Foraging Patterns of Halictid Bees at Flowers of Convolvulus Arvensis
نویسندگان
چکیده
منابع مشابه
Tropane alkaloids and toxicity of Convolvulus arvensis.
Horses in a few, localized northern Colorado pastures exhibited weight loss and colic. At post mortem, intestinal fibrosis and vascular sclerosis of the small intestine was identified. The pastures where the affected horses grazed were overrun by field bindweed (Convolvulus arvensis). Bindweed from the pasture was found to contain the tropane alkaloids tropine, pseudotropine, and tropinone and ...
متن کاملRecent and simultaneous origins of eusociality in halictid bees.
Eusocial organisms are characterized by cooperative brood care, generation overlap and reproductive division of labour. Traits associated with eusociality are most developed in ants, termites, paper wasps and corbiculate bees; the fossil record indicates that each of these advanced eusocial taxa evolved in the Late Cretaceous or earlier (greater than 65 Myr ago). Halictid bees also include a la...
متن کاملEect of the pre-emergence bioherbicide Phomopsis convolvulus on seedling and established plant growth of Convolvulus arvensis
The eects of the fungal pathogen Phomopsis convolvulus Ormeno on seedling and established plant performance of Convolvulus arvensis L. were compared under both controlled and ®eld conditions. Under a controlled environment, a granular barley formulation of the fungal inoculum that had been applied on to the soil surface of pots containing pre-germinated C. arvensis seeds resulted in above-grou...
متن کاملVarroa destructor Mites Can Nimbly Climb from Flowers onto Foraging Honey Bees
Varroa destructor, the introduced parasite of European honey bees associated with massive colony deaths, spreads readily through populations of honey bee colonies, both managed colonies living crowded together in apiaries and wild colonies living widely dispersed in natural settings. Mites are hypothesized to spread between most managed colonies via phoretically riding forager bees when they en...
متن کاملConical Epidermal Cells Allow Bees to Grip Flowers and Increase Foraging Efficiency
The plant surface is by default flat, and development away from this default is thought to have some function of evolutionary advantage. Although the functions of many plant epidermal cells have been described, the function of conical epidermal cells, a defining feature of petals in the majority of insect-pollinated flowers, has not. The location and frequency of conical cells have led to specu...
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ژورنال
عنوان ژورنال: Psyche: A Journal of Entomology
سال: 1976
ISSN: 0033-2615,1687-7438
DOI: 10.1155/1976/45208