negative gravitaxis

Abstract Parasites often use external cues to identify and move toward environments where they are likely to encounter suitable… Expand

SUMMARY Gravity on Earth is a constant stimulus and many organisms are able to perceive and respond to it. However, there is no… Expand

Studies of infection in Drosophila melanogaster provide insight into both mechanisms of host resistance and tolerance of… Expand

The unicellular flagellate Euglena gracilis shows a negative gravitactic behavior. This is based on physiological mechanisms… Expand

Gravitactic bioconvective patterns created by Tetrahymena pyriformis in a Hele-Shaw apparatus were realized and compared with… Expand

SUMMARY Bioconvection is a result of the negative gravitactic behavior of microorganisms. When the top-heavy density gradient… Expand

The motile, unicellular freshwater flagellate Euglena gracilis uses external stimuli, like gravity, light or oxygen pressure in… Expand

Summary Negative geotactic behaviour of sea urchin larvae at various developmental stages from blastula to pluteus was analysed… Expand

This paper presents evidence that the negative geotactic behavior of Paramecium caudatum takes place by the mechanism of buoyancy… Expand

Ho & Hickman (1967a) found that zoospores of Phytophthora megasperma in an aqueous suspension accumulated just below the surface… Expand