scholarly journals You are what you eat: relative importance of diet, gut microbiota and nestmates for honey bee, Apis mellifera, worker health

Apidologie ◽  
2021 ◽  
Author(s):  
Gina Retschnig ◽  
Johannes Rich ◽  
Karl Crailsheim ◽  
Judith Pfister ◽  
Vincent Perreten ◽  
...  
Keyword(s):  
Body Weight ◽  
Apis Mellifera ◽  
Gut Microbiota ◽  
Honey Bee ◽  
Exposure Period ◽  
Short Exposure ◽  
Relative Importance ◽  
Worker Health ◽  
Negative Effect ◽  
Positive Effect

AbstractIn eusocial honey bees, Apis mellifera, diet, gut microbiota and nestmates can all contribute to the health of freshly emerged individual workers, but their relative importance for longevity and body weight is currently unknown. Here, we show that diet is most relevant, followed by gut microbiota and the presence of nestmates. Freshly emerged workers were randomly assigned to eight treatments (with or without honey/pollen, protein-substitute lactalbumin, antibiotic tetracycline and nestmates for 24 h) and maintained under standardised laboratory conditions. Longevity and food consumption were measured daily and fresh body weight was assessed at day 7. The data show a significantly better survival and a higher body weight in workers supplied with honey/pollen. Survival was higher in the lactalbumin treatments compared to the ones restricted to sucrose only, but lower compared to those with honey/pollen, highlighting the importance of micronutrients. In contrast, antibiotic treatment had a significant negative effect on longevity and body weight, which may be explained by inactivated gut microbiota and/or toxicity of the antibiotics. There was no positive effect of nestmates, probably due to the short exposure period. In contrast, nestmates showed a negative effect on survival in antibiotic-treated workers, possibly by transmitting pathogens and antibiotic-induced gut dysbiosis. In conclusion, a macro- and micronutrient-rich diet appears to be the key to individual honey bee worker health. Providing an optimal diet and possibly gut microbiota appears to be a promising way to promote managed A. mellifera health.

scholarly journals Colonization of the gut microbiota of honey bee (Apis mellifera) workers at different developmental stages

2020 ◽  
Vol 231 ◽  
pp. 126370 ◽  
Author(s):  
Zhi-Xiang Dong ◽  
Huan-Yuan Li ◽  
Yi-Fei Chen ◽  
Feng Wang ◽  
Xian-Yu Deng ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Gut Microbiota ◽  
Honey Bee ◽  
Developmental Stages

The Role of External Interaction for Innovation in Irish High-Technology Businesses

2011 ◽  
Vol 12 (4) ◽  
pp. 248-256 ◽  
Author(s):  
Declan Jordan ◽  
Eoin O'Leary
Keyword(s):  
High Technology ◽  
Process Innovation ◽  
Relative Importance ◽  
Business Innovation ◽  
Negative Effect ◽  
Product And Process Innovation ◽  
Innovation Output ◽  
Product And Process ◽  
Positive Effect

There is growing empirical evidence that external interaction is an important source of knowledge for business innovation. This paper contributes to the innovation literature by using new measures of interaction to explore the relative importance of external interaction for innovation in Irish high-technology businesses. Based on survey data, the paper finds that external interaction increases the probability of product and process innovation, but the effect is inconsistent across all external interaction agents. Interaction along the supply chain has a positive effect on innovation, and interaction with competitors has an insignificant effect on innovation output. Notably, the paper finds that interaction with higher education institutions has a negative effect on the probability of product and process innovation.

Effects of injection of saline with and without vitamin C on heat tolerance of neonatal chicks.

1992 ◽  
Vol 40 (1) ◽  
pp. 1-10
Author(s):  
A.A.M. Hamdy ◽  
A.M. Henken ◽  
W. van der Hel ◽  
A.K.I.A. Elmoty ◽  
A. Gh. Galal
Keyword(s):  
Body Weight ◽  
Vitamin C ◽  
Heat Tolerance ◽  
Heat Exposure ◽  
Exposure Period ◽  
Feed Conversion ◽  
Growing Period ◽  
Production Parameters ◽  
Neonatal Chicks ◽  
Positive Effect

