247 research outputs found
The occurrence of the Monarch butterfly, Danaus plexippus L. in the Azores, with a brief review of its biology.
The Monarch butterfly, Danaus plexippus L. (Lepidoptera, Nymphalidae), has been an
occasional visitor to the Azores. However, during the last two decades it has become a
resident species in these islands and has adapted its behaviour to the geographic conditions of this new habitat, feeding on Gomphocarpus fruticosus (L.) Aiton fil. (Asclepiadaceae). The first confirmed breeding of this butterfly in the Azores (Faial island) is reported here and dates from the summer of 1994. However, previous sightings of only a very few adult individuals indicate that there was already a small resident population before 1994.
Breeding was confirmed in three additional sites: on 3 June 1999, three adults of Monarch butterfly were observed laying eggs on G. fruticosus bushes near Ribeirinha and on 28 June 1999, several caterpillars were found in the same place. Larvae were also found at S. Roque (Pico island) and larvae and pupae at S. Carlos (Terceira island) in the summer of 1999. Monarch butterflies have been observed, occasionally, in Faial, Pico, Terceira, São Miguel, Santa Maria and Corvo during winter and spring, indicating the existence of a resident population all year round, but the vegetation used for wintering shelters has not yet been confirmed
Nest predation of Cory's shearwater Calonectris borealis (Aves, Procellariiformes) by introduced mammals on Terceira Island, Azores
ABSTRACT: The Azores holds the largest population of Cory's shearwater Calonectris borealis (Cory, 1881) (Aves, Procellariiformes) in the world. Apart from a few mammal-free islets, the bulk of the population breeds in coastal areas on the main human-inhabited islands, where several non-native predators have been introduced. Throughout the entire year of the 2019 breeding season, we used motion-triggered cameras and regularly visited three colonies of Cory's shearwater to identify nest predators and the factors affecting nest predation. A total of 292,624 photos were obtained, of which 97.7% were of Cory’s shearwaters, 1.7% of non-target species (e.g. other birds, rabbits) and 0.52% of potential predators. Of the monitored nests, 25.7% were predated (n = 9), mainly by black rats (n = 8), but also by cats (n = 1). The relative abundance of black rats in the nests was the main factor explaining nest mortality. This variable was significantly and negatively related with the daily survival rate of Cory’s shearwater nestlings. Identification of the main nest predators is crucial for the management and conservation of native bird populations, particularly on oceanic islands, which harbour an important number of threatened and endemic species.info:eu-repo/semantics/publishedVersio
Qualidade e aceitação de frutos de variedades de bananeira em sistema orgânico.
A bananeira, Musa spp., é cultivada de norte a sul do País e a fruta consumida por todos os brasileiros, em média de 28 kg habitante-1 ano-1. Constitui-se em fonte de vitaminas C (59 a 216 mg kg-1), B6 (0,3 a 1,7 mg kg-1) e B1 (0,3 a 0,9 mg kg-1), minerais K (2.640 a 3.870 mg kg-1), Mg (240 a 300 mg kg-1), P (160 a 290 mg kg-1), Ca (30 a 80 mg kg-1), Fe (2 a 4 mg kg-1) e Cu (0,5 a 1,1 mg kg-1), carboidratos (203 a 337 g kg-1) e proteínas (11 a 18 g kg-1) (TACO, 2011). No sistema orgânico o uso de variedades resistentes a pragas e doenças e a utilização de coberturas vivas do solo com leguminosas, como fonte de nitrogênio, é uma prática recomendada. O feijão-de-porco sobressai pelo grande volume de fitomassa produzida, agressividade do seu sistema radicular e capacidade de adaptação a condições variadas de solo e clima. Essa leguminosa tem-se mostrado benéfica à bananeira na redução do ciclo de produção das variedades e no desenvolvimento vegetativo e produtivo (NASCIMENTO et al., 2009)
Association of thyroid function, within the euthyroid range, with cardiovascular risk: The EPIPorto study
Background: Thyroid hormones are important modulators of cardiovascular function. Both hypothyroidism and hyperthyroidism are known to contribute to an increased cardiovascular risk. It remains uncertain whether thyroid hormones level within the euthyroid range are associated with cardiometabolic risk. We aimed to evaluate the association between thyroid function levels within the euthyroid range and cardiovascular risk in a population-based cohort. Methods: Eight hundred thirty-five subjects aged ≥45 years from the EPIPorto population-based cohort were included. We excluded participants with TSH, free T4 (FT4), or free T3 (FT3) outside of the reference range, or with previous cardiovascular or thyroid disease. The associations between thyroid function, cardiovascular risk factors and the 10-year estimated risk of cardiovascular events (using SCORE2 and