scholarly journals Allozyme variation and genetic relationships among species in the C arex willdenowii complex (Cyperaceae)

1998 ◽  
Vol 85 (4) ◽  
pp. 546-552 ◽  
Author(s):  
Bruce A. Ford ◽  
D. A. Ross McQueen ◽  
Robert F. C. Naczi ◽  
Anton A. Reznicek
Keyword(s):  
Genetic Relationships ◽  
Allozyme Variation

Allozyme Variation and Genetic Relationships among Species of Cimicifuga (Ranunculaceae) from Korea

2000 ◽  
Vol 161 (3) ◽  
pp. 413-423 ◽  
Author(s):  
Hyun‐Woo Lee ◽  
Myong Gi Chung ◽  
Youngbae Suh ◽  
Chong‐Wook Park
Keyword(s):  
Genetic Relationships ◽  
Allozyme Variation

Genetic relationships of eight species of Pacific tunas (Teleostei: Scombridae) inferred from allozyme analysis

1995 ◽  
Vol 46 (7) ◽  
pp. 1021 ◽  
Author(s):  
NG Elliott ◽  
RD Ward
Keyword(s):  
Liver Enzymes ◽  
Genetic Relationships ◽  
Phylogenetic Analyses ◽  
Allozyme Variation ◽  
Allozyme Analysis ◽  
Average Heterozygosity ◽  
Katsuwonus Pelamis ◽  
Thunnus Alalunga ◽  
Auxis Thazard ◽  
Allozyme Loci

A phylogenetic analysis of eight species of Pacific tunas was made after examining allozyme variation at 23 muscle and liver enzymes encoded by 35 loci. The eight species of tuna were: Thunnus alalunga, albacore; T. obesus, bigeye; T. thynnus orientalis, northern bluefin; T. maccoyii, southern bluefin; T. albacares, yellowfin; Auxis thazard, frigate; Euthynnus affiizii kawakawa; Katsuwonus pelamis, skipjack. All species except the northern bluefin were also examined for variation at three eye-specific loci. The average heterozygosity per locus ranged from 0.038 (frigate) to 0.070 (bigeye). Genetic relationships were examined on the basis of the 35 loci screened in all species. Genetic identities among the five Thunnus species were high, averaging 0.864 and ranging from 0.788 to 0.923. Whereas the albacore appeared to be the most divergent of the Thunnus species (mean identity to other Thunnus species of 0.825, range 0.788-0.452), there was little differentiation between yellowfin, southern bluefin and northern bluefin tunas (mean identity 0.905, range 0.892-0.923), and phylogenetic analyses failed to resolve the branch order among the Thunnus species. The non-Thunnus tunas were quite divergent both from one another and from Thunnus species (mean identity 0.358, range 0.280-0.606). Diagnostic allozyme loci were identified, allowing the discrimination of all species.

scholarly journals ENZYME VARIABILITY IN THE DROSOPHILA WILLISTONI GROUP. III. AMOUNTS OF VARIABILITY IN THE SUPERSPECIES, D. PAULISTORUM

Genetics ◽  
1972 ◽  
Vol 70 (1) ◽  
pp. 87-112
Author(s):  
Rollin C Richmond
Keyword(s):  
Genetic Variation ◽  
Balancing Selection ◽  
Genetic Relationships ◽  
Natural Populations ◽  
Allozyme Variation ◽  
Metabolizing Enzymes ◽  
Group Iii ◽  
Allozyme Loci ◽  
Drosophila Paulistorum ◽  
Average Individual

ABSTRACT The semispecies composing the superspecies, Drosophila paulistorum, have been analyzed for genetic variation at 17 enzyme loci. On the average a population of D. paulistorum is polymorphic for 55–67% of its loci and an average individual is heterozygous at 21% of its loci. The pattern of genetic variability found supports the hypothesis that allozyme variation is maintained in natural populations by some form of balancing selection. Evidence is presented which supports the hypothesis that glucose-metabolizing enzymes are less genetically variable than non-glucose-metabolizing enzymes. The known genetic relationships between the semispecies of D. paulistorum are discussed in the light of the frequencies of alleles at allozyme loci.

Genetic affinities among subspecies of a widespread Australian lycaenid butterfly, Ogyris amaryllis (Hewitson)

2006 ◽  
Vol 54 (6) ◽  
pp. 429 ◽  
Author(s):  
D. J. Schmidt ◽  
J. M. Hughes
Keyword(s):  
Host Plant ◽  
Sequence Data ◽  
Genetic Relationships ◽  
Genetic Data ◽  
Allozyme Variation ◽  
Larval Host ◽  
Eastern Australia ◽  
Allopatric Divergence ◽  
Distribution And Ecology ◽  
Lycaenid Butterfly

Genetic relationships among nominal subspecies of the lycaenid butterfly Ogyris amaryllis were investigated in eastern Australia. High levels of variation and population differentiation observed for allozyme markers were not consistent with subspecies boundaries. Partitioning of allozyme variation was explained better by arranging populations according to their larval host plant. Mitochondrial sequence data recovered a polyphyletic inland subspecies, with several peripheral subspecies showing reduced variation within this topology. Non-parametric topology tests rejected monophyly of the nominal subspecies and suggested that allopatric divergence is unlikely to account for the evolution of this complex. Genetic data, combined with information on distribution and ecology, are more consistent with a pattern of peripheral isolation associated with host-plant specialisation of coastal populations.

