59 research outputs found

    Revision of Brasilibathynellocaris Jakobi, 1972 (Copepoda: Harpacticoida: Parastenocarididae) with redefinition of the genus

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    Members of the genus Brasilibathynellocaris Jakobi, 1972 are typical neotropical Parastenocarididae. Their geographical distribution ranges from Central America to southern Brazil, with species occurring on both sides of the Andes mountain chain. The genus can be characterized and easily identified by the following characters: leg 4 with two strong spinules on anterior margin of coxa; exopod 1 (exp-1) short and with a proximal invagination on inner corner; leg 3 with exopod inwardly curved, ending in a long forceps formed by apophysis and thumb (both with a hyaline margin). In the present work we favour revalidation of Brasilibathynellocaris, arguing for its monophyly. Pararemaneicaris Jakobi, 1972 and Paraforficatocaris Jakobi, 1972 are new junior synonyms of Brasilibathynellocaris, as a result of transfer of their respective type species: Brasilibathynellocaris cuscatlanensis (Noodt, 1962) comb. nov., and Brasilibathynellocaris paranaensis (Jakobi, 1972) comb. nov. Two monophyletic species groups, together constituting Brasilibathynellocaris, are newly proposed and diagnosed: the Brasilibathynellocaris brasilibathynellae group and the Brasilibathynellocaris salvadorensis group. Neotypes are designated for B. brasilibathynellae and B. paranaensis. comb. n ov. Redescriptions are provided for all known species of Brasilibathynellocaris. © 2010 The Linnean Society of London

    Latin American interventions in children and adolescents’ sedentary behavior: a systematic review

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    OBJECTIVE: To identify and evaluate the effects of community-based interventions on the sedentary behavior (SB) of Latin American children and adolescents. METHODS: A systematic review on community-based trials to reduce and/or control SB in Latin American countries (Prospero: CRD42017072157). Five databases (PubMed, Web of Science, Scopus, SciELO and Lilacs) and a reference lists were searched. RESULTS: Ten intervention studies met the eligibility criteria and composed the descriptive synthesis. These studies were conducted in Brazil (n=5), Mexico (n=3), Ecuador (n=1) and Colombia (n=1). Most interventions were implemented in schools (n=8) by educational components, such as meetings, lessons, and seminars, on health-related subjects (n=6). Only two studies adopted specific strategies to reduce/control SB; others focused on increasing physical activity and/or improving diet. Only one study used an accelerometer to measure SB. Seven studies investigated recreational screen time. Eight studies showed statistically significant effects on SB reduction (80%). CONCLUSIONS: Latin America community-based interventions reduced children and adolescents’ SB. Further studies should: define SB as a primary outcome and implement strategies to reduce such behaviour; focus in different SBs and settings, other than recreational screen time or at-home sitting time; and use objective tools together with questionnaires to measure sedentary behaviour in

    Intervenções educativas para atividade física em adultos brasileiros: revisão sistemática