The effects of injection of saline (0.9% NaCl) with or without vitamin C on heat tolerance of newly hatched chicks were studied. Sham-treated chicks served as controls. The chicks hatched from eggs incubated at 45% RH or 55% RH. Between the first and the second treatment, a 48-h exposure period to a constant environmental temperature of 30 degrees C took place. Consecutively, production parameters were studied during a 4-week growing period. During heat exposure, chicks hatched from eggs incubated at 45% RH lost less body weight than those from eggs incubated at 55% RH. At the end of exposure, body temperature was lower in chicks hatched from eggs incubated at 45% RH compared to 55% RH. Incubation RH did not affect growth rate, feed intake, feed conversion and mortality during the post-exposure growing period. Injection of saline with or without vitamin C before exposure resulted in a higher body weight after heat exposure compared with controls. Injection of saline enhanced body weight to a greater extent than saline with vitamin C. Injection of either solution before or after exposure did not affect production parameters in the 4-week period after exposure, except for mortality. Mortality of sham treated chicks was higher than that of once or twice injected chicks. It is concluded that saline injection increased heat tolerance, but that addition of vitamin C did not have any contributing positive effect. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Routes of Acquisition of the Gut Microbiota of the Honey Bee Apis mellifera

2014 ◽  
Vol 80 (23) ◽  
pp. 7378-7387 ◽  
Author(s):  
J. Elijah Powell ◽  
Vincent G. Martinson ◽  
Katherine Urban-Mead ◽  
Nancy A. Moran
Keyword(s):  
Apis Mellifera ◽  
Gut Microbiota ◽  
Honey Bee ◽  
Rrna Gene ◽  
Content Type ◽  
Core Species ◽  
Colonization Dynamics ◽  
Colonization Patterns ◽  
And Behavior ◽  
Nurse Worker

ABSTRACTStudies of newly emergedApis melliferaworker bees have demonstrated that their guts are colonized by a consistent core microbiota within several days of eclosure. We conducted experiments aimed at illuminating the transmission routes and spatiotemporal colonization dynamics of this microbiota. Experimental groups of newly emerged workers were maintained in cup cages and exposed to different potential transmission sources. Colonization patterns were evaluated using quantitative real-time PCR (qPCR) to assess community sizes and using deep sequencing of 16S rRNA gene amplicons to assess community composition. In addition, we monitored the establishment of the ileum and rectum communities within workers sampled over time from natural hive conditions. The study verified that workers initially lack gut bacteria and gain large characteristic communities in the ileum and rectum within 4 to 6 days within hives. Typical communities, resembling those of workers within hives, were established in the presence of nurse workers or nurse worker fecal material, and atypical communities of noncore or highly skewed compositions were established when workers were exposed only to oral trophallaxis or hive components (comb, honey, bee bread). The core species of Gram-negative bacteria,Snodgrassella alvi,Gilliamella apicola, andFrischella perrara, were dependent on the presence of nurses or hindgut material, whereas some Gram-positive species were more often transferred through exposure to hive components. These results indicate aspects of the colony life cycle and behavior that are key to the propagation of the characteristic honey bee gut microbiota.

scholarly journals The impact of inulin as feed supplement on gut microbiota of honey bee (Apis mellifera)

2019 ◽  
pp. 78-79
Author(s):  
Ákos Juhász ◽  
Alexandra Veress ◽  
Orsolya Adamcsik ◽  
Szabolcs Molnár ◽  
Helga Szalontai
Keyword(s):  
Apis Mellifera ◽  
Gut Microbiota ◽  
Honey Bee ◽  
Feed Supplement ◽  
The Impact

scholarly journals Can Gut Microbiota and Lifestyle Help Us in the Handling of Anorexia Nervosa Patients?

2019 ◽  
Vol 7 (2) ◽  
pp. 58 ◽  
Author(s):  
Vanessa Mendez-Figueroa ◽  
Jose Biscaia ◽  
Rosa Mohedano ◽  
Ascension Blanco-Fernandez ◽  
Maria Bailen ◽  
...  
Keyword(s):  
Mental Illness ◽  
Body Weight ◽  
Anorexia Nervosa ◽  
Gut Microbiota ◽  
Intestinal Microbiota ◽  
Sensory Abnormalities ◽  
New Research ◽  
The Brain ◽  
Positive Effect

Gut microbiota is composed of different microorganisms that play an important role in the host. New research shows that bidirectional communications happen between intestinal microbiota and the brain, which is known as the gut–brain axis. This communication is significant and could have a negative or positive effect depending on the state of the gut microbiota. Anorexia nervosa (AN) is a mental illness associated with metabolic, immunologic, biochemical, sensory abnormalities, and extremely low body weight. Different studies have shown a dysbiosis in patients with AN. Due to the gut–brain axis, it was observed that some of the symptoms could be improved in these patients by boosting their gut microbiota. This paper highlights some evidence connecting the role of microbiota in the AN onset and disease progress. Finally, a proposal is done to include the microbiota analysis as part of the recovery protocol used to treat AN patients. When conducting clinical studies of gut microbiota in AN patients, dysbiosis is expected to be found. Then the prescription of a personalized treatment rich in prebiotics and probiotics could be proposed to reverse the dysbiosis.

