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Mites of the family Pyemotidae are reported as ectoparasites of a large number of arthropods He et al., 2019; Sousa et al., 2020; Chen et al. 2021), mainly insects of the orders Lepidoptera (Cunha et al., 2006; Oliveira et al., 2007; He et al. 2012, 2014; Liu et al, 2020; Tian et al. 2020), Hemiptera (Han, 2016; Li et al. 2019; Yu et al. 2019), and Coleoptera (Cunha et al. 2006; Guo et al. 2009; Oliveira et al., 2010). Pyemotes spp., also known as ?straw itch mites?, are of particular interest in applied acarology, both for their behavior as insect parasites and for their medical importance (Tomczyk-Socha et al. 2017; He et al., 2019). Adult females of this mite attach themselves to the host to feed, undergoing physogastry, the expansion of the posterior portion of their body (opisthosoma) to facilitate offspring development (Cunha et al. 2006). According to Tomalski et al. (1988), approximately 200 to 350 sexually mature mites are produced per female. Males are the first to be born, as adults, immediately copulating with their adult sisters. The newborn females immediately seek new hosts, which once parasitized, become paralyzed by the release of toxins (Sousa et al., 2020). Neurotoxins from a single female are sufficient to paralyze an insect host up to 150,000 times the size of the mite (Mullen and Oconnor, 2019). Studies on the potential of Pyemotes zhonghuajia as a biological control agent for eggs, larvae and pupae of the fall armyworm Spodoptera frugiperda (Smith) (Lepidoptera: Noctuidae) and the oriental armyworm Mythimna separata (Walker) (Lepidoptera: Noctuidae) demonstrated that a female is capable of killing more than 50% of first to third instar larvae of S. frugiperda and M. separata within 72 h under laboratory conditions (Liu et al., 2020; Tian et al., 2020). Made available in DSpace on 2022-09-26T15:05:34Z (GMT). No. of bitstreams: 1 A-QUATERLY-JOURNAL-ACAROLOGY-10.pdf: 951941 bytes, checksum: 919daf06fdbcd1810120aeaea2bf618a (MD5) Previous issue date: 2022

Emphasis has been given in the Brazilian state of Mato Grosso to the implementation of more sustainable production practices, including what has been termed agrosilvopastoral production system (ASPS), which involves the integration of different types of land use in a same area along time, seeking increased ecological stability. The Gamasina mite group (order Mesostigmata) is usually diverse and abundant in non-cultivated soils, where they can prey on arthropods and nematodes; some are commercialized for biological pest control. The objective of this study was to evaluate the diversity and abundance of edaphic Gamasina in plots of grain production managed under conventional (alternating cultivation) system and under ASPS, both with the adoption of no-tillage cultivation, in the municipality of Sinop, Mato Grosso state. In samples of soil and litter taken biweekly from August 2015 to May 2016, 762 Gamasina representing 32 species of 21 genera and nine families were collected. Considering both systems together, the dominant Gamasina were quite different from those of other parts of Brazil. Calculated ecological indexes showed no major differences between the two systems, possibly because of the relatively short time since the implementation of ASPS. In both systems, Rhodacaridae was one of the dominant families (37.5% of the Gamasina), followed by Macrochelidae (20.9%) and Laelapidae (18.8%). The most abundant species were Multidentirhodacarus squamosus Karg (Rhodacaridae), a new species of Holostaspella (Macrochelidae) and Cosmolaelaps barbatus Moreira, Klompen and Moraes (Laelapidae). Future studies are warranted, allowing more time for the adoption of ASPS to produce possible ecological changes. Made available in DSpace on 2022-01-28T01:56:17Z (GMT). No. of bitstreams: 1 2021-cpamt-rmp-gamasina-mite-communities-grain-production-systems-southwestern-brazilian-amazon.pdf: 831669 bytes, checksum: 97b4ac91871a8fbb009b5b4a981ddaa5 (MD5) Previous issue date: 2021

Este trabalho tem por objetivo tecer reflexões sobre o ensino de engenharia mecatrônica, considerando o aprendizado dos alunos diante dos desafios do compreender os fenômenos da disciplina de acionamentos elétricos por meio de experimentos desenvolvidos por meio de simulações via software e montagens em bancadas. O estudo busca apreender a visão do aluno diante destas duas possibilidades didáticas e tecer considerações para uma a oferta atual de laboratórios virtuais.