scholarly journals Varroa jacobsoni infestation of adult Africanized and Italian honey bees (Apis mellifera) in mixed colonies in Brazil

1999 ◽  
Vol 22 (3) ◽  
pp. 321-323 ◽  
Author(s):  
Geraldo Moretto ◽  
Leonidas João de Mello Jr.
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Mite Infestation ◽  
Varroa Jacobsoni ◽  
Africanized Honey Bees ◽  
African Honey Bees ◽  
Africanized Bees ◽  
Bee Colonies ◽  
Different Levels

Different levels of infestation with the mite Varroa jacobsoni have been observed in the various Apis mellifera races. In general, bees of European races are more susceptible to the mite than African honey bees and their hybrids. In Brazil honey bee colonies are not treated against the mite, though apparently both climate and bee race influence the mite infestation. Six mixed colonies were made with Italian and Africanized honey bees. The percentage infestation by this parasite was found to be significantly lower in adult Africanized (1.69 ± 0.44) than Italian bees (2.79 ± 0.65). This ratio was similar to that found in Mexico, even though the Africanized bees tested there had not been in contact with varroa, compared to more than 20 years of the coexistence in Brazil. However, mean mite infestation in Brazil on both kinds of bees was only about a third of that found in Mexico.

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 Nosema ceranae (Microsporidia: Nosematidae) Does Not Cause Collapse of Colonies of Africanized Apis mellifera (Hymenoptera: Apidae) in Tropical Climate

Sociobiology ◽  
2020 ◽  
Vol 67 (3) ◽  
pp. 408
Author(s):  
Lubiane Guimarães-Cestaro ◽  
T. S. Maia ◽  
Renata Martins ◽  
Maria Luísa Teles M. F. Alves ◽  
Ivani Pozar Otsuk ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Large Scale ◽  
Infection Intensity ◽  
Nosema Ceranae ◽  
Intensity Of Infection ◽  
Africanized Honey Bees ◽  
Intracellular Parasites ◽  
Africanized Bees ◽  
Bee Colonies

Nosemosis is an important disease that affects honey bees (Apis mellifera Lineu), caused by obligate intracellular parasites, Nosema  apis  and/or  Nosema  ceranae. Since the initial detection of N. ceranae in A. mellifera coincided with recent large-scale losses of bee colonies worldwide, the impacts of this parasite under field conditions are of great interest. Here we test two hypotheses, the first one, whether the climatic variables (temperature, air humidity and precipitation) influence the intensity of infection of the microsporidium Nosema spp. in Africanized honey bees (Apis mellifera), and the second, whether the local of hive installation (outdoor or roofed) influences the intensity of infection of these spores in Africanized honey bees. Between August 2013 and August 2016, samples of Africanized bees were collected weekly from 20 colonies, of which ten were located in an open area (outdoor apiary) and ten under a roof on a concrete floor (roofed apiary). N.  ceranae was the only species present. The type of apiary did not influence (p > 0.05) the number of spores of N. ceranae in Africanized bees. However, the infection intensities of the roofed apiary colonies were lower in the autumn. Regarding the meteorological parameters, there was a negative correlation between the winter infection intensities and the minimum temperature in the roofed apiary and the humidity in the outdoor apiary. The highest infection intensities occurred in both apiaries in the spring and summer, which may be related to higher pollen production. On average, the infection intensity was 16.19 ± 15.81 x 105, ranging from zero to 100.5 x105, and there were no records of collapse during the three years.

scholarly journals Potential Honey Bee Plants of Egypt

2015 ◽  
Vol 48 (2) ◽  
pp. 99-108 ◽  
Author(s):  
H.F. Abou-Shaara
Keyword(s):  
Apis Mellifera ◽  
Flowering Time ◽  
Honey Bee ◽  
Honey Bees ◽  
Potential Benefit ◽  
Review Paper ◽  
Specific Region ◽  
Pollen Production ◽  
Bee Colonies ◽  
Selection Of

AbstractThere are various plants with potential feeding importance to honey bee, Apis mellifera, colonies as source of pollen, nectar or both. Selection of suitable regions for apiaries mainly depends on the availability of honey bee plants in the apiary region. Identifying honey bee plants in specific region is very essential for honey and pollen production from honey bee colonies. Lacking the information about the beneficial plants for honey bees including; plant name, flowering time and potential benefit to honey bee colonies could be considered as a limitation for beekeeping development. So far honey bee plants are not well studied in Egypt. This review paper presents potential honey bee plants in Egypt using the available publications. The studies on honey bee plants in Egypt were also reviewed. This work can be considered as a guide for beekeepers and researchers. Moreover, the presented plants here can be used in comparing honey bee plants of Egypt with other countries to get a better understanding of honey bee flora. More detailed investigations on honey bee plants are strongly required to be done at all Egyptian Governorates