scholarly journals Characterization of the Kenyan Honey Bee (Apis mellifera) Gut Microbiota: A First Look at Tropical and Sub-Saharan African Bee Associated Microbiomes

2020 ◽  
Vol 8 (11) ◽  
pp. 1721
Author(s):  
Yosef Hamba Tola ◽  
Jacqueline Wahura Waweru ◽  
Gregory D. D. Hurst ◽  
Bernard Slippers ◽  
Juan C. Paredes
Keyword(s):  
Apis Mellifera ◽  
Gut Microbiota ◽  
Honey Bee ◽  
Amplicon Sequencing ◽  
Sub Saharan Africa ◽  
African Region ◽  
16S Rrna Amplicon Sequencing ◽  
Host Interaction ◽  
Sub Saharan

Gut microbiota plays important roles in many physiological processes of the host including digestion, protection, detoxification, and development of immune responses. The honey bee (Apis mellifera) has emerged as model for gut-microbiota host interaction studies due to its gut microbiota being highly conserved and having a simple composition. A key gap in this model is understanding how the microbiome differs regionally, including sampling from the tropics and in particular from Africa. The African region is important from the perspective of the native diversity of the bees, and differences in landscape and bee management. Here, we characterized the honey bee gut microbiota in sub-Saharan Africa using 16S rRNA amplicon sequencing. We confirm the presence of the core gut microbiota members and highlight different compositions of these communities across regions. We found that bees from the coastal regions harbor a higher relative abundance and diversity on core members. Additionally, we showed that Gilliamella, Snodgrassella, and Frischella dominate in all locations, and that altitude and humidity affect Gilliamella abundance. In contrast, we found that Lactobacillus was less common compared temperate regions of the world. This study is a first comprehensive characterization of the gut microbiota of honey bees from sub-Saharan Africa and underscores the need to study microbiome diversity in other indigenous bee species and regions.

Nitenpyram disturbs gut microbiota and influences metabolic homeostasis and immunity in honey bee (Apis mellifera L.)

2020 ◽  
Vol 258 ◽  
pp. 113671 ◽  
Author(s):  
Lizhen Zhu ◽  
Suzhen Qi ◽  
Xiaofeng Xue ◽  
Xinyue Niu ◽  
Liming Wu
Keyword(s):  
Apis Mellifera ◽  
Gut Microbiota ◽  
Honey Bee ◽  
Metabolic Homeostasis

scholarly journals Honey bee ( Apis mellifera ) gut microbiota promotes host endogenous detoxification capability via regulation of P450 gene expression in the digestive tract

2020 ◽  
Vol 13 (4) ◽  
pp. 1201-1212 ◽  
Author(s):  
Yuqi Wu ◽  
Yufei Zheng ◽  
Yanan Chen ◽  
Shuai Wang ◽  
Yanping Chen ◽  
...  
Keyword(s):  
Gene Expression ◽  
Apis Mellifera ◽  
Gut Microbiota ◽  
Digestive Tract ◽  
Honey Bee ◽  
P450 Gene

Precocene II is no Anti-Juvenile Hormone in the Honey Bee, Apis mellifera

1979 ◽  
Vol 34 (12) ◽  
pp. 1261-1263 ◽  
Author(s):  
Heinz Rembold ◽  
Christian Czoppelt ◽  
Gireesh K. Sharma
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Apis Mellifera ◽  
Juvenile Hormone ◽  
Honey Bee ◽  
Royal Jelly ◽  
Treatment Control ◽  
Larval Weight ◽  
Precocene Ii

The effect of precocene II on development of the honey bee, Apis mellifera, was studied in vitro. One- to two-day-old worker larvae (body weight 0.5 - 1.0 mg) were removed from the colonies, reared on royal jelly-yeast extract, and after 24 h were topically applied with different amounts (5 - 75 μg/larva) of precocene II. Toxicity was observed only with precocene doses of 50 μg/larva and more. The larval weight-gains declined with the increase of doses. The acetone-treated control had better survival and weight-gain as compared to the no-treatment control. The larval and pu­pal periods in the treated larvae remained unchanged as compared to the controls. The possibility of precocene acting as an antifeedant is discussed.

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