Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil

Studies on fecundity and embryo size have been frequently used to infer about the reproductive potential, embryogenesis, and the energy investment in embryo production in crustaceans. These parameters are relevant to the knowledge of life-history and diversity of reproductive strategies developed by this group. This study addressed the embryo production by the estuarine shrimp Salmoneus carvachoi Anker, 2007, a poorly known caridean shrimp. We investigated whether there was (1) a correlation between fecundity and carapace length, (2) an increase in embryo volume along the embryonic development, and (3) loss of embryos along development. In addition, we investigated whether the esternite length and height and width of the pleura of the second abdominal somite were good predictors of fecundity. A total of 53 embryo-carrying individuals were collected in December 2016 and February 2017 in a tidal mudflat from the estuary of the Paripe River, Ilha de Itamaracá, Pernambuco, Brazil. The carapace length ranged from 3.23 to 4.64 mm (3.78 ± 0.26 mm). Among those, 25 individuals had embryos in initial stage, 5 in intermediate stage and 15 in final stage. Fecundity ranged from 14 to 67 (33.65 ± 12.51 embryos) and was weakly correlated with carapace length. However, fecundity was strongly correlated with the width of the second sternite and width of the pleura of the second abdominal somite. Embryo volume increased markedly (93%) from the initial to the final stage of development. This increase might be due to water uptake to facilitate the membrane rupture at the onset of larvae hatching. There was significant loss of embryos only between the initial and intermediate stage. Future studies on the embryo production by other species of Salmoneus Holthuis, 1955 are necessary to understand and compare these aspects of reproductive biology

Fecundity, embryo size and embryo loss in the estuarine shrimp Salmoneus carvachoi Anker, 2007 (Crustacea: Alpheidae) from a tidal mudflat in northeastern Brazil

Studies on fecundity and embryo size have been frequently used to infer about the reproductive potential, embryogenesis, and the energy investment in embryo production in crustaceans. These parameters are relevant to the knowledge of life-history and diversity of reproductive strategies developed by this group. This study addressed the embryo production by the estuarine shrimp Salmoneus carvachoi Anker, 2007, a poorly known caridean shrimp. We investigated whether there was (1) a correlation between fecundity and carapace length, (2) an increase in embryo volume along the embryonic development, and (3) loss of embryos along development. In addition, we investigated whether the esternite length and height and width of the pleura of the second abdominal somite were good predictors of fecundity. A total of 53 embryo-carrying individuals were collected in December 2016 and February 2017 in a tidal mudflat from the estuary of the Paripe River, Ilha de Itamaracá, Pernambuco, Brazil. The carapace length ranged from 3.23 to 4.64 mm (3.78 ± 0.26 mm). Among those, 25 individuals had embryos in initial stage, 5 in intermediate stage and 15 in final stage. Fecundity ranged from 14 to 67 (33.65 ± 12.51 embryos) and was weakly correlated with carapace length. However, fecundity was strongly correlated with the width of the second sternite and width of the pleura of the second abdominal somite. Embryo volume increased markedly (93%) from the initial to the final stage of development. This increase might be due to water uptake to facilitate the membrane rupture at the onset of larvae hatching. There was significant loss of embryos only between the initial and intermediate stage. Future studies on the embryo production by other species of Salmoneus Holthuis, 1955 are necessary to understand and compare these aspects of reproductive biology

ENFERMAGEM DO TRABALHO EM PORTUGAL: CONTEXTO E PERSPETIVAS

Objetivo: conhecer a perceção dos enfermeiros do trabalho no que respeita às áreas deconhecimento e intervenção. Método: estudo quantitativo, descritivo e transversal. Envolveuamostra de 472 enfermeiros do trabalho. Utilizou-se como instrumento de recolha de dados, que decorreu entre maio e setembro de 2017, questionário, alicerçado nas áreas nucleares de conhecimentos e competências do enfermeiro do trabalho e na escala de perceção das áreas de conhecimento e intervenção do enfermeiro do trabalho. Resultados: a Enfermagem do Trabalho foi entendida pela maioria como atividade profissional transitória, pelo facto de ser exercida como complemento financeiro à atividade principal ou porque não conseguiram colocação na área de exercício profissional da sua preferência. Conclusão: o exercício profissional nas áreas de conhecimento e intervenção foi desvalorizado ou não reconhecido e encarado pela maioria dos enfermeiros como transitório, pelo facto de quase metade ambicionar trabalhar no futuro nessa área, mas apenas em regime de tempo parcial. Descritores: Enfermagem do Trabalho. Perceção. Educação Continuada. Assistência Integral àSaúde. Desenvolvimento de Programas

Chemical control of adult sourgrass in coffee crops, through various associations

