A5038435737- Insect behavior and control techniques
- Genetic diversity and population structure
- Plant and animal studies
- Botanical Research and Applications
- Insect-Plant Interactions and Control
- Insect Utilization and Effects
- Animal Behavior and Reproduction
- Neurobiology and Insect Physiology Research
- Physiological and biochemical adaptations
- Insect and Arachnid Ecology and Behavior
- Morphological variations and asymmetry
- Insect Pest Control Strategies
- Forest Insect Ecology and Management
- Biological Control of Invasive Species
- Mollusks and Parasites Studies
- Genetics, Aging, and Longevity in Model Organisms
- Genetic Mapping and Diversity in Plants and Animals
- Genomics and Phylogenetic Studies
- Insect Resistance and Genetics
- Animal Ecology and Behavior Studies
- Chromosomal and Genetic Variations
- Research on scale insects
- Botany, Ecology, and Taxonomy Studies
- Insect and Pesticide Research
- Lepidoptera: Biology and Taxonomy
University of Buenos Aires
2016-2025
Fundación Ciencias Exactas y Naturales
2015-2025
Institute of Astronomy and Space Physics
2013-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2015-2024
Instituto de Ecología
2020
Google (United States)
2015
State University of New York
1995-1998
Stony Brook University
1995-1998
Universitat Autònoma de Barcelona
1988-1996
Comisión Nacional de Energía Atómica
1988
Abstract Previous work has shown thorax length to be under directional selection in the Drosophila buzzatii population of Carboneras. In order predict genetic consequences natural selection, variation for this trait was investigated two ways. First, narrow sense heritability estimated laboratory F2 generation a sample wild flies by means offspring-parent regression. A relatively high value, 0.59, obtained. Because phenotypic variance 7-9 times that raised laboratory, "natural" may as...
In the present report, we studied nucleotide variation in three gene regions of Drosophila melanogaster, spanning >5 kb and showing different degrees association with cosmopolitan inversion In(3-L)Payne. The analysis sequence surrounding breakpoints heat shock 83 (Hsp83) locus, located close to distal breakpoint, revealed absence shared polymorphisms presence a number fixed differences between arrangements, indicating genetic exchange. contrast, for esterase-6 region, center...
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 settled. In this work we investigate intraspecific variation interspecific divergence in male genitalic (size shape) cactophilic sibling species Drosophila buzzatii D. koepferae. Genital hybrids was examined compared corresponding parental lines. Despite being siblings, koepferae showed contrasting morphological...
Abstract As in most insect groups, host plant shifts cactophilic Drosophila represent environmental challenges as flies must adjust their developmental programme to the presence of different chemical compounds and/or a microflora that may differ diversity and abundance yeasts bacteria. In this context, wing morphology provides an excellent opportunity investigate factors induce changes during development. work, we investigated phenotypic plasticity instability on buzzatii koepferae raised...
High-throughput transcriptome studies are breaking new ground to investigate the responses that organisms deploy in alternative environments. Nevertheless, much remains be understood about genetic basis of host plant adaptation. Here, we genome-wide expression fly Drosophila buzzatii raised different conditions. This species uses decaying tissues cactus genus Opuntia as primary rearing substrate and secondarily, necrotic columnar Trichocereus terscheckii. The latter constitutes a harmful...
Highland populations of several Drosophila species in Argentina were active early the afternoon field as opposed to from a much warmer lowland site, where flies mainly evening prior sunset. For one these species, buzzatii, we tested for genetic component activity differences by carrying out crosses within and between measuring oviposition progeny laboratory. We found that highland population exceeded during midafternoon, whereas beginning dark period. Oviposition period corresponding...
