...Tijana Canic; Juan Lopez; Natalie Ortiz-Vega; R. Grace Zhai; Sheyum Syed ABSTRACT Drosophila ’s innate response to gravity, geotaxis, has been used to assess the impact of aging and disease on motor performance. Despite its rich history, fly geotaxis continues to be largely measured manually...

... 2012 20 12 2012 © 2013. 2013 graviperception geotaxis phoresy nictation waving Gravity is a constant stimulus for life on Earth. Most organisms, including animals, are able to sense the gravitational force and their behavior is influenced by gravity. Although nematodes...

...) by deflection in the same direction, depending on the sign of ctenophore geotaxis (positive or negative). The beat frequency of many cilia is controlled by concentrations of Ca 2+ , membrane potential and neural input. How these factors affect deflection-induced ciliary beating in balancers was investigated...

..., resulting in a dense accumulation of larvae at the top of the chamber ( Fig. 1C ). Pattern swimming (or bioconvection), often reported from other organisms capable of negative geotaxis, did not occur under our experimental conditions. However, it was often observed when the population density of larvae...

...T. Fenchel; B. J. Finlay ABSTRACT Geotaxis is demonstrated in the ciliated protozoon Loxodes . This behaviour is mediated by a mechanoreceptor which is probably the Müller body, an organelle characteristic of loxodid ciliates. The geotactic response is sensitive to dissolved oxygen tension...