Mariano Ordano

Mariano Ordano
Fundación Miguel Lillo

Doctor en Ciencias en Ecología y Manejo de Recursos Naturales
Working as a researcher at lillo.org.ar and ier.conicet.gov.ar

About

77
Publications
24,143
Reads
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892
Citations
Introduction
I am interested in the ecology and evolution of biotic interactions at several levels of biological organization. I'm exploring applications of the evolutionary ecology in biological conservation, agroecology, environmental and human health. ### Estoy interesado en la ecología y evolución de interacciones bióticas a varios niveles de organización biológica. Estoy explorando aplicaciones de la ecología evolutiva en conservación biológica, agroecología, salud humana y ambiental.
Additional affiliations
June 2019 - November 2021
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Position
  • Investigador Independiente
April 2010 - May 2019
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
Position
  • Investigador Independiente
December 2007 - November 2021
Fundación Miguel Lillo
Position
  • Professor (Full)
Education
August 1999 - March 2005
Instituto de Ecología A.C.
Field of study
  • Ecology and Management of Natural Resources
February 1987 - June 1993

Publications

Publications (77)
Article
Full-text available
The fact that pests are the most abundant species in agricultural settings has broadly precluded the attention to non-pest species and the study of temporal dynamics of diversity in agroecosystems. Because, agroecosystems hold increasingly important portions of biological diversity, understanding of non-pest species dynamics in such systems will co...
Article
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Fruit flies (Diptera: Tephritidae) are devastating agricultural pests worldwide but studies on their long-term population dynamics are sparse. Our aim was to determine the mechanisms driving long-term population dynamics as a prerequisite for ecologically based areawide pest management. The population density of three pestiferous Anastrepha species...
Article
We investigated temporal and spatial segregation of nectarivores at Agave marmorata inflorescences in Tehuacán, México. Using survival analysis, a technique in which data are treated as censored, we found temporal segregation among insects, hummingbirds, and perching birds during the most nectar-limited time. Survivorship curves of hummingbirds and...
Article
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Animal-pollinated angiosperm plants that respond positively to nectar removal by replenishment invest energy that can entail a reproductive cost. We investigated whether or not nectar removal stimulates replenishment in two hummingbird-pollinated bromeliad species. Nectar replenishment rates were also assessed by removing nectar from manually polli...
Article
Floral integration has been deemed an adaptation to increase the benefits of animal pollination, yet no attempts have been made to estimate its adaptive value under natural conditions. Here, the variation in the magnitude and pattern of phenotypic floral integration and the variance-covariance structure of floral traits in four species of Rosaceae...
Article
According to diet‐regulation hypotheses, animals select food to regulate the intake of macronutrients or maximise energy feeding efficiency. Specifically, the nutrient balance model proposes that foraging is primarily a process of balancing multiple nutrients to achieve a nutritional intake target, while the energy maximisation model proposes that...
Article
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Despite the economic, ecological, and evolutionary importance of the fruit infestation level by pulp-feeding insects, its meaning and measurement are confusing yet. We show the first overview of the fruit infestation level, which emphasizes the problems to define its biological meaning and estimation ways. Employing a literature search concerning t...
Article
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Fruiting phenology is a critical aspect of plant fitness, as it is directly linked to the next-generation offspring delivery. Both abiotic and biotic factors presumably exert natural selection on plant phenology. Despite the role of climate in shaping fruiting phenology is well established, whether frugivores exert phenotypic selection on fruiting...
Article
Woody plants can modify microclimate, nutrients, and seed availability in the soil. We studied the influence of two shrub species on species diversity, and seed density in the northern Monte desert soils. We hypothesized that the presence of shrubs affects species richness and seed density. We predicted a higher richness and seed density under shru...
Article
Knowledge about variations in allergenic pollen in the atmosphere is essential for human health programmes. This study aims to evaluate the influence of climatic variability on the arboreal pollen (AP) load, considering the annual, seasonal and intra-diurnal variability during ten years. We obtain data using a volumetric Burkard spore trap in San M...
Article
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The corn leafhopper Dalbulus maidis (DeLong) (Hemiptera: Cicadellidae), transmits three important plant pathogens that adversely affect corn crop and ranges from the USA to Argentina. The vector has a rich natural enemy complex that generates high levels of parasitism, but its populations are persistent and prevalent. We characterized the ovipositi...
Article
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Cactoblastis cactorum, a species of moth native to Argentina, feeds on several prickly pear cactus species (Opuntia) and has been successfully used as a biological control of invading Opuntia species in Australia, South Africa and native ruderal Opuntia species in some Caribbean islands. Since its introduction to the Caribbean its spread was uncont...
