An assessment of honeybee colony matrices, Apis mellifera (Hymenoptera: Apidae) to monitor pesticide presence in continental France

2010 ◽  
Vol 30 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Marie-Pierre Chauzat ◽  
Anne-Claire Martel ◽  
Nicolas Cougoule ◽  
Philippe Porta ◽  
Julie Lachaize ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honeybee Colony

scholarly journals New approach to the study of division of labour in the honeybee colony (Apis mellifera L)

Apidologie ◽  
1994 ◽  
Vol 25 (6) ◽  
pp. 596-600 ◽  
Author(s):  
J. Klaudiny ◽  
J. Kulifajová ◽  
K. Crailsheim ◽  
J. Šimúth
Keyword(s):  
Apis Mellifera ◽  
Division Of Labour ◽  
New Approach ◽  
Honeybee Colony

scholarly journals Female Developmental Environment Delays Development of Male Honeybee (Apis Mellifera)

2020 ◽  
Author(s):  
Yi Bo Liu ◽  
Yao Yi ◽  
Amal Abdelmawla ◽  
Zhi Jiang Zeng ◽  
Xu Jiang He
Keyword(s):  
Apis Mellifera ◽  
Cell Size ◽  
Mammalian Target Of Rapamycin ◽  
Reproductive Organs ◽  
Caste Differentiation ◽  
The Body ◽  
Reproductive Tissues ◽  
Body Sizes ◽  
Honeybee Colony ◽  
Sex Regulation

Abstract Background Nutrition and cell size play an important role in the determination of caste differentiation in queen-worker of honeybee (Apis mellifera), whereas the haploid genome dominates the differentiation of drones. However, the effects of female developmental environment on the development of males remain unclear. In this study, young drone larvae were transferred into worker cells (WCs) or remained in drone cells (DCs) to rear drones. The parts of drone larvae were also grafted into queen cells (QCs) for 48 h and then transplanted into drone cells until emerging. Morphological indexes and reproductive organs of these three types of newly emerged drones were measured. Newly emerged drones and 3 d drone larvae from WCs, DCs and QCs were sequenced by RNA sequencing (RNA-Seq). Results Morphological results showed that newly emerged DC drones had bigger body sizes and more well-developed reproductive tissues than WC and QC drones, whereas the reproductive tissues of QC drones were relatively better than those of WC drones. Gene expression results showed a more clear difference among three groups. At the larval stage, there were 889, 1761 and 1927 significantly differentially expressed genes (DEGs) in WC/DC, QC/DC and WC/QC comparisons, respectively. The number of DEGs decreased in adult drones of these three comparisons [678 (WC/DC), 338 (QC/DC) and 518 (WC/QC)]. A high number of DEGs were involved in sex regulation, growth, olfaction, vision, mammalian target of rapamycin (mTOR), Wnt signaling pathways, etc. Weighted gene co-expression network analysis (WCGNA) showed that WC and DC larvae were closer than QC larvae, whereas QC and WC drones were closer than DC drones. These results revealed that DC drones had better development in the body and reproductive system than QC and WC drones. Conclusion This study demonstrated that the developmental environment of honeybee females including the larval diet and cell size delayed male development. Naturally, honeybee colony ovigerous workers in queen-less colonies or non-mated queens produce a large number of dysplasia drones which are not well-developed. Therefore, this study serves as a model for understanding the regulation of sexual differentiation in social insects by environmental factors.

scholarly journals Thermal efficiency extends distance and variety for honeybee foragers: analysis of the energetics of nectar collection and desiccation by Apis mellifera

2019 ◽  
Vol 16 (150) ◽  
pp. 20180879 ◽  
Author(s):  
Derek Mitchell
Keyword(s):  
Apis Mellifera ◽  
Significant Proportion ◽  
Thermal Conductance ◽  
Expanded Polystyrene ◽  
Nectar Concentration ◽  
Honeybee Colony ◽  
Sound Theoretical Basis ◽  
Ratio Energy ◽  
Key Parameter

