A5022553986- Insect and Arachnid Ecology and Behavior
- Plant and animal studies
- Insect and Pesticide Research
- Entomopathogenic Microorganisms in Pest Control
- Insect-Plant Interactions and Control
- Ecology and Vegetation Dynamics Studies
- Forest Insect Ecology and Management
- Animal Behavior and Reproduction
- Soil Carbon and Nitrogen Dynamics
- Forensic Entomology and Diptera Studies
- Plant Parasitism and Resistance
- Induction Heating and Inverter Technology
- Insect Utilization and Effects
- Plant Taxonomy and Phylogenetics
- Insect behavior and control techniques
- Mediterranean and Iberian flora and fauna
- Animal Ecology and Behavior Studies
- Diatoms and Algae Research
- Geological Formations and Processes Exploration
- Magnetic Field Sensors Techniques
- Autoimmune and Inflammatory Disorders
- Study of Mite Species
- Botanical Research and Applications
- Plant and Biological Electrophysiology Studies
- Evolution and Genetic Dynamics
National University of Quilmes
2013-2023
Consejo Nacional de Investigaciones Científicas y Técnicas
2017-2023
Centro Científico Tecnológico - San Juan
2019
University Medical Center Brackenridge
2008
Agricultural Plant Physiology and Ecology Research Institute
1996-1999
University of Buenos Aires
1996-1999
University of Missouri–St. Louis
1995-1996
University of Utah
1992-1995
Abstract Aim Macroinvertebrates comprise a highly diverse set of taxa with great potential as indicators soil quality. Communities were sampled at 3,694 sites distributed world‐wide. We aimed to analyse the patterns abundance, composition and network characteristics their relationships latitude, mean annual temperature rainfall, land cover, texture agricultural practices. Location Sites are in 41 countries, ranging from 55° S 57° N 0 4,000 m elevation, rainfall 500 >3,000 mm temperatures...
An understanding of why introduced species achieve ecological success in novel environments often requires information about the factors that limit abundance these taxa their native ranges. Although numerous recent studies have evaluated importance natural enemies this context, relatively few examined how may result from differences magnitude interference competition between communities and ranges nonnative species. Here we examine native-range competitive relate to invasion for two...
In a greenhouse experiment, we compared presumed biotic, chemical, physical and phenological defenses of six myrmecophytic Peruvian Cecropia species under high low light regimes. For all species, increased intensity enhanced both dry mass production glycogen-rich Millerian bodies (MBs) levels condensed tannins total phenolics. The lipid-rich pearl (PBs), the leaf toughness, expansion rate new leaves were not consistently by higher intensity. comprised three pairs close congeners; each pair...
Summary 1. In Argentina, six species of Pseudacteon parasitoids (Phoridae) attack Solenopsis richteri , one the two South American fire ant that are exotic pests in North America. 2. The presence these significantly reduces number ants at food resources field, as well foraging activity generally. 3. Some not only walking on trails or feeding sites, but also mound entrances, inhibiting workers from leaving to forage. 4. average size (which prescribes their suitability hosts) decreased...
This review updates and summarizes the current knowledge about interaction of leaf-cutter ants their parasitoids by providing comparable data for Acromyrmex Atta ants. First, an overview relevant aspects biology taxonomy leaf cutters is provided. Second, I show peculiarities attacking behaviors towards host as well responses or ant defenses against phorids exhibited hosts. Third, discuss interactions between hosts parasitoids. Finally, ends demonstrating why these could be promising...
Host-searching and oviposition behaviors of parasitoids, defensive responses the hosts, are fundamental in shaping ecology host-parasitoid interactions. In order to uncover key behavioral features for little known interactions between phorid parasitoids (Diptera: Phoridae) their leaf-cutting ant hosts (Formicidae: Attini), host-related strategies (i.e., host searching oviposition) 13 species, hitchhikers particular body postures) 11 were studied. Data was collected at 14 localities, one them...
Leaf-cutting ants in the genus Atta F. (Formicidae, Attini) are among most important pest arthropods Central and South America, consuming more vegetation than any other animal group. Among organisms attacking nature, flies of family Phoridae have been proposed as promising biocontrol agents for ants. Four phorid species, Apocephalus setitarsus Brown, Myrmosicarius brandaoi Disney, gonzalezae Eibesfeldtphora trilobata were reared from collected at vollenweideri Forel nests off foraging trails...
Abstract Aim Saevissima group fire ants, Solenopsis richteri and S. invicta , have become serious pests when introduced from Argentina Brazil to other continents. In South America, are distributed across a great variety of habitats climates. North free phorids, now ranges coast in the south. Success introducing particular Pseudacteon as agents for biological control ants has varied climatic zones. We aimed at assembling all information about ant phorids Brazil, estimate their richness...
This study extends our comparative knowledge of Pseudacteon interactions with Solenopsis fire ant workers. Reported in this work are development times for seven Argentinean parasitoid species reared on two hosts, richteri Forel and invicta Buren, under laboratory temperature regimes comparable those the climatic zones occupied by these host species. Developmental spanned 31–66 d across phorid species, general did not differ between genders or but were longer at lower temperatures. The size...
Little is known about the natural history of phorid parasitoids leaf-cutting ants, an important pest in Neotropics. This particularly so for phorids attacking Acromyrmex species. We searched ovipositing and reared them from ants collected field. found that these formed a guild. selected all sizes available outside nests, whereas Atta did not parasitize smallest workers soldiers. Maximum parasitism by was 12% 35% hosts, percentages higher than any reported previously. Some species coexisting...
Classical biological control efforts against imported fire ants have largely involved the use of Pseudacteon parasitoids. To facilitate further exploration for species and population biotypes a database collection records was organized, including those from literature other sources. These data were then used to map geographical ranges associated with in their native range South America. In addition, we found metrics all genus related these latitude host use. Approximately equal numbers...
Abstract Aim Because of the obligatory relationship between endoparasitoids and their hosts, we presume that hosts exert strong selection pressure on parasitoids. One prediction is a positive host diversity parasitoid richness. This could be product resource availability which lead to more opportunities for speciation, or represent shared responses environment by both groups. Location Argentina Paraguay. Methods We sampled 1800‐km transect test correlation richness leaf‐cutting ant phorid...
Abstract To examine the susceptibility of five Costa Rican tree species to leaf‐cutter ants ( Atta cephalotes L.: Formicidae, Attini), young and mature leaves from trees that were grown in a plantation under full sun partial shade offered six colonies located shade. In addition offering leaf disks ants, we large pieces assess effect cutting on food choices. Leaf‐cutters responded differently each plant species, preferring Virola koschyni Warburg (Myristicaceae) Hyeronima alchorneoides...
We studied the developmental performance of large biotype Pseudacteon obtusus Borgmeier, a promising biological control agent imported fire ants. measured selected life history traits this parasitoid as function (1) host species (Solenopsis invicta Buren versus Solenopsis richteri Forel), (2) temperature (22 28°C), and (3) size distributions available ants (big mixed-size classes workers). Survivorship on S. was much greater than that S . under most conditions. Developmental time strongly...