A COMPARISON OF DROSOPHILA HABITATS ACCORDING TO THE PHYSIOLOGICAL ATTRIBUTES OF THE ASSOCIATED YEAST COMMUNITIES.

摘要: The diversity of Drosophila habitats attests to the evolutionary success species in genus. Drosophilae have been bred from a variety substrates which include decaying plant tissue (fruits, stems, bark, wood, leaves and flowers), slime fluxes exudates trees mushrooms (Carson, 197 1). Most these share common characteristic an abundant yeast microflora. yeasts are saprophytic serve process raw materials habitat into important dietary factors larval adult stages feed on decomposing substrate. In this paper, communities various compared. Such comparison should tell us if evolution diversification by has any relevance speciation drosophilae. rationale is as follows. First, it postulated that physiological abilities community partially characterize community. Traditionally taxa described identified studying purified strains for number metabolic attributes well other traits (van der Walt, 1970). Thus, information available taxonomy can be used directly particular habitat. Second, characteristics indicators characteristics, then different contain them. A wide could construct classification (e.g., phenogram) according their respective communities. This would relate accordance with nutritional state utilization Third, utilized follow study pathways groups phylogenetic arguments made. As H. L. Carson (1971) states: "The time now appears ripe exploit knowledge breeding sites understanding genetic events occur natural populations responsible changes leading adaptation speciation."