The desiccation of nectar to produce honey by honeybees ( Apis mellifera L.) is an energy-intensive process, as it involves a quasi-isothermal change in the concentration of sugars from typically 20 to 80% by vaporization (honey ripening). This analysis creates mathematical models for: the collected nectar to honey ratio; energy recovery ratio; honey energy margin; and the break-even distance, which includes the factors of nectar concentration and the distance to the nectar from the nest; energetics of desiccation and a new factor, thermal energy efficiency (TEE) of nectar desiccation. These models show a significant proportion of delivered energy in the nectar must be used in desiccation, and that there is a strong connection between TEE and nest lumped thermal conductance with colony behaviour. They show the connection between TEE and honeybee colony success, or failure, in the rate of return, in terms of distance or quality of foraging. Consequently, TEE is a key parameter in honeybee populations and foraging modelling. For bee keeping, it quantifies the summer benefits of a key hive design parameter, hive thermal conductance and gives a sound theoretical basis for improving honey yields, as seen in expanded polystyrene hives.

scholarly journals Clustering of related workers in the honeybee colony (Apis mellifera L.): adaptive process or inevitable pattern?

Apidologie ◽  
2000 ◽  
Vol 31 (2) ◽  
pp. 223-233 ◽  
Author(s):  
Robin F.A. Moritz ◽  
Robin M. Crewe ◽  
H. Randall Hepburn
Keyword(s):  
Apis Mellifera ◽  
Adaptive Process ◽  
Honeybee Colony

scholarly journals Age components of queen retinue workers in honeybee colony (Apis mellifera)

Sociobiology ◽  
2016 ◽  
Vol 63 (2) ◽  
pp. 848 ◽  
Author(s):  
Yao Yi ◽  
You Li ◽  
Zhijiang Zeng
Keyword(s):  
Apis Mellifera ◽  
Honeybee Colony

It’s known that elaborate age is closely associated with polyethism in honeybee colonies, and the circle composed of queen retinue workers is a usual phenomenon in honeybee colonies. In this study, we showed that the age-bracket of retinue workers is 2-23d, but mainly  6-18d by marking newly hatched workers in two colonies.

scholarly journals First symptoms of queen loss in a honeybee colony (Apis mellifera)

Apidologie ◽  
2004 ◽  
Vol 35 (6) ◽  
pp. 565-573 ◽  
Author(s):  
Algirdas Skirkevicius
Keyword(s):  
Apis Mellifera ◽  
Honeybee Colony

scholarly journals Floral biology and behavior of Africanized honeybees Apis mellifera in soybean (Glycine max L. Merril)

2005 ◽  
Vol 48 (3) ◽  
pp. 367-378 ◽  
Author(s):  
Wainer César Chiari ◽  
Vagner de Alencar Arnaut de Toledo ◽  
Maria Claudia Colla Ruvolo-Takasusuki ◽  
Valeria Maria Attencia ◽  
Fabiana Martins Costa ◽  
...  
Keyword(s):  
Glycine Max ◽  
Apis Mellifera ◽  
Floral Biology ◽  
Pollen Loads ◽  
Covered Area ◽  
Hoarding Behavior ◽  
Glycine Max L ◽  
Honeybee Colony ◽  
And Behavior ◽  
Africanized Honeybees

