منابع مشابه
Sensory Mechanisms Related to Homing in Pigeons
Besides having a well-developed vestibular system, pigeons possess a gravity and inertia sensitive system mediated by displacement of the viscera, presumed to stimulate mesenteric mechanoreceptors. Classical conditioning experiments confirm a sensitivity to atmospheric pressure changes. Failure to demonstrate a magnetic field orientation sensitivity in an instrumental conditioning situation is ...
متن کاملLoss of Schooling Behavior in Cavefish through Sight-Dependent and Sight-Independent Mechanisms
BACKGROUND Surface populations of Astyanax mexicanus, living in rivers like their common ancestors, school, while several, independently derived cave populations of the same species have lost schooling behavior. RESULTS We quantify schooling behavior in individual A. mexicanus and identify quantitative trait loci (QTL) for this trait. We find that the evolutionary modulation of schooling has ...
متن کاملHoming Pigeons Respond to Time-Compensated Solar Cues Even in Sight of the Loft
The sun has long been thought to guide bird navigation as the second step in a two-stage process, in which determining position using a map is followed by course setting using a compass, both over unfamiliar and familiar terrain. The animal's endogenous clock time-compensates the solar compass for the sun's apparent movement throughout the day, and this allows predictable deflections in orienta...
متن کاملPathological Mechanisms of Skin Homing T Cells in Atopic Dermatitis
Skin infiltration of circulating memory T cells with cutaneous tropism is considered one of the pathologic mechanisms in atopic dermatitis (AD). Skin-seeking circulating T lymphocytes can be identified by their expression of the cutaneous lymphocyte-associated antigen on the cell surface. Recent studies have contributed useful new information about the function and recirculation properties of t...
متن کاملBehavioral and Neural Mechanisms of Homing and Migration in Birds
The extraordinary navigational ability of birds has fascinated natural historians for as long as animal behavior has been of interest. Successful navigation in birds is based first on an ability to determine directions in space (compass sense), relying on the sun, stars and earth's magnetic field. This compass sense promotes the development of an ability to determine relative location in space ...
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ژورنال
عنوان ژورنال: Nature
سال: 1993
ISSN: 0028-0836,1476-4687
DOI: 10.1038/363112a0