SCORE2-OP) were evaluated in linear and logistic regression models, crudely and adjusting for age, sex, BMI, diabetes, and smoking. Results: The mean age of the participants was 61.5 (SD 10.5) years and 38.9% were men. Eleven percent of the participants had diabetes, 47.8% had dyslipidemia, and 54.8% had hypertension. The mean body mass index (BMI) was 27.4 (SD 4.6) kg/m2, and the median (percentile25-75) 10-year risk of cardiovascular events was 5.46% (2.92, 10.11). Participants with higher BMI, larger waist circumference and higher hs-CRP had higher levels of FT3 and FT3/FT4 ratio. Lower FT3/FT4 ratio and higher FT4 levels were associated with higher prevalence of diabetes and more adverse lipid profile. Higher TSH, lower FT3 and lower FT3/FT4 ratio were associated with lower eGFR. Lower FT3, lower FT3/FT4 ratio and higher FT4 were associated with an increased 10-year risk of cardiovascular events. Conclusions: In a population-based study, variations of thyroid function within the euthyroid range were associated with cardiovascular risk factors. On one hand, individuals with higher BMI, larger waist circumference and higher hs-CRP had higher levels of FT3 and FT3/FT4 ratio. On the other hand, a decreased conversion of T4 to T3 (lower FT3, lower FT3/FT4 ratio and/or higher FT4) was associated with a higher prevalence of diabetes, a more adverse lipid profile, a lower eGFR and an increased 10-year risk of cardiovascular events. Copyright © 2022 Neves, Fontes-Carvalho, Borges-Canha, Leite, von Hafe, Vale, Martins, Guimarães, Carvalho, Leite-Moreira and Azevedo.This work was supported by the DOCnet project (NORTE-01-0145-FEDER-000003), supported by Norte Portugal Regional Operational Program (NORTE 2020), under the PORTUGAL2020 Partnership Agreement, through the European Regional Development Fund (ERDF), and the NETDIAMOND project (POCI-01-0145-FEDER-016385), supported by European Structural and Investment Funds, Lisbon’s Regional Operational Program 2020, and national funds from the Portuguese Foundation for Science and Technology – both projects through the Cardiovascular Research Center (UnIC, FCT 51/94) – and by the Portuguese Foundation for Science and Technology (grant POCI/SAU-ESP/61492/2004) and the Unidade de Investigação em Epidemiologia – Instituto de Saúde Pública da Universidade do Porto (EPIUnit) (POCI-01-0145-FEDER-006862, ref. UID/DTP/04750/2013). This work is financed by national funds through the FCT - Foundation for Science and Technology, I.P., within the scope of projects UIDB/04750/2020 and LA/P/0064/2020
Oral glucose tolerance testing at 1 h and 2 h: relationship with glucose and cardiometabolic parameters and agreement for pre-diabetes diagnosis in patients with morbid obesity
Background: One hour plasma glucose concentration (1hPG) during an oral glucose tolerance test (OGTT) may be an alternative to 2-h plasma glucose concentration (2hPG) in the identification of individuals at increased risk of hyperglycaemia, although its role is not fully understood. Aim: We aim to investigate the relationship of these measures with other glucose parameters, as well as their relationship with cardiometabolic risk markers and the level of agreement for prediabetes mellitus diagnosis, in a sample of patients with morbid obesity. Methods: We retrospectively evaluated 656 patients with morbid obesity without diagnosed diabetes. To define prediabetes with 2hPG, 2022 American Diabetes Association guidelines criteria were used, while for 1hPG, glucose ≥ 155 mg/dL was considered. Cohen’s Kappa coefficient was used to assess the agreement between both measures of prediabetes mellitus diagnosis. Results: A Cohen’s Kappa coefficient of 0.405 (p < 0.001) was obtained. The 1hPG were positively correlated with homeostatic model assessment for insulin resistance (HOMA-IR) (ρ = 0.281, p < 0.001), fasting plasma glucose (FPG) (ρ = 0.581, p < 0.001), glycated haemoglobin (Hb1AC) (ρ = 0.347, p < 0.001) and were negatively correlated with homeostatic model assessment for cell-β function (HOMA-β) (ρ = −0.092, p = 0.018). 2hPG were also correlated with the same parameters, except for HOMA-β. Conclusion: A fair agreement between 1 and 2hPG was verified. 1hPG criteria may be a useful indicator of β-cell dysfunction and insulin resistance in patients with morbid obesity without diabetes diagnosis. © 2022, The Author(s).Funding text 1: We would like to acknowledge the support of all the endocrinologists, surgeons and nutritionists of the Multidisciplinary Group for Surgical Management of Obesity.; Funding text 2: Isabel Maia holds a PhD Grant (ref: SFRH/BD/117371/2016) co-funded by the Foundation for Science and Technology—FCT (The Portuguese Ministry of Science, Technology and Higher Education) and the POCH/FSE programme
Crescimento de espécies arbóreas nativas em recuperação de área degradada no litoral do Paraná.
