modeling honey bee populations home plos in sweden

Just fill in the form below, click submit, you will get the price list, and we will contact you within one working day. Please also feel free to contact us via email or phone. (* is required).

  • Modeling Honey Bee Populations - Home - PLOS

    2015-7-6 · Eusocial honey bee populations (Apis mellifera) employ an age stratification organization of egg, larvae, pupae, hive bees and foraging bees. Understanding the recent decline in honey bee colonies hinges on understanding the factors that impact each of these different age castes. We first perform an analysis of steady state bee populations given mortality rates within each bee caste and find ...

    Get Price
  • Modeling Honey Bee Populations - NASA/ADS

    2015-7-1 · adshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A

    Get Price
  • Modelling Food and Population Dynamics in Honey

    2013-5-7 · Honey bees (Apis mellifera) are increasingly in demand as pollinators for various key agricultural food crops, but globally honey bee populations are in decline, and honey bee colony failure rates have increased. This scenario highlights a need to understand the conditions in which colonies flourish and in which colonies fail. To aid this investigation we present a compartment model of bee ...

    Get Price
  • A Quantitative Model of Honey Bee Colony ... - Home

    2011-4-18 · Since 2006 the rate of honey bee colony failure has increased significantly. As an aid to testing hypotheses for the causes of colony failure we have developed a compartment model of honey bee colony population dynamics to explore the impact of different death rates of forager bees on colony growth and development. The model predicts a critical threshold forager death rate beneath which ...

    Get Price
  • Parasite Pressures on Feral Honey Bees (Apis ... -

    2014-8-15 · Feral honey bee populations have been reported to be in decline due to the spread of Varroa destructor, an ectoparasitic mite that when left uncontrolled leads to virus build-up and colony death. While pests and diseases are known causes of large-scale managed honey bee colony losses, no studies to date have considered the wider pathogen burden in feral colonies, primarily due to the ...

    Get Price
  • Evaluation of the Distribution and Impacts ... - Home -

    2014-4-16 · In East Africa, honey bees (Apis mellifera) provide critical pollination services and income for small-holder farmers and rural families. While honey bee populations in North America and Europe are in decline, little is known about the status of honey bee populations in Africa. We initiated a nationwide survey encompassing 24 locations across Kenya in 2010 to evaluate the numbers and sizes of ...

    Get Price
  • Temporal changes in the viromes of Swedish ... -

    2018-12-6 · The parasitic mite, Varroa destructor, in combination with the viruses it vectors, is the main cause for global colony losses of the European honeybee, Apis mellifera. However, an isolated honeybee population established in 1999 on the Island of Gotland, Sweden has naturally acquired resistance to the mite, and has survived without mite control treatment for more than 18 years.

    Get Price
  • Home - PLOS

    2021-4-27 · Breaking boundaries.Empowering researchers.Opening Science. PLOS is a nonprofit, Open Access publisher empowering researchers to accelerate progress in science and medicine by leading…

    Get Price
  • Increased Tolerance and Resistance to Virus ... - Home

    2014-6-13 · The honey bee ectoparasitic mite, Varroa destructor, has a world-wide distribution and inflicts more damage than all other known apicultural diseases. However, Varroa-induced colony mortality is more accurately a result of secondary virus infections vectored by the mite. This means that honey bee resistance to Varroa may include resistance or tolerance to virus infections.

    Get Price
  • Neonicotinoid Insecticides and Their Impacts ... -

    2015-8-27 · The western honey bee Apis mellifera was the most common bee species studied (162 studies) followed by the two bumble bee species Bombus terrestris (24 studies) and Bombus impatiens (10 studies). Between one and six studies were found for each of 15 other bee species or species groups ( …

    Get Price
  • A historical review of managed honey bee

    2010-1-1 · 1.. Introduction – the value of honey beesThe European honey bee, Apis mellifera L., is the most commonly managed bee in the world. A highly adaptable species, it has a native range that stretched from the southern parts of Scandinavia to Central Asia and throughout Africa (Seeley, 1985, Ruttner, 1988, Sheppard and Meixner, 2003).Since the 1600s, however, A. mellifera’s range has …

    Get Price
  • Testing the multiple stressor hypothesis:

    2021-3-31 · 2012 Drastic historic shifts in bumble-bee community composition in Sweden. ... implications for honey bee health. PLoS ONE 5, e9754. ... 2017 glmmTMB balances speed and flexibility among packages for zero-inflated generalized linear mixed modeling. R J. 9, 378-400.

