Esteban Hasson

Identifying candidate genes affecting developmental time in Drosophila melanogaster: pervasive pleiotropy and gene-by-environment interaction (2008)

Mensch, Julián, Lavagnino, Nicolás, Carreira, Valeria, Massaldi, Ana, Hasson, Esteban, Fanara, Juan

Abstract Background Understanding the genetic architecture of ecologically relevant adaptive traits requires the contribution of developmental and evolutionary biology. The time to reach the age of...

Evolution of male genitalia: environmental and genetic factors affect genital morphology in two Drosophilasibling species and their hybrids (2007)

Soto, Ignacio M, Carreira, Valeria P, Fanara, Juan J, Hasson, Esteban

Abstract Background The rapid evolution of genital morphology is a fascinating feature that accompanies many speciation events. However, the underlying patterns and explanatory processes remain to be...

DIRECT AND CORRELATED RESPONSES TO ARTIFICIAL SELECTION ON DEVELOPMENTAL TIME AND WING LENGTH IN DROSOPHILA BUZZATII (2002)

Marcelo D. Cortese, Fabian M. Norry, Romina Piccinali, Esteban Hasson

Developmental time and body size are two positively correlated traits closely related to fitness in many organisms including Drosophila. Previous work suggested that these two traits are involved in...

OVIPOSITION ACCEPTANCE AND FECUNDITY SCHEDULE IN THE CACTOPHILIC SIBLING SPECIES DROSOPHILA BUZZATII AND D. KOEPFERAE ON THEIR NATURAL HOSTS (2001)

Juan J. Fanara, Esteban Hasson

We tested for the occurrence of oviposition acceptance for different media prepared with cactus tissues of three alternative cactus hosts: Opuntia sulphurea, O. quimilo and Trichocereus terschekii...

BEHAVIORAL DIFFERENTIATION IN OVIPOSITION ACTIVITY IN DROSOPHILA BUZZATII FROM HIGHLAND AND LOWLAND POPULATIONS IN ARGENTINA: PLASTICITY OR THERMAL ADAPTATION? (2001)

Jesper Dahlgaard, Esteban Hasson, Volker Loeschcke

Highland populations of several Drosophila species in Argentina were active early in the afternoon in the field as opposed to populations from a much warmer lowland site, where flies were mainly...

THE ROLE OF THE USE OF DIFFERENT HOST PLANTS IN THE MAINTENANCE OF THE INVERSION POLYMORPHISM IN THE CACTOPHILIC DROSOPHILA BUZZATII (2000)

Pedro Fernández Iriarte, Esteban Hasson

Inversion polymorphisms often have been associated with fitness variation. Cactophilic Drosophila buzzatii has been used widely for the study of the maintenance of chromosomal variation. The purpose...