http://repositoriobiologico.com.br//jspui/handle/123456789/31 2026-07-07T22:55:44Z http://repositoriobiologico.com.br//jspui/handle/123456789/1320 Title: Predation and oviposition performance of Amblydromalus limonicus when fed with different life stages of Brevipalpus yothersi Authors: Riquelme, Guilherme; Mineiro, Jeferson Luiz de Carvalho; Sato, Mário Eidi Abstract: Citrus leprosis is one of the most critical diseases in citrus orchards in Brazil. The use of predatory mites from the family Phytoseiidae may represent a promising alternative for controlling Brevipalpus yothersi, the main vector of the citrus leprosis virus. The study was carried out to evaluate the potential use of Amblydromalus limonicus for the biological control of B. yothersi, verifying predation rates on different life stages (eggs, larvae, and adults) of leprosis mite and observing predator oviposition rates resulting from its feeding behaviour. Description: Citrus leprosis is one of the most critical diseases in citrus orchards in Brazil. The use of predatory mites from the family Phytoseiidae may represent a promising alternative for controlling Brevipalpus yothersi, the main vector of the citrus leprosis virus. The study was carried out to evaluate the potential use of Amblydromalus limonicus for the biological control of B. yothersi, verifying predation rates on different life stages (eggs, larvae, and adults) of leprosis mite and observing predator oviposition rates resulting from its feeding behaviour. The predator showed a high predation rate for eggs and larvae of B. yothersi, consuming in average 76.8 eggs and 69.5 larvae of the mite per predator female per day, for the highest prey density (80) per arena. This feeding resulted in oviposition rates of up to 1.75 and 2.0 eggs per female predator per day, for eggs and larvae of B. yothersi, respectively. In the case of B. yothersi adults, the predation rates were very low (≤0.25 adults per predator female per day). The results indicate that A. limonicus has potential for use as a biological control agent for the citrus leprosis mite. 2025-01-01T00:00:00Z http://repositoriobiologico.com.br//jspui/handle/123456789/1318 Title: First report of the genus Parabonzia Smilley Authors: Riquelme, Guilherme; Martins Gomes de Castro, Tatiane Marie; Carvalho Mineiro, Jeferson Luiz de; Sato, Mario Eidi Abstract: We report the predatory mite Parabonzia xinningensis Chen & Jin, 2020 (Acari: Cunaxidae), collected from leaves of Citrus sinensis (L.) Osbeck (Rutaceae) in the municipality of Mogi Mirim, state of São Paulo, Brazil. This is the first record of a mite of the genus Parabonzia for the country and for South America. Description: Cunaxidae (Acari: Prostigmata) is composed exclusively of free-living predatory mites, which feed on a wide range of organisms, such as other mites, insects, nematodes and fungi (Walter and Kaplan 1991; Den Heyer 2009). Currently, the family is comprised of 463 species distributed in 32 genera worldwide (Skvarla 2025). Most of South America has not been surveyed for Cunaxidae and diversity in many areas is unknown. However, Brazil has received the most attention, with 22 of the worldwide genera recorded in the country (Wurlitzer et al. 2020; Wurlitzer et al. 2021; Rocha and Ferla 2025). 2025-01-01T00:00:00Z http://repositoriobiologico.com.br//jspui/handle/123456789/1317 Title: High-Throughput Mega-Method for the Analysis of Pesticides, Veterinary Drugs, and Environmental Contaminants by Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry and Robotic Mini-Solid-Phase Extraction Cleanup + Low-Pressure Gas Chromatography-Tandem Mass Spectrometry, Part 2: Catfish Authors: Ninga, Ederina; Sapozhnikova, Sapozhnikova; Lehotay, Steven J; Lightfield, Alan R; Monteiro, Sergio H Abstract: The goal of this study was to develop and validate a new method for simultaneous determination of 106 veterinary drugs and 227 pesticides and their metabolites plus 16 polychlorinated biphenyls (PCBs) at and below their regulatory levels established for catfish muscle in the European Union and U.S.A. To do this, two different QuEChERS-based methods for veterinary drugs and pesticides and PCBs were modified and merged into a single mega-method dubbed “QuEChERSER” (more than QuEChERS), which is presented here for the first time. The mega-method was validated in catfish at four different spiking levels with 10 replicates per level. Sample extraction of 2 g test portions was made with 10 mL of 4:1 (v/v) acetonitrile/water, and then an aliquot was taken for ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) analysis of 106 veterinary drugs and 125 pesticides, including metabolites. The remaining extract after salting out was subjected to automated mini-solid-phase extraction cleanup (Instrument Top Sample Preparation) for