    Get Price
  • Honey bee and native solitary bee foraging behavior

    Authors: María Cecilia Estravis Barcala aff001; Florencia Palottini aff001; Walter Marcelo Farina aff001 Authors place of work: Universidad de Buenos Aires, Facultad de Ciencias

    Get Price
  • Firm Efficiency and Returns-to-Scale in the Honey Bee ...

    The price of a pound of a honey was obtained through personal communication with the Sue Bee Corporation’s Honey Marketing Division.). Regarding off-farm income, Larsén (2010) found that farmer participation in off-farm employment was associated with a weak increase in technical efficiency of farms in Sweden.

    Get Price
  • European isolates of the Microsporidia ... - Home -

    2015-6-30 · The western honey bee (Apis mellifera) is the most important commercially managed pollinator, with its services to agriculture estimated to exceed 200 billion per year (Klein et al. 2007; Gallai et al. 2009; Potts et al. 2010).Honey bee health is therefore a topic that has received considerable attention, especially given reports of dramatic and unexpected colony losses in the last decade ...

    Get Price
  • Publications — Department of Entomology

    Honey bee (Apis mellifera) larval pheromones may regulate gene expression related to foraging task specialization BMC Genomics , Ma, Rong, Rangel, Juliana, Grozinger, Christina M., 2019 Food for thought: Using an evidence-based approach to manage honey bees in light of wild bee declines , Lopez-Uribe, Margarita, 2019

    Get Price
  • Preliminary Assessment of Bumble Bee (Hymenoptera:

    2018-11-29 · Abstract. The Philippines is a biodiversity hotspot and is home to thousands of endemic species, including at least two understudied bumble bee species: Bombus flavescens Smith, 1952 and Bombus irisanensis Cockerell, 1910. Since the 1990s, there have been virtually no studies published on the biology, ecology, and taxonomy of Philippine bumble bees—evidence of the dearth of basic ...

    Get Price
  • American foulbrood in a honeybee colony: spore

    2020-3-6 · The most severe bacterial disease of honeybees is American foulbrood (AFB). The epidemiology of AFB is driven by the extreme spore resilience, the difficulty of bees to remove these spores, and the considerable incidence of undetected spore-producing colonies. The honeybee collective defence mechanisms and their feedback on colony development, which involves a division of labour at …

    Get Price
  • Published Papers - Home - Pusat Pengajian Sains

    2021-5-30 · Stingless-bee (Trigona itama) honey adversely impacts the growth of oral squamous cell carcinoma cell lines (HSC-2). European Journal of Integrative Medicine, 37:101162. (Q4) (WoS-Science Citation Index Expanded). 17) Nur Rasyidah Muhammad, Azlina Ahmad, Siti Norasikin Mohd Nafi, Farizan Ahmad, Zariyantey Abdul Hamid, Sarina Sulong (2020 ...

    Get Price
  • Neonicotinoid Insecticides and Their Impacts on Bees:

    Bee species. The western honey bee Apis mellifera was the most common bee species studied (162 studies) followed by the two bumble bee species Bombus terrestris (24 studies) and Bombus impatiens (10 studies). Between one and six studies were found for each of 15 other bee …

    Get Price
  • Pesticide and resource stressors additively impair wild ...

    2020-9-30 · Disentangling the effects of coupled stressors is a primary challenge for understanding how to promote their populations and ensure robust pollination and other ecosystem services. ... 2013 Wild pollinators enhance fruit set of crops regardless of honey bee abundance. Science 339, ... PLoS …

    Get Price
  • Firm Efficiency and Returns-to-Scale in the Honey Bee ...

    The price of a pound of a honey was obtained through personal communication with the Sue Bee Corporation’s Honey Marketing Division.). Regarding off-farm income, Larsén (2010) found that farmer participation in off-farm employment was associated with a weak increase in technical efficiency of farms in Sweden.

    Get Price
  • Publications — Department of Entomology

    Honey bee (Apis mellifera) larval pheromones may regulate gene expression related to foraging task specialization BMC Genomics , Ma, Rong, Rangel, Juliana, Grozinger, Christina M., 2019 Food for thought: Using an evidence-based approach to manage honey bees in light of wild bee declines , Lopez-Uribe, Margarita, 2019

    Get Price
  • Preliminary Assessment of Bumble Bee (Hymenoptera:

    2018-11-29 · Abstract. The Philippines is a biodiversity hotspot and is home to thousands of endemic species, including at least two understudied bumble bee species: Bombus flavescens Smith, 1952 and Bombus irisanensis Cockerell, 1910. Since the 1990s, there have been virtually no studies published on the biology, ecology, and taxonomy of Philippine bumble bees—evidence of the dearth of basic ...