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    OBJETIVO: Sumarizar as principais evidências de intervenções educativas delineadas para o aumento dos níveis de atividade física (AF) em adultos brasileiros. MÉTODOS: Revisão sistemática de estudos de intervenção conduzidos no Brasil, que implementaram componentes educativos com a finalidade de promover o aumento dos níveis de AF em populações de adultos (18 a 65 anos). Em outubro de 2020, buscas sistemáticas foram conduzidas em seis bases de dados e nas listas de referências dos artigos avaliados. RESULTADOS: Dos 2.511 artigos iniciais, nove compuseram a síntese. Foram observadas amostras com características específicas (como vulnerabilidade social, inatividade física e sobrepeso ou obesidade), com maior número de mulheres. Cinco intervenções (55,6%) ocorreram nos cenários da atenção primária à saúde (APS) do Sistema Único de Saúde (SUS). Apenas em quatro estudos (44,4%) houve descrição dos referenciais pedagógicos estruturantes das abordagens educativas, dentro os quais o aconselhamento se configurou como a estratégia mais utilizada, como aquelas realizadas por meio de encontros presenciais, visitas domiciliares, palestras e chamadas telefônicas (n = 8; 88,9%). Resultados positivos foram observados em três distintos indicadores: aumento do volume semanal de AF (n = 4); aumento do índice de AF no lazer (n = 1); e aumento da proporção de mulheres classificadas como “muito ativas/ativas” (n = 1). Visto as especificidades amostrais, o domínio “seleção dos participantes” apresentou elevado número de intervenções com alto risco de viés. CONCLUSÕES: As abordagens educativas produziram alguns efeitos positivos em distintos indicadores de AF, destacando-se o aconselhamento como principal estratégia utilizada e as abordagens que envolveram outras temáticas de saúde, como nutrição e estresse. Contudo, frente aos diversos determinantes da AF no Brasil, é importante que futuras intervenções sejam conduzidas em variadas localizações do país, de forma que avaliem, de maneira mais ampla, seus processos de implementação e articulação com os distintos profissionais que atuam na APS.OBJECTIVE: To summarize the main evidence from educational interventions designed to increase levels of physical activity (PA) among Brazilian adults. METHODS: Systematic review of intervention studies carried out in Brazil that implemented educational components aimed at promoting increased levels of PA among adult populations (18 to 65 years old). In October 2020, systematic searches were conducted in six databases, and in the reference lists of the assessed studies. RESULTS: Of the initial 2,511 studies, nine were included in the synthesis. Samples with specific characteristics (such as social vulnerability, physical inactivity, and overweight or obesity) were observed, with a greater number of women. Five interventions (55.6%) occurred in primary healthcare settings (PHC) of the Brazilian Unified Health System (SUS). Only four studies (44.4%) described the pedagogical frameworks structuring the educational approaches, among which counseling was the most used strategy, such as those carried out through face-to-face meetings, home visits, lectures, and phone calls (n = 8; 88.9%). Positive results were observed in three different indicators: increase in weekly PA volume (n = 4); increase in leisure-time PA rate (n = 1); and increase in the proportion of women classified as “very active/active” (n = 1). Given the sampling specificities, the domain “participant selection” showed a high number of interventions with high risk of bias. CONCLUSIONS: Educational approaches engendered some positive effects on different PA indicators, notably counseling as the main strategy used and approaches involving other health themes, such as nutrition and stress. However, considering the several determinants of PA in Brazil, future interventions should be conducted in different locations of Brazil in order to evaluate, in a broader way, their implementation processes and articulation with the many professionals working in PHC

    A new genus of Parastenocarididae (Copepoda, Harpacticoida) from the Tocantins River basin (Goiás, Brazil), and a phylogenetic analysis of the Parastenocaridinae

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    Eirinicaris antonioi gen. et sp. n. (Parastenocaridinae) is described from the Brazilian rocky savannas, an ecosystem under heavy anthropogenic pressure. The subfamily is distributed worldwide, with representatives in Africa, Asia, Australia, Europe, and North America. This is the first time a non-Remaneicaris Parastenocaridinae is described from a Neotropical region indicating that Parastenocaridinae species were already present in a vast geographical area, before the split of the Gondwana. The new taxon is included within the subfamily Parastenocaridinae based on the following characters: 1) segments 5, 6, and 7 of the male antennules forming a functional unit for clasping the female; 2) segment 7 with small process at the inner margin, forming an incipient "pocket-knife" structure with segment 6; 3) last segment pointing medially when closed; 4) the endopod of female leg 3 one-segmented and spiniform, without distal seta; 5) the apophysis and terminal seta of the exopod of male leg 3 are fused; 6) the genital field is rectangular and much broader than the height in the female; 7) the group of three lateral setae I, II, and III of the furca and the dorsal seta are situated at the same level in the female; and 8) the basis of leg 1 has an inner seta. The new taxon can be distinguished from all other Parastenocaridinae genera by the unique sexually dimorphic telson and furca. In the male, the dorsal seta is inserted at the midlength of the furca and setae I, II, and III are displaced anteroventrally. A phylogenetic analysis of the subfamily Parastenocaridinae is given based on the description of the type species of each genus and available descriptions of all Parastenocaridinae species. Eirinicaris gen. n. is the sister taxon of a clade formed by Kinnecaris and Monodicaris, sharing with them the long male and female leg 5 with a long spiniform process, and with Kinnecaris, a distal pore on the spiniform process. © Paulo H.C. Corgosinho et al

    Sistemática filogenética de Remaneicaris Jakobi (Copepoda, Harpacticoida, Parastenocarididae) da região neotropical

