Cristian Montalva

ORCID: 0000-0002-8357-774X
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About
Contact & Profiles
Research Areas
  • Entomopathogenic Microorganisms in Pest Control
  • Plant Pathogens and Fungal Diseases
  • Forest Insect Ecology and Management
  • Insect Resistance and Genetics
  • Insect-Plant Interactions and Control
  • Insect symbiosis and bacterial influences
  • Mycorrhizal Fungi and Plant Interactions
  • Insect Pest Control Strategies
  • Insect and Arachnid Ecology and Behavior
  • Infectious Diseases and Mycology
  • Plant Parasitism and Resistance
  • Insect behavior and control techniques
  • Biological Control of Invasive Species
  • Forest Ecology and Biodiversity Studies
  • Plant Disease Resistance and Genetics
  • Nematode management and characterization studies
  • Insect and Pesticide Research
  • Lichen and fungal ecology
  • Plant Pathogens and Resistance
  • Yeasts and Rust Fungi Studies
  • Insect Utilization and Effects
  • Fungal Biology and Applications
  • Insects and Parasite Interactions
  • Forensic Entomology and Diptera Studies
  • Plant-Microbe Interactions and Immunity

Austral University of Chile
2016-2025

Universidade Federal de Goiás
2016-2022

A new species, Metarhizium humberi, from the M. anisopliae complex and sister lineage of s.str. in PARB clade, including pingshaense, anisopliae, robertsii brunneum, is described based on phylogenetic analyses [translation elongation factor 1-alpha (5'TEF 3'TEF), RNA polymerase II largest subunit (RPB1a), second (RPB2a) β-tubulin (BTUB)]. humberi was first collected 2001 Central Brazilian state Goiás, later found to be a common fungus soils Brazil, since then has also been isolated...

10.1016/j.jip.2019.107216 article EN publisher-specific-oa Journal of Invertebrate Pathology 2019-07-09

Background: Berry crops in Southern Chile with a temperate humid climate are threatened by emerging invasive Drosophila suzukii , and there is urgent need to provide efficient tools for integrated control of this pest. Objective: This study aims compare the potential selected entomopathogenic Beauveria bassiana Metarhizium spp. strains produce fungal propagules new conidia on microsclerotia. Materials: Strains isolated from soil samples collected affected berry plantations highly virulent...

10.1177/18785093251329805 article EN Journal of Berry Research 2025-04-04

Scolomus Townes & Townes, 1950 is a genus in Ichneumonidae, with six species occurring the Holarctic and Neotropical regions. In this study, new described from Chile, Scolomusvalenzuelai Araujo, Pádua Silva-Santos, sp. nov. Also, female of S.magellanicus Walkley, 1962 for first time occurrences S.maculatus Araujo Vivallo, 2018, are reported including northernmost record South America. Additionally, we provide an updated identification key all known genus.

10.3897/zookeys.1234.145472 article EN cc-by ZooKeys 2025-04-10

Canker disease caused by Corinectria constricta has resulted in significant losses of Pinus radiata for the Chilean forestry industry recent years. Accurate and prompt detection identification pathogen is essential this context. In study, a set molecular markers was developed using multiple alignments actin-1 (ACT) β-tubulin (Btub) gene regions to detect genus vitro. The designed were evaluated specificity sensitivity conventional PCR assays, which successfully differentiated species from...

10.3390/f16040697 article EN Forests 2025-04-18

En este estudio se examinaron 19 casos de escarabajos (Insecta: Coleoptera) con malformaciones morfológicas, pertenecientes a la Colección Entomológica Ernesto Krahmer (Valdivia, Chile). Las anomalías reportadas incluyen braquielitría, cistelitría, distrofia, ectromelia, hemibraquielitría, esquistomelia, sinfisoceria, trematoelitría y aberraciones elitrales, afectando múltiples especies familias Coleoptera. Se realizó un análisis detallado cada caso, acompañado fotografías e ilustraciones,...