    Get Price
  • Flowering resources distract pollinators from crops:

    2019-1-4 · 1 INTRODUCTION. Reproductive success for 88% of angiosperms depends on pollination by bees, birds, bats and other animals (Ollerton, Winfree, & Tarrant, 2011).Pollinators also provide a critical ecosystem service, with two-thirds of global crops benefitting from animal-mediated pollination (Klein et al., 2007), including many fruits and seeds that provide nutrients essential for balanced human ...

    Get Price
  • Non-bee insects are important contributors to global

    2016-1-5 · Many of the world’s crops are pollinated by insects, and bees are often assumed to be the most important pollinators. To our knowledge, our study is the first quantitative evaluation of the relative contribution of non-bee pollinators to global pollinator-dependent crops. Across 39 studies we show that insects other than bees are efficient pollinators providing 39% of visits to crop flowers.

    Get Price
  • American foulbrood in a honeybee colony: spore

    2020-3-6 · The most severe bacterial disease of honeybees is American foulbrood (AFB). The epidemiology of AFB is driven by the extreme spore resilience, the difficulty of bees to remove these spores, and the considerable incidence of undetected spore-producing colonies. The honeybee collective defence mechanisms and their feedback on colony development, which involves a division of labour at …

    Get Price
  • Safeguarding pollinators and their values to human

    2016-11-28 · Wild and managed pollinators provide a wide range of benefits to society in terms of contributions to food security, farmer and beekeeper livelihoods, social and cultural values, as …

    Get Price
  • Free Access to Scientific Journals - Open Access Journals

    Open Access journals are the major source of knowledge for young and aspiring generations who are keen in pursuing a career in sciences. This system provides easy access to networks of scientific journals.Authors that contribute their scholarly works to Open Access journals gain remarkable reputation as the research scholarly explore these works extensively.

    Get Price
  • (PDF) Vanbergen IPI FEE | Mark Greco - Academia.edu

    Multiple coinfections over time and space, interacting in complex, non-linear ways, are likely the root cause of pathogeninduced honey bee losses. Many pests and pathogens also spread within and between populations of wild and managed bee species, and perhaps other pollinating insects as well Cameron et al. 2011;Core et al. 2012).

    Get Price
  • Honey bee and native solitary bee foraging behavior

    Authors: María Cecilia Estravis Barcala aff001; Florencia Palottini aff001; Walter Marcelo Farina aff001 Authors place of work: Universidad de Buenos Aires, Facultad de Ciencias

    Get Price
  • (PDF) Vanbergen IPI FEE | Nigel Raine, Edward Feil, M ...

    Cholinergic pesti- Britain. PLoS ONE 5: e9559. cides cause mushroom body neuronal inactivation in honey- vanEngelsdorp D, Hayes J, Underwood RM, et al. 2011. A survey of bees. Nat Commun 4: 1634. managed honey bee colony losses in the USA, fall 2009 to win- …

    Get Price
  • Impacts of Climate Change on the Distributions of ...

    Africanized honey bees in urban environments: ... Different climatic envelopes among invasive populations may lead to underestimations of current and future biological invasions. ... Modeling potential climate change impacts on the trees of the northeastern United States.

    Get Price
  • Honeybee-Specific Lactic Acid Bacterium

    2019-6-17 · Paenibacillus larvae, the causative agent of American foulbrood (AFB), is the primary bacterial pathogen affecting honeybees and beekeeping. The main methods for controlling AFB are incineration of diseased colonies or prophylactic antibiotic treatment (e.g., with tylosin), neither of which is fully satisfactory. The search for superior means for controlling AFB has led to an increased ...

    Get Price
  • Monitoring of SARS‐CoV‐2 infection in mustelids - -

    Acknowledgements: In addition to the listed authors, EFSA and ECDC wish to thank the following: Member State representatives who provided data on SARS-CoV-2 outbreaks and monitoring: Belgium – Brigitte Cay (Sciensano, Unit Enzootic, vector-borne and bee diseases) and Philippe Houdart (Belgian Agency for Safety of the Food Chain, Crisis Management Unit); Denmark – Sten Mortensen and ...

