Results 81 to 90 of about 358,208 (344)
Journal of Applied Ecology, 2014 Summary A notable increase in failure of managed European honeybee Apis mellifera L. colonies has been reported in various regions in recent years. Although the underlying causes remain unclear, it is likely that a combination of stressors act together ...
M. Becher +5 more
semanticscholar +1 more source
Color polymorphism in Anemone coronaria: Correlations with soil, climate, and flowering phenology
American Journal of Botany, EarlyView.Abstract Premise Flower color polymorphism (FCP) is thought to be driven by multiple selection agents. Although widely associated with visual attraction of multiple pollinators, FCP is also often correlated with abiotic factors. We explored the links between abiotic conditions, flowering phenology, and FCP in the winter‐flowering geophyte Anemone ...
Tzlil Labin +4 more
wiley +1 more source
Scientia Marina, 2003 A data logger devised and manufactured by our research team in order to study the homing routes of carrier pigeons was subsequently modified to study the homing behaviour and foraging strategies of breeding marine birds.
Juan Salvador Aguilar +4 more
doaj +1 more source
American Journal of Botany, EarlyView.Abstract Premise Evolutionary theory predicts polymorphism should be rare; however, intraspecific variation in floral color is common and can be attributed to genetic drift, plasticity, or variable selection. Examining floral color polymorphism both within contact zones and across a species' range can reveal the mechanisms maintaining this variation ...
Emma Fetterly +6 more
wiley +1 more source
European Journal of Entomology, 2003 In searching both for food to produce eggs and for suitable oviposition sites, females of aphidophagous ladybirds must be adapted to exploit prey that vary greatly in their occurrence and abundance over both space and time.
Edward W. EVANS
doaj +1 more source
American Journal of Botany, EarlyView.Abstract Premise Pollination by beetles is relatively rare in orchids, and this has been attributed to the clumsy behavior of beetles being unsuitable for the precise pollen transfer mechanisms that characterize the orchid family. We investigated floral specialization for beetle pollination in the rare fire‐dependent South African orchid Disa elegans ...
Steven D. Johnson +3 more
wiley +1 more source
Anterior Cingulate Engagement in a Foraging Context Reflects Choice Difficulty, Not Foraging Value
Nature Neuroscience, 2014 Previous theories predict that human dorsal anterior cingulate (dACC) should respond to decision difficulty. An alternative theory has been recently advanced that proposes that dACC evolved to represent the value of 'non-default', foraging behavior ...
A. Shenhav +3 more
semanticscholar +1 more source
Growth Standards for Children With Smith–Magenis Syndrome (SMS)
American Journal of Medical Genetics Part A, EarlyView.ABSTRACT Smith–Magenis syndrome (SMS, OMIM 182290) is a complex syndromic diagnosis marked by neurobehavioral differences and distinct facial dysmorphisms, caused by haploinsufficiency of the retinoic acid‐1 (RAI1) gene either by a pathogenic sequence variant or deletion at chromosome 17p11.2 involving a portion or all of this gene.
Julie Hoover‐Fong +10 more
wiley +1 more source
Frontiers in Neuroscience, 2013 Foraging typically involves two distinct phases, an exploration phase where an organism explores its local environment in search of needed resources and an exploitation phase where a discovered resource is consumed.
Barak Francisco Caracheo +5 more
doaj +1 more source
Frontiers in Physiology, 2013 Throughout evolution the foraging and echolocation behaviors as well as the motor systems of bats have been adapted to the tasks they have to perform while searching and acquiring food.
A. Denzinger, H. Schnitzler
semanticscholar +1 more source