Date: 26 November 2013
Aspergillus terreus Thom. Conidial head of Aspergillus terreus. Conidial heads are compact, columnar and biseriate. Conidiophores are hyaline to slightly yellow and smooth walled.
Copyright:
With thanks to G Kaminski. D Ellis and R Hermanis Mycology Unit, Women’s & Children’s Hospital , Adelaide, South Australia 5006
Notes:
Colonies on CYA 40-50 mm diam, plane, low and velutinous, usually quite dense; mycelium white; conidial production heavy, brown (Dark Blonde to Camel, 5-6D4); reverse pale to dull brown or yellow brown. Colonies on MEA 40-60 mm diam, similar to those on CYA or less dense. Colonies on G25N 18-22 mm diam, plane or irregularly wrinkled, low and sparse; conidial production light, pale brown; brown soluble pigment sometimes produced; reverse brown. No growth at 5°C. Colonies at 37°C growing very rapidly, 50 mm or more diam, of similar appearance to those on CYA at 25°C.Conidiophores borne from surface hyphae, stipes 100-250 μm long, smooth walled; vesicles 15-20 μm diam, fertile over the upper hemisphere, with densely packed, short, narrow metulae and phialides, both 5-8 μm long; conidia spherical, very small, 1.8-2.5 μm diam, smooth walled, at maturity borne in long, well defined columns.Distinctive featuresVelutinous colonies formed at both 25°C and 37°C, uniformly brown, with no other colouration, and minute conidia borne in long columns make Aspergillus terreus a distinctive species.
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Aspergillosis in the coral sea fan Gorgonia ventalina. Sea fan coral Gorgonia ventalina, Florida Keys, USA. Depth ~5 metres, showing a lesion surrounded by a band of purple tissue. Central areas of the lesion are devoid of coral tissue revealing the underlying axial skeleton. The purple areas are devoid of coral polyps and result from the increased production of purple sclerites (small, non-fused, carbonate skeletal elements). The purpled area also indicates the location of high fungal hyphal density and el
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Aspergillosis in the coral sea fan Gorgonia ventalina. In the Caribbean ond offshore USA the sea fan coral species Gorgonia ventalina is undergoing an epizootic due to Aspergillus sydowii infection. This species of Aspergillus is also known to be associated with food contamination and for opportunistic infection in humans.Taken in San Salvador, Bahamas. Bar represents 5cm. This sea fan was heavily colonized by algae.A -tumours and galls B -lesion C -purplingGalls are composed of axial skeleton and scl
