Journal of Micropalaeontology
Journal of Micropalaeontology
JM
Articles | Volume 44, issue 2
Articles | Volume 44, issue 2
https://doi.org/10.5194/jm-44-275-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/jm-44-275-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 44, issue 2
Research article
 | 
08 Sep 2025
Research article |  | 08 Sep 2025

Analysis of a human-mediated microbioinvasion: the global spread of the benthic foraminifer Trochammina hadai Uchio, 1962

Mary McGann, Maria Holzmann, Vincent M. P. Bouchet, Sibelle Trevisan Disaró, Patrícia P. B. Eichler, David W. Haig, Stephen J. Himson, Hiroshi Kitazato, Jean-Charles Pavard, Irina Polovodova Asteman, André R. Rodrigues, Clément M. Tremblin, Masashi Tsuchiya, Mark Williams, Phoebe O'Brien, Josefin Asplund, Malou Axelsson, and Thomas D. Lorenson

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Short summary
The foraminifer Trochammina hadai, native to Asia, has been found in the USA, Canada, Sweden, France, Brazil, and Australia coastal waters. The primary vectors of introduction include mariculture of oysters and the plant matter in which they were shipped, as well as the release of ballast water/sediment in receiving ports. Secondary introductions occur by mud attached to anchors of fishing and pleasure boats. Globally, the species has spread rapidly, impacting native species and local biodiversity.
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Advances and challenges in modern and benthic foraminifera...