scholarly journals Variation in honey yield per hive of Africanized bees depending on the introducing time of young queens

2016 ◽  
Vol 46 (5) ◽  
pp. 895-900 ◽  
Author(s):  
Vladson Carbonari ◽  
Osmar Malaspina ◽  
Valter Vieira Alves Junior ◽  
Leandro Pereira Polatto
Keyword(s):  
Apis Mellifera ◽  
Egg Laying ◽  
First Year ◽  
Population Stability ◽  
Honey Production ◽  
Production Activity ◽  
Before And After ◽  
Africanized Bees ◽  
Autumn And Winter ◽  
Honey Yield

ABSTRACT: The objective of this research was to evaluate the honey production per hive and the egg laying rates of queens produced in 2007, 2008 and 2010. Thirty colonies initiated with a queen per colony at each climatic season were used during the three years. The years, started on January (summer), April (autumn), July (winter) and October (spring) and ended 12 months later, at the same periods related to each season of the later years. Honey supply were weighed before and after centrifugation to evaluate the quantity of the stored honey. Colonies with queens introduced during autumn and winter in the three years produced 57.2±6.0kg and 60.7±7.5kg of honey, respectively. In the first year of production activity, after the introduction of queens in the initial colonies, values were significantly higher than those obtained in colonies with queens introduced in the summer (39.3±7.6kg) and spring (41.8±3.7kg). Egg laying rates of queens were higher in spring (98.2±3.9%) and summer (88.4±7%), indicating greater food flow (flowerings) in these seasons compared to the averages in autumn (30.3±8.1%) and winter (24.5±7.2%). Produce and introduce queens of Africanized Apis mellifera in colonies initiated during autumn and winter was found to be economically feasible. Honey production of colonies initiated in these periods were higher and they had greater population stability in times of scarcity of flowerings.

scholarly journals Rearing Drones in Queen Cells of Apis mellifera Honey Bees

2016 ◽  
Vol 60 (2) ◽  
pp. 119-128
Author(s):  
Georgios Goras ◽  
Chrysoula Tananaki ◽  
Sofia Gounari ◽  
Elissavet Lazaridou ◽  
Dimitrios Kanelis ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Larval Development ◽  
Honey Bees ◽  
Royal Jelly ◽  
Early Stage ◽  
Egg Laying ◽  
Horizontal Position ◽  
Before And After ◽  
Queen Larvae ◽  
As If

Abstract We investigated the rearing of drone larvae grafted in queen cells. From the 1200 drone larvae that were grafted during spring and autumn, 875 were accepted (72.9%) and reared as queens. Drone larvae in false queen cells received royal jelly of the same composition and of the same amounts as queen larvae. Workers capped the queen cells as if they were drones, 9-10 days after the egg laying. Out of 60 accepted false queen cells, 21 (35%) were capped. The shape of false queen cells with drone larvae is unusually long with a characteristically elongate tip which is probably due to the falling of larvae. Bees start the destruction of the cells when the larvae were 3 days old and maximised it before and after capping. Protecting false queen cells in the colony by wrapping, reversing them upside down, or placing in a horizontal position, did not help. The only adult drones that emerged from the false queen cells were those protected in an incubator and in push-in cages. Adult drones from false queen cells had smaller wings, legs, and proboscis than regular drones. The results of this study verify previous reports that the bees do not recognise the different sex of the larvae at least at the early stage of larval development. The late destruction of false queen cells, the similarity in quality and quantity of the produced royal jelly, and the bigger drone cells, allow for the use of drone larvae in cups for the production of royal jelly.

