2006 ◽  
Vol 66 (4) ◽  
pp. 1037-1043 ◽  
Author(s):  
D. E. Nava ◽  
P. Fortes ◽  
D. G. de Oliveira ◽  
F. T. Vieira ◽  
T. M. Ibelli ◽  
...  

The lepidopterans Platynota rostrana (Walker) (Tortricidae) and Phidotricha erigens Raganot (Pyralidae) have been found frequently in citrus groves in São Paulo State in recent years. Since in Brazil, the fertility cycle of these two species is largely unknown, as are details of the damage wrought by them in crops, this research studied these aspects of the two species, which were kept under laboratory conditions (temperature 25 ± 2 °C, 70 ± 10% RH, 14 h photophase) and on an artificial diet. The duration of the biological cycle (egg-adult) for P. rostrana was 38.3 days and total viability was 44.0%; for P. erigens these values were 32.5 days and 63.6%, respectively. Both species showed five larval instars. Females of P. rostrana laid an average of 308 eggs, whereas those of P. erigens laid an average of 106 eggs. In both species, female pupae were heavier than males. Male and female longevity for both species was nearly 10 days. Based on the data obtained, the artificial diet produced better results in P. rostrana than in P. erigens. If these species, which have the potential to reach pest status in the citrus groves of São Paulo State, could be reared on an artificial diet, research on their control by alternative methods would be easier.


1999 ◽  
Vol 13 (5) ◽  
pp. 413-420 ◽  
Author(s):  
William J.M. Hrushesky ◽  
Rostislav Vyzula ◽  
Patricia A. Wood
Keyword(s):  

1966 ◽  
Vol 7 (4) ◽  
pp. 242-247 ◽  
Author(s):  
David S. Janowsky ◽  
Roderic Gorney ◽  
Bret Kelley

2018 ◽  
pp. 1-24
Author(s):  
Jeffrey Bilbro

The introduction analyzes the different forms, values, and virtues that are embedded in an industrial economy and contrasts them with those that characterize a sustainable economy. Berry’s vision critiques the industrial grammar of specialization, competition, and capital that underlies our contemporary way of life, shaping areas as disparate as agriculture, medicine, education, science, architecture, aesthetics, and energy. Though such an approach has proven remarkably effective in some ways, particularly in its ability to solve isolated problems, Berry argues that these industrial forms of life contribute to disease, are vulnerable to disruption, and cause lasting damage to their environments. Instead, Berry challenges us to imagine more harmonious, formally complex solutions to our problems, and his standard for lasting, sustainable solutions is health. Through its formal order, health accounts for the one fundamental reality that an industrial logic seeks to ignore or conquer—death. Sustainable economies practice virtues of renewal and return, cultivating death so that it serves life in ways that are analogous to the organic fertility cycle. In this way, such economies enable their members to practice resurrection.


2018 ◽  
Vol 2018 (1) ◽  
pp. 10090
Author(s):  
Ke Michael Mai ◽  
Kai Chi Yam ◽  
Sherry Shi Yi Aw ◽  
Wu Wei ◽  
Camilla Eunyoung Song

2021 ◽  
Vol 12 (5) ◽  
pp. 284-287
Author(s):  
Khalid Arab Awartani ◽  
Amani Aldriweesh ◽  
Ali Alhibshi ◽  
Fatimah Abualsaud

Background: After the start of the coronavirus disease (COVID-19) pandemic, assisted reproductive services were suspended and restarted in in vitro fertilization (IVF) clinics worldwide. In our center we implemented screening of all couples for COVID-19 the day before starting the ovulation cycle and before the ovum pick-up (OPU) procedure. Objectives: Assess the prevalence of asymptomatic COVID-19 among couples undergoing in vitro fertilization (IVF). Design: Cross-sectional and retrospective cohort study. Setting: An IVF unit in Riyadh from July to November 2020. Patients and methods: Patients and their partners were tested for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection 24-48 hours before their initial visit to initiate the fertility cycle and again prior to the ovum pick-up visit. Main outcome measures: Prevalence of asymptomatic SARS-CoV-2 infection. Sample size: 508 couples. Results: A total of 508 couples were tested. Of the 508 cycles of therapy, 24 (4.7%) were cancelled, 16 (3.14%) before the start of the cycle, and 8 (1.66%) before ovum pick-up, because one or both partners in the couple tested SARS-CoV-2 positive. Before the start of the cycle, 3 patients and their partners both tested positive; 7 patients tested positive and their partners tested negative; and 6 partners tested positive and the patient testing negative. In addition, on retesting 481 couples before OPU 3 patients and their partners both tested positive; 3 patients tested positive, and their partners tested negative; and 2 partners tested positive and the patients tested negative. Conclusion: The prevalence of asymptomatic SARS-CoV-2 infection in couples seeking IVF was higher than that in the general population. Implementing a policy of screening couples for SARS-CoV-2 prior to IVF treatment, minimized the possibility of transmission of SARS-CoV-2 from patients to healthcare workers.


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