| Registro completo |
| Provedor de dados: |
OMA
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| País: |
Belgium
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| Título: |
International study on <i>Artemia</i> : LX. Allozyme data suggest that a new <i>Artemia</i> population in southern Chile (50° 29' S; 73° 45' W) is <i>A. persimilis</i>
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| Autores: |
Gajardo, G.
Mercado, C.
Beardmore, J.A.
Sorgeloos, P.
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| Data: |
1999
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| Ano: |
1999
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| Palavras-chave: |
Allopatric populations
Allozymes
Genetic isolation
Hybridization
Population genetics
Chile
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| Resumo: |
An <i>Artemia</i> population from a site recently described in Chile and located in a semi-arid and humid hydrographical zone (Torres del Paine National Park), was electrophoretically characterized and cross-bred (followed through <i>F</i><sub>3</sub>) to reference samples of <i>A. franciscana</i> (San Francisco Bay, California, USA) and <i>A. persimilis</i> (Buenos Aires, Argentina), which are the species most likely to be found in Chile. The population exhibited high levels of genetic variability as judged by the percentage of polymorphic loci (<i>P</i>=53.3), mean number of alleles per locus (<i>n</i>=2.2) and mean heterozygosity (<i>H</i>=0.176). Based on the analysis of 15 loci it seems to be closer to <i>A. persimilis</i> (D Nei=0.211) than to <i>A. franciscana</i> (<i>D</i>=0.591). Laboratory cross-fertility tests do not suggest barriers to gene flow or infertility in accordance with electrophoretic results (genetic distance values or population-specific alleles), though offspring quality tended to be biased toward the production of cysts rather than nauplii, most obviously in <i>F</i><sub>3</sub>, which may be an indication of post-zygotic reproductive isolation.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.vliz.be/nl/open-marien-archief?module=ref&refid=4016
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| Fonte: |
%3Ci%3EHydrobiologia+405%3C%2Fi%3E%3A+117-123
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| Direitos: |
info:eu-repo/semantics/restrictedAccess
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