- Bald sea urchin disease
Bald sea urchin disease is a
bacteria ldisease known to affect several species ofsea urchin s onMediterranean Sea ,North Atlantic andCalifornia coastlines. Research suggests two pathogens are responsible for the disease,Listonella anguillarum andAeromonas salmonicida .Infection generally occurs at the site of an existing physical injury. The affected area turns green and spines and other appendages are lost. If the lesion remains shallow and covers less than 30% of the animal's surface area, the animal tends to survive and eventually regenerates any lost tissue. However if the damage is more extensive or so deep that the hard inner test is perforated, the disease is fatal.
Affected species
*"
Allocentrotus fragilis "
*"Arbacia lixula "
*"Cidaris cidaris "
*"Echinus esculentus "
*"Paracentrotus lividus "
*"Psammechinus miliaris "
*"Sphaerechinus granularis "
*"Strongylocentrotus droebachiensis "
*"Strongylocentrotus franciscanus "
*"Strongylocentrotus purpuratus "References
*cite journal |url=http://www.int-res.com/articles/dao/2/d002p147.pdf |title=Diseases of Echinodermata. I. Agents microorganisms and protistans |journal=
Diseases of Aquatic Organisms |volume=2 |year=1987 |author=Michel Jangoux |pages=147–162 |doi=10.3354/dao002147
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