Startseite Exotic rats consume sporocarps of arbuscular mycorrhizal fungi in American Samoa
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Exotic rats consume sporocarps of arbuscular mycorrhizal fungi in American Samoa

  • Gregory H. Adler EMAIL logo , Eva Counsell , Joshua O. Seamon und Stephen P. Bentivenga
Veröffentlicht/Copyright: 19. April 2017
Mammalia
Aus der Zeitschrift Mammalia Band 82 Heft 2

Abstract

We sampled three exotic species of rats (Rattus exulans, Rattus norvegicus and Rattus rattus) by live-trapping along two transects on Tutuila, American Samoa and searched for evidence of mycophagy by examining fecal pellets. We found spores of three species of arbuscular mycorrhizal fungi (Septoglomus constrictum, Rhizophagus clarus and Rhizophagus fasciculatus) in 19 of the 26 samples examined. All the three species of rats consumed sporocarps, with R. clarus being the most widely consumed. We suggest that mycophagy by exotic rats is common in American Samoa and may facilitate invasion of exotic plants such as the tree Falcataria moluccana.

Acknowledgments

We thank Avele Lalogafu’afu’a, Siaifoi Fa’aumu and Ailao Tualaulelei for field assistance and the Department of Marine and Wildlife Resources of the American Samoa Government through its USFWS Wildlife and Sport Fish Restoration program for logistical and funding support.

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Received: 2016-9-15
Accepted: 2017-3-8
Published Online: 2017-4-19
Published in Print: 2018-2-23

©2018 Walter de Gruyter GmbH, Berlin/Boston

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