info:eu-repo/semantics/article
Geographic patterns of inversion polymorphism in the second chromosome of the cactophilic drosophila buzzatii from Northeastern Argentina
Fecha
2010-10Registro en:
Soto, Ignacio Maria; Soto, Eduardo Maria; Carreira, Valeria Paula; Hurtado, Juan Pablo; Fanara, Juan Jose; et al.; Geographic patterns of inversion polymorphism in the second chromosome of the cactophilic drosophila buzzatii from Northeastern Argentina; Oxford University Press; Journal of Insect Science; 10; 10-2010; 1-11; 187
1536-2442
CONICET Digital
CONICET
Autor
Soto, Ignacio Maria
Soto, Eduardo Maria
Carreira, Valeria Paula
Hurtado, Juan Pablo
Fanara, Juan Jose
Hasson, Esteban Ruben
Resumen
The inversion polymorphisms of the cactophilic Drosophila buzzatti Patterson and Wheeler (Diptera: Drosophilidae) were studied in new areas of its distribution in Argentina. A total of thirty-eight natural populations, including 29 from previous studies, were analyzed using multiple regression analyses. The results showed that about 23% of total variation was accounted for by a multiple regression model in which only altitude contributed significantly to population variation, despite the fact that latitude and longitude were also included in the model. Also, inversion frequencies exhibited significant associations with mean annual temperature, precipitation, and atmospheric pressure. In addition, expected heterozygosity exhibited a negative association with temperature and precipitation and a positive association with atmospheric pressure. The close similarity of the patterns detected in this larger dataset to previous reports is an indication of the stability of the clines. Also, the concurrence of the clines detected in Argentina with those reported for colonizing populations of Australia suggests the involvement of natural selection as the main mechanism shaping inversion frequencies in D. buzzatii.