Resultados de búsqueda - EGGS

Comportamiento de oviposición de la avispa sierra del sauce Nematus oligospilus (Hymenoptera: Tenthredinidae): el rol de los semioquímicos en la elección de plantas hospederas por Braccini, Celina Laura

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Epidemiology of Goat Nematode Infections in Different Ecological Regions of Argentina´S Northwest por Suarez, Victor Humberto, Martinez, Gabriela Marcela, Olmos, Leandro Hipolito

“…Ten flocks were studied and 35 to 40 goats per flock (total= 420 goats) were fecal matter sampled each 30-40 days. Individual eggs per gram of faeces (epg) and faeces cultures were performed. …”
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Resting ecology of parasitoids in the field: safe in a bed and breakfast? por Tena, Alejandro, Bouvet, Juan Pedro, Abram, Paul K.

“…During the day, wasps with lower egg loads tended to remain on leaves, likely resting and maturing eggs. …”
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Population dynamics of the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical subhumid region of Argentina for use in the design of control strategies por Canevari, Jose Tobias, Mangold, Atilio Jose, Guglielmone, Alberto, Nava, Santiago

“…The non-parasitic phase of R. microplus was characterized by a long total non-parasitic period observed after exposures of females from mid-summer to early autumn, a short total non-parasitic period observed after exposures of females from late winter to late spring, a short period of larval longevity in early and mid-summer, and no hatch of the eggs produced by females exposed in mid- and late autumn and winter. …”
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Food and Host Searching Decisions Made by Ibalia leucospoides (Hymenoptera: Ibaliidae), a Parasitoid of Sirex noctilio (Hymenoptera:Siricidae) por Pietrantuono, Ana Laura, Fernandez Arhex, Valeria Cristina, Jofre, Nelida Raquel, Corley, Juan Carlos

“…Feeding on sugar-rich products or else on host fluids (i.e. host-feeding) may imply benefits in terms of future fitness, by for instance increasing egg laying opportunities through increased egg production or longevity (Chapman 1998; Speight et al. 1999). …”
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La cría de gallinas ponedoras por Cantaro, Horacio Luis

“…Por otro lado, el empleo de jaulas en la cría de gallinas para producción de huevos ha sido motivo de grandes polémicas en Dinamarca, Inglaterra, Suecia y Suiza, por citar países donde ya se ha legislado al respecto, y en Inglaterra, por ejemplo, un tercio de los huevos vendidos en grandes supermercados provienen de granjas con gallinas en libertad -“free range eggs”-, con gran promoción y a precios que duplican el de los huevos comunes. …”
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Effect of deforestation and introduction of exotic grasses as livestock forage on the population dynamics of the cattle tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae) i... por Nava, Santiago, Mastropaolo, Mariano, Guglielmone, Alberto, Mangold, Atilio Jose

“…Biological parameters that were measured included proportion of females ovipositing, pre-oviposition period, incubation period of eggs, proportion of egg clusters hatching, larval longevity and total non-parasitic period. …”
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Spatial density‐dependent parasitism and specificity in the robber fly Mallophora ruficauda (Diptera: Asilidae) por Castelo, Marcela Karina, Corley, Juan Carlos

“…Typically, robber fly females lay eggs on tall grasses from where larvae drop to the ground, and attack hosts which are buried in the soil. …”
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First biological data of Ceresa nigripectus [Hemiptera:Membracidae], a common treehopper on alfalfa crops in Argentina por Perez Grosso, Tomas, Conci, Luis Rogelio, Saavedra Pons, Amalia Beatriz, Marino, Ana María, Virla, Eduardo G.