immediate injection in low-pressure gas chromatography–tandem mass spectrometry (LPGC–MS/MS). The cleanup was conducted in parallel with the 10 min LPGC–MS/MS analysis for 167 PCBs, pesticides, and metabolites, which was conducted in parallel with the 10 min UHPLC–MS/MS analysis for 231 analytes to increase sample throughput (49 analytes were included in both techniques). In MS/MS, three ion transitions were monitored for nearly all targeted analytes to provide unambiguous identification as well as quantification. Satisfactory recoveries (70–120%) and relative standard deviations of ≤20% were achieved for 98 (92%) of the veterinary drugs and their metabolites and for 222 (91%) of pesticides, metabolites, and PCBs, demonstrating that the developed method is applicable for the analysis of these contaminants in fish as part of regulatory monitoring programs and other purposes. Description: The goal of this study was to develop and validate a new method for simultaneous determination of 106 veterinary drugs and 227 pesticides and their metabolites plus 16 polychlorinated biphenyls (PCBs) at and below their regulatory levels established for catfish muscle in the European Union and U.S.A. To do this, two different QuEChERS-based methods for veterinary drugs and pesticides and PCBs were modified and merged into a single mega-method dubbed “QuEChERSER” (more than QuEChERS), which is presented here for the first time. The mega-method was validated in catfish at four different spiking levels with 10 replicates per level. Sample extraction of 2 g test portions was made with 10 mL of 4:1 (v/v) acetonitrile/water, and then an aliquot was taken for ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) analysis of 106 veterinary drugs and 125 pesticides, including metabolites. The remaining extract after salting out was subjected to automated mini-solid-phase extraction cleanup (Instrument Top Sample Preparation) for immediate injection in low-pressure gas chromatography–tandem mass spectrometry (LPGC–MS/MS). The cleanup was conducted in parallel with the 10 min LPGC–MS/MS analysis for 167 PCBs, pesticides, and metabolites, which was conducted in parallel with the 10 min UHPLC–MS/MS analysis for 231 analytes to increase sample throughput (49 analytes were included in both techniques). In MS/MS, three ion transitions were monitored for nearly all targeted analytes to provide unambiguous identification as well as quantification. Satisfactory recoveries (70–120%) and relative standard deviations of ≤20% were achieved for 98 (92%) of the veterinary drugs and their metabolites and for 222 (91%) of pesticides, metabolites, and PCBs, demonstrating that the developed method is applicable for the analysis of these contaminants in fish as part of regulatory monitoring programs and other purposes. 2020-05-01T00:00:00Z http://repositoriobiologico.com.br//jspui/handle/123456789/1316 Title: Diagnosis of Neospora caninum in bovine fetuses by histology, immunohistochemistry, and nested-PCR Authors: Cabral, Aline Diniz; Camargo, Clarice Neves; Galleti, Nara Thiers Cacciatori; Okuda, Liria Hiromi; Pituco, Edviges Maristela; Del Fava, Claudia Abstract: Neospora caninum, a cause of abortion and stillbirth in cattle, was studied by histology, immunohistochemistry, and nested-PCR, using primers from the Nc5 region of the genomic DNA (PCR PLUS) and primers from the ITS1 region of the ribosomal DNA (PCR JB). A total of 105 fetal samples sent to the Centro de Pesquisa e Desenvolvimento de Sanidade Animal do Instituto Biológico from January 2006 to May 2008 were examined for evidence of N. caninum. Histological examination revealed 71.4% with non-suppurative inflammation in the heart, lung, liver, kidney, placenta, and brain. Immunohistochemistry detected infections in 8.6% of the samples, mainly in the brain, placenta, and heart. Nested-PCR JB revealed 6.7% with infections, while nested-PCR PLUS returned 20.9% positive results, mainly in brain and placenta, and in the pooled liver and heart. Kappa statistics demonstrated little agreement among the three techniques. The three methods are complementary, since they have distinct diagnostic characteristics and were combined to give a positivity rate of 24.8%. Description: Neospora caninum is a protozoan belonging to the phylum Apicomplexa. It was first detected in dogs in Norway (BJERKÅS; MOHN; PRESTHUS, 1984), and was described and named in 1988 by Dubey et al. Studies by McAllister et al. (1998) showed that the domestic dog is a definitive host, as is the coyote (Canis latrans) (GONDIM et al., 2004a). It was subsequently identified as a causal agent of abortion and stillbirth in cattle (THILSTEAD; DUBEY, 1989), and later studies demonstrated its worldwide economic impact (DUBEY; LINDSAY, 1996; ANDERSON et al., 1991). 2009-01-01T00:00:00Z