Results 1 to 10 of about 194,299 (398)
Gyne production is regulated by the brood in a social bee (Bombus impatiens) [PDF]
Royal Society Open ScienceSexual production in social insects marks the peak of colony development, yet the mechanisms regulating it remain unclear. We investigated the role of brood in colony development, worker reproduction and sexual production in Bombus impatiens.
Etya Amsalem +3 more
doaj +2 more sources
Scientia Marina, 2023 The morphology of larvae is a key factor influencing their behaviour, performance and ultimately their survival. There is evidence indicating a significant morphological variability among broods, and that this may be related to the size or conditions of
José M. Landeira +3 more
doaj +1 more source
Veterinary Medicine and Science, 2022 Background Honeybee colonies differ in performance due to variations in their traits in terms of production, productivity and behaviour. The objective of this study was to identify and evaluate the performance of honey bee race at their geographical ...
Esubalew Shitaneh +3 more
doaj +1 more source
Sociobiology, 2023 In most ant species, workers have retained functional ovaries, allowing them to potentially lay viable unfertilized eggs that develop into males. Mechanisms (ex.: queen and/or worker policing) have nevertheless evolved to control worker reproduction ...
Rachid Hamidi +2 more
doaj +1 more source
Agriculture, 2022 American Foulbrood (AFB) is a major endemic disease affecting the bee brood and the absence of chemical therapeutic treatments leads beekeepers to develop alternative management plans, based mainly on the prevention and accurate diagnosis of symptoms ...
Vasilios Liolios +3 more
doaj +1 more source
EFFECT OF VITAMIN ADDITIVE AND COLONY MAN-AGEMENT ON HONEY BEE PERFORMANCE [PDF]
Arab Universities Journal of Agricultural Sciences, 2006 The effect of both beekeeping processes (compressed bees Cb and traditional beekeeping Tb) and food diets (vitamins mixed with pollen grains, pollen grains only and plain sugar syrup) on the colony build up were studied during February – April, 2004, at ...
A.M. Elbassiouny
doaj +1 more source
Review of the methods to determine the hazard and toxicity of pesticides to bumblebees [PDF]
, 2001 Methods to determine the impact of pesticides on bumblebees are described. They are classified into laboratory tests to determine the acute toxicity and the hazard to bumblebees, (semi) field tests, and brood tests.
Steen, J.J.M., van der
core +5 more sources
Factors Affecting Abundance of Adult Karner Blues (\u3ci\u3eLycaeides Melissa Samuelis\u3c/i\u3e) (Lepidoptera: Lycaenidae) in Wisconsin Surveys 1987-95 [PDF]
, 2017 At 141 pine-oak barrens in central and northwestern Wisconsin, 3,702 Karner blues (Lycaeides melissa samuelis Nabokov) were found in 81.1 hr of transect surveys during spring and 6,094 individuals in 116.6 hr during summer.
Swengel, Ann B, Swengel, Scott R
core +2 more sources
The Development of the Brooding Scale [PDF]
Psychiatry Investigation, 2019 The purpose of this study was to develop a Brooding Scale (BS) and to confirm its psychometric properties.A preliminary questionnaire was developed based on a literature review and face-to-face interviews with healthy subjects. To evaluate reliability and construct validity, a 15-item BS was administered to 124 healthy subjects. Convergent validity was
Yanhong Piao +6 more
openaire +2 more sources
Brood hiding test: a new bioassay for behavioral and neuroethological ant research
Sociobiology, 2014 We describe a new bioassay for behavioral and neuroethological ant research, the brood hiding test. A group of adult ants is taken out of the nest, confined together with brood and exposed to strong light. Ants may interact with brood, and, in particular,
Anna Szczuka +4 more
doaj +1 more source