“…Females do not tend their broods. Eggs are laid individually and rarely 2 or 3 were found in the same slit. …”
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Development of Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae) on Eucalyptus camaldulensis Dehnh. and Eucalyptus dunnii Maiden por Cuello, Eliana Marina, Lopez, Silvia Noemi, Andorno, Andrea Veronica, Hernandez, Carmen Marcela, Botto, Eduardo Norberto

“…We also identifed the meteorological variables associated with changes in the red gum lerp psyllid abundance. 3 The abundance of eggs, nymphs and adults stages of G. brimblecombei was signifcantly greater on E. camaldulensis than on E. dunnii in the 2 years of the survey. 4 Glycaspis brimblecombei development was complete on E. camaldulensis where all instars were present, even in the unfavourable seasons. …”
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Oviposition and olfactometry response of codling moth (Cydia pomonella) to quince (Cydonia oblonga) cultivars por Gomez, María Pía, Jofré Barud, Flavia, Díaz, Ariel, Lopez, María Liza

“…In the oviposition assay, all pairwise comparisons showed significant differences in the number of the eggs laid, with Smyrna and Champion being the cultivars most preferred. …”
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Resistance of Fasciola hepatica against triclabendazole in cattle in Patagonia (Argentina) por Olaechea, Fermin, Lovera, V., Larroza, Marcela Patricia, Raffo, Fernando, Cabrera, Raul Francisco

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Epidemiology and effect of gastrointestinal nematodes on beef cattle from tropical Argentina por Suarez, Victor Humberto, Martinez, Gabriela Marcela, Micheloud, Juan Francisco, Viñabal, Alberto

“…Moreover, a group of 20 untreated first-calving cows was monitored. Eggs per gram of faeces (epg) and faeces cultures were performed. …”
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Cross-protection conferred by live-attenuated Salmonella Enteritidis vaccine against S. Heidelberg and S. Infantis por Joaquim, Patricia Estefania, Balbiani, Facundo, Socas, Maria Laura, Arenas Mosquera, David José, Sara, Lucas, Sarabia, Jaime, Paulet, Pascal, Sesti, Luiz, Chacana, Pablo

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Study of the life cycle of Amblyomma dubitatum (Acari: Ixodidae) based on field and laboratory data por Debarbora, Valeria Natalia, Mangold, Atilio Jose, Oscherov, Elena. B., Guglielmone, Alberto, Nava, Santiago

“…Exposure of ticks to field conditions indicates a delay in metamorphosis of immature stages, in the oviposition of females and in the incubation of eggs, which were associated with low winter temperatures. …”
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Evidencia adicional de que Nephelium lappaceum no es hospedante natural de tres especies de moscas de la fruta en Honduras por Vásquez, L.A., Krigsvold, D.T.

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Fall armyworm and neotropical cornstalk borer on sorghum and maize intercropped with legumes in Honduras por Castro, M.T, Pitre, H.N, Meckenstock, D.H

“…Numbers of adults and eggs of the predaceous earwig Doru taeniata were similar in plots with or without pigeonpea in 1986, but they were higher in plots with cowpea in 1987. …”
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Occurrence of endoparasites in creole goats under an extensive production system on the southern coast of Peru por Sessarego Davila, Emmanuel Alexander, Soca Jorge, Jhony, Terán Rojas, Jose Alfonso, Dávalos Almeyda, María Emilia, Valdivia Zevallos, Justo, Ruiz Chamorro, Jose Antonio, Cruz Luis, Juancarlos Alejandro, Cruz Flores, Danny Julio

“…Fecal samples were collected from 129 goats in two localities of the Pisco province to detect the presence of oocysts from Eimeria spp. and eggs from trichostrongyles, Skrjabinema spp., Trichuris spp., and Fasciola hepatica. …”
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Bicaudal C is required for the function of the follicular epithelium during oogenesis in Rhodnius prolixus por Pascual, Agustina, Vilardo, Emiliano Salvador, Taibo, Catalina Beatriz, Sabio Y Garcia, Julia Veronica, Rivera Pomar, Rolando

“…However, the molecular interactions that regulate the process of egg formation, key for the reproductive cycle of the vector, is still largely unknown. …”
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A new model formulation for host depletion in parasitoids por Bruzzone, Octavio Augusto, Rossini, Luca, Aguirre, María Belén, Logarzo, Guillermo Alejandro

“…We studied the behaviour of these models to understand how a variation of their parameters led to different shapes of functional response curves and statistical distributions of the number of parasitoid eggs laid per host. The results showed that the expected curves differ from those predicted by the simpler Holling's disk equation (type II functional response), random parasitoid models (no depletion), and the random predator model (proportional depletion). …”
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