This is an old revision of this page, as edited by Scorpions13256 (talk | contribs) at 17:51, 29 December 2020 (added Category:Taxa named by Peter Forsskål using HotCat). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
Revision as of 17:51, 29 December 2020 by Scorpions13256 (talk | contribs) (added Category:Taxa named by Peter Forsskål using HotCat)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff) Not to be confused with Cassiopea xamachana.
| Cassiopea andromeda | |
|---|---|
| |
| Specimen at the Cologne Zoo | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Scyphozoa |
| Order: | Rhizostomeae |
| Family: | Cassiopeidae |
| Genus: | Cassiopea |
| Species: | C. andromeda |
| Binomial name | |
| Cassiopea andromeda Forskål, 1775 | |
Cassiopea andromeda is one of many cnidarian species called the upside-down jellyfish. It usually lives in intertidal sand or mudflats, shallow lagoons, and around mangroves. This jellyfish, often mistaken for a sea anemone, usually keeps its mouth facing upward. Its yellow-brown bell, which has white or pale streaks and spots, pulsates to run water through its arms for respiration and to gather food.
Alimentation and strategies
Cassiopea andromeda is carnivorous and eats small animals from the sea or just pieces of them after it paralyzes its prey with its mucous and nematocysts when they are released. This jellyfish also lives in a symbiotic relationship with photosynthetic dinoflagellate algae, the Zooxanthellae, and with shrimps. The Zooxanthellae live in the tissues of the ventral surface of its body and it is the responsible for the color of it. As the Zooxanthellaeon gets food for the Cassiopea andromeda, in response, it gets the sunlight that is necessary for the photosynthetic dinoflagellate algae. Therefore, the shrimp has a different symbiotic relationship with this jellyfish. It lives in its tentacles and protects it by taking the parasites off. In exchange, the Cassiopea andromeda mainly offers protection to the shrimp from the environment. This symbiotic relationship is called mutualism, where both species benefit from their interactions.
.jpg)
Reproduction
As a cnidarian, this jellyfish has an asexual and sexual reproduction. It reproduces by budding when it is in a polyp form. When it is in a medusa form, it reproduces sexually. The medusa female produces the eggs and keeps them. As the male produces the sperm and releases them in the water, the female uses its tentacles to bring the sperm to fertilize its eggs.
Size
This jellyfish can measure a maximum of 30.0 cm wide.
Interactions with humans
The species can deliver a painful sting. Symptoms include mild pain, rash, and swelling.
External links
- Photos of Cassiopea andromeda on Sealife Collection
| Taxon identifiers | |
|---|---|
| Cassiopea andromeda | |