14 research outputs found

    A new species, new synonymy, and notes on Paravelia Breddin (Hemiptera: Heteroptera: Veliidae)

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    The broad-shouldered water strider Paravelia cunhai sp. nov. is described and illustrated based on material from the state of Pará, northern Brazil. The new species can be distinguished from all other species in this genus mainly by the dark color of the head and pronotum, absence of pruinosity or silvery pubescence on the anterior lobe of pronotum, maculae pattern on the fore wings, hind femur with row of 22 spines on mesal margin, and general shape of the paramere. This new species was collected in a pool inside a cave without incident light, a habitat recorded for the genus only recently, which reinforces the hypothesis that some species of Paravelia have troglophilic habits. In addition, a photograph of the dorsal habitus and notes concerning P. juruana Polhemus & Polhemus are provided, and P. cupariana Polhemus & Polhemus syn. nov. is proposed as a junior synonym of P. spinifera Polhemus & Polhemus

    New records of Gerromorpha (Insecta: Hemiptera: Heteroptera) from Brazil

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    New records are presented for twenty-four species of Gerromorpha belonging to Gerridae (Brachymetra furva, B. lata, Cylindrostethus palmaris, Halobatopsis platensis, Limnogonus aduncus aduncus, L. ignotus, L. profugus, L. recurvus, Ovatametra minima, O. obesa, Tachygerris adamsoni and Neogerris lubricus), Mesoveliidae (Mesovelia zeteki and Mesoveloidea williamsi) and Veliidae (Microvelia longipes, Oiovelia brasiliensis, O. cunucunumana, Paravelia bullialata, P. capixaba, Platyvelia brachialis, Rhagovelia tenuipes, Stridulivelia astralis, S. quadrispinosa and S. tersa). These new records are distributed among the four administrate regions of Brazil, and the known geographical distribution of these species in the country is presented. © 2012 Check List and Authors

    FALÊNCIA HEPÁTICA AGUDA INDUZIDA POR PARACETAMOL: FISIOPATOLOGIA, DIAGNÓSTICO E MANEJO CLÍNICO

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    Introduction: Paracetamol, known as acetaminophen, is a non-steroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase-3 (COX-3). Its antipyretic and analgesic actions, combined with low cost and safety, make it widely used, even without a medical prescription. However, due to hepatic metabolism and its high hepatotoxic potential at elevated doses or in the presence of hepatic comorbidities, paracetamol is the leading cause of drug-induced acute liver injury worldwide. This study aims to discuss the pathophysiology, diagnosis, and clinical management of paracetamol-induced acute liver failure. Methodology: A search was conducted in the electronic databases PubMed, Scielo, and LILACS using the descriptors "Acetaminophen," "Overdose," "Treatment," and "Acetylcysteine." Fifteen relevant articles were selected after applying inclusion and exclusion criteria. Results and Discussion: Paracetamol is metabolized in the liver, producing inactive metabolites excreted in the urine. However, a small fraction is metabolized to N-acetyl-p-benzoquinone imine (NAPQI), a highly hepatotoxic compound that causes cell necrosis by covalently binding to hepatic proteins. NAPQI is neutralized by glutathione (GSH), forming an inert compound excreted in the urine. Symptoms of paracetamol intoxication range from mild (nausea, vomiting, abdominal discomfort) to severe (jaundice, hepatic encephalopathy, coagulopathy) and occur in four phases. Rapid identification of the condition, assessment of the ingested dose, and time since ingestion are crucial. Conclusion: Effective management requires rapid identification, accurate assessment of the ingested dose, monitoring of hepatic markers, and early administration of NAC. Timely interventions are essential to prevent fatal complications and ensure patient recovery.Introdução: O paracetamol, conhecido como acetaminofeno, é um medicamento anti-inflamatório não esteroidal (AINE) que inibe a ciclooxigenase-3 (COX-3. Sua ação antipirética e analgésica, combinada com baixo custo e segurança, torna-o amplamente utilizado, mesmo sem prescrição médica. No entanto, devido à metabolização hepática e seu alto potencial hepatotóxico em doses elevadas ou em presença de comorbidades hepáticas, o paracetamol é a principal causa de lesão hepática aguda induzida por drogas no mundo. Este estudo visa discutir a fisiopatologia, diagnóstico e manejo clínico da falência hepática aguda induzida por paracetamol. Metodologia: Realizou-se pesquisa nas bases de dados eletrônicas PubMed, Scielo e LILACS com os descritores “Acetaminophen”, “Overdose”, “Treatment” e “Acetylcysteine”. Foram selecionados 15 artigos relevantes após aplicação de critérios de inclusão e exclusão. Resultados e Discussão: O paracetamol é metabolizado no fígado, produzindo metabólitos inativos excretados pela urina. Porém, uma pequena fração é metabolizada e gera N-acetil-p-benzoquinona imina (NAPQI), um composto altamente hepatotóxico que causa necrose celular ao se ligar covalentemente às proteínas hepáticas. NAPQI é neutralizado pela glutationa (GSH), formando um composto inerte excretado pela urina. Os sintomas de intoxicação por paracetamol variam de leves (náuseas, vômitos, desconforto abdominal) a graves (icterícia, encefalopatia hepática, coagulopatia) e ocorrem em quatro fases. A rápida identificação da condição, avaliação da dose ingerida e o tempo desde a ingestão são cruciais. Conclusão: O manejo eficaz requer identificação rápida, avaliação precisa da dose ingerida, monitoramento de marcadores hepáticos, e administração precoce de NAC. Intervenções oportunas são essenciais para prevenir complicações fatais e garantir a recuperação do paciente

