نتایج جستجو برای: appis mellifera

تعداد نتایج: 6090  

Journal: :Journal of theoretical biology 2010
Tobias Galla

In a recent paper List, Elsholtz and Seeley (List et al., 2009) have devised an agent-based model of the nest-choice dynamics in swarms of honeybees, and have concluded that both interdependence and independence are needed for the bees to reach a consensus on the best nest site. We here present a simplified version of the model which can be treated analytically with the tools of statistical phy...

Journal: :The Journal of experimental biology 2007
Andrew M Reynolds Alan D Smith Don R Reynolds Norman L Carreck Juliet L Osborne

The foraging strategies used by animals are key to their success in spatially and temporally heterogeneous environments. We hypothesise that when a food source at a known location ceases to be available, flying insects will exhibit search patterns that optimise the rediscovery of such resources. In order to study these searching patterns, foraging honeybees were trained to an artificial feeder ...

2013
F. A. Tomás-Barberán F. Ferreres F. Tomás-Lorente A. Ortiz

The flavonoids present in beeswax produced in “La Alcarria” region were analyzed by HPLC. Pinocembrin, pinobanksin, pinobanksin 3-acetate, chrysin, galangin and techtochrysin were detected as the main flavonoid constituents. This is the first detailed report on the flavonoids o f beeswax. These substances are already present when wax scales are secreted by bees. The same flavonoid compounds wer...

Journal: :Annual review of entomology 2004
Stanley Scott Schneider Gloria DeGrandi-Hoffman Deborah Roan Smith

The African honey bee subspecies Apis mellifera scutellata has colonized much of the Americas in less than 50 years and has largely replaced European bees throughout its range in the New World. The African bee therefore provides an excellent opportunity to examine the factors that influence invasion success. We provide a synthesis of recent research on the African bee, concentrating on its abil...

Journal: :Current Biology 2013
David D. Lent Paul Graham Thomas S. Collett

Ants, like honeybees, can set their travel direction along foraging routes using just the surrounding visual panorama. This ability gives us a way to explore how visual scenes are perceived. By training wood ants to follow a path in an artificial scene and then examining their path within transformed scenes, we identify several perceptual operations that contribute to the ants' choice of direct...

Journal: :Current Biology 2014
Michael Gross

Systemic pesticides, including the widely used neonicotinoids, have been linked to colony losses in honeybees and declines in other pollinator species. More recently, evidence has accumulated suggesting that their widespread, often prophylactic use is harming important parts of soil and water ecosystems, putting biodiversity and ecosystem services at risk. Michael Gross reports. Systemic pestic...

Journal: :Trends in cognitive sciences 2003
James R Pomerantz

A key issue for theories of perception is specifying the primitives used by the visual system to isolate and identify the objects in an image. Although local features are typically suggested, there is good reason to look for global, configural features as primitives too. Chen et al.'s specific proposal of topological features is both explicit and capable of capturing important global informatio...

Journal: :Trends in cognitive sciences 2001
R Menzel M Giurfa

Honeybees have small brains, but their behavioural repertoire is impressive. In this article we focus on the extent to which adaptive behaviour in honeybees exceeds elementary forms of learning. We use the concept of modularity of cognitive functions to characterize levels of complexity in the honeybee brain. We show that behavioural complexity in the honeybee cannot be explained by independent...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2014
Rodrigo Zaluski Samir Moura Kadri Edison Antonio de Souza Valdinei Moraes Campanucci da Silva Juliane Reis Campanucci da Silva Patricia Rodrigues-Orsi Ricardo de Oliveira Orsi

INTRODUCTION This study aimed to investigate the occurrence of Africanized honeybees in Botucatu, São Paulo, Brazil, and to implement a program to remove such swarms. METHODS The occurrences of Africanized honeybee swarms between 2010 and 2012 were studied and strategies to prevent accidents were developed. RESULTS We noted 1,164 cases of Africanized honeybee occurrences in the city, and 42...

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