Search results for " multiparasitism"

showing 3 items of 3 documents

Climate change impact on extrinsic and intrinsic competition between egg parasitoids

2012

Climate changing is a real phenomenon and the last decade was the warmest decade ever. The impact of climate change on animal communities is complex, affecting species interactions in all trophic levels, in different ways and in different bio-geographic zones. Here we will discuss about the possible effects of climate changes in shaping the competition between egg parasitoid species to consume the same hosts. Egg parasitoids are important biological control agents due to their ability to kill the pest before the crop-feeding stages emerge. Competitive effects can be divided in “extrinsic competition”, the indirect interactions between adult females searching for hosts, and “intrinsic compet…

Settore AGR/11 - Entomologia Generale E Applicataspecies interactions global warming host location multiparasitism
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Intrinsic competition between two European egg parasitoids of the brown marmorated stink bug

2020

Following the accidental introduction and spread of the invasive polyphagous agricultural pest Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), the two European egg parasitoids Anastatus bifasciatus (Geoffroy) (Hymenoptera: Eupelmidae) and Ooencyrtus telenomicida (Vassiliev) (Hymenoptera: Encyrtidae) have been investigated for inundative biological control. Since the competititve outcome between the two generalist parasitoids is difficult to predict, intrinsic competition was investigated with a time-course development study. Both species readily oviposited in H. halys eggs containing eggs and early instar larvae of the competitor, but oviposition decreased when eggs contained late insta…

EcologyOoencyrtus telenomicidamedia_common.quotation_subjectBiological pest controlBiologybiology.organism_classificationInvasive speciesCompetition (biology)Anastatus bifasciatus biological control Halyomorpha halys invasive species multiparasitism Ooencyrtus telenomicidaSettore AGR/11 - Entomologia Generale E ApplicataInsect ScienceBrown marmorated stink bugAgronomy and Crop Sciencemedia_commonJournal of Applied Entomology
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Parasitismo Intestinal en Población Infantil de las Regiones Atlánticas de Nicaragua

2018

La presente Tesis Doctoral tiene como objetivo establecer el espectro parasitario intestinal de la costa Atlántica de Nicaragua, concretamente de la Región Autónoma del Atlántico Norte (RAAN) y la Región Autónoma del Atlántico Sur (RAAS). Para ello, se ha estudiado un total de 1878 escolares (1009 niñas y 869 niños), con edades comprendidas entre <1 y 14 años de edad. Se ha detectado un espectro parasitario total de al menos 18 especies parásitas (10 protozoos y 8 helmintos), con una prevalencia de parasitación total de 93.7%, observándose mayor prevalencia de protozoos que de helmintos (85.3% vs 61%). Las especies más prevalentes detectadas fueron Blastocystis spp. (68.2%), seguido de T. t…

Protozoos helmintos espectro parasitario prevalencia multiparasitismo anemia población infantil Región Autónoma del Atlántico Norte (RAAN) Región Autónoma del Atlántico Sur (RAAS) Nicaragua.
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