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Muggiaea atlantica

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description Muggiaea atlantica Overview

Muggiaea atlantica is a calycophoran siphonophore, a colonial hydrozoan whose specialized individual units function together as one pelagic organism. It occurs in Atlantic waters and can become abundant in coastal seas when temperature, currents, and food conditions are favorable. Dense populations may affect marine food webs and have been associated with damage at finfish aquaculture sites, including salmon farms.

help Muggiaea atlantica FAQ

What is Muggiaea atlantica?

Muggiaea atlantica is a calycophoran siphonophore, a colonial hydrozoan made of specialized individual zooids that function together as one pelagic organism. Despite being catalogued among jellyfish, it is not a single bell-shaped medusa.

Is Muggiaea atlantica a true jellyfish?

No. It is a siphonophore colony, making it a closer relative of the Portuguese man o' war (Physalia) than of typical scyphozoan jellyfish. Its colony includes swimming bells called nectophores rather than a single pulsing bell.

Where is Muggiaea atlantica found?

It occurs in Atlantic waters and can become very abundant in coastal seas when temperature, currents, and food conditions are favorable. It is a frequently studied species in Spain's Galician rías, where its swarms fluctuate with upwelling conditions.

Do Muggiaea atlantica blooms cause problems?

When conditions favor it, populations can spike sharply and affect local plankton food webs. High abundances of these small colonies have also been a nuisance for fishing and aquaculture operations in coastal areas where they concentrate.

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