منابع مشابه
Flower choice copying in bumblebees.
We tested a hypothesis originating with Darwin that bees outside the nest exhibit social learning in flower choices. Naive bumblebees, Bombus impatiens, were allowed to observe trained bees or artificial bees forage from orange or green flowers. Subsequently, observers of bees on green flowers landed more often on green flowers than non-observing controls or observers of models on orange flower...
متن کاملThe Overlooked Biodiversity of Flower-Visiting Invertebrates
Estimates suggest that perhaps 40% of all invertebrate species are found in tropical rainforest canopies. Extrapolations of total diversity and food web analyses have been based almost exclusively on species inhabiting the foliage, under the assumption that foliage samples are representative of the entire canopy. We examined the validity of this assumption by comparing the density of invertebra...
متن کاملFlower Colour: How Bumblebees Handle Colours with Perceptually Changing Hues
Colours are floral signals enabling bees to detect, inspect and discriminate flowers in a multitasking world. Behavioural tests now show that trained bumblebees find iridescent coloured targets more quickly and that weak iridescence does not corrupt target identification.
متن کاملGoing native? Flower use by bumblebees in English urban gardens.
BACKGROUND AND AIMS Although urban gardens provide opportunities for pollinators in an otherwise inhospitable environment, most garden plants are not native to the recipient biogeographical region and their value to local pollinators is disputed. This study tested the hypothesis that bumblebees foraging in English urban gardens preferentially visited sympatric Palaearctic-range plants over spec...
متن کاملEocene fossil is earliest evidence of flower-visiting by birds.
Birds are important pollinators, but the evolutionary history of ornithophily (bird pollination) is poorly known. Here, we report a skeleton of the avian taxon Pumiliornis from the middle Eocene of Messel in Germany with preserved stomach contents containing numerous pollen grains of an eudicotyledonous angiosperm. The skeletal morphology of Pumiliornis is in agreement with this bird having bee...
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ژورنال
عنوان ژورنال: Japanese journal of applied entomology and zoology
سال: 1961
ISSN: 0021-4914,1347-6068
DOI: 10.1303/jjaez.5.28