Journal Article Drosophila koepferae: a New Member of the serido (Diptera: Drosophilidae) Superspecies Taxon Get access Antonio Fontdevila, Fontdevila 2Departamento de Genética y Microbiología, Universidad Autónoma Barcelona, Bellaterra (Barcelona), Spain. Search for other works by this author on: Oxford Academic Google Scholar Carles Pla, Pla Spain.4Colegio Universitario Girona, Esteban Hasson, Hasson Spain.5Departamento Ciencias Biólogicas, Laboratorio Evolución, Facultad Exactas...
Understanding the genetic architecture of ecologically relevant adaptive traits requires contribution developmental and evolutionary biology. The time to reach age reproduction is a complex life history trait commonly known as time. In particular, in holometabolous insects that occupy ephemeral habitats, like fruit flies, impact on fitness further exaggerated. present work one first systematic studies basis time, which we also evaluate environmental variation expression trait. We analyzed...
The present study first addressed the question of whether developmental time (DT) and viability (VT) vary clinally along latitudinal altitudinal gradients in Drosophila buzzatii, an autochthonous specialist generalist invasive melanogaster. Coincident positive clines across species and, direct inverse were observed for DT D. melanogaster respectively. Opposing detected VT only patterns prompted us to investigate flies living at lowland highland environments may respond differentially thermal...
The evolution of cactophily in the genus Drosophila was a major ecological transition involving over hundred species Americas that acquired capacity to cope with variety toxic metabolites evolved as feeding deterrents Cactaceae. D. buzzatii and koepferae are sibling cactophilic repleta group. former is mainly associated relatively toxic-free habitat offered by prickly pears (Opuntia sulphurea) latter has ability use columnar cacti genera Trichocereus Cereus contain an array alkaloid...
Abstract Inversion polymorphisms in the second and fourth chromosomes of cactophilic Drosophila buzzatti native distribution range species are described. Over 5,000 flies from 26 localities were scored revealing interesting geographic structuring arrangement frequencies. Multiple regression partial correlation approaches showed that frequencies chromosome arrangements vary clinically along latitudinal altitudinal gradients to a lesser extent with longitude. Although many non selective...
DNA sequence variation in a 1.1-kb region including the coding portion of Tpi locus was examined 25 homozygous third-chromosome lines Drosophila melanogaster, nine simulans, and one line yakuba. Our data show that widespread allozyme polymorphism observed cosmopolitan D. melanogaster is due to glutamic acid substitution occurring phylogenetically conserved lysine has been identified as part "hinged-lid" active site enzyme. This observation suggests replacement may have important functional...
Drosophila buzzatii and D. koepferae are two sibling species that breed on the necrotic tissues of several cactus show a certain degree niche overlap. Also, they differences in life history traits, such as body size developmental time, which probably evolved consequence adaptation to different host plants. In this work we investigate ecological genetic factors affecting wing morphology variation both within between species. Three traits were scored, distal proximal length width isofemale...
Host plant shifts in herbivorous insects often involve facing new environments that may speed up the evolution of oviposition behavior, performance-related traits, morphology, and, incidentally, reproductive isolation. In genus Drosophila, cactophilic species repleta group include emblematic study host utilization. The South American D. buzzatii and its sibling koepferae are a model system for differential use. Although these exhibit certain degree niche overlap, former breeds primarily on...
Abstract We tested for the occurrence of oviposition acceptance different media prepared with cactus tissues three alternative hosts: Opuntia sulphurea, O. quimilo and Trichocereus terschekii 4 consecutive days in lines two Drosophila buzzatii populations one population D. koepferae. Our results showed that former laid significantly more eggs on both cacti than T. terschekii, whereas koepferae preferred terschekii. In addition, fecundity schedules differed between species: similar numbers...
Abstract.— Developmental time and body size are two positively correlated traits closely related to fitness in many organisms including Drosophila. Previous work suggested that these involved a trade-off may result from negative genetic correlation between their effects on pre-adult adult fitness. Here, we examine the evolution of developmental (indexed by wing length) under artificial selection applied one or both replicated D. buzzatii populations. Directional changes length indicate...