Undaria belongs to family Alariaceae and the order Laminariales. Undaria comprises three species: U. pinnatifida, U. undarioides and U. crenata....

Vegetative hyphae of A. astaci are aseptate and usually 7–9 μm in diameter. Actively growing hyphae are densely packed with coarsely granular...

Datasheet Type(s): Key Topic

Crayfish plague had a long history before the oomycete, Aphanomyces astaci, was finally established as the causative organism of the disease...

Morphology and life cycleThe adult female Lernaea cyprinacea has a small semispherical cephalothorax, which contains the mouth. Behind it is a...

Ulva lactuca is a green alga with a broadly expanded, irregularly lobed, flat distromatic blade. It is widely distributed worldwide although the...