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Hybrid incompatibility occurs when the offspring of two closely related species are not viable or suffer from infertility. Charles Darwin posited that hybrid incompatibility is not a product of natural selection, stating that the phenomenon is an outcome of the hybridizing species diverging, rather than something that is directly acted upon by selective pressures. [4]
A bee orchid, Ophrys, mimics a female bee as a false reward. Most zoophilous monocots produce nectar as a reward and this nectar is alike to nectar of dicots. [1] [19] [20] [21] Carpellary septal nectaries are common and unique to monocots. Nonseptal nectaries are most often epithelial and positioned on the perigonal nectaries of tepals when ...
Nuptial flight is an important phase in the reproduction of most ant, termite, and some bee species. [1] It is also observed in some fly species, such as Rhamphomyia longicauda. During the flight, virgin queens mate with males and then land to start a new colony, or, in the case of honey bees, continue the succession of an existing hived colony.
Swarming is a honey bee colony's natural means of reproduction.In the process of swarming, a single colony splits into two or more distinct colonies. [1]Swarming is mainly a spring phenomenon, usually within a two- or three-week period depending on the locale, but occasional swarms can happen throughout the producing season.
However, despite the shortcomings of the haplodiploidy hypothesis, it is still considered to have some importance. For example, many bees have female-biased sex ratios and/or invest less in or kill males. Analysis has shown that in Hymenoptera, the ancestral female was monogamous in each of the eight independent cases where eusociality evolved. [2]
Andrena scotica is one of the earlier bees to appear and the flight period is mid March to late June with numbers peaking late April and May. The females are facultative communal nesters with a group of them sharing a common entrance to a burrow in which each female tends her own eggs and larvae within a chamber off the main burrow, constructing brood cells within her tunnel and provisioning ...
Halictidae is the second-largest family of bees [1] (clade Anthophila) with nearly 4,500 species. [2] They are commonly called sweat bees (especially the smaller species), as they are often attracted to perspiration. [3] [4] Halictid species are an extremely diverse group that can vary greatly in appearance.
A. J. Cook author of The Bee-Keepers' Guide; or Manual of the Apiary, 1876. [47] Dr. C.C. Miller was one of the first entrepreneurs to make a living from apiculture. By 1878, he made beekeeping his sole business activity. His book, Fifty Years Among the Bees, remains a classic and his influence on bee management persists into the 21st century. [48]