The influence of wax deprivation on temporal polyethism in honey bee (Apis mellifera L.) colonies

1988 ◽  
Vol 66 (9) ◽  
pp. 1997-2001 ◽  
Author(s):  
Linda A. Fergusson ◽  
Mark L. Winston
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Labour Force ◽  
Division Of Labour ◽  
Hypopharyngeal Gland ◽  
Temporal Polyethism ◽  
Study Support ◽  
Comb Building ◽  
Bee Colonies

Various levels of wax deprivation in honey bee (Apis mellifera) colonies induced shifts in the temporal pattern of division of labour in worker honey bees. The most extreme wax stress induced an earlier onset of foraging, and an increase in comb building and the production of wax scales. Moderate wax stress induced only an increase in comb building and production of wax scales. No significant differences in development of hypopharyngeal gland acinal diameter were found, suggesting that production of wax and brood food and associated behaviour patterns develop and decline independently. The graded changes in behavioural response to various levels of stress found in this study support the concept of a reserve labour force in honey bee colonies, which can respond to stress through shifts in caste ontogeny.

scholarly journals Characterisation of the UK honey bee (Apis mellifera) metagenome

2018 ◽  
Author(s):  
Tim Regan ◽  
Mark W. Barnett ◽  
Dominik R. Laetsch ◽  
Stephen J. Bush ◽  
David Wragg ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Molecular Ecology ◽  
Emerging Pathogens ◽  
Complex Product ◽  
Bee Health ◽  
Honey Bee Health ◽  
The Uk ◽  
Bee Colonies

AbstractThe European honey bee (Apis mellifera) plays a major role in pollination and food production, but is under threat from emerging pathogens and agro-environmental insults. As with other organisms, honey bee health is a complex product of environment, host genetics and associated microbes (commensal, opportunistic and pathogenic). Improved understanding of bee genetics and their molecular ecology can help manage modern challenges to bee health and production. Sampling bee and cobiont genomes, we characterised the metagenome of 19 honey bee colonies across Britain. Low heterozygosity was observed in bees from many Scottish colonies, sharing high similarity to the native dark bee, A. mellifera mellifera. Apiaries exhibited high diversity in the composition and relative abundance of individual microbiome taxa. Most non-bee sequences derived from known honey bee commensal bacteria or known pathogens, e.g. Lotmaria passim (Trypanosomatidae), and Nosema spp. (Microsporidia). However, DNA was also detected from numerous additional bacterial, plant (food source), protozoan and metazoan organisms. To classify sequences from cobionts lacking genomic information, we developed a novel network analysis approach clustering orphan contigs, allowing the identification of a pathogenic gregarine. Our analyses demonstrate the power of high-throughput, directed metagenomics in agroecosystems identifying potential threats to honey bees present in their microbiota.

scholarly journals Diagnosis of Varroa Mite (Varroa destructor) and Sustainable Control in Honey Bee (Apis mellifera) Colonies—A Review

Diversity ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 243 ◽  
Author(s):  
Aleš Gregorc ◽  
Blair Sampson
Keyword(s):  
Apis Mellifera ◽  
Organic Acids ◽  
Essential Oils ◽  
Honey Bee ◽  
Varroa Destructor ◽  
Mite Infestation ◽  
Varroa Mite ◽  
Mite Control ◽  
Bee Colonies ◽  
Reliable Methods

Determining varroa mite infestation levels in honey bee colonies and the proper method and time to perform a diagnosis are important for efficient mite control. Performing a powdered sugar shake or counting mites that drop from combs and bees onto a hive bottom board are two reliable methods for sampling varroa mite to evaluate the efficacy of an acaricide treatment. This overview summarizes studies that examine the efficacy of organic acids and essential oils, mite monitoring, and brood interruption for integrated varroa mite control in organic beekeeping.

scholarly journals Recording the proportion of damaged Varroa jacobsoni Oud. in the debris of honey bee colonies (Apis mellifera)

Apidologie ◽  
1999 ◽  
Vol 30 (4) ◽  
pp. 249-256 ◽  
Author(s):  
Kaspar Bienefeld ◽  
Fred Zautke ◽  
Denis Pronin ◽  
Adil Mazeed
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Varroa Jacobsoni ◽  
Bee Colonies

scholarly journals Ten Years of Deformed Wing Virus (DWV) in Hawaiian Honey Bees (Apis mellifera), the Dominant DWV-A Variant Is Potentially Being Replaced by Variants with a DWV-B Coding Sequence