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    The genus Remaneicaris is the most speciose genus in the South America, being composed by 28 species, plus six new species described here. It is monophyletic and its position within the family Parastenocarididae is tested using the method of cladistic systematic. The genus turned out to be basal within the family and some remarks on the groundpattern of Parastenocarididae are given here. It can be easily characterized by the subdistal position of the outer spine of leg 4 exp 3 as well as due to other very plesiomorphic characters, such as the presence of two setae on the first endite of Mx2 and a unisegmented endopod on the leg 3 of males. A new subfamily is proposed here to accommodate the genus Remaneicaris, sharing with it the same diagnosis. Finally, a diagnosis for each of the monophyletic groups within Remaneicaris and a redescription of most of the species previously described are here given. A key for the identification of the species is also offered.O gênero Remaneicaris é o grupo mais diverso de parastenocaridídeos da América do Sul, sendo composto por 28 espécies, mais seis novas espécies descritas neste trabalho. O grupo é monofilético e resultou ser basal dentro da família, sendo sua posição filogenética testada pelo método da sistemática filogenética de Hennig. Com isto, são feitas algumas considerações a respeito do groudpattern (plano basal) dos Parastenocarididade. Os Remaneicaris podem ser facilmente caracterizados pela posição subdistal do espinho externo do exopodito 3 da pata 4, bem como por outros caracteres bem plesiomórficos, como a presença de duas cerdas no endito proximal da Mx2 e a presença de um endópodo unissegmentado na pata 3 dos machos. Uma nova subfamília é proposta aqui para acomodar o gênero Remaneicaris, compartilhando com este a mesma diagnose. Finalmente, é oferecida uma diagnose para cada um dos grupos monofiléticos dentro de Remaneicaris, sendo feita a redescrição de quase todas as espécies previamente descritas para o gênero. É fornecida também uma chave para a identificação das espécies

    A new species of Parameiropsis Becker, 1974 (Copepoda: Harpacticoida) from the Porcupine Seabight (North-East Atlantic)

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    A new species of Parameiropsis Becker, 1974 is described from the Porcupine Seabight and questions about the position of this genus within Harpacticoida are briefly addressed. The new species is the smallest representative of the genus and extends the depth and distribution range of Parameiropsis to 880 m and 51°25.9’N. Parameiropsis antennafortis sp. n. differs from the known species (viz. P. rapiens Becker, 1974, P. peruanus Becker, 1974 and P. magnus Itô, 1983) basically in total body size, shape of labrum, robustness of A2, armature of mouthparts and P1-P5, shape of P5 and shape of copulatory pore and tube. Additionally, the new species has the apical elements of P1 enp-3 transformed into a unipinnate spine, a spiniform outer terminal seta and a miniaturized inner terminal seta. This condition is not homologous to the Podogennonta pattern. Parameiropsis do not show any decisive character supporting the inclusion of this genus within Ameiridae and is considered here an incertae sedis taxon within Harpacticoida

    A new species of Pseudomoraria from an alpine spring of Picos de Europa, North of Spain

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    Pseudomoraria triglavensis was described by Brancelj (1994) from specimens collected in a high-alpine reservoir at the Triglav National Park (NW Slovenia) at an altitude of 1690 m a.s.l. During an expedition in the Picos de Europa National Park (N Spain) in 2018, a new species of Pseudomoraria was collected in an epikarst spring (Fuente Escondido), below the ice cave of Altaiz at an altitude of 2112 m a.s.l. The new species can be easily distinguished from Pseudomoraria triglavensis by the presence of an inner seta on the edopodite 1 of female and male pereopod 1; absence of the outer spine on the exopodite 2 of the third and fourth female pereopods; four, instead of five setae on the second endopodite of the fourth female pereopod; and the female furca lacks the ventral distal patch of spinules characteristic of P. triglavensis. In the male, the new species differs from its congeners by the position and shape of the apophysis of the second edopodite of the pereopod 3, which is positioned in the outer, instead of the inner margin, and is bent around the distal inner spine; the second exopodite of the pereopod 4 has spines/setae, lacking the innermost seta which is present in P. triglavensis. The female armature of the pereopod 5 is highly variable, with 4-6 setae/spines on the exopod and 4-6 setae on the baso-endopod. According to Brancelj (1994), P. triglavensis could not be included in any genus known at the time and concluded, based on the armature of the pereopod 5 of both sexes, that it would be most closely related to Moraria. We disagree with this author and propose a close relationship of this genus with the genus Hypocamptus Chappuis, 1929 sharing similar male pereopod segmentation and armature. In addition, the species belonging to both genera are a characteristic for the fauna of the alpine water bodies. It is not yet clear the phylogenetic relationship between the two genera, but evidences suggest that Pseudomoraria may be a junior synonym of Hypocamptus

