Esterase variation  among Argentine populations  of Trimerotropis pallidipennis  (Orthoptera)

Confalonieri, Viviana A.; Vilardi, JC; Saidman, BO

doi:10.1051/gse:19900303

Cited by 2 publications

(6 citation statements)

References 8 publications

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“…These are explained in part by the patterns of variation of esterase loci which match those of chromosome frequencies, probably as a consequence of linkage. Interestingly, similar distributions of Est-5 and Est-6 alleles were observed for other populations of T pallidipennis collected in 1988, in spite of one of them being separated by a great distance (800 km) (Confalonieri et at., 1990).…”

Section: Discussionmentioning

confidence: 60%

“…The inheritance of bands corresponding to the LDH, SOD, PEP and GOT systems has been described elsewhere (Confalonieri et at., 1990. MDH is coded by three loci (Mdli-], Mdh-2 and Mdh-3) and ME by one (Me-i).…”

Section: Results Lsoenzymatic Analysismentioning

confidence: 99%

“…Tray and gel buffer systems as well as staining procedures for EST, LDH, PEP, SOD and GOT are described by Confalonieri et al (1990. The ME and MDH systems were as reported by Shaw & Prassad (1970) and the LAP system as described by Saidman (1985).…”

Section: Methodsmentioning

confidence: 99%

“…Methods of conservation of specimens and enzyme extractions are described by Confalonieri et al (1990). Eight isozyme systems, belonging to groups I and II, were analysed.…”

Section: Methodsmentioning

confidence: 99%

“…Recent work has revealed that the level of genetic differentiation among samples belonging to different geographical areas is associated with a high degree of chromosomal divergence which suggested a possible adaptation of the corresponding supergenes to the particular ecological conditions (Confalonieri et al, 1990.…”

Section: Introductionmentioning

confidence: 99%

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Parallel adaptive patterns of allozyme and inversion polymorphisms on an ecological gradient

1996

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Trimerotropis pallidipennis is an American grasshopper whose South American populations are polymorphic for pericentric inversions. The frequencies of some of these rearrangements are correlated with geographical and climatic variables, following similar patterns among different ecological gradients. Hence, this species constitutes a promising model in which the evolutionary significance of inversion systems can be analysed as possible sources of coadapted groups of linked genes. Six samples collected along an altitudinal gradient were assayed jointly for genetic and chromosomal variation. Interestingly, the phenograms constructed with Nei's genetic distances obtained from allozyme and chromosome data were almost identical. This result is produced mainly by esterase loci variation, probably as a consequence of linkage disequilibrium. The evolutionary significance of this association is briefly discussed.

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Section: Discussionmentioning

confidence: 60%

Section: Results Lsoenzymatic Analysismentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Methods of conservation of specimens and enzyme extractions are described by Confalonieri et al (1990). Eight isozyme systems, belonging to groups I and II, were analysed.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Parallel adaptive patterns of allozyme and inversion polymorphisms on an ecological gradient

1996

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Cytogenetic Studies in Sinipta dalmani Stal (Orthoptera:Acrididae). IV: Possible Association between Chromosome Sequence and Enzymatic Allele.

1998

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Summary Three samples of Sinipta dalmani polymorphic for the M4 pericentric inversion were assayed for chromosomal variation and allozymic variation at 18 loci (9 enzymatic systems). No significant differences in inversion frequencies between two samples of the same population were found (early and late spring). This was considered compatible with the absence of directional selection on adult viability for the M4 inversion. Gene flow between two populations was statistically significant when calculated either from chromosomal or from enzymatic data. A tendency to association between the Ldh-11 allele and the standard sequence was observed.

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Esterase variation among Argentine populations of Trimerotropis pallidipennis (Orthoptera)

Cited by 2 publications

References 8 publications

Parallel adaptive patterns of allozyme and inversion polymorphisms on an ecological gradient

Parallel adaptive patterns of allozyme and inversion polymorphisms on an ecological gradient

Cytogenetic Studies in Sinipta dalmani Stal (Orthoptera:Acrididae). IV: Possible Association between Chromosome Sequence and Enzymatic Allele.

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