In honeybees (or honey bees),sexis normally determined by thefertilizationor non-fertilization of eggs, rather than the presence or absence ofsex chromosomes. This mode ofsex determinationwas first discovered by Johann Dzierzon, a Catholic priest, in 1845. Dzierzon reported that a virgin queen...
byQueen Mary, University of London Male bumblebees -- once thought to be good for just sex -- are actually just as smart as female worker bees. Credit: Queen Mary University of London (QMUL) Male bumblebees are just as smart as female worker bees despite their dim-witted reputation, ac...
The life cycle of a blister beetle is not only fascinating, it may be shedding new light on how new species form.
In addition, behaviour studies with male cephalic extracts were also conducted in Scaptotrigona bipunctata and Partamona cupira. Males and female worker bees showed differences in the content of the mandibular glands, which are responsible for alarm communication in meliponines. Males never attacked ...
Semen that impairs a female’s eyesight is one weapon in the sexual arms race between male honeybees and queens. Twitter Facebook Email A male honeybee mates with a queen in mid-air. The semen that a male transfers to a female degrades her vision — and with it her ability to mate ...
Mammals and birds usually have male-biased size dimorphism, probably because of strong sexual competition among males. Invertebrates usually have female-biased size dimorphism, perhaps because their inflexible exoskeletons limit ovary size, leading to a strong correlation between female body size and ...
Here we test this hypothesis using adult male (drone) and female (worker) honey bees (Apis mellifera), inoculated with the gut endoparasite Nosema ceranae and/or black queen cell virus (BQCV). These pathogens were chosen due to previously reported synergistic interactions between Nosema apis ...
Finally, fem also controls the splicing of Am-doublesex transcripts encoding conserved male- and female-specific transcription factors involved in sexual differentiation. Our findings reveal how the sex determination process is realized in honeybees differing from Drosophila melanogaster. 展开 ...
the social exclusion clauses—there was no difference among male and female volunteers in the number of times they chose to form an alliance with another player. However, when the exclusionary instructions were used, female participants chose the alliance option more often than did male volunteers....
Since drones and workers are similar in size, it’s easier to identify male and female carpenter bees by their faces. This carpenter bee image shows the black face of a drone. If this were a worker, the entire head would be yellow. Bumble Bees A bumble bee pictured in flight Bumble bee...