Aldisa cooperi
Encyclopedia
Aldisa cooperi is a species
of sea slug
, a dorid
nudibranch
, a marine
gastropod mollusc in the family
Cadlinidae
.
This demersal nudibranch is found in cold-temperate waters from the intertidal to subtidal zones (up to a depth of 20 m) along the Pacific coast of North America, from the California to Alaska. It has also been reported along the coast of Japan and Korea. It is preferably nestled in its food sponge Anthoarcuata graciae.
Cooper's aldisa is a small dorid nudibranch, growing to a length of 2.5 cm. Its mantle has a yellow to orange color with some black spots spread over it. It has a smooth body covered with sparse, low tubercles and gills clustered on its rear side. It lays its eggs in ribbons.
Its vulnerability is low to moderate, but it is not listed in the IUCN Red List
.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of sea slug
Slug
Slug is a common name that is normally applied to any gastropod mollusc that lacks a shell, has a very reduced shell, or has a small internal shell...
, a dorid
Doridoidea
Doridoidea, commonly known as dorid nudibranchs, are a taxonomic superfamily of medium to large, shell-less sea slugs, marine gastropod mollusks in the clade Doridacea, included in the clade Nudibranchia....
nudibranch
Nudibranch
A nudibranch is a member of what is now a taxonomic clade, and what was previously a suborder, of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage. They are noted for their often extraordinary colors and striking forms...
, a marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...
gastropod mollusc in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Cadlinidae
Cadlinidae
Cadlinidae is a family of sea slugs, dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea. This family is within the clade Euctenidiacea....
.
This demersal nudibranch is found in cold-temperate waters from the intertidal to subtidal zones (up to a depth of 20 m) along the Pacific coast of North America, from the California to Alaska. It has also been reported along the coast of Japan and Korea. It is preferably nestled in its food sponge Anthoarcuata graciae.
Cooper's aldisa is a small dorid nudibranch, growing to a length of 2.5 cm. Its mantle has a yellow to orange color with some black spots spread over it. It has a smooth body covered with sparse, low tubercles and gills clustered on its rear side. It lays its eggs in ribbons.
Its vulnerability is low to moderate, but it is not listed in the IUCN Red List
IUCN Red List
The IUCN Red List of Threatened Species , founded in 1963, is the world's most comprehensive inventory of the global conservation status of biological species. The International Union for Conservation of Nature is the world's main authority on the conservation status of species...
.