Multiple Africanized Bee Stings in a Child

PEDIATRICS ◽  
1994 ◽  
Vol 94 (1) ◽  
pp. 115-117
Author(s):  
Barbara K. Ariue
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Tropical Climate ◽  
Apis Mellifera Scutellata ◽  
Africanized Honey Bees ◽  
Honey Production ◽  
African Honey Bees ◽  
Queen Bees ◽  
Africanized Bees

African honey bees, Apis mellifera scutellata (formerly adsonii) were imported to Brazil in 1956 to introduce a strain of bees with increased honey production which were more suited for the tropical climate.1,2 A year later, 26 African queen bees and their accompanying colonies accidentally escaped.1,2 The African queen bees soon began mating with established European bee races resulting in the hybrid Africanized honey bees.2 Like the pure African bees, the Africanized bees are more defensive with a greater tendency to sting than European bees.3 They respond quickly to the slightest disturbance of their nest and can send out many thousands of bees.

scholarly journals The microRNA miR-14 Regulates Egg-Laying by Targeting EcR in Honeybees (Apis mellifera)

Insects ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 351
Author(s):  
Xiao Chen ◽  
Jinluan Fu
Keyword(s):  
Apis Mellifera ◽  
Cross Talk ◽  
Target Gene ◽  
Oviposition Behavior ◽  
Critical Role ◽  
Egg Laying ◽  
Luciferase Assay ◽  
Biological Processes ◽  
Honey Production ◽  
Bee Colony

Honeybees (Apis mellifera) are important pollinators and are commonly used for honey production. The oviposition behavior in honeybees is complex and errors in oviposition could affect the development of the bee colony. Recent studies reported that RNA–RNA cross-talk played a critical role in several biological processes, including reproduction. Ecdysone receptor (EcR) and miR-14 were previously reported to play important roles in egg-laying. Moreover, EcR was predicted to be the target gene of miR-14 and may form miR-14-EcR cross-talk. In this study, knocking down and overexpression of miR-14 and EcR in queen model were implemented. The effect of RNA expression of miR-14 and EcR on the number of eggs laid by honeybee queens were analyzed. Further, luciferase assay was used to confirm the target relation between miR-14 and 3′UTR of EcR. The results showed that the expression of miR-14 and EcR was associated with the number of eggs laid by queens. In specific, inhibition of miR-14 expression enhanced the number of eggs laid, while overexpression of EcR enhanced the number of eggs laid. Lastly, we determined that miR-14 directly targets the mRNA of EcR. These findings suggest that the cross-talk of miR-14-EcR plays an important role in the number of eggs laid by honeybee queens.

scholarly journals Technological Advances to Reduce Apis mellifera Mortality: A Bibliometric Analysis

2021 ◽  
Vol 13 (15) ◽  
pp. 8305
Author(s):  
Cristiano Ziegler ◽  
Tiago Sinigaglia ◽  
Mario Eduardo Santos Martins ◽  
Adriano Mendonça Souza
Keyword(s):  
Apis Mellifera ◽  
The United States ◽  
Mortality Data ◽  
Time Interval ◽  
International Patent Classification ◽  
Patent Classification ◽  
Honey Production ◽  
Technological Advances ◽  
International Patent ◽  
Technology Life Cycle

Bees play a fundamental role in the ecological balance of ecosystems, due to the pollination process they carry out on crops, including the production of honey. However, the mortality of bees is a significant concern; bee mortality can occur for several reasons, such as pesticides, mites, viruses, climate change, pathogens and a reduction in food resources and nests. The honey bee (Apis mellifera) is the most widely used bee for commercial pollination and honey production. Therefore, the main objective is to compare the development of patent families and article publications related to the reduction in A. meliífera mortality. Data on patent families were collected on the Orbit platform, while data on scientific articles were collected on the Scopus database, with a time interval of 1980–2019. Subsequently, the data were analyzed in order to show the main priority countries, main assignees, and main IPC (International Patent Classification) codes, an analysis of the technology life cycle and the correlation between the data of patent families and articles published. The technologies that help to decrease bee mortality showed a technological maturity rate of 27.15% for patent families data and 53.35% for data from articles published in journals. It was noticed that the principal interest regarding the reduction in A. mellifera mortality is focused on universities, mainly in the United States and China.