Allozyme Characterisation of the Salt Lake Spiders (Lycosa: Lycosidae: Araneae) of Southern Australia: Systematic and Population Genetic Implications.

1996 ◽  
Vol 44 (5) ◽  
pp. 535 ◽  
Author(s):  
P Hudson ◽  
M Adams
Keyword(s):  
Population Genetic ◽  
Salt Lake ◽  
Genetic Relationships ◽  
South Australia ◽  
Wolf Spider ◽  
Allozyme Variation ◽  
Population Genetic Analysis ◽  
Additional Species ◽  
Population Substructuring ◽  
The Times

Allozyme electrophoresis was used to determine the genetic relationships amongst various populations of Lycosa alteripa, L. eyrei and L. salifodina, the three described species of wolf spider endemic to the normally dry salt lakes of southern Australia. A total of 185 individuals from 38 sites was analysed for allozyme variation at 31-35 loci. The results demonstrate the presence of two additional species of salt lake spider, one related to L. alteripa and the other related to L. eyrei. Limited population genetic analysis of the data indicates that population substructuring is common within most species, often to the finest level of geographic sampling. The data indicate that gene flow is limited in these species and reveal three instances of a similar macro-geographic pattern being displayed amongst subpopulations or taxa in central South Australia. Estimates of genetic divergence between the five taxa have also been used to provide a 'first-guess' estimate of the times of divergence for the major cladogenic events within this lineage.

An electrophoretic study of the phylogenetic relationships among four species of sticklebacks (Pisces: Gasterosteidae)

1984 ◽  
Vol 62 (11) ◽  
pp. 2313-2316 ◽  
Author(s):  
Jocelyn Hudon ◽  
Helga Guderley
Keyword(s):  
Phylogenetic Relationships ◽  
Gasterosteus Aculeatus ◽  
Genetic Relationships ◽  
Cladistic Analysis ◽  
Allozyme Variation ◽  
Congeneric Species ◽  
Phenetic Analysis ◽  
Pungitius Pungitius ◽  
Electrophoretic Study ◽  
Apeltes Quadracus

The genetic relationships between four species of sticklebacks, Gasterosteus aculeatus Linneaus form trachurus, Gasterosteus wheatlandi Putnam, Pungitius pungitius (Linneaus), and Apeltes quadracus (Mitchill) were estimated by a locus-by-locus analysis of interspecific allozyme variation as well as by a band-counting analysis of soluble proteins in muscle. The locus-by-locus data was analysed both by a qualitative cladistic analysis and by a quantitative phenetic analysis. Both the locus-by-locus analysis and the band-counting analysis generated phylogenies which concord with the previously established relationships among these species. Our analyses indicate that these species have diverged considerably with a genetic identity of only 0.37 between the two congeneric species.

Allozyme variation of old Ginkgobiloba memorial trees in western Japan

1992 ◽  
Vol 22 (7) ◽  
pp. 939-944 ◽  
Author(s):  
Yoshihiko Tsumura ◽  
Hiroshi Motoike ◽  
Kihachiro Ohba
Keyword(s):  
Principal Component Analysis ◽  
Discriminant Analysis ◽  
Genetic Relationships ◽  
Principal Component ◽  
Allozyme Variation ◽  
Canonical Discriminant Analysis ◽  
Scatter Diagram ◽  
Enzyme Systems ◽  
Multivariate Procedures ◽  
Western Japan

Allozyme variation of 89 old memorial trees of Ginkgobiloba L. in western Japan were investigated. For 12 loci from 10 enzyme systems, the percentage of polymorphic loci (95% level), the number of alleles per locus, and the observed heterozygosity were 75.0%, 2.5, and 0.234, respectively. The variation of this species is relatively high in comparison with other gymnosperms. Genetic relationships between four regions (Kansai, Shikoku, North Kyushu, and South Kyushu) were investigated by using two multivariate procedures. Based on a principal component analysis, these four regional groups were not separated clearly, except for the Shikoku and South Kyushu groups, which were almost completely separated in opposite peripheral zones of a scatter diagram. The canonical discriminant analysis also almost completely separated the Shikoku and South Kyushu groups. These results indicate that most trees of the Shikoku and South Kyushu groups might be descendants of individuals from the Kansai and North Kyushu groups, respectively, excluding some exceptions.

Allozyme Variation and Population Substructuring in the Caucasian Ground Lizards Lacerta derjugini and Lacerta praticola

2011 ◽  
Vol 4 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Ross D. MacCulloch ◽  
Ilya S. Darevsky ◽  
Robert W. Murphy ◽  
Jinzhong Fu
Keyword(s):  
Genetic Diversity ◽  
Allozyme Variation ◽  
Close Proximity ◽  
Geographic Separation ◽  
Population Substructuring ◽  
Allozyme Loci ◽  
Two Populations

Genetic diversity at 35 allozyme loci was surveyed in Lacerta derjugini (3 populations) and L. praticola (2 populations). Indices of variability were consistent with those found in other Caucasian Lacerta. There was little genetic substructuring between two populations of L. praticola despite considerable geographic separation. Conversely, populations of L. derjugini in close proximity to one another exhibited considerable substructuring.

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