Allozymes

Naturally fragmented but not genetically isolated populations of Podocarpus sellowii Klotzsch (Podocarpaceae) in southeast Brazil

F. R. Gonçalves, Vieira, F. A., Carvalho, D., Gonçalves, F. R., Vieira, F. A., and Carvalho, D., Naturally fragmented but not genetically isolated populations of Podocarpus sellowii Klotzsch (Podocarpaceae) in southeast Brazil, vol. 15, p. -, 2016.

In southeastern Brazil, the majority of the riparian ecosystems are fragmented and degraded mainly due to human activities. The perennial gymnosperm Podocarpus sellowii Klotzch is a typical tree species from a gallery forest in the rupestrian area. Ten alloenzymatic loci were used to estimate the allelic frequency of 232 individuals distributed in eight subpopulations naturally divided by rock outcrops.

Population structure and genetic variation of the endangered species Elaeagnus mollis Diels (Elaeagnaceae)

J. M. Zhang and Zhang, F., Population structure and genetic variation of the endangered species Elaeagnus mollis Diels (Elaeagnaceae), vol. 14, pp. 5950-5957, 2015.

Elaeagnus mollis Diels is a group of shrubs and dwarf trees endemic to China and are endangered plants. However, the reason why these plants are endangered remains controversial. The current study aimed to explore the endangered status of E. mollis from a genetic perspective and to propose conservation strategies for this species. Using 16 polymorphic allozyme loci, the population genetic structure was investigated for three populations representing the taxa and variants.

Genetic population structure and hybridization in two sibling species, Tomoplagia reticulata and Tomoplagia pallens (Diptera: Tephritidae)

A. G. Abreu and Solferini, V. N., Genetic population structure and hybridization in two sibling species, Tomoplagia reticulata and Tomoplagia pallens (Diptera: Tephritidae), vol. 7, pp. 1298-1311, 2008.

Tomoplagia reticulata and T. pallens are sibling species that are specialists on Eremanthus glomerulatus. Besides adult terminalia, they show slight morphological differences and distinct geographic distributions. Once, however, they were found sympatrically. Using data from allozyme and mtDNA, we examined patterns of intra- and interspecific genetic structure, and investigated the possible occurrence of gene flow between them. Both species showed low diversity and high genetic structure, which can be linked to their high degree of specialization.

Genetic variation and population structure of two species of neo-tropical mud-mussels (Mytella spp)

M. E. G. C. de Oliveira, Russo, C. A. M., Lazoski, C., Vianna, P. Roberto F., and Solé-Cava, A. M., Genetic variation and population structure of two species of neo-tropical mud-mussels (Mytella spp), vol. 4, pp. 197-202, 2005.

Mytella guyanensis Lamarck (1819) and Mytella charruana d’Orbigny (1846) are widespread euryhaline bivalves that have become commercially important in Brazil. Despite their importance, however, no genetic information that would be useful to orient governmental policies is available for these species. We analyzed, through allozyme electrophoresis, populations of M. guyanensis and M. charruana along 3,500 km of Brazilian coast. Pairwise comparisons among gene frequencies in M.

Subscribe to Allozymes