Coronary Care in a General Hospital

1971 ◽  
Vol 16 (3) ◽  
pp. 173-182 ◽  
Author(s):  
Gavin Shaw ◽  
Bernard Groden ◽  
Evelyn Hastings
Keyword(s):  
Myocardial Infarction ◽  
Intensive Care Unit ◽  
Intensive Care ◽  
General Hospital ◽  
First Year ◽  
Duration Of Stay ◽  
Before And After ◽  
The Mean ◽  
Coronary Care ◽  
Made In

The establishment, staffing and structure and observations made in the first year of the existence of coronary care in an intensive care unit in a general hospital are recorded. Two hundred and twenty eight patients were admitted during the year in whom the diagnosis of myocardial infarction was confirmed. There were 29 deaths in the unit and 14 deaths occurred in the wards of the hospital after discharge from the unit. 49.1 per cent of the patients were admitted within 4 hours of the onset of symptoms and the mean duration of stay in the unit was 86.5 hours. The type of arrhythmia detected in the unit, and the treatment given to the patients both before and after admission to the intensive care unit are described.

Brazilian Propolis Production by Africanized Bees(Apis mellifera)

Bee World ◽  
2015 ◽  
Vol 92 (3) ◽  
pp. 58-68
Author(s):  
Mendelson Lima ◽  
Ricardo de Oliveira Orsi ◽  
Gerlane de Medeiros Costa ◽  
Osmar Malaspina
Keyword(s):  
Apis Mellifera ◽  
Africanized Bees ◽  
Brazilian Propolis

OP08 Levels and sources of stress reported by first year paramedic students associated with their first ambulance placement

2021 ◽  
Vol 38 (9) ◽  
pp. A4.2-A4
Author(s):  
Matthew Warren-James ◽  
Julie Hanson ◽  
Belinda Flanagan ◽  
Mary Katsikitis ◽  
Bill Lord
Keyword(s):  
Death And Dying ◽  
Educational Interventions ◽  
Fear Of Failure ◽  
Anxiety And Depression ◽  
Control Group ◽  
First Year ◽  
Before And After ◽  
Quasi Experimental ◽  
And Control ◽  
Experimental Group

BackgroundWhilst there is evidence to suggest paramedics experience significant stress when working in the ambulance setting little is known about the experiences of first year paramedic students. This research aimed to: (i) identify whether levels of stress, anxiety and depression experienced by first year paramedic students changed after ambulance placement compared to a control group, and (ii) identify the main perceived and actual sources of stress around ambulance placement.MethodsA before-and-after quasi-experimental design was used to compare whether the experience of ambulance placement altered the levels of stress, anxiety and depression in an experimental group that attended an ambulance placement (n = 20) and the control group who did not (n = 10). Online surveys encompassing the Depression, Anxiety and Stress Scale (DASS-21) and qualitative questions about sources of stress were concurrently deployed to both the experimental and control groups before and after the ambulance placement. Participants were first year paramedic students working in Queensland Ambulance Service, Australia.ResultsThere was a significant reduction in levels of stress in participants after undertaking their first ambulance placement (Mdn = -4.00) when compared to a control group (Mdn = 0.00), U = 52.5, p = .035, n2 = 0.15. Responses to survey questions suggest anticipation about experiencing death and dying of patients was the most frequently reported stressor of student paramedics before undertaking ambulance placements, however insecurity about knowledge, competence and fear of failure was the most frequently experienced stressor reported after completing ambulance placements.ConclusionsThe findings from this study suggest that the fear of the unknown may be worse than the reality. Anticipatory stress is the foremost problem for first year paramedic students attending their first ambulance placement. Placement pre-briefing should focus on educational interventions to build knowledge and skills competency to reduce stress levels and fear of failure.

