Published 1981 | Version v1
Report Open

Magnetotactic bacteria at the geomagnetic equator

Creators

  • 1. Massachusetts Inst. of Tech., Cambridge (USA). Francis Bitter National Magnet Lab.
  • 2. New Hampshire Univ., Durham (USA). Dept. of Microbiology
  • 3. Ceara Univ., Fortaleza (Brazil). Inst. de Fisica
  • 4. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro

Description

Magnetotatic bacteria are observed in freshwater 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. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Bacterias magnetotaticas sao observadas em agua doce e em sedimentos marinhos de Fortaleza, Brasil, situada perto do equador geomagnetico. Tanto as bacterias 'South-seeking' quanto as 'North-seeking' estao presentes em numeros aproximadamente iguais na mesma amostra. Essa observacao e consistente com a hipotese de que a componente vertical do campo geomagnetico seleciona o tipo de polaridade predominante entre as bacterias magnetotaticas em ambientes naturais. (L.C.)

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Additional details

Publishing Information

Imprint Pagination
9 p.
Report number
CBPF-NF--012/81

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
13702455
Subject category
S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
Descriptors DEI
BACTERIA; GEOMAGNETIC EQUATOR; GEOMAGNETIC FIELD; POLARIZATION
Descriptors DEC
MAGNETIC FIELDS; MICROORGANISMS