Myxomycetes associated with woody twigs
DOI:
https://doi.org/10.33885/sf.2008.3.1020Keywords:
ecology, myxomycetes, slime molds, twigsAbstract
The moist chamber culture technique was used to investigate the assemblage of
myxomycetes (plasmodial slime molds or myxogastrids) associated with the microhabitat
represented by fallen woody twigs. Samples of twigs (<1.0 cm in diameter) were collected
from study areas in Kansas, Oklahoma, Arkansas and Virginia in the United States, Costa Rica,
New Zealand, Australia and southern Argentina. A majority (67%) of the 256 cultures
prepared with twigs yielded some evidence (either fruiting bodies or plasmodia) of
myxomycetes. As a general observation, twigs from temperate deciduous forests were more
productive than twigs collected in other types of forests or woodlands. The least productive
set of samples (23% positive for 47 cultures and just five species) was collected from a highelevation
(3120 m) oak forest in Costa Rica. In contrast, two sets of cultures prepared with
samples obtained from temperate deciduous forests yielded >85% positive cultures and
>15 species. The species of myxomycetes recorded from twigs included Arcyria cinerea
(represented by the largest number of collections), Stemonitis fusca var. nigrescens,
Perichaena depressa, Perichaena chrysosperma and Physarum pusillum.
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