    A new species of Psammonitocrella Huys, 2009 (Copepoda, Harpacticoida, Ameiridae) from California (USA), with a discussion of the relationship between Psammonitocrella and Parastenocarididae

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    The freshwater harpacticoid Psammonitocrella kumeyaayi sp. nov. from the Nearctic Region (California; USA) is proposed. The position of the genus within Harpacticoida and its relationship with the Parastenocarididae is discussed. The new species can be included within Psammonitocrella on account of a) the cylindrical furca, longer than the telson, b) the unmodified inner spine on the basis of the male first leg, c) loss of the outer spine on the second exopodal segment of the first leg, d) loss of the outer spine of the third exopodal segment of the second, third, and fourth legs, e) loss of the inner apical seta on the third exopodal segment of the second and third legs, f) transformation of the inner apical seta of the third exopodal segment of the fourth leg into a spine, and g) loss of the endopodite of the fourth leg. The new species differs remarkably from P. boultoni, and P. longifurcata in the loss of the outer spine of the second exopodal segment of the fourth leg, in the presence of a one-segmented fifth leg exopodite, and in the presence of an outer seta on the basis of the first and second legs. Both Psammonitocrella and the known species of Parastenocarididae have a one-segmented endopod on the fourth leg, and the endopods of the second and third legs are reduced to one or two segments. Psammonitocrella is currently allocated into the Ameiridae, and evidence suggesting a sister-group relationship with Parastenocarididae—both share the loss of the inner seta on the first endopodal segment of the first leg—indicates that the Parastenocarididae should be included into the Ameiridae. In an evolutionary context, Parastenocarididae could have evolved from a lineage of freshwater ameirids that became interstitial in continental waters and colonized aquifers and groundwaters

    A new species of Psammonitocrella Huys, 2009 (Copepoda, Harpacticoida, Ameiridae) from California (USA), with a discussion of the relationship between Psammonitocrella and Parastenocarididae

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    The freshwater harpacticoid Psammonitocrella kumeyaayi sp. nov. from the Nearctic Region (California; USA) is proposed. The position of the genus within Harpacticoida and its relationship with the Parastenocarididae is discussed. The new species can be included within Psammonitocrella on account of a) the cylindrical furca, longer than the telson, b) the unmodified inner spine on the basis of the male first leg, c) loss of the outer spine on the second exopodal segment of the first leg, d) loss of the outer spine of the third exopodal segment of the second, third, and fourth legs, e) loss of the inner apical seta on the third exopodal segment of the second and third legs, f) transformation of the inner apical seta of the third exopodal segment of the fourth leg into a spine, and g) loss of the endopodite of the fourth leg. The new species differs remarkably from P. boultoni, and P. longifurcata in the loss of the outer spine of the second exopodal segment of the fourth leg, in the presence of a one-segmented fifth leg exopodite, and in the presence of an outer seta on the basis of the first and second legs. Both Psammonitocrella and the known species of Parastenocarididae have a one-segmented endopod on the fourth leg, and the endopods of the second and third legs are reduced to one or two segments. Psammonitocrella is currently allocated into the Ameiridae, and evidence suggesting a sister-group relationship with Parastenocarididae—both share the loss of the inner seta on the first endopodal segment of the first leg—indicates that the Parastenocarididae should be included into the Ameiridae. In an evolutionary context, Parastenocarididae could have evolved from a lineage of freshwater ameirids that became interstitial in continental waters and colonized aquifers and groundwaters

    Two new interstitial species of Remaneicaris JAKOBI 1972 from the Ribeirão do Ouro River, Minas Gerais, Brazil, with a redefinition of the genus

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    Members of the copepod genus Remaneicaris JAKOBI 1972 are reported for the first time from the state of Minas Gerais, southeastern Brazil. Two new species were discovered in interstitial near-shore waters of the small river Ribeirão do Ouro (tributary of the Paraopeba River of the São Francisco hydrographic basin). Remaneicaris analuizae n. sp. and R. enniceae n. sp. are described in detail, and their phylogenetic relationships within the genus are discussed; holo-types ♂ ♂ in coll. INPA, Petrópolis (Manaus, Brazil). The species differ from each other by the shape of endopod of leg 2, shape of leg 3 exopod, armature of leg 5, ornamentation of the telson, and by the number of integumental windows and sensilla. The monophyletic status of the genus is discussed and an updated list of species provided. The geographical occurrence of the genus in South America is briefly reviewed
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