This research was carried out to evaluate the pollination by Africanized honeybees Apis mellifera, the floral biology and to observe the hoarding behavior in the soybean flowers (Glycine max Merril), var. BRS-133. The treatments were constituted of demarcated areas for free visitation of insects, covered areas by cages with a honeybee colony (A. mellifera) and also covered areas by cage without insects visitation. All areas had 24 m² (4m x 6m). The soybean flowers stayed open for a larger time (82.82 ± 3.48 hours) in covered area without honeybees. The stigma of the flowers was also more receptive (P=0.0021) in covered area without honeybees (87.3 ± 33.0%) and at 10:42 o'clock was the schedule of greater receptivity. The pollen stayed viable in all treatments, the average was 99.60 ± 0.02%, which did not present differences among treatments. The percentage of abortion of the flowers was 82.91% in covered area without honeybees, this result was superior (P=0.0002) to the 52.66% and 53.95% of the treatments uncovered and covered with honeybees, respectively. Honeybees were responsible for 87.7% of the pollination accomplished by the insects. The medium amounts of total sugar and glucose measured in the nectar of the flowers were, 14.33 ± 0.96 mg/flower and 3.61 ± 0.36 mg/ flower, respectively, not showing differences (P<0.05) among the treatments. The total solids, measured through the manual refratometer were 21.33 ± 0.22% in uncovered area and 22.33 ± 0.38% in covered with honeybees and differed to each other (P=0.0001). The honeybees were the most frequent insect (95.18%). Other observed insects were the Lepidoptera with 3.51% and other bees with 1.32%, in uncovered area. Honeybees visited 2.24 flowers on average in uncovered area and 1.58 in covered with honeybees and presented behavior for nectar hoarding and hoarding nectar/pollen in this period. In uncovered area the time of nectar hoarding was 2.55 ± 0.07 seconds, this time was smaller (P=0.0039) than 2.87 ± 0.08 seconds observed in covered area with honeybees. The behavior for the hoarding type observed in honeybees foraging the soybean flowers, through the content of its honey stomach and pollen loads of its pollen basket showed that the nectar forager did not show a pattern for the nectar collection, but for the pollen collection the schedule of pollen peak of the forager was at 11:36 o'clock. The soybean flowers showed alteration in floral biology when exposed to honeybees.

scholarly journals Experimentally induced change in infectious period affects transmission dynamics in a social group

2006 ◽  
Vol 274 (1606) ◽  
pp. 61-65 ◽  
Author(s):  
Dhruba Naug ◽  
Brian Smith
Keyword(s):  
Apis Mellifera ◽  
Outer Edge ◽  
Transmission Dynamics ◽  
Social Model ◽  
Infectious Period ◽  
High Prevalence ◽  
Honeybee Colony ◽  
Group Members ◽  
Low Prevalence ◽  
Risk Categories

A key component of any epidemiological model is the infectious period, which greatly affects the dynamics and persistence of an infection. Social organization, leading to behavioural and spatial heterogeneities among potential susceptibles, interacts with infectious period to create different risk categories within a group. Using the honeybee ( Apis mellifera ) colony as a social model, a protocol that creates different infectious periods in individual bees and another that follows the diffusion of a transmittable tracer within a colony, we show experimentally how a short infectious period results in an epidemic process with low prevalence confined only to individuals at the outer edge of a group, while a long infectious period results in high prevalence distributed more universally among all the group members. We call this finding an evidence of ‘organizational immunity’ in a social network and propose that the honeybee colony provides a unique opportunity to test its role in social transmission processes.

scholarly journals The First Record of Facultative Parasitism of Megaselia Spp. (Diptera: Phoridae) in a Honeybee Colony in Slovakia

2020 ◽  
Vol 64 (4) ◽  
pp. 44-48
Author(s):  
R. Sabo ◽  
J. Legáth ◽  
M. Staroň ◽  
L. Sabová
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Global Climate ◽  
Warning Signal ◽  
First Record ◽  
Warming Trend ◽  
Global Climate Warming ◽  
Honeybee Colony ◽  
The University

AbstractThe current global climate warming trend leads to a shift in animal-habitats northwards. According to the Slovak Hydrometeorological Institute, summer 2018 was extremely hot and long throughout Slovakia. This was probably the fact that resulted in the detection of the presence of Megaselia spp. (Diptera: Phoridae) in one honeybee colony at the University apiary located in Rozhanovce (48° 46’ 27.24″ N; 21° 22’ 26.01″ E; eastern Slovakia). The first warning signal after opening the hive was the changed odour. During closer inspection, there were observed small parasitoid phorid larvae that emerged from the sealed bee brood; further examination revealed that the parasitized bee larvae and pupae contained emptied body cavities. Vice-versa, parasitisation was not detected in adult honey bees. Our knowledge of Diptera being responsible for parasitizing (even facultative) the honey bee (Apis mellifera) is still incomplete and needs to be investigated further in more details.

Sign in / Sign up

Export Citation Format

Share Document