    Catálogo Taxonômico da Fauna do Brasil: setting the baseline knowledge on the animal diversity in Brazil

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    The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others

    Taxonomic revision phylogenetic analysis of the subfamily Limnocorinae (Heteroptera: Nepomorpha: Naucoridae)

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    A subfamília Limnocorinae (Naucoridae) possui quatro gêneros nominais na literatura, entretanto, apenas Limnocoris Stål, 1860 é considerado válido. O presente estudo revisa taxonomicamente as espécies do gênero, bem como a relação filogenética entre elas. Todas as espécies ocorrem na região Neotropical, registradas do sul do Estado de Nevada, nos Estados Unidos, até a região central da Argentina. Historicamente, Limnocoris é um grupo pouco estudado, com trabalhos que concentram basicamente em descrições de espécies, muitas delas, publicadas em estudos isolados, sem muito detalhe. Além disso, é digno de nota mencionar que até o presente momento nenhum estudo que se objetivou classificar grupos de espécies ou mesmo a relação de gêneros dentro das subfamílias utilizando análise filogenética foi realizado até o momento. Através de revisão taxonômica, buscou-se reconhecer os táxons pertencentes ao gênero, bem como suas variações intraespecíficas. A revisão teve ênfase na localização do material-tipo e espécimes adicionais, sempre que possível. Todas as espécies estudadas foram fotografadas e examinadas com o intuito de padronizar o estudo morfológico externo do gênero. Após o estudo dos espécimes-tipo, foi possível propor 15 sinonímias novas, sinônimos juniores entre colchetes: Limnocoris dubiosus Montandon [L. aymarana Poisson]; L. espinolai Nieser & Lopez-Ruf [L. porphyros Nieser & Lopez- Ruf]; L. insularis Champion [L. alcorni La Rivers]; L. malkini La Rivers [L. pulchellus La Rivers]; L. menkei La Rivers [L. birabeni De Carlo]; L. ochraceus Montandon [L. maculatus De Carlo]; L. pallescens (Stål) [L. bergrothi Montandon]; L. pauper Montandon [L. nigropunctatus Montandon]; L. pauper Montandon [L. nigropunctatus Montandon]; L. pectoralis Montandon [L. rivalis Melin]; L. pygmaeus La Rivers [L. solenoides La Rivers]; L. signoreti Montandon [L. brailovskyi La Rivers, L. laucki La Rivers e L. stangei La Rivers]; L. stali Montandon [L. carcharus La Rivers e L. robustus Roback & Nieser]. Além disso, três espécies são revalidadas: L. montandoni La Rivers, L. sattleri De Carlo e L. stali; L. surinamensis stat. nov. é elavada ao status de espécies, e outras 13 espécies novas são propostas. Lectótipos são designados para L. aymarana, L. bergrothi, L. dubiosus e L. signoreti. Com o objetivo de propor uma hipótese de relação de parentesco entre as espécies de Limnocoris, foi elaborada uma matriz de 82 caracteres morfológicos, tendo como método de estudo a máxima parcimônia. A análise utilizando pesagem implícita resultou em 1 árvore mais parcimoniosa; oito sinapomorfias suportam a monofilia do gênero Limnocoris, que se mostrou dividir-se em dois grandes clados separados principalmente pela pubescência da região ventral do corpo. A distribuição geográfica de grande parte das espécies é incrementada