    Get Price
  • Safeguarding pollinators and their values to human

    2016-11-28 · Wild and managed pollinators provide a wide range of benefits to society in terms of contributions to food security, farmer and beekeeper livelihoods, social and cultural values, as …

    Get Price
  • Neonicotinoid Insecticides and Their Impacts on Bees:

    Bee species. The western honey bee Apis mellifera was the most common bee species studied (162 studies) followed by the two bumble bee species Bombus terrestris (24 studies) and Bombus impatiens (10 studies). Between one and six studies were found for each of 15 other bee …

    Get Price
  • Professor Edward Holmes - sydney.edu.au

    Professor Eddie Holmes is known for his work on the evolution and emergence of infectious diseases, particularly the mechanisms by which RNA viruses jump species boundaries to emerge in humans and other animals. He currently holds an ARC Australian Laureate Fellowship. He moved to the University of Sydney in 2012. He h

    Get Price
  • Epigenetics in Insects: Genome Regulation and the ...

    2019-4-30 · Epigenetic inheritance is fundamentally important to cellular differentiation and developmental plasticity. In this review, we provide an introduction to the field of molecular epigenetics in insects. Epigenetic information is passed across cell divisions through the methylation of DNA, the modification of histone proteins, and the activity of noncoding RNAs. Much of our knowledge of insect ...

    Get Price
  • Publications - Home - TissueGnostics

    2021-6-1 · TissueGnostics is the expert in microscope automation, image analysis, cell analysis, tissue analysis and blood analysis and automated digital cell morphology. Our list of products ranges from microscopy workstations to stand alone software for image analysis, cell analysis, tissue analysis and systems that can identify and pre-classify white blood cells for the hematology field.

    Get Price
  • Firm Efficiency and Returns-to-Scale in the Honey Bee ...

    The price of a pound of a honey was obtained through personal communication with the Sue Bee Corporation’s Honey Marketing Division.). Regarding off-farm income, Larsén (2010) found that farmer participation in off-farm employment was associated with a weak increase in technical efficiency of farms in Sweden.

    Get Price
  • Monitoring of SARS‐CoV‐2 infection in mustelids - -

    In Sweden, people associated with mink farms are tested for SARS-CoV-2 on a weekly basis using PCR, followed by serology in a second phase. Sweden has previously reported several23 23 So far only media reports 14 cases, no official public reports available with number of human cases.

    Get Price
  • mSphere Journal Homepage - journals.asm.org

    mSphere is a multidisciplinary open-access journal that publishes high-quality work that makes fundamental contributions to any of the immense range of fields within the microbial sciences. Read and join our community

    Get Price
  • News from the world of beekeeping - Honey Council

    2019-10-31 · The Cornish bee has gone from near extinction to helping save the world. Deformed wing virus genetic diversity in US honey bees complicates search for remedies. Honey bee census must continue, Sen. Schumer says. Want to help pollinators? How’s 500 sound? ‘Rewilding:’ One California man’s mission to save honey bees. Strategies of a ...

    Get Price
  • Shripad Tuljapurkar's Profile | Stanford Profiles

    Shripad Tuljapurkar is part of Stanford Profiles, official site for faculty, postdocs, students and staff information (Expertise, Bio, Research, Publications, and more). The site facilitates research and collaboration in academic endeavors.

    Get Price
  • Profile | Biosciences | University of Exeter

    Research Research interests. I examine the ecology and evolution of infectious disease by (1) building theoretical models and using experimental insect-virus systems to examine the evolutionary dynamics of host defence and parasite virulence, (2) combining models and fieldwork on human tropical disease and (3) developing models to predict the impact and spread of wildlife disease including ...

    Get Price
  • (PDF) Vanbergen IPI FEE | Mark Greco - Academia.edu

    Multiple coinfections over time and space, interacting in complex, non-linear ways, are likely the root cause of pathogeninduced honey bee losses. Many pests and pathogens also spread within and between populations of wild and managed bee species, and perhaps other pollinating insects as well Cameron et al. 2011;Core et al. 2012).

    Get Price
  • Publications - Home - TissueGnostics

    2021-6-1 · TissueGnostics is the expert in microscope automation, image analysis, cell analysis, tissue analysis and blood analysis and automated digital cell morphology. Our list of products ranges from microscopy workstations to stand alone software for image analysis, cell analysis, tissue analysis and systems that can identify and pre-classify white blood cells for the hematology field.

    Get Price
  • Could bees be dying off because of a plant virus?

    2014-1-24 · Could bees be dying off because of a plant virus? Infected pollen could be behind startling decline of insects. U.S. and Chinese scientists have found the tobacco ringspot virus is increasingly ...

    Get Price
  • Contribution of insect pollinators to crop yield and ...

    2014-1-2 · Background. Up to 75% of crop species benefit at least to some degree from animal pollination for fruit or seed set and yield. However, basic information on the level of pollinator dependence and pollinator contribution to yield is lacking for many crops. Even less is known about how insect pollination affects crop quality. Given that habitat loss and agricultural intensification are known to ...

    Get Price