University of Madeira

About: University of Madeira is a education organization based out in Funchal, Portugal. It is known for research contribution in the topics: Population & Dendrimer. The organization has 1014 authors who have published 2759 publications receiving 59457 citations.

Structure and evolution of the mitochondrial DNA complete control region in the Drosophila subobscura subgroup

Abstract: The complete A + T-rich region of mitochondrial DNA (mtDNA) has been cloned and sequenced in the species of the Drosophila subobscura subgroup D subobscura, D madeirensis and D guanche Comparative analysis of these sequences with others already published has identified new sequence motifs that are conserved in Drosophila and other insects A putative bi-directional promoter and a stop signal are proposed to be involved in the primary mtDNA strand replication of Drosophila This region strongly resolves relationships of the species included in a phylogenetic analysis, both for closely related species and also at deeper phylogenetic levels when only the left and central domains are taken into account

Mitochondrial portraits of the Madeira and Açores archipelagos witness different genetic pools of its settlers.

Abstract: We have studied the matrilineal genetic com- position of the Madeira and Acores north Atlantic archi- pelagos, which were settled by the Portuguese in the 15th century. Both archipelagos, and particularly Madeira, were involved in a complex commercial network established by the Portuguese, which included the trading of slaves across the Atlantic. One hundred and fifty-five mtDNAs sampled from the Madeira and 179 from the Acores archipelagos were analysed for the hypervariable segment I (HVS-I), and for haplogroup-diagnostic coding-region RFLPs. The different settlement histories of both groups of islands are well reflected in their present day mtDNA pool. Although both archipelagos show identical diversity values, they are clearly different in their haplogroup content. Madeira dis- plays a stronger sub-Saharan imprint, with haplogroups L1-L3 constituting about 13% of the lineages. Also, the relative frequencies of L sub-clusters in Madeira and main- land Portugal suggests that, at least in part, African pres- ence in Madeira can be attributed to a direct gene flow from West Africa and not via Portugal. A comparison of the ge- netic composition of these two archipelagos with the Ca- nary Islands, specially taking into account that their Euro- pean source population was essentially from the Iberian Peninsula, testifies the stronger impact of the North African U6 cluster in the Canaries. This group is present in Madeira at a moderate frequency, but very reduced in the Acores. Nevertheless the recorded introduction of Canary native Guanches, who are characterized by the presence of par- ticular sub-clade U6b1, has left no detectable imprints in the present day population of Madeira.

The knowledge transfer and cooperation between universities and enterprises

Abstract: Knowledge and its transference are increasingly viewed as key factors of companies’ competitiveness. In this sense, our research aims to analyze how the knowledge transfer takes place between the h...