Apidologie

https://www.apidologie.org/

List of Papers (Total 1,768)

Predictive modelling of honey bee foraging activity using local weather conditions

We investigated the connection between foraging activity of honey bees (Apis mellifera) and local weather conditions. We measured bee egress rate along with temperature, solar radiation, atmospheric pressure, humidity, rainfall, wind direction and speed. Data was collected from two hives, over the periods June–September 2013 (hive 1) and July–September 2014 (hive 2). We fitted an...

Body size and wing asymmetry in bees along an urbanization gradient

The global loss of bee diversity and abundance is a central issue in conservation biology. There is increasing evidence that cities may play an important role in bee conservation, although urbanization may also have negative impacts. Here, we investigate individual body size variation and wing asymmetry (based on 11 traits) in the solitary bee Anthophora plumipes along a rural...

Effect of the own colony odor on olfactory and thermal preferences of the honeybee (Apis mellifera) workers

Honeybee foragers were tested on their preference for the own colony odor either separately, in an olfactometer, or in combination with their temperature preference, in thermal gradient chambers, where their motor activity was also recorded. The bees in the gradient chambers were either deprived of their colony odor for 9 days or exposed to the odor during the experimental days 4...

RNA-Seq reveals that mitochondrial genes and long non-coding RNAs may play important roles in the bivoltine generations of the non-social Neotropical bee Tetrapedia diversipes

In animals, voltinism is a result of evolutionary adaptations to environmental conditions. These evolutionary adaptations may profoundly affect the population structure and social organization level. To study the bivoltinism of the solitary bee Tetrapedia diversipes, we performed comparative transcriptomics analyses of foundresses and larvae from the two reproductive generations...

The ontogenetic saga of a social brain

Queen and worker honeybees differ in a number of life-history traits, including the size of certain brain regions, such as the mushroom bodies (MBs), which are larger in workers. However, during the larval period, the differential feeding offered to queens promotes faster brain development. As a result, members of this caste have larger brains than workers. This developmental...

Computer software for identification of honey bee subspecies and evolutionary lineages

Within the western honey bee (Apis mellifera), there are more than 20 recognised subspecies. It is well known that these subspecies differ in their wing venation patterns. However, there is a demand for efficient tools to identify honey bee subspecies, ecotypes, populations or hybrids. The aim of this study was to develop a fast and easy identification method based on analysing...

Reproduction of rebel workers in honeybee (Apis mellifera) colonies

The honeybee is one of several eusocial species in which the queen is typically the only reproductive member of the colony; worker reproduction is mostly restricted to queenless colonies. Because workers cannot mate, they lay unfertilized eggs, which develop into males. A recent study showed that in queenless colonies, which arise after swarming, worker larvae develop into rebel...

Protecting a managed bee pollinator against climate change: strategies for an area with extreme climatic conditions and socioeconomic vulnerability

In the semiarid region of Northeastern Brazil, populations of native bees can be jeopardized by future climate change. The present study aims to analyze the impact of climate change on a native stingless bee (Melipona subnitida Ducke). This species is a locally important pollinator of wild and crop plants, also exploited for honey production by regional beekeepers. Using species...

Life-history traits of wild honey bee colonies living in forests around Ithaca, NY, USA

Wild honey bee colonies—both truly wild (in trees and buildings) and simulated wild (in small hives)—were studied to determine their life-history traits, to see if these traits have changed now that these colonies are infested with Varroa destructor. Most colonies (97%) survive summers, but only 23% of founder (first-year) colonies and 84% of established colonies survive winters...

Managed honeybee colony losses of the Eastern honeybee (Apis cerana) in China (2011–2014)

Colony losses of managed honeybees have raised a major concern, and surveys of colony losses were conducted around the globe to understand the apicultural situation. Up to now, most studies have focused on the mortality of the Western honeybee (Apis mellifera); however, little is known about the mortality of its eastern counterpart—the Eastern honeybee (Apis cerana). Here, we...

