Post-invasion selection acts on standing genetic variation despite a severe founding bottleneck.

Invasive populations often have lower genetic diversity relative to the native-range populations from which they derive. Despite this, many biological invaders succeed in their new environments, in part due to rapid adaptation. Therefore, the role of genetic bottlenecks in constraining the adaptation of invaders is debated.

Genetic Relationships and Signatures of Adaptation to the Climatic Conditions in Populations of Based on the Polymorphism of the Gene Vitellogenin.

Apis cerana and Apis mellifera are important honey bee species in Asia. A. cerana populations are distributed from a cold, sharply continental climate in the north to a hot, subtropical climate in the south.

Biomonitoring via DNA metabarcoding and light microscopy of bee pollen in rainforest transformation landscapes of Sumatra.

Background: Intense conversion of tropical forests into agricultural systems contributes to habitat loss and the decline of ecosystem functions. Plant-pollinator interactions buffer the process of forest fragmentation, ensuring gene flow across isolated patches of forests by pollen transfer. In this study, we identified the composition of pollen grains stored in pot-pollen of stingless bees, Tetragonula laeviceps, via dual-locus DNA metabarcoding (ITS2 and rbcL) and light microscopy, and compared the taxonomic coverage of pollen sampled in distinct land-use systems categorized in four levels of management intensity (forest, shrub, rubber, and oil palm) for landscape characterization.

Improved Apis mellifera reference genome based on the alternative long-read-based assemblies.

Apis mellifera L., the western honey bee is a major crop pollinator that plays a key role in beekeeping and serves as an important model organism in social behavior studies. Recent efforts have improved on the quality of the honey bee reference genome and developed a chromosome-level assembly of 16 chromosomes, two of which are gapless.

The Effects of stingless bee () honey on streptozotocin-induced diabetes mellitus in rats.

Diabetes mellitus (DM) is a metabolic disease characterised by chronic hyperglycaemia with impaired carbohydrate, fat and protein metabolism caused by defects in insulin secretion or action. Based on our previous research, stingless bee honey (SLBH) from and can inhibit alpha-glucosidase activities. Therefore, the aim of the present study was to determine the effects of daily oral administration of SLBH on body weight (BW) and fasting blood glucose (FBG) levels of male rats with streptozotocin (STZ)-induced DM.

The and Genes in and : Exon Intron Organisation and Evolution.

Genes related to carbohydrate metabolism have evolved rapidly in eusocial bees, including honey bees. However, the characterisation of carbohydrate metabolism genes has not been reported in or . This study aimed to characterise (PFK) and (PK) genes in these honey bee species and to analyse the evolution of the genus using these genes.

Phylogenetic analysis of honey bee behavioral evolution.

DNA sequences from three mitochondrial (rrnL, cox2, nad2) and one nuclear gene (itpr) from all 9 known honey bee species (Apis), a 10th possible species, Apis dorsata binghami, and three outgroup species (Bombus terrestris, Melipona bicolor and Trigona fimbriata) were used to infer Apis phylogenetic relationships using Bayesian analysis. The dwarf honey bees were confirmed as basal, and the giant and cavity-nesting species to be monophyletic. All nodes were strongly supported except that grouping Apis cerana with A.