com a inclusão de novos registros e, com intuito de facilitar a identificação, mapas de distribuição e uma chave ilustrada é proposta para as espécies estudadas.The subfamily Limnocorinae (Naucoridae) contains four nominal genera in the literature, however, only Limnocoris Stål, 1860 is considered valid. The present study reviews taxonomically the species of the genus, as well as proposes a phylogenetic hypothesis of relation between them. All species occur in the Neotropical region, from southern Nevada in the United States, to central Argentina. Historically, Limnocoris is a poorly studied group, with works concentrate mainly on descriptions of species, many of them, published in isolated studies, without much detail. In addition, up to the present time no study that has aimed to classify groups of species or even the relationship of genera within the subfamilies using phylogenetic analysis has not been performed so far. Through a taxonomic revision, it was sought to recognize the taxa belonging to the genus, as well as their intraspecific variations. The revision has emphasized in the location of the type-material and additional specimens, whenever possible. All species studied were photographed and examined in order to standardize the external morphological study of the genus. After the study of the type specimens, it was possible to propose 15 new synonymies, junior synonyms between brackets: Limnocoris dubiosus Montandon [L. aymarana Poisson]; L. espinolai Nieser & Lopez-Ruf [L. porphyros Nieser & Lopez-Ruf]; L. insularis Champion [L. alcorni La Rivers]; L. malkini La Rivers [L. pulchellus La Rivers]; L. menkei La Rivers [L. birabeni De Carlo]; L. ochraceus Montandon [L. maculatus De Carlo]; L. pallescens (Stål) [L. bergrothi Montandon]; L. pauper Montandon [L. nigropunctatus Montandon]; L. pauper Montandon [L. nigropunctatus Montandon]; L. pectoralis Montandon [L. rivalis Melin]; L. pygmaeus La Rivers [L. solenoides La Rivers]; L. signoreti Montandon [L. brailovskyi La Rivers, L. laucki La Rivers e L. stangei La Rivers]; L. stali Montandon [L. carcharus La Rivers e L. robustus Roback & Nieser]. In addition, three species are revalidated: L. montandoni La Rivers, L. sattleri De Carlo and L. stali; L. surinamensis stat. nov. is elevated to species status and another 13 new species are proposed. Lectotypes are designated for L. aymarana, L. bergrothi, L. dubiosus e L. signoreti. With the aim of proposing a hypothesis of relationship among the species of Limnocoris, a matrix of 82 morphological characters was elaborated, having as method the maximum parsimony. The analysis under implicit weighing resulted in 1 more parsimonious tree; eight synapomorphies support the monophyly of the genus, which has been shown to divide into two clades separated mainly by the pubescence of the ventral region of the body. The geographic distribution of almost all species is increased with the inclusion of new records and, in order to facilitate identification, distribution maps and an identification key are proposed for the studied species

    Estudo taxonômico dos gêneros Oiovelia Drake & Maldonado-Capriles, 1952 e Paravelia Breddin, 1898 (Hemiptera: Heteroptera: Gerromorpha: Veliidae)