Article
Every organism on Earth must cope with a multitude of species interactions both directly and indirectly throughout its life cycle. However, how selection from multiple species occupying different trophic levels affects diffuse mutualisms has received little attention. As a result, how a given species amalgamates the combined effects of selection fr...
Article
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Plant performance is based on the relationship between resource acquisition and allocation to complete essential functions. Herbivory causes compromises in resource allocation that impact at the plant and within-plant (sub-individual) levels. This impacts fruit display traits which in turn affect reproductive success and seed dispersal. Because lea...
Article
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doi number to be established Sobre una interacción tritrófica pobremente conocida: Rhagoletotrypeta pastranai Aczél (Diptera: Tephritidae) y su parasitoide Utetes anastrephae (Viereck) (Hymenoptera: Braconidae) en frutos de Celtis ehrenbergiana (Klotzsch) Liebm. (Rosales: Cannabaceae) RESUMEN. Presentamos información sobre una interacción tritrófic...
Article
The use of multiple regression analysis to quantify the regime and strength of natural selection in nature has been an influential approach in evolutionary biology over the last 36 years. However, many studies fail to report the protocol of estimation of selection coefficients (selection gradients) and the specific model assumptions, thus failing t...
Poster
Full-text available
Introducción y objetivos: Passiflora caerulea L. es una enredadera endémica del sur de Sudamérica. Aunque es una especie común, de flores y frutos conspicuos, su fenología reproductiva no es conocida en detalle. El objetivo de este trabajo fue describir la variación en la fenología reproductiva, dentro y entre poblaciones de Argentina. M&M: Monitor...
Conference Paper
Full-text available
Environmental temperature affects the physiology, activity and life history of organisms, especially of poikilothermic organisms such as insects. The study and modelling of ecological phenomena driven by temperature has usually relied on in-situ data-loggers established in the investigated habitat, or on temperatures measured on meteorological stat...
Article
Trait-based approaches to disentangle assembly processes in ecological communities typically rely on average trait values obtained from the literature or databases. Recently, ecologists have shown growing concern in accounting for intraspecific variation in trait-based metrics. Besides intraspecific variation, plants and animals exhibit functio...
Article
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Planococcus ficus (Signoret) (Hemiptera: Pseudo-coccidae) constitutes a high impact pest in vineyards. Synthetic insecticides are inefficient to control the mealybug population and they affect human health and the environment. The insecticidal properties of eight volatile compounds against vine mealybugs and their grapevine leaf phytotoxicity in la...
Poster
Los bosques nativos brindan servicios ecosistémicos: protección de la erosión, mantenimiento de la dinámica bio-geo-química, provisión de medicinas y mantenimiento de animales nativos polinizadores de cultivos. Es muy poco conocido el potencial de los bosques como reservorio de parasitoides de moscas de la fruta de interés comercial. Exploramos el...
Article
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Herbivore mediated-selection shapes the evolution of defensive plant traits. Knowledge about the role of herbivores as mediators of selection is scarce and even more if herbivore functional groups are considered. The objectives of this work were (1) to describe the variation in foliar traits between populations and both between and intra-plants wit...
Article
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Peschiutta ML, Brito VD, Achimón F, Dambolena JS, Zygadlo JA, Ordano M. 2018. Botanical Compounds to Combat Vineyards Mealybugs: An Ideal Alternative for Organic Vitiviniculture. Research & Reviews: Journal of Botanical Sciences 7(3): 9-16. ----- The vine mealybug ( Planococcus ficus ) is a major pest in vineyards and is widespread in most grape-...
Article
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The analysis of atmospheric particles (aerosols) is of special interest due to their potential effects on human health and other applications. In this paper the climatic and seasonal effects on aerosols have been characterized in Tucumán city (26°50’ S, 65° 13’ W, 450 m asl), Argentina, for the 2006–2013 period. The atmospheric aerosols in Tucumán...
Article
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Grain quinoa is a halophyte crop with potentially increasing cultivation area. Yet, no standards exist for optimum plant density in arid-regions. The aim of this work was to evaluate the effect of planting density on Peruvian valley type of Chenopodium quinoa Willd. cv. CICA from the standpoint of yield and seed quality in marginal area. Two Field...
Article
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In seed-dispersal mutualisms, the number of fruit a plant displays is a key trait, as it acts as a signal for seed dispersers that entails fruit removal and exportation of reproductive units (fruit crop size hypothesis). Although this hypothesis has gained general acceptance, forces driving the shape and strength of natural selection exerted by bir...
Article
In deserts, shrubs determine landscape structure and influence plant productivity by creating nutrient-enriched environments. Attributes vary among shrub species, thus their contribution to soil characteristics is expected to vary as well, and nutrient input under shrub cover will depend on species attributes. We propose that plant size determines...