Internal hive temperature as a means of monitoring honey bee colony health in a migratory beekeeping operation before and during winter

Internal temperatures of honey bee hives kept at different sites in North Dakota were monitored before and during winter to evaluate the effects of treatment, in the form of exposure to commercial pollination, and location on colony health. In October, hives exposed to commercial pollination during the summer had fewer adult bees and less brood than hives kept near natural forage...

Toxicity of thiametoxam on in vitro reared honey bee brood

Pesticides are a possible cause of pollinator decline and honey bee colony losses experienced in several countries in recent years. In the past years, many north-west Italian beekeepers reported the presence of dead brood in field apiaries during neonicotinoid-coated maize sowing; therefore, a possible role of these insecticides was suspected. The objective of this study was to...

Molecular cloning, expression and oxidative stress response of the vitellogenin Gene (AccVg) from Apis cerana cerana

Vitellogenin (Vg) is a yolk precursor protein in most oviparous females. However, Vg has not been studied in the Apis cerana cerana. In this work, the Vg gene of the A. cerana cerana has been cloned and sequenced. The gene codes for a protein consisting of 1770 amino acids in seven exons with a predicted molecular mass and isoelectric point of 200 kDa and 6.46, respectively...

Forest reserves and riparian corridors help maintain orchid bee (Hymenoptera: Euglossini) communities in oil palm plantations in Brazil

Orchid bees (Apidae, Euglossini) are important pollinators in the Amazon forest. In eastern Brazilian Amazon, secondary forest and pastures are being replaced by oil palm plantations. Here, we tested the role of forest reserves and riparian corridors in maintaining orchid bees. We sampled bees in three different soil-type uses, comparing richness, abundance, and assemblage...

Leaf foraging sources of leafcutter bees in a tropical environment: implications for conservation

Leafcutter bees collect leaf discs to encase brood cells. However, our understanding of their use of plants as nesting resources, which is critical for their conservation, is poor. We followed plants and observed bees cutting leaves to understand the leaf and plant traits of the leaf forage plants of Megachile spp. We studied whether the leaf size explains the cut size and the...

Hygienic behavior in Melipona quadrifasciata anthidioides (Apidae, Meliponini)

Hygienic behavior in stingless bees is a trait of workers that confers colony-level resistance against some brood diseases. Workers of hygienic colonies detect, uncap and remove dead or diseased brood from the nest cells. We examined the hygienic behavior in stingless bees (Melipona quadrifasciata anthidioides) from freeze-killed brood assay using liquid nitrogen. Responses were...

In vitro study of the antimicrobial activity of European propolis against Paenibacillus larvae

Typical European propolis is an antibiotic substance derived from the resin of poplar, birch, and aspen buds. Here, we tested the ability of propolis originating from the resins of these plants to inhibit the in vitro growth of Paenibacillus larvae, the organism that causes American foulbrood, a fatal honeybee larval disease. The study involved GC-MS analysis of extracts from...

Influence of different pollen diets on the development of hypopharyngeal glands and size of acid gland sacs in caged honey bees (Apis mellifera)

We examined the consumption rate of protein diets in caged and free-flying honey bees, amino acid composition of diets, and diet effects on gland development. The effect of seven different diets (sugar solution only, Feedbee®, Helianthus pollen, Sinapis pollen, Asparagus pollen, Castanea pollen, and mixed pollen diet) on the development of the hypopharyngeal (HPG) and acid glands...

Honey bee gut microbial communities are robust to the fungicide Pristine® consumed in pollen

Honey bees that consume pollen with sublethal levels of the fungicide Pristine® can have reduced pollen digestion, lower ATP synthesis, and in many ways resemble malnourished bees. Reduced nutrient acquisition in bees exposed to Pristine® might be due to the effects of this fungicide on the composition of gut microbial communities. Two experiments were conducted in two separate...

Predictive systems models can help elucidate bee declines driven by multiple combined stressors

Bee declines are driven by multiple combined stresses, making it exceedingly difficult to identify experimentally the most critical threats to bees and their pollination services. We highlight here the too often ignored potential of mechanistic models in identifying critical stress combinations. Advanced bee models are now available as open access tools and offer an unprecedented...