Allozyme genetic distances and evolutionary relationships in marsupials of North and South America
Allozyme genetic distances and variability were studied by horizontal starch gel electrophoresis in 6 species of marsupials from North and South America representing 4 different genera. Twenty-one presumptive loci were assessed in a total of 151 specimens. Only 1 of 21 loci was found to be monomorph...
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1999
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017051_v44_n3_p233_Barrantes http://hdl.handle.net/20.500.12110/paper_00017051_v44_n3_p233_Barrantes |
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paper:paper_00017051_v44_n3_p233_Barrantes2023-06-08T14:21:05Z Allozyme genetic distances and evolutionary relationships in marsupials of North and South America Allozymes Marsupials Systematic relationships allozyme evolutionary biology genetic variation marsupial North America South America Didelphis albiventris Didelphis albiventris Didelphis marsupialis Didelphis marsupialis Didelphis virginiana Didelphis virginiana Lestodelphys halli Lestodelphys halli Lutreolina crassicaudata Lutreolina crassicaudata Metatheria Monodelphis dimidiata Monodelphis dimidiata Allozyme genetic distances and variability were studied by horizontal starch gel electrophoresis in 6 species of marsupials from North and South America representing 4 different genera. Twenty-one presumptive loci were assessed in a total of 151 specimens. Only 1 of 21 loci was found to be monomorphic in the whole sample. Phenetic and cladistic interspecific analysis coincided in rendering two sharply differentiated subgroups: one comprising species of the genus Didelphis Linnaeus, 1758 (D. marsupialis Linnaeus, 1758, D. virginiana Kerr, 1792 and D. albiventris Lund, 1840), and the other comprising Monodelphis dimidiata (Wagner, 1847), Lestodelphys halli (Thomas, 1921) and Lutreolina crassicaudata (Desmarest, 1804). No relationships between the bradytelic condition, the karyotype stability of this group, and genetic variability were found. On the other hand, the existence of species with brief life span such as Lestodelphys halli and Monodelphis dimidiata (Marmosini tribe) and species with long life span (Didelphini tribe) allowed us to test the hypothesis which correlates generation-time with genetic variability. We conclude that a general explanation for genetic variability must involve more than just generation-time. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017051_v44_n3_p233_Barrantes http://hdl.handle.net/20.500.12110/paper_00017051_v44_n3_p233_Barrantes |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Allozymes Marsupials Systematic relationships allozyme evolutionary biology genetic variation marsupial North America South America Didelphis albiventris Didelphis albiventris Didelphis marsupialis Didelphis marsupialis Didelphis virginiana Didelphis virginiana Lestodelphys halli Lestodelphys halli Lutreolina crassicaudata Lutreolina crassicaudata Metatheria Monodelphis dimidiata Monodelphis dimidiata |
| spellingShingle |
Allozymes Marsupials Systematic relationships allozyme evolutionary biology genetic variation marsupial North America South America Didelphis albiventris Didelphis albiventris Didelphis marsupialis Didelphis marsupialis Didelphis virginiana Didelphis virginiana Lestodelphys halli Lestodelphys halli Lutreolina crassicaudata Lutreolina crassicaudata Metatheria Monodelphis dimidiata Monodelphis dimidiata Allozyme genetic distances and evolutionary relationships in marsupials of North and South America |
| topic_facet |
Allozymes Marsupials Systematic relationships allozyme evolutionary biology genetic variation marsupial North America South America Didelphis albiventris Didelphis albiventris Didelphis marsupialis Didelphis marsupialis Didelphis virginiana Didelphis virginiana Lestodelphys halli Lestodelphys halli Lutreolina crassicaudata Lutreolina crassicaudata Metatheria Monodelphis dimidiata Monodelphis dimidiata |
| description |
Allozyme genetic distances and variability were studied by horizontal starch gel electrophoresis in 6 species of marsupials from North and South America representing 4 different genera. Twenty-one presumptive loci were assessed in a total of 151 specimens. Only 1 of 21 loci was found to be monomorphic in the whole sample. Phenetic and cladistic interspecific analysis coincided in rendering two sharply differentiated subgroups: one comprising species of the genus Didelphis Linnaeus, 1758 (D. marsupialis Linnaeus, 1758, D. virginiana Kerr, 1792 and D. albiventris Lund, 1840), and the other comprising Monodelphis dimidiata (Wagner, 1847), Lestodelphys halli (Thomas, 1921) and Lutreolina crassicaudata (Desmarest, 1804). No relationships between the bradytelic condition, the karyotype stability of this group, and genetic variability were found. On the other hand, the existence of species with brief life span such as Lestodelphys halli and Monodelphis dimidiata (Marmosini tribe) and species with long life span (Didelphini tribe) allowed us to test the hypothesis which correlates generation-time with genetic variability. We conclude that a general explanation for genetic variability must involve more than just generation-time. |
| title |
Allozyme genetic distances and evolutionary relationships in marsupials of North and South America |
| title_short |
Allozyme genetic distances and evolutionary relationships in marsupials of North and South America |
| title_full |
Allozyme genetic distances and evolutionary relationships in marsupials of North and South America |
| title_fullStr |
Allozyme genetic distances and evolutionary relationships in marsupials of North and South America |
| title_full_unstemmed |
Allozyme genetic distances and evolutionary relationships in marsupials of North and South America |
| title_sort |
allozyme genetic distances and evolutionary relationships in marsupials of north and south america |
| publishDate |
1999 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00017051_v44_n3_p233_Barrantes http://hdl.handle.net/20.500.12110/paper_00017051_v44_n3_p233_Barrantes |
| _version_ |
1768542764518080512 |