L. argentatus samples were monomorphic at seventeen loci and polymorphic at the Ldh-A and the Alb loci. Intergeneric differences existed at the Oalb and the Ldh-A loci. Although LDH-A100 from both species possessed identical electrophoretLc mobilities, the intergeneric differences were expressed as a difference in enzyme the'ITIlostabilities. Geographical distribution of alleles and genetic divergence estimates suggest ~ hirundo population panmixis,at least at the sampled locations. The h argentatus gene pool appears relatively heterogeneous with a discreet Atlantic Coast population and a Great Lakes demic population. These observed population structures may be maintained by the relative amount of gene flow occurring within and among populations. Mass ringing data coupled to reproductive success information and analysis of dispersal trends appear to validate this assumption. Similar results may be generated by either selection or both small organism and low locus sample sizes. To clarify these results and to detect the major factor(s) affecting the surveyed portions of the genome, larger sample sizes in conjunction with precise eco-demographic data are required. |
author2 |
Department of Biological Sciences |
format |
Thesis |
author |
Melvin, George Ian. |
author_facet |
Melvin, George Ian. |
author_sort |
Melvin, George Ian. |
title |
Genetic variability in Larus argentatus and Sterna hirundo |
title_short |
Genetic variability in Larus argentatus and Sterna hirundo |
title_full |
Genetic variability in Larus argentatus and Sterna hirundo |
title_fullStr |
Genetic variability in Larus argentatus and Sterna hirundo |
title_full_unstemmed |
Genetic variability in Larus argentatus and Sterna hirundo |
title_sort |
genetic variability in larus argentatus and sterna hirundo |
publisher |
Brock University |
publishDate |
2009 |
url |
http://hdl.handle.net/10464/1890 |
genre |
Common tern Sterna hirundo |
genre_facet |
Common tern Sterna hirundo |
op_relation |
http://hdl.handle.net/10464/1890 |
_version_ |
1801374839950278656 |