10.35249/rche.51.2.25.09 article ES cc-by-nc REVISTA CHILENA DE ENTOMOLOGÍA 2025-05-29

To survey and to characterize entomopathogenic fungi as natural enemies of mosquitoes in Central Brazil. Tolypocladium cylindrosporum (Hypocreales, Ophiocordycipitaceae) was isolated for the first time South America by using Aedes aegypti (Diptera, Culicidae) sentinel larvae a stagnant mosquito breeding site secondary tropical forest. Two isolates were morphologically molecularly identified, their activity tested against A. eggs, adults. Findings emphasize importance T. fungal antagonist...

10.1111/jam.14093 article EN Journal of Applied Microbiology 2018-08-30

Numerous isolates of an oomycete 'fungus', Leptolegnia chapmanii, are reported from Brazil for the first time. This aquatic pathogen was baited with Aedes aegypti sentinel larvae stagnant, temporary bodies water in selected locations under secondary tropical forest and near central Brazilian city Goiânia more distant sites western northern regions state Goiás. Isolates were identified based on their morphological developmental characters, comparative sequence data ITS TEF loci, as well rapid...

10.1016/j.jip.2016.03.012 article EN publisher-specific-oa Journal of Invertebrate Pathology 2016-03-23

The cypress aphid Cinara cupressi is considered one of the most important exotic invasive species in world and now present all national continental territory, affecting native forest like ciprés de la cordillera (Austrocedrus chilensis) alerce (Fitzroya cupressoides), as other used for ornamental trees urban area.The area Chile has promoted privileged use biological controls part integrated pest management; so Pauesia juniperorum been to control C. cupressi; however, low levels parasitism...

10.4067/s0717-92002010000200001 article EN Bosque (Valdivia) 2010-01-01

Conidiobolus obscurus is a widespread fungal entomopathogen with aphid biocontrol potential. This study focused on de novo transcriptomic analysis of C. obscurus.A number pathogenicity-associated factors were annotated for the first time from assembled 17 231 unigenes, including those encoding subtilisin-like proteolytic enzymes (Pr1s), trypsin-like proteases, metalloproteases, carboxypeptidases and endochitinases. Many these genes transcriptionally up-regulated by at least twofold in...

10.1002/ps.4861 article EN Pest Management Science 2018-01-16

In southern Chile, forage corn (Zea mays L.) is grown for feeding animals in milk diaries and livestock production. December 2010, plants with small circular spots on leaves were collected from three fields located Río Negro (Los Lagos region). Symptoms began as small, white to brown of 5 10 mm different parts the leaf necrotic tissue irregular burgundy margins border tip leaf. Estimated visual severity was ~5 40% each field samples. Twelve blocks taken edge infected leaves, surface...

10.1094/pdis-12-12-1120-pdn article EN other-oa Plant Disease 2013-04-17

Three species of Neozygites were recorded during a 2007–13 survey the occurrence genus on aphids in Chile. osornensis is known from recent studies, and N. fresenii cinarae are reported as new records for lageniformis , which was not found survey, had been previously Morphological descriptions, symptoms infected insects, host spectrum, geographical distribution all four presented, key to associated with Chile included. These fungi, important natural enemies aphids, may be considered future...

10.5248/129.233 article EN cc-by-nc-nd Mycotaxon 2015-01-08

Fungi are where one finds them, and if seeks fungal pathogens affecting flies, then a garbage dump may be an ideal place to find both persistent, abundant fly populations their pathogens. An obvious epizootic the oriental latrine fly, Chrysomya megacephala (Diptera: Calliphoridae), was observed over several days in mid-February 2015 at local adjacent city of Cavalcante, northern Goiás. This site harbored large C. Musca sp. Muscidae) but only population affected by any pathogen presented...

10.1016/j.actatropica.2016.03.007 article EN publisher-specific-oa Acta Tropica 2016-03-14

In Chile, the invasive and noxious pest Vespula vulgaris (L.) (Hymenoptera: Vespidae) was first reported in 2011 Araucanía region is currently distributed between Magallanes regions. Mar 2015 (autumn), during an ongoing monitoring of funnel traps by Servicio Agrícola y Ganadero, a fungus-infected individual collected. The fungus identified morphologically as species Hirsutella (Hypocreales: Ophiocordycipitaceae). This report any on V. Chile. No vitro cultures were successfully established...

10.1653/024.100.0327 article EN cc-by Florida Entomologist 2017-09-01
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