title: Magnetotactic bacteria at the geomagnetic equator.
abstract: Magnetotactic bacteria are present in fresh water and marine sediments of Fortaleza, Brazil, situated close to the geomagnetic equator. Both South-seeking and North-seeking bacteria are present in roughly equal numbers in the same samples. This observation is consistent with the hypothesis that the vertical component of the geomagnetic field selects the predominant polarity type among magnetotactic bacteria in natural environments.
authors.forename: R B
authors.initials: RB
authors.lastname: Frankel
authors.forename: R P
authors.initials: RP
authors.lastname: Blakemore
authors.forename: F F
authors.initials: FF
authors.lastname: DE Araujo
authors.forename: D M
authors.initials: DM
authors.lastname: Esquivel
authors.forename: J
authors.initials: J
authors.lastname: Danon