Christian W W Pirk

Summary

Affiliation: University of Pretoria
Country: South Africa

Publications

  1. pmc Field evaluation of natural human odours and the biogent-synthetic lure in trapping Aedes aegypti, vector of dengue and chikungunya viruses in Kenya
    Eunice A Owino
    International Centre of Insect Physiology and Ecology, P, O BOX 30772 00100, Nairobi, Kenya
    Parasit Vectors 7:451. 2014
  2. doi request reprint Economics of comb wax salvage by the red dwarf honeybee, Apis florea
    Christian W W Pirk
    Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002, South Africa
    J Comp Physiol B 181:353-9. 2011
  3. pmc Honeybees prefer warmer nectar and less viscous nectar, regardless of sugar concentration
    Susan W Nicolson
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    Proc Biol Sci 280:20131597. 2013
  4. doi request reprint Simultaneous stressors: interactive effects of an immune challenge and dietary toxin can be detrimental to honeybees
    Angela Kohler
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Insect Physiol 58:918-23. 2012
  5. doi request reprint Impact of Varroa destructor on honeybee (Apis mellifera scutellata) colony development in South Africa
    Ursula Strauss
    Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South Africa
    Exp Appl Acarol 65:89-106. 2015
  6. doi request reprint Seasonal prevalence of pathogens and parasites in the savannah honeybee (Apis mellifera scutellata)
    Ursula Strauss
    Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Invertebr Pathol 114:45-52. 2013
  7. doi request reprint Honeybees and nectar nicotine: deterrence and reduced survival versus potential health benefits
    Angela Kohler
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Insect Physiol 58:286-92. 2012
  8. doi request reprint Antioxidant supplementation can reduce the survival costs of excess amino acid intake in honeybees
    C Ruth Archer
    Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
    J Insect Physiol 71:78-86. 2014
  9. doi request reprint Convergence of carbohydrate-biased intake targets in caged worker honeybees fed different protein sources
    Solomon Z Altaye
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Exp Biol 213:3311-8. 2010
  10. pmc Olfactory detection of prey by the termite-raiding antPachycondyla analis
    Abdullahi Ahmed Yusuf
    Social Insects Research Group, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028 Pretoria, Republic of South Africa icipe, P O Box 30772 00100 GPO Nairobi, Kenya
    J Insect Sci 14:53. 2014

Collaborators

Detail Information

Publications11

  1. pmc Field evaluation of natural human odours and the biogent-synthetic lure in trapping Aedes aegypti, vector of dengue and chikungunya viruses in Kenya
    Eunice A Owino
    International Centre of Insect Physiology and Ecology, P, O BOX 30772 00100, Nairobi, Kenya
    Parasit Vectors 7:451. 2014
    ..aegypti in two different endemic areas of chikungunya and dengue in Kenya - Kilifi and Busia Counties. The chemistry of the volatiles released from human odours and the Biogent (BG)-commercial lure were also compared...
  2. doi request reprint Economics of comb wax salvage by the red dwarf honeybee, Apis florea
    Christian W W Pirk
    Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Pretoria, 0002, South Africa
    J Comp Physiol B 181:353-9. 2011
    ..florea only salvages wax from the old nest if the new nesting site is less than 100-200 m away-energetically, it pays off to recycle...
  3. pmc Honeybees prefer warmer nectar and less viscous nectar, regardless of sugar concentration
    Susan W Nicolson
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    Proc Biol Sci 280:20131597. 2013
    ..Bees may benefit from foraging on nectars that are warmer than air temperature for two reasons that are not mutually exclusive: reduced thermoregulatory costs and faster ingestion times due to the lower viscosity. ..
  4. doi request reprint Simultaneous stressors: interactive effects of an immune challenge and dietary toxin can be detrimental to honeybees
    Angela Kohler
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Insect Physiol 58:918-23. 2012
    ..coli LPS and nicotine, indicating that interactive effects of simultaneous pathogen exposure and dietary toxin are detrimental to honeybee fitness...
  5. doi request reprint Impact of Varroa destructor on honeybee (Apis mellifera scutellata) colony development in South Africa
    Ursula Strauss
    Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield, Pretoria, 0028, South Africa
    Exp Appl Acarol 65:89-106. 2015
    ..Varroa mites appeared to have a low impact on this honeybee population, given that colony development was similar in the treated and untreated colonies. ..
  6. doi request reprint Seasonal prevalence of pathogens and parasites in the savannah honeybee (Apis mellifera scutellata)
    Ursula Strauss
    Social Insect Research Group, Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Invertebr Pathol 114:45-52. 2013
    ..All of the honeybee parasites were found in the majority of the apiaries with the most common parasite being the Varroa mite. In spite of hosting few pathogens, yet most parasites, A. m. scutellata colonies appeared to be healthy. ..
  7. doi request reprint Honeybees and nectar nicotine: deterrence and reduced survival versus potential health benefits
    Angela Kohler
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Insect Physiol 58:286-92. 2012
    ..However, high nicotine concentrations may have a detrimental effect on colony fitness...
  8. doi request reprint Antioxidant supplementation can reduce the survival costs of excess amino acid intake in honeybees
    C Ruth Archer
    Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
    J Insect Physiol 71:78-86. 2014
    ..However, that EGCG had no effect on survival in bees fed high EAA diets suggests that there are other physiological costs of over-consuming EAAs in honeybees...
  9. doi request reprint Convergence of carbohydrate-biased intake targets in caged worker honeybees fed different protein sources
    Solomon Z Altaye
    Department of Zoology and Entomology, University of Pretoria, Pretoria 0002, South Africa
    J Exp Biol 213:3311-8. 2010
    ..Nutrient intake of broodless workers is directly related to their own physiological requirements, and the strong carbohydrate bias may reflect the high metabolic rate of honeybees even under resting conditions...
  10. pmc Olfactory detection of prey by the termite-raiding antPachycondyla analis
    Abdullahi Ahmed Yusuf
    Social Insects Research Group, Department of Zoology and Entomology, University of Pretoria, Private Bag X20, Hatfield 0028 Pretoria, Republic of South Africa icipe, P O Box 30772 00100 GPO Nairobi, Kenya
    J Insect Sci 14:53. 2014
    ..Naphthalene, previously identified as an insect repellent, was also identified as a component of the odors from the gallery soil. These results demonstrate that odors play an important role in prey detection by P. analis. ..
  11. pmc Self assessment in insects: honeybee queens know their own strength
    Vincent Dietemann
    Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
    PLoS ONE 3:e1412. 2008
    ..Our results further indicate that self-assessment, but not mutual assessment of fighting ability occurs prior to and during the agonistic encounters...