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Heterokontophyta: Raphidophyceae


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Hallegraeff, GM 2007 , 'Heterokontophyta: Raphidophyceae', in PM McCarthy and AE Orchard (eds.), Algae of Australia: Introduction , Algae of Australia , ABRS, CSIRO, Canberra, Collingwood, pp. 259-361.

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This small group of flagellates includes golden-brown, coastal murine species as well as
greenish freshwater ones. their common designation as 'Chloromonads" is misleading because the green algal genus Chloromonas is unrelated. Until recently, considerable confusion existed regarding the taxonomy of this group, with various members mistakenly
assigned to other algal classes such as cryptomonads, chrysophytes, dinoflagellates and
euglenoids. Furthermore, these unicells are extremely fragile which often renders them unrecognisable in preserved phytoplankton field samples. Coastal and estuarine blooms of raphidophyte species such as Heterosigma akashiwo (Hada) Hada and Chattonella marina
(Subrahman.) Hara & Chihara pose a serious threat to fin-fish aquaculture in the Australian region. The killing mechanism of raphidophyte blooms is still poorly understood, but it may include physical clogging of gills, production of haemolytic substances, superoxide radicals and brevetoxin-like neurotoxins.

Item Type: Book Section
Authors/Creators:Hallegraeff, GM
Publisher: ABRS, CSIRO
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