Byssus

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Byssus

 

(1) An excretion of the byssal gland, found in the so-called feet of many bivalve mollusks. Immediately upon expulsion, byssus hardens and forms durable silky filaments by which mollusks fasten themselves to underwater objects. In antiquity a special cloth, vysson, was prepared from the byssus excreted by the large mollusk pinna.

(2) A roe disease of freshwater fish caused by certain fungi of the genera Saprolegnia and Achy la.

References in periodicals archive ?
Mytilus mussels are often considered as sedentary species which spend most part of their life attached to hard substrates by using their byssus threads. Flowever, they live in highly heterogeneous environment and can move between microhabitats.
"Many researchers have studied mussel glue before," Qin said, referring to the sticky substance that anchors byssus threads to a surface.
In some cases, a new attachment was observed even before the old byssus threads had been cast off (Dharmaraj et al.
The dispersal of young post-larval bivalve mollusks by byssus threads. Nature 262:386-387.
Among their functions are camouflage, protection against desiccation, fouling by byssus threads produced by conspecifics, and predation from encrusting and boring organisms.