| Isolation of magnetic nanoparticles from pachycondyla marginata ants | |
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MedLine Citation:
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PMID: 10482727 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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We report on the presence of magnetic iron oxides in the migratory ant Pachycondyla marginata. Magnetic particles were extracted from different parts of the ant (head, thorax and abdomen) using magnetic precipitation methods. Electron spectroscopic images for iron and oxygen were obtained from the extracted particles, and, by using the corresponding electron micrographs, histograms of size distribution were constructed. Selected area diffraction patterns were also obtained from the particles, and analysis of these showed the presence of a mixture of different iron oxides, including the magnetic oxides, magnetite and maghemite. The size distribution of the particles in the abdomen is different from that in the thorax and the head. In accordance with the hypothesis of magnetic orientation based on the presence of magnetic material within the body, two regions of the ant, the head and the abdomen, could be implicated in the detection of the geomagnetic field. |
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Authors:
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Acosta-Avalos; Wajnberg; Oliveira; Leal; Farina; Esquivel |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: The Journal of experimental biology Volume: 202 (Pt 19) ISSN: 1477-9145 ISO Abbreviation: J. Exp. Biol. Publication Date: 1999 Oct |
Date Detail:
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Created Date: 1999-11-04 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0243705 Medline TA: J Exp Biol Country: ENGLAND |
Other Details:
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Languages: Eng Pagination: 2687-92 Citation Subset: - |
Affiliation:
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Centro Brasileiro de Pesquisas Fisicas, Rua Xavier Sigaud 150, Rio de Janeiro, Brazil, Departamento de Zoologia, Universidade Estadual de Campinas, Campinas, CP 6109, Sao Paulo, Brazil and Departamento de Anatomia, Centro de Ciencias da Saude, Univ. |
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