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    The Neotropical genera Oiovelia Drake & Maldonado-Capriles, 1952 and Paravelia Breddin, 1898 (Hemiptera: Heteroptera: Veliidae) were studied taxonomically. The first was revised, the known species were redescribed with characters not mentioned in the original description, and four new species were described and illustrated, all of them to Brazil, totaling eight species in the genus. Oiovelia rivicola Spangler was recorded for the first time in Brazil (Amazonas and Amapá), besides expanding the occurrence area for the other described species. In Paravelia, eight new species were described and illustrated through material from seven Brazilian States (Amapá, Amazonas, Maranhão, Bahia, Mato Grosso, Mato Grosso do Sul and Minas Gerais), totaling 55 valid species in the genus. Color photographs of dorsal aspect were obtained for the following species: P. basalis (Spinola), P. biae Spangler, P. boliviana Breddin, P. bullialata Polhemus & Polhemus, P. capillata Drake & Harris, P. capixaba Moreira, Nessimian & Rúdio, P. conata (Hungerford), P. dilatata Polhemus & Polhemus, P. foveata Polhemus & Polhemus, P. itatiayana Drake, P. lanemeloi Moreira & Barbosa, P. manausana Polhemus & Polhemus, P. nieseri Moreira & Barbosa, P. platensis (Berg), P. recens (Drake & Harris), P. rotundanotata (Hungerford), P. spinifera Polhemus & Polhemus, P. splendoris (Drake & Harris) and P. williamsi (Hungerford). Three of these species are recorded for the first time in Brazil: P. plantesis, P. spinifera and P. williamsi. Moreover, the macropterous form of P. capixaba and P. dilatata are described. Finally, in order to summarize the information for species in both genera, a catalog including geographic records, synonymic list, diagnosis, and comments, are presented separately for each genus.Os gêneros neotropicais Oiovelia Drake & Maldonado Capriles, 1952 e Paravelia Breddin, 1898 (Hemiptera: Heteroptera: Veliidae) foram estudados taxonomicamente. O primeiro gênero foi revisado, as espécies conhecidas foram redescritas acrescentando caracteres não mencionados na descrição original, e quatro espécies novas para o Brasil foram descobertas e ilustradas, totalizando 8 espécies. Oiovelia rivicola Spangler foi registrada pela primeira vez no Brasil (Amazonas e Amapá), além de ampliar a área de ocorrência para as demais espécies descritas. Em Paravelia, oito novas espécies foram descritas e ilustradas através do material proveniente de sete Estados brasileiros (Amapá, Amazonas, Maranhão, Bahia, Mato Grosso, Mato Grosso do Sul e Minas Gerais), totalizando 55 espécies válidas para o gênero. Fotografias coloridas do aspecto dorsal foram obtidas para as seguintes espécies: P. basalis (Spinola), P. biae Spangler, P. boliviana Breddin, P. bullialata Polhemus & Polhemus, P. capillata Drake & Harris, P. capixaba Moreira, Nessimian & Rúdio, P. conata (Hungerford), P. dilatata Polhemus & Polhemus, P. foveata Polhemus & Polhemus, P. itatiayana Drake, P. lanemeloi Moreira & Barbosa, P. manausana Polhemus & Polhemus, P. nieseri Moreira & Barbosa, P. platensis (Berg), P. recens (Drake & Harris), P. rotundanotata (Hungerford), P. spinifera Polhemus & Polhemus, P. splendoris (Drake & Harris) e P. williamsi (Hungerford). Três dessas espécies são registradas pela primeira vez no Brasil: P. platensis, P. spinifera e P. williamsi. É apresentada uma chave de identificação para as espécies de Paravelia registradas no Brasil, além da descrição das formas macrópteras de P. capixaba e P. dilatata. Mapas de distribuição foram elaborados para as espécies de Oiovelia e para as novas espécies de Paravelia. Por fim, com o objetivo de reunir as informações para as espécies em ambos os gêneros estudados, os registros geográficos, lista sinonímica, diagnoses e comentários para todas as espécies foram incluídos separadamente para cada gênero

