scholarly journals Food and environmental degradation as causative agents of honey bee colonies decline: Mathematical model approach

2021 ◽  
pp. 446-454
Author(s):  
Kabiru Lere Najib ◽  
Adamu Shitu Hassan
Keyword(s):  
Honey Bee ◽  
Food Availability ◽  
Environmental Degradation ◽  
Compartment Model ◽  
Critical Threshold ◽  
Gradual Change ◽  
Trivial Equilibrium ◽  
Colony Collapse ◽  
Causative Agents ◽  
Sensitive Parameters

In this research, a new compartment model of honey bee population is developed to study the effects of gradual change of food availability and environmental degradation on bee population growth and development. The model is proved to be mathematical well posed and a non-trivial equilibrium point is shown to exist and asymptotically stable under certain conditions. The model predicts a critical threshold environmental degradation rate above which the population size of bees decline and subsequently collapse. Low environmental degradation and high food availability leads to stable bee population. Global sensitivity analysis is conducted to determine the most sensitive parameters of the model that can lead to colony collapse disorder. Numerical simulations are conducted to illustrate all the results.

scholarly journals Dynamics of the Presence of Israeli Acute Paralysis Virus in Honey Bee Colonies with Colony Collapse Disorder

Viruses ◽  
2014 ◽  
Vol 6 (5) ◽  
pp. 2012-2027 ◽  
Author(s):  
Chunsheng Hou ◽  
Hadassah Rivkin ◽  
Yossi Slabezki ◽  
Nor Chejanovsky
Keyword(s):  
Honey Bee ◽  
Colony Collapse Disorder ◽  
Israeli Acute Paralysis Virus ◽  
Colony Collapse ◽  
Bee Colonies ◽  
Paralysis Virus

scholarly journals Predictive Markers of Honey Bee Colony Collapse

PLoS ONE ◽  
2012 ◽  
Vol 7 (2) ◽  
pp. e32151 ◽  
Author(s):  
Benjamin Dainat ◽  
Jay D. Evans ◽  
Yan Ping Chen ◽  
Laurent Gauthier ◽  
Peter Neumann
Keyword(s):  
Honey Bee ◽  
Predictive Markers ◽  
Bee Colony ◽  
Colony Collapse ◽  
Honey Bee Colony

scholarly journals Early gut colonizers shape parasite susceptibility and microbiota composition in honey bee workers

2016 ◽  
Vol 113 (33) ◽  
pp. 9345-9350 ◽  
Author(s):  
Ryan S. Schwarz ◽  
Nancy A. Moran ◽  
Jay D. Evans
Keyword(s):  
Gene Expression ◽  
Honey Bee ◽  
Bacterial Species ◽  
Microbiome Composition ◽  
Bee Colony ◽  
Colony Collapse ◽  
Pathogen Prevalence ◽  
Modulation Of Gene Expression ◽  
Microbial Symbionts ◽  
Honey Bee Workers

Microbial symbionts living within animal guts are largely composed of resident bacterial species, forming communities that often provide benefits to the host. Gut microbiomes of adult honey bees (Apis mellifera) include core residents such as the betaproteobacterium Snodgrassella alvi, alongside transient parasites such as the protozoan Lotmaria passim. To test how these species affect microbiome composition and host physiology, we administered S. alvi and/or L. passim inocula to newly emerged worker bees from four genetic backgrounds (GH) and reared them in normal (within hives) or stressed (protein-deficient, asocial) conditions. Microbiota acquired by normal bees were abundant but quantitatively differed across treatments, indicating treatment-associated dysbiosis. Pretreatment with S. alvi made normal bees more susceptible to L. passim and altered developmental and detoxification gene expression. Stressed bees were more susceptible to L. passim and were depauperate in core microbiota, yet supplementation with S. alvi did not alter this susceptibility. Microbiomes were generally more variable by GH in stressed bees, which also showed opposing and comparatively reduced modulation of gene expression responses to treatments compared with normal bees. These data provide experimental support for a link between altered gut microbiota and increased parasite and pathogen prevalence, as observed from honey bee colony collapse disorder.

scholarly journals Risk Assessment of Pesticidal Toxicity and Threats on Pollinators: A Review on Honey Bee

2020 ◽  
Vol 8 (12) ◽  
pp. 2556-2561
Author(s):  
Kushal Naharki ◽  
Sabina Regmi
Keyword(s):  
Honey Bee ◽  
Honey Bees ◽  
Population Decline ◽  
Biotic Stresses ◽  
Agricultural Pesticides ◽  
Proper Management ◽  
Bee Health ◽  
Colony Collapse ◽  
Honey Bee Health ◽  
Effective Policy

Pollinators play vital roles to the environment, biodiversity conservation, food security and several dimensions of global sustainable development. Honey bee is an important pollinator globally but has been exposed to increasing threats from diseases, pesticides and biotic stresses. This review paper highlights the role of honey bees as pollinators, addresses threats which influence decline of honey bees and assess pesticidal risk toxicity on non-target organisms. Decline of honey bee population is caused by several factors including habitat fragmentation, pesticidal toxicity, colony collapse disorder and climate change. Pesticidal residue and toxicity has an adverse effect which results in honey bee population decline, disturb foraging and contamination of bee products. Residues of agricultural pesticides like pyrethroid and neonicotinoid pose a serious threat on honey bee health further reducing agricultural production and diversity. Pesticidal risk assessments are carried out to study effects of pesticides on pollinators with an aim to provide measures to safeguard their abundance, diversity and health. Sustainable agriculture, effective policy and proper management can decrease pollinators' risk by helping to diversify the agriculture for pollen and nectars with reduced usage of pesticides and proper management.

scholarly journals Characterization of viral siRNA populations in honey bee colony collapse disorder

Virology ◽  
2014 ◽  
Vol 454-455 ◽  
pp. 176-183 ◽  
Author(s):  
Nor Chejanovsky ◽  
Ron Ophir ◽  
Michal Sharabi Schwager ◽  
Yossi Slabezki ◽  
Smadar Grossman ◽  
...  
Keyword(s):  
Honey Bee ◽  
Colony Collapse Disorder ◽  
Bee Colony ◽  
Colony Collapse ◽  
Honey Bee Colony
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