Article
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The natural history and mating behavior of a species of tephritid fruit fly in the poorly studied genus Haywardina are described for the first time. Haywardina cuculi Hendel larvae were recovered over four field seasons from infested fruit of Vassobia breviflora (Sendtn.) Hunz, which constitutes a new host plant record for this species. Recovered p...
Article
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In visually-driven seed dispersal mutualisms, natural selection should promote plant strategies that maximize fruit visibility to dispersers. Plants might increase seed dispersal profitability by increasing conspicuousness of fruit display, understood as a plant strategy to maximize fruit detectability by seed dispersers. The role of different pla...
Article
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Planococcus ficus is a principal mealybug pest of vineyards worldwide. Minthostachys verticillata and Eucalyptus globulus essential oils (EO) were evaluated as insecticidal products on P. ficus, and the main components of M. verticillata and E. globulus EO were also tested as insecticidal compounds against vine mealy-bug females under laboratory co...
Article
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Insect rearing for augmentative biological control requires knowledge of the factors affecting fertility to optimize mass production. In general, the practices employed are based on the results of successful experiences. However, in many cases, the verification of such practices other than those of their original conditions lacks published quantita...
Article
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Optimization of flower phenotypes to ensure pollination by agents differing in their match with fertile flower structures can involve fitness trade-offs if the aspects of the phenotype that enhance the fitness contribution of one pollinator are detrimental for pollination by the other agents. If these trade-offs are substantial, flower optimization...
Article
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Aims Animals in search of fleshy fruits forage mostly according to the number of available fruits and then select individual fruits based on reward quality or advertised subtle traits. This hierarchical pattern of fruit choice would be translated into patterns of selection strength mediated by frugivores on fruit display traits. Thus, frugivores wo...
Poster
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El riesgo de la recompensa variable: respuesta a la variación intra-individual en recompensas en sistemas de dispersión de semillas por aves
Article
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Background and aims: Floral integration is thought to be an adaptation to promote cross-fertilization, and it is often assumed that it increases morphological matching between flowers and pollinators, increasing the efficiency of pollen transfer. However, the evidence for this role of floral integration is limited, and recent studies have suggeste...
Article
Full-text available
Solanaceae is a family with nearly 2400 species of cosmopolitan distribution. Vassobia breviflora is the only species of the genus present in Argentina. The goal of this work was to review and characterize the anatomy of the flower and fruit of V. breviflora from samples collected in populations of Yungas in the argentine Northwest. Conventional an...
Article
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Bird foraging behaviour is a major factor involved in mutualistic interactions of fleshy-fruited plants. Despite much research, we still lack quantified demonstrations of how fruit display traits affect fruit removal behaviour. Although the fruit crop size hypothesis proposes a general mechanism for fruit trait selection, it overlooks the fact that...
Poster
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La forma e intensidad de la selección natural varían en el tiempo1. Sin embargo, la mayoría de los estudios de selección natural en el campo son de corto término. En sistemas planta-dispersor hay muy pocos estudios que superan una temporada reproductiva, aún entre plantas perennes, y ninguno de más de dos años. Si bien es comprensible que los estud...
Poster
Full-text available
El rol de las aves como frugívoros y agentes de selección natural en sistemas planta- dispersor de talares de Buenos Aires
Article
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The cactus moth, Cactoblastis cactorum mainly distributed throughout central and northeastern Argentina was intentionally introduced in the Caribbean region in 1957 as a biological control agent of cacti species of the genus Opuntia. This moth invaded during the last 20–30 years the North American continent, threatening the major center of biodiver...
Article
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Despite of the economic importance of the olive fly (Bactrocera oleae) and the large amount of biological and ecological studies on the insect, the factors driving its population dynamics (i.e., population persistence and regulation) had not been analytically investigated until the present study. Specifically, our study investigated the autoregress...
Conference Paper
Full-text available
1: Fundación Miguel Lillo, Miguel Lillo 251, Tucumán (4000), 2: Univ. Nac. Chilecito, 3: CONICET La fertilidad del suelo es esencial para la productividad natural y agrícola. En los desiertos, los arbustos son determinantes de la estructura del paisaje, e influyen sobre la productividad y biodiversidad, al generar microambientes enriquecidos en nut...
Article
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Background: In mutualistic interactions of fleshy-fruited plants and seed-dispersing birds, dispersers act as natural selection agents on fruit display traits. Bird-mediated phenotypic selection on maternal and seed level plant traits has been postulated to be uncoupled. However, this key step in the understanding of the co-evolutionary processes h...
Article
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The augmentative biological control of Diatraea saccharlis Fabricius (Lepidoptera: Crambidae) requires the mass rearing of the parasitoid Cotesia flavipes Cameron (Braconidae: Microgastrinae), and for this, it's necessary the development of efficient artificial diets. The goal was to examine the effects of different diet types on biological paramet...
