Aldisa albomarginata

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Aldisa albomarginata
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Infraclass: Euthyneura
Clade: Nudipleura
Order: Nudibranchia
Superfamily: Doridoidea
Family: Cadlinidae
Genus: Aldisa
Species:
A. albomarginata
Binomial name
Aldisa albomarginata
Millen, 1984 [1]

Aldisa albomarginata is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae. [2]

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

Sea slug group of marine invertebrates with varying levels of resemblance to terrestrial slugs

Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are actually gastropods, i.e. they are sea snails that over evolutionary time have either completely lost their shells, or have seemingly lost their shells due to having a greatly reduced or internal shell. The name "sea slug" is most often applied to nudibranchs, as well as to a paraphyletic set of other marine gastropods without obvious shells.

Nudibranch order of molluscs

Nudibranchs are a group of soft-bodied, marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, such as "clown", "marigold", "splendid", "dancer", and "dragon". Currently, about 3,000 valid species of nudibranchs are known.

Distribution

This species was described from two specimens found at 7 m and 10 m depth at Earls Cove, British Columbia, Canada 49°45′N124°01′W / 49.750°N 124.017°W / 49.750; -124.017 . It is known from Vancouver, British Columbia, Canada south to San Diego, southern California, USA. [3] [4]

British Columbia Province of Canada

British Columbia is the westernmost province of Canada, located between the Pacific Ocean and the Rocky Mountains. With an estimated population of 5.016 million as of 2018, it is Canada's third-most populous province.

Canada Country in North America

Canada is a country in the northern part of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres, making it the world's second-largest country by total area. Canada's southern border with the United States is the world's longest bi-national land border. Its capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. As a whole, Canada is sparsely populated, the majority of its land area being dominated by forest and tundra. Consequently, its population is highly urbanized, with over 80 percent of its inhabitants concentrated in large and medium-sized cities, many near the southern border. Canada's climate varies widely across its vast area, ranging from arctic weather in the north, to hot summers in the southern regions, with four distinct seasons.

Vancouver City in British Columbia, Canada

Vancouver is a coastal seaport city in western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2016 census recorded 631,486 people in the city, up from 603,502 in 2011. The Greater Vancouver area had a population of 2,463,431 in 2016, making it the third-largest metropolitan area in Canada. Vancouver has the highest population density in Canada with over 5,400 people per square kilometre, which makes it the fifth-most densely populated city with over 250,000 residents in North America behind New York City, Guadalajara, San Francisco, and Mexico City according to the 2011 census. Vancouver is one of the most ethnically and linguistically diverse cities in Canada according to that census; 52% of its residents have a first language other than English. Roughly 30% of the city's inhabitants are of Chinese heritage. Vancouver is classed as a Beta global city.

Related Research Articles

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<i>Cadlina</i> genus of molluscs

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Three-spot nudibranch species of mollusc

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<i>Aldisa cooperi</i> species of mollusc

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<i>Aldisa albatrossae</i> species of mollusc

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<i>Felimare kempfi</i> species of mollusc

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Felimare porterae is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae. It was named by Theodore Dru Alison Cockerell in honor of his botanist wife Wilmatte Porter Cockerell who collected the first specimens.

<i>Hallaxa chani</i> species of mollusc

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<i>Aldisa andersoni</i> species of mollusc

Aldisa andersoni is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

<i>Aldisa sanguinea</i> species of mollusc

Aldisa sanguinea, common name the blood-spot dorid, is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

Aldisa tara is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

Aldisa williamsi is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

Aldisa benguelae is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

<i>Acanthodoris brunnea</i> species of mollusc

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<i>Diaphorodoris lirulatocauda</i> species of mollusc

Diaphorodoris lirulatocauda is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Calycidorididae.

References

  1. Millen, S. V.; Gosliner, T. M. (1985). Four new species of dorid nudibranchs belonging to the genus Aldisa (Mollusca: Opisthobranchia), with a revision of the genus. Zoological Journal of the Linnean Society. 84: 195-233.
  2. MolluscaBase (2018). Aldisa albomarginata Millen in Millen & Gosliner, 1985. Accessed on 2018-12-03.
  3. Turgeon, D.; Quinn, J.F.; Bogan, A.E.; Coan, E.V.; Hochberg, F.G.; Lyons, W.G.; Mikkelsen, P.M.; Neves, R.J.; Roper, C.F.E.; Rosenberg, G.; Roth, B.; Scheltema, A.; Thompson, F.G.; Vecchione, M.; Williams, J.D. (1998). Common and scientific names of aquatic invertebrates from the United States and Canada: mollusks. 2nd ed. American Fisheries Society Special Publication, 26. American Fisheries Society: Bethesda, MD (USA). ISBN   1-888569-01-8. IX, 526 + cd-rom pp.
  4. iNaturalist, 2018. Aldisa albomarginata. Accessed 2018-12-03.