Viruses ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 969
Author(s):  
Isobel Grindrod ◽  
Jessica L. Kevill ◽  
Ethel M. Villalobos ◽  
Declan C. Schroeder ◽  
Stephen John Martin
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Original Study ◽  
Viral Diversity ◽  
Deformed Wing Virus ◽  
Complete Dominance ◽  
Coding Sequence ◽  
Bee Colonies

The combination of Deformed wing virus (DWV) and Varroa destructor is arguably one of the greatest threats currently facing western honey bees, Apis mellifera. Varroa’s association with DWV has decreased viral diversity and increased loads of DWV within honey bee populations. Nowhere has this been better studied than in Hawaii, where the arrival of Varroa progressively led to the dominance of the single master variant (DWV-A) on both mite-infested Hawaiian Islands of Oahu and Big Island. Now, exactly 10 years following the original study, we find that the DWV population has changed once again, with variants containing the RdRp coding sequence pertaining to the master variant B beginning to co-dominate alongside variants with the DWV-A RdRp sequence on the mite-infested islands of Oahu and Big Island. In speculation, based on other studies, it appears this could represent a stage in the journey towards the complete dominance of DWV-B, a variant that appears better adapted to be transmitted within honey bee colonies.

scholarly journals Detection of Israeli Acute Paralysis Virus (IAPV) and Apis mellifera Filamentous Virus (AmFV) in Honey Bees in Mexico

2018 ◽  
Vol 62 (1) ◽  
pp. 141-144 ◽  
Author(s):  
Mayra C. García-Anaya ◽  
Alejandro Romo-Chacón ◽  
Alma I. Sáenz-Mendoza ◽  
Gerardo Pérez-Ordoñez ◽  
Carlos H. Acosta-Muñiz
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Developmental Stages ◽  
Viral Diseases ◽  
Israeli Acute Paralysis Virus ◽  
Colony Loss ◽  
Polymerase Chain ◽  
Bee Colonies ◽  
Paralysis Virus

Abstract The recent alarming loss of honey bee colonies around the world is believed to be related to the presence of viruses. The aim of this study was to detect two major viral diseases, Apis mellifera Filamentous virus (AmFV) and Israeli Acute Paralysis Virus (IAPV) using Reverse Transcription - Polymerase Chain Reaction RT-PCR, in honey bees in Mexico. Adult and larvae honey bee samples were collected from asymptomatic colonies of six major beekeeping regions in the state of Chihuahua, Mexico. Both viruses were detected in both developmental stages of honey bees, IAPV at a higher prevalence (23.5%) as compared to AmFV, only in 0.9% of samples. However, this is the first report on AmFV infection in Mexican apiaries. Further studies are required to understand the AmFV and IAPV impact on colony loss in Mexico and to develop strategies for enhancing the control of viral diseases.

scholarly journals POLLEN GIVING PLANTS VISITED BY THE HONEY BEE (APIS MELLIFERA L.)

2019 ◽  
pp. 59-66
Author(s):  
Zheko Radev
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Key Words ◽  
Honey Bee ◽  
Honey Bees ◽  
Centaurea Cyanus ◽  
Key Words Honey Bee ◽  
Pollen Traps ◽  
Bee Colonies ◽  
Floral Specialization

The analysis of the honey plants in the area of apiculture is very important about the development, reproduction and productivity of bee colonies. The knowledge of the floral specialization of Apis mellifera L. is main point for good beekeeping practices. The bees have visited 46 species of honey plants from 41 genera and 22 families. The honey bees prefer to collect pollen from 2 to 5-6 plant species during every single month. Bees mainly collect pollen from two or three plants every month. The agricultural species Brassica napus as well as the meadow flora – Сentaurea solstitialis and Centaurea cyanus are the most visited honey plants during their flowering. Bees prefer to collect pollen from 16 plants out of 46 visited taxons. Not all plants in the area serve as a source of pollen for the bees. The greatest amount of collected pollen comes from Brassica napus – 3798.69 g. The visited cultivated honey taxons are around 22 % but about 56.5 % of the total amount collected pollen. Around 78 % of the visited plants are common natural as well as about 43.5 % of the total amount collected pollen. Key words: honey bee, honey plants, pollen, pollen traps, melissopalynologia, specialization

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