Article
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The effects of different simulated rainfall regimes on water relations, growth, and biomass production and allocation of five provenances of Cedrela fissilis, C. saltensis and C. balansae were assessed in a pot-grown seedling experiment in greenhouse under uncontrolled conditions. Four simulated rainfall regimes were applied: 600 mm year−1 (severe...
Article
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Utetes anastrephae (Viereck) and Doryctobracon areolatus (Szépligeti) are common, native, Neotropical braconid parasitoids of tephritid fruit flies that are sympatric and often found attacking the same host. The coexistence of the two species may be due in part to the longer ovipositor of D. areolatus that permits it to attack larvae in larger frui...
Conference Paper
Full-text available
La intensidad de la acción de la selección natural es representada básicamente con parámetros de modelos de regresión. Por su relación con el coeficiente de correlación producto-momento de Pearson (r), la variación en la intensidad de la selección puede estudiarse con aproximaciones meta-analíticas. Estas aproximaciones se emplean bajo el supuesto...
Poster
Full-text available
Exploración de la relación entre el coeficiente de correlación y el diferencial de selección direccional para su uso en meta-análisis de estudios de selección natural
Article
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Autocompatibilidad y selección mediada por polinizadores sobre el despliegue floral en una población de Psychotria carthagenensis (Rubiaceae) Resumen — Benavidez, Analía; Mariano Ordano; Mariana Valoy. 2013. "Autocompati-bilidad y selección mediada por polinizadores sobre el despliegue floral en una población de Psychotria carthagenensis (Rubiaceae...
Article
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Caracterización de la variación intra-individual en tamaño y forma del fruto en Psychotria carthagenensis Jacq. (Rubiaceae) Resumen — Ordano, Mariano; Karina Aguilar Tejada; Analía Benavídez. 2011. "Caracterización de la variación intra-individual en tamaño y forma del fruto en Psychotria carthagenensis Jacq. (Rubiaceae)". Lilloa 48 (2). La variaci...
Article
Because pollinators are unable to directly assess the amount of rewards offered by flowers, they rely on the information provided by advertising floral traits. Thus, having a lower intra-individual correlation between signal and reward (signal accuracy) than other plants in the population provides the opportunity to reduce investment in rewards and...
Article
The juvenile hormone (JH) analog methoprene reduces the amount of time it takes laboratory-reared Anastrepha suspensa (Caribbean fruit fly) males to reach sexual maturity by almost half. Here, we examined if methoprene exerted a similar effect on four other tropical Anastrepha species (Anastrepha ludens, Anastrepha obliqua, Anastrepha serpentina an...
Article
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Les plantes angiospermes à pollinisation par les animaux qui répondent positivement au retrait de nectar par le réapprovisionnement investissent de l'énergie ce qui peut entraîner un coût reproductif. Dans une expérience de manipulation, nous avons utilisé le retrait de nectar afin d'étudier si le retrait cause une augmentation de la production tot...
Article
Full-text available
For more than a century the idea that natural selection favors high levels of floral integration has prevailed as a paradigm among floral biologists. However, there is very little empirical evidence of the adaptive value of floral integration. In this addendum we highlight an important result derived from an empirical study complemented with a lite...
Article
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We assessed short-term bird responses to three management regimes: (1) unburned-ungrazed (CLOSURE), (2) burned-ungrazed (BURNING), (3) grazed-unburned (GRAZING), in a 335 ha grassland area. We sampled birds and vegetation in seven transects, three transects in CLOSURE, two in BURNING and two in GRAZING. We detected 398 individuals of 30 species in...
Article
We tested whether phylogeny, flower size and/or altitude were significant predictors of interspecific variation in nectar production of hummingbird-visited plants in an assembled database (289 species, in 22 orders, 56 families and 131 genera). Although the study is focused on hummingbird-pollinated plants (241 plant species), plants with different...
Article
We analyzed immature-to-mother social distance (juveniles and non-nursing infants) in two Mexican mantled howler monkey (Alouatta palliata) troops inhabiting a tropical rainforest fragment (40 ha) at Los Tuxtlas, Veracruz, Mexico. During July and August of 2000 and 2001 we applied an instantaneous sampling method (317 hr) to record the behaviors of...
Article
Full-text available
Animal-pollinated angiosperm plants that replenish removed nectar invest energy that can entail a reproductive cost. Here we investigated whether or not seed production is affected by replenishing nectar in hummingbird-pollinated Tillandsia multicaulis and T. deppeana (Bromeliaceae) in a montane cloud forest in eastern Mexico. These epiphytic plant...