Fungal Ecology

Question 1

Aquatic hyphomycetes

Answer 1

• discovered in 1942 by Engold
• ecological grouping with adaptations to aquatic env
• about 300 described spp
• characteristic of turbulent, well-aerated streams
• asexual

Question 2

Invertebrate feeding in aquatic hyphomycetes study

Answer 2

-condition leaves are preferred over non-conditioned because:
> increased protenin, more nutritious
> animals grew more rapidly w/ conditioned leaf, fungi make more C available

Question 3

Tetraradiate conidia of aquatic hyphomycetes

Answer 3

• settle more slowly, and dispersed further
• anchorage to particular substrate
• only germinate when in contact with solid

Question 4

Trichomycetes

Answer 4

• typically live in hindgut of aquatic arthropods

- example of commensalism

Question 5

Aero-aquatic fungi

Answer 5

• live and grow under water
• produce conidia only above the surface
• primary colonizers of leaves entering the system
• grow at low O2 and can survive anaerobic cond

Question 6

Marine fungi

Answer 6

• 500 known spp
• abundance and distribution influenced by salinity, pH, temp, substrate availability
• parasites of algae, angiosperms, marine animals