Poster

         Mycology & Phycology

The Ectozoochorous Fungi of Icelandic Migratory Birds

Presenting Author
Carly Russell
Description
Fungal diversity and dispersal—particularly for microscopic or cryptic groups—has been overlooked in many environments. Estimates predict that there are over 1-million undescribed fungal species, highlighting how much more fungal diversity there is to discover. Fungi are transported by air, water, and living vectors internally (endozoochory) and externally (ectozoochory). Birds are a dispersal vector for a wide array of microscopic life forms including fungi, and due to their intercontinental migratory routes are a great candidate to study the role of living vectors in the long-distance dispersal of commensalistic, parasitic, and environmental fungi. While studies have been conducted on the endozoochorous fungi transported by birds, there is a gap in knowledge regarding ectozoochorous fungi. As part of my PhD thesis on the role of migratory birds as vectors for dispersal of Arctic fungi, I have been collecting samples from the feet and legs of Icelandic migratory birds to be analyzed with DNA metabarcoding and high-phase contrast microscopy. Thus far this analysis has revealed the presence of a variety of fungi and propagules, and further work is being conducted to identify and compare the external fungi of birds between bird species, locations, and seasons. With this important data, I aim to classify the constituents of the external mycobiome of the surveyed bird species, as well as link the transport of fungi with the intercontinental migration routes of these birds in order to address important hypotheses on the long-distance dispersal of fungi.