An overview of the macrocyclic lactones (ML), with recent results and their effect on control Rhipicephalus (Boophilus) microplus, is presented in this paper.This review describes detail chemistry, pharmacokinetics dose presentation, security time withdrawal environmental safety groups belonging to ML: avermectins (ivermectin, doramectin, eprinomectin, abamectin) milbemycin (moxidectin).There also a discussion efficacy problem resistance R. (B.) microplus ML.Finally, it concluded that due...

Previous work has documented toxic effects of ivermectin (IVM) on dung beetles from the Old World, but very little is known about this drug's effect Neotropical beetles. Accordingly, we conducted a bioassay with spiked IVM to assess its lethal and sublethal beetle Onthophagus landolti Harold . The experimental design consisted five treated groups G1, G2, G3, G4, G5 receiving 0.001, 0.01, 0.1, 1.0, 10 mg IVM/kg fresh weight, respectively, two control (solvent [CGA] untreated [CGU]). Adult...

Gastrointestinal nematodes cause serious economic losses in sheep production systems. To determine the prevalence and risk factors associated with these parasites, a study was conducted on 595 Córdoba, Colombia. Prevalence parasite burden were determined using McMaster technique. Larvae cultured from feces to identify nematode genera. For analysis of burden, data means, medians, confidence intervals compared. A georeferenced performed an epidemiological map constructed. An overall 88.2%...

Abstract Two bioassays were conducted in parallel to assess the effects of cattle treated with either 1% ivermectin (IVM) or 3.15% IVM (dosed at 0.2 and 0.63 mg kg −1 , respectively) on reproduction survival Onthophagus landolti Harold. Adult beetles exposed 10 days faeces starting at: one day before treatment (controls), 3, 6, 14, 28 35 post-treatment. O. was not affected by two treatments. Faecal residues almost completely suppressed fecundity 6 14 post-treatment (dPT), reduced dPT (...

Las avermectinas, milbemicinas y espinosinas forman parte de las lactonas macrocíclicas (LM), endectocidas que se obtienen por fermentación diferentes especies microorganismos del suelo. LM son usadas ampliamente en medicina veterinaria agricultura debido a su potente actividad contra nemátodos artrópodos. Sin embargo, estos compuestos al ser eliminados heces animales, causan efectos adversos sobre la fauna edáfica asociada estiércol. Esta revisión tiene objetivo documentar los avermectinas...

Las infestaciones de la garrapata del ganado, Rhipicephalus microplus , producen el mayor problema global ectoparasitos en ganado regiones tropicales y subtropicales, provocando grandes perdidas economicas produccion bovina. El control R. se basa principalmente uso ixodicidas; sin embargo, su irracional ha propiciado aparicion garrapatas resistentes a las principales familias ixodicidas. Esto hace necesario desarrollo alternativas control, incluyendo empleo practicas manejo los animales,...

Ivermectin (IVM) is widely used for parasite control in livestock the tropics. Residual IVM feces conserves its insecticide activity weeks and can harm dung beetle (DB) species. Attraction to of IVM-treated cattle was tested using DB species Onthophagus landolti (Harold) Canthon indigaceus chevrolati as models. Experiments were done under controlled laboratory conditions, semi-controlled field conditions uncontrolled conditions. Olfactometers trials. The treatment baited IVM-free feces,...

The life history and morphology of the third instar pupa are described for Onthophagus landolti Harold, 1880 (Coleoptera: Scarabaeidae). Instar developmental time was determined by analyzing cephalic width data using generalized linear models. Morphological descriptions were done pupa, comparing taxonomically relevant characters to other species Latreille, 1802 species. Developmental took 30 days from egg teneral imago. period lasted 2–3 days, larval 20–22 6–8 days. Cephalic ranged...

Objetivo. El presente estudio tiene por objetivo reportar primera vez el caso de un ovino que adquirió la infección natural con Nematodirus filicollis en condiciones clima tropical sub-húmedo. Materiales y métodos. Se tomó una muestra heces fue procesada para identificar cuantificar excreción huevos nematodos gramo (h/gh) mediante las pruebas Flotación Centrifugada McMaster. Asimismo, se realizó cultivo larvas prueba Corticelli-Lai. Resultados. presentó nematodiasis mixta Trichuris spp. (100...

The brown dog tick (Rhipicephalus sanguineus lato sensu) is the that most affects dogs worldwide and therefore main blood pathogen vector in dogs. efficacy of afoxolaner 2.7 to 7.1 mg/kg NexGard® (group A) plus milbemycin oxime 2.5 5.4 0.5 1.1 respectively NexGard Spectra® (Group B) against R. sanguineus, was evaluated naturally infected sheltered under high challenging conditions four different areas Colombia (Antioquia, Córdoba, Santander, Meta). Tick counts (alive, dead, attached,...

<p><strong>Background</strong>. Macrocyclic lactones (ML) are effective in controlling endo- and ectoparasites livestock. ML, specially ivermectin moxidectin, have a typical pharmacokinetic profile of lipophilic molecules with slow degradation when administered to livestock excreted the faeces almost unaltered. ML released into environment, can cause lethal sublethal effects on dung beetles (DB). <strong>Objective. </strong>To document main scientific...

Abstract Gastrointestinal nematodes cause serious economic losses in sheep production systems. To determine the prevalence and risk factors associated with these parasites, a study was conducted 595 Córdoba, Colombia. Prevalence parasite burden were determined using McMaster technique. Larvae cultured from feces to identify nematode genera. For analysis of burden, means, medians confidence intervals compared. A geo-referenced data performed an epidemiological map constructed. An overall...