    A new species of Martarega White, 1879, with new distributional records of Notonectidae (Hemiptera: Heteroptera: Nepomorpha) from Brazil

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    A new species of the genus Martarega White, 1879 is described based on brachypterous and macropterous specimens, collected in three regions of Brazil [North (State of Pará), Central-West (State of Goiás), and Southeast (State of Minas Gerais)]. The new species, Martarega nessimiani sp. nov., is very similar to M. brasiliensis Truxal, 1949. These species are differentiated by the rounded shape of the patch of thin setae on the male mesotrochanter, and the angular shape of the hemelytral process stripe of the female hemelytra in the new species, whereas M. brasiliensis has the patch of thin setae with an irregular shape and the hemelytral process stripe almost straight. Illustrations of both species are presented. In addition, we give new distributional records of another 11 species of Notonectidae in Brazil: Martarega membranacea White, M. chinai Hynes, M. bentoi Truxal, M. brasiliensis, M. gonostyla Truxal, M. nieseri Moreira Ribeiro & Nessimian, Buenoa amnigenus (White), B. konta Nieser & Pelli, B. salutis Kirkaldy, B. truxali Nieser, and Notonecta pulchra Hungerford. Copyrigth © 2013 Magnolia Press

    Paravelia Breddin 1898

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    Genus <i>Paravelia</i> Breddin, 1898 <p> <i>Diagnosis:</i> Species of this genus can be differentiated from other Neotropical genera of Veliinae mainly by the (1) absence of lateral tubercles on the mesoacetabulum and metasternum, (2) tarsomere II of the middle leg usually 4-5 times longer than tarsomere I, (3) pretarsus of the middle and hind legs with setaeshaped arolia and two falcate claws, and (4) macropterous form usually with two maculae on each fore wing, with one basal and the other apical (Andersen 1982; Rodrigues <i>et al.,</i> 2014a).</p>Published as part of <i>Rodrigues, Higor Daniel Duarte & Moreira, Felipe Ferraz Figueiredo, 2016, A new species, new synonymy, and notes on Paravelia Breddin (Hemiptera: Heteroptera: Veliidae), pp. 183-188 in Papéis Avulsos de Zoologia (São Paulo) (São Paulo) 56 (17)</i> on page 184, DOI: 10.11606/0031-1049.2016.56.17, <a href="http://zenodo.org/record/4656550">http://zenodo.org/record/4656550</a&gt

    Catalog of type specimens of invertebrates in the collection of the Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil. VI. Hexapoda: Hemiptera: Heteroptera

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    A catalog of type specimens of Heteroptera (Insecta: Hemiptera) deposited in the Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus, Brazil, is presented and updated to May, 2012. A total of 37 holotypes and 61 lots of paratypes of 78 species are listed in their families: Miridae and Reduviidae (infraorder: Cimicomorpha); Mesoveliidae and Veliidae (Gerromorpha); Belostomatidae, Naucoridae, and Notonectidae (Nepomorpha); and Coreidae, Geocoridae [the older sense of "Lygaeidae"], and Pentatomidae (Pentatomomorpha). The taxa are presented alphabetically by infraorders, families, and genera, followed by epithet, bibliographic citation, type category, collection number, method of preservation, and present data on the labels. When necessary, we added localities data, and changes in taxonomic status of some species. Copyright © 2013 Magnolia Press

    Redescription of Ambrysus montandoni La Rivers, 1963 (Hemiptera: Heteroptera: Naucoridae), with the first records for Brazil

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    The naucorid Ambrysus montandoni La Rivers is known from males collected from southern Venezuela. Presented here are a redescription of the male, original description of the female, illustrations of both sexes and genitalia, and the first records of the species from Brazil. Subgeneric associations in Ambrysus are discussed. Copyright © 2012 · Magnolia Press
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