Prenatal Sonographic Head Circumference and Cerebral Ventricle Width Measurements Before and After Open Fetal Myelomeningocele Repair – Prediction of Shunting During the First Year of Life

2018 ◽  
Vol 41 (05) ◽  
pp. 544-549 ◽  
Author(s):  
Ladina Vonzun ◽  
Franziska Maria Winder ◽  
Martin Meuli ◽  
Ueli Moerlen ◽  
Luca Mazzone ◽  
...  
Keyword(s):  
Head Circumference ◽  
Predictive Accuracy ◽  
False Positive Rate ◽  
Roc Curves ◽  
First Year ◽  
Fetal Head ◽  
Fetal Diagnosis ◽  
Before And After ◽  
Width Measurements ◽  
First Year Of Life

Abstract Purpose The aim of this study was to describe the sonographic evolution of fetal head circumference (HC) and width of the posterior horn of the lateral ventricle (Vp) after open fetal myelomeningocele (fMMC) repair and to assess whether pre- or postoperative measurements are helpful to predict the need for shunting during the first year of life. Patients & Methods All 30 children older than one year by January 2017 who previously had fMMC repair at the Zurich Center for Fetal Diagnosis and Therapy were included. Sonographic evolution of fetal HC and Vp before and after fMMC repair was assessed and compared between the non-shunted (N = 16) and the shunted group (N = 14). ROC curves were generated for the fetal HC Z-score and Vp in order to show their predictive accuracy for the need for shunting until 1 year of age. Results HC was not an independent factor for predicting shunting. However, the need for shunting was directly dependent on the preoperative Vp as well as the Vp before delivery. A Vp > 10 mm at evaluation for fMMC repair or > 15 mm before delivery identifies 100 % of the infants needing shunt placement at a false-positive rate of 44 % and 25 %, respectively. All fetuses with a Vp > 15 mm at first evaluation received a shunt. Conclusion Fetuses demonstrating a Vp of > 15 mm before in utero MMC repair are extremely likely to develop hydrocephalus requiring a shunt during the first year of life. This compelling piece of evidence must be appropriately integrated into prenatal counseling.

scholarly journals e-Learning readiness amongst nursing students at the Durban University of Technology

2017 ◽  
Vol 22 ◽  
pp. 300-306 ◽  
Author(s):  
Marilynne Coopasami ◽  
Stephen Knight ◽  
Mari Pete
Keyword(s):  
Nursing Education ◽  
Nursing Students ◽  
Traditional Learning ◽  
First Year ◽  
Technological Readiness ◽  
Technological Culture ◽  
University Of Technology ◽  
Before And After ◽  
Quasi Experimental ◽  
E Learning

e-Learning and other innovative open learning multimedia modalities of delivering education are being introduced to enhance learning opportunities and facilitate student access to and success in education. This article reports on a study that assessed students' readiness to make the shift from traditional learning to the technological culture of e-Learning at a university in Durban. A quasi-experimental study design was employed to assess such readiness in first year nursing students before and after an appropriate educational intervention. A modified Chapnick Readiness Score was used to measure their psychological, equipment and technological readiness for the change in learning method. It was found that, while students' psychological readiness for e-Learning was high, they lacked technological and equipment readiness. Although e-Learning could be used in nursing education, technological and equipment readiness require attention before it can be implemented effectively in this institution. Fortunately, these technical aspects are easier to resolve than improving psychological readiness.

Longevity of cross-fostered honey bee workers (Apis mellifera) of European and Africanized races

1981 ◽  
Vol 59 (8) ◽  
pp. 1571-1575 ◽  
Author(s):  
Mark L. Winston ◽  
Susan J. Katz
Keyword(s):  
Apis Mellifera ◽  
South America ◽  
Honey Bee ◽  
Race Differences ◽  
The Other ◽  
Partial Explanation ◽  
Africanized Bees ◽  
Honey Bee Workers

Longevities of two races of honey bee workers, European and Africanized, were compared both within colonies of their own races and within colonies of the other race. Differences in longevity were found which were likely due to inherited differences between workers of the two races. The age at which workers began foraging was one factor important in determining longevity. These results may provide a partial explanation for the success and impact of Africanized bees in South America, and also suggest that the northerly spread of these bees could be limited by worker life spans.

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