Weed management in coffee plants is carried out largely through the adoption of chemical control, with the use of herbicides. In this context, one of the species that most affects the development of coffee plants, and due to its difficulty in control, is sourgrass. Above all, most sourgrass biotypes are not efficiently controlled with the herbicide glyphosate, which is the most used in coffee growing. Thus, the search for strategies that can minimize the damage caused by this weed, appears with increasing demand, due to the great damage to coffee plants. Therefore, the objective of this study was to evaluate the chemical control of adult sourgrass in coffee plants, through several associations. Treatment control efficiency was visually evaluated, where a scale ranging from 0 to 100 was used, with 0 corresponding to the absence of symptoms and 100 corresponding to the total control of weed plants by the action of herbicides, respectively. This evaluation method was used at 7, 14, 21, 28, 35 and 42 days after application. The data obtained were subjected to analysis of variance using the SISVAR statistical software. The association of the herbicides Fluazifop-p-butyl and Clethodim, implies greater efficiency in controlling sourgrass over time. The association of the herbicide ammonium glufosinate with systemic herbicides implies a reduction in the control capacity of sourgrass plants over time.Weed management in coffee plants is carried out largely through the adoption of chemical control, with the use of herbicides. In this context, one of the species that most affects the development of coffee plants, and due to its difficulty in control, is sourgrass. Above all, most sourgrass biotypes are not efficiently controlled with the herbicide glyphosate, which is the most used in coffee growing. Thus, the search for strategies that can minimize the damage caused by this weed, appears with increasing demand, due to the great damage to coffee plants. Therefore, the objective of this study was to evaluate the chemical control of adult sourgrass in coffee plants, through several associations. Treatment control efficiency was visually evaluated, where a scale ranging from 0 to 100 was used, with 0 corresponding to the absence of symptoms and 100 corresponding to the total control of weed plants by the action of herbicides, respectively. This evaluation method was used at 7, 14, 21, 28, 35 and 42 days after application. The mixture of the herbicides Fluazifop-p-butyl and Clethodim is more efficient in controlling sourgrass over time. The association of the herbicide ammonium glufosinate with systemic herbicides implies a reduction in the control capacity of sourgrass plants over time

Impact of a purified blueberry extract on in vitro probiotic mucin-adhesion and its effect on probiotic/intestinal pathogen systems

Several arguments have been made to substantiate the need for natural antimicrobials for the food industry. With blueberry extracts, the most compelling are both their healthy connotation and the possibility of obtaining a multipurpose solution that can be an antioxidant, colorant, and antimicrobial. From an antimicrobial perspective, as blueberry/anthocyanin-rich extracts have been associated with a capacity to inhibit harmful bacteria while causing little to no inhibition on potential probiotic microorganisms, the study of potential benefits that come from synergies between the extract and probiotics may be of particular interest. Therefore, the present work aimed to evaluate the effect of an anthocyanin-rich extract on the adhesion of five different probiotics as well as their effect on the probiotics’ capacity to compete with or block pathogen adhesion to a mucin/BSA-treated surface. The results showed that, despite some loss of probiotic adhesion, the combined presence of extract and probiotic is more effective in reducing the overall amount of adhered viable pathogen cells than the PROBIOTIC alone, regardless of the probiotic/pathogen system considered. Furthermore, in some instances, the combination of the extract with Bifidobacterium animalis Bo allowed for almost complete inhibition of pathogen adhesioninfo:eu-repo/semantics/publishedVersio

Estágio docência: uma experiência com o professorar em tempos de pandemia / Teaching internship: an experience with teaching in pandemic times

Neste artigo apresentamos vivências experimentadas no estágio em docência do mestrado do Curso de Pós-graduação em Educação e Ensino de Ciências na Amazônia da Universidade do Estado do Amazonas-UEA, estágio no decorrer da disciplina Ciências da Natureza na Educação Infantil e nos Anos Iniciais do Ensino Fundamental, para duas turmas de sétimo período do curso de Pedagogia da referida instituição. Destacamos ser uma experiência diferenciada em decorrência do momento que vivenciamos em meio a pandemia da Covid-19, assim, temos como objetivo relatar a experiência do estágio em docência realizado de forma remota, sendo esta uma atividade de suma importância na formação de pós-graduandos, visto que no mestrado têm-se o objetivo de formar o pesquisador e o docente para o Ensino Superior. Utilizamos a abordagem metodológica da pesquisa qualitativa, do tipo exploratória, os dados foram coletados a partir da análise do diário de campo que foi elaborado no decorrer do estágio e das aulas gravadas no Google Meet e disponibilizadas no Google Classroom. A experiência possibilitou adquirir novos conhecimentos, troca de experiências, momentos de reflexão e aperfeiçoamento, reforçando que o estágio se constitui numa experiência de grande relevância para a formação docente, sendo um momento no qual o docente/estagiário tem a oportunidade de aprimorar sua forma de atuar, contribuindo tanto com a formação dos acadêmicos quanto com a sua própria formação