Este estudo teve como objetivo avaliar o crescimento das espécies Senna multijuga, Myrsine coriaceae, Schizolobium parahyba var. parahyba, Inga edulis, I. marginata e Citharexylum myrianthum na recuperação de uma área degradada pela pecuária. O experimento foi desenvolvido na Reserva Natural da Guaricica em Antonina, PR. Foram testados quatro tratamentos com diferentes densidades de indivíduos de cada espécie, cada um com três repetições em blocos de 3.000 m2. A avaliação foi baseada nas variáveis: altura total (h), diâmetro a 1,30 m do solo, área de cobertura da copa, área basal e mortalidade. Com exceção da mortalidade que foi comparada pelo teste de Kruskal-Wallis, as demais variáveis foram comparadas pelo teste de Tukey a 5% de significância. I. edulis apresentou o melhor desenvolvimento e I. marginata o pior, enquanto M. coriacea apresentou a menor mortalidade e S. multijuga a maior. Estes resultados se expressaram entre os tratamentos, pois maior densidade de I. edulis gerou maior h média e maior densidade de S. multijuga gerou maior mortalidade. Maiores proporções de I. edulis tendem a aumentar a eficiência de projetos de restauração, enquanto C. myrianthum e M. coriacea também apresentam potencial para plantios na região do estudo
Thyroid Function and the Risk of Non-Alcoholic Fatty Liver Disease in Morbid Obesity
Background: An association between hypothyroidism and the risk of Non-alcoholic Fatty Liver Disease (NAFLD) has been suggested. This association remains to be elucidated in patients with morbid obesity. Aim: To evaluate the association between thyroid function and parameters of liver function and hepatic scores in patients with morbid obesity. Methods: Patients with morbid obesity followed in our center between January 2010 and July 2018 were included. The ones without evaluation of liver and thyroid functions were excluded. Fatty Liver Index (FLI) and BARD scores were used as predictors of hepatic steatosis and fibrosis, respectively. Results: We observed a positive association between TSH and both BARD (OR 1.14; p = 0.035) and FLI (OR 1.19; p = 0.010) in the unadjusted analysis. We found a negative association between free triiodothyronine levels and BARD (OR 0.70; p<0.01) and a positive association between free triiodothyronine levels and FLI (OR 1.48; p = 0.022). Concerning liver function, we found a positive association between total bilirubin and free thyroxine levels (ß = 0.18 [0.02 to 0.35]; p = 0.033) and a negative association between total bilirubin and free triiodothyronine levels (ß = -0.07 [-0.14 to -0.002]; p = 0.042). Conclusion: Higher levels of TSH and free triiodothyronine may be associated with a higher risk of NAFLD, particularly steatosis, in patients with morbid obesity
Beta Cell Function as a Baseline Predictor of Weight Loss After Bariatric Surgery
Background: Obesity is a multifactorial disease, which is strongly associated to other metabolic disorders. Bariatric surgery is the most effective treatment of morbid obesity. The role of beta cell function in weight loss after bariatric surgery is uncertain. Aim: To evaluate the association between beta cell function and percentage of total body weight loss (TBWL%) 1, 2, 3, and 4 years after bariatric surgery in patients with morbid obesity. Methods: Retrospective longitudinal study in patients with morbid obesity followed in our center between January 2010 and July 2018. Patients were excluded if they had diabetes at baseline or missing data on the needed parameters. We evaluated baseline Homeostatic Model Assessment of IR, Homeostatic Model Assessment of ß-cell function (HOMA-beta), Quantitative Insulin Sensitivity Check Index, and Matsuda and DeFronzo index, and TBWL% at years 1 to 4. Linear regression models were used to evaluate the association of indexes of insulin resistance with TBWL% (unadjusted and adjusted for age, sex, BMI, and type of surgery). Results: There were 1,561 patients included in this analysis. HOMA-beta was negatively associated with TBWL% at second, third, and fourth years post-surgery (ß = -1.04 [-1.82 to -0.26], p<0.01; ß = -1.16 [-2.13 to -0.19], p=0.02; ß = -1.29 [-2.64 to 0.06], p=0.061, respectively). This was not observed in the first year post-surgery nor for the other indexes. Glycemia at baseline was positively associated to EWL% at second and third years post-surgery. Conclusion: ß-cell function at baseline seems to be associated to long-term weight loss, explicitly after the first year post bariatric surgery. This might be a helpful predictor of weight loss in clinical practice.The authors would like to thank all the CRIO group members for following these patients: John Rodrigues Preto; Eduardo Jorge Lima da Costa; Hugo Miguel Santos Sousa; André Manuel Costa Pinho; Carla Cristina Oliveira Rodrigues Teixeira Galego; Maria Flora Ferreira Sampaio Carvalho Correia; Cidália Fátima Castro Carção Gil; Diva Bizarro Figueiredo Melim; Eduardo Gil Ferreira Rodrigues Pinto; Marco António Costa Silva; Cristina Sarmento Pontes Martins; Luis Miguel Gonçalves Pereira; Inês Vasconcelos Sousa Magalhães; Isabel Maria Boavista Vieira Marques Brandão; Sertório Manuel Freitas Andrade, and Patrícia Maria Lopes Nunes. The authors would also like to thank the patients and the hospital for their support. The authors would like to thank to Associação dos Amigos do Serviço de Endocrinologia do Hospital de S. João
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