Akiodoris lutescens

Akiodoris lutescens
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Heterobranchia
Infraclass:	Euthyneura
Order:	Nudibranchia
Suborder:	Doridina
Superfamily:	Onchidoridoidea
Family:	Akiodorididae
Genus:	Akiodoris
Species:	A. lutescens
Binomial name
	Akiodoris lutescens; (Bergh, 1879) [1]

Last updated March 06, 2019

Akiodoris lutescens is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae.^[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 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.

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 a specimen collected by William Healey Dall in Nazan Bay at Atka Island, Aleutian Islands.^[1] It has been redescribed from specimens collected in the Sea of Okhotsk and the Commander Islands, Russia.^[3]

William Healey Dall was an American naturalist, a prominent malacologist, and one of the earliest scientific explorers of interior Alaska. He described many mollusks of the Pacific Northwest of America, and was for many years America's preeminent authority on living and fossil mollusks.

Atka Island is the largest island in the Andreanof Islands of the Aleutian Islands of Alaska. The island is 50 miles (80 km) east of Adak Island. It is 65 miles (105 km) long and 2–20 miles (3–30 km) wide with a land area of 404.6 square miles (1,048 km²), making it the 22nd largest island in the United States. The northeast of Atka Island contains the Korovin volcano which reaches a peak of 5,030 feet (1,533 m). Oglodak Island is located 3.4 miles off Cape Kigun, Atka's westernmost point.

The Aleutian Islands, also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a chain of 14 large volcanic islands and 55 smaller ones belonging to both the U.S. state of Alaska and the Russian federal subject of Kamchatka Krai. They form part of the Aleutian Arc in the Northern Pacific Ocean, occupying an area of 6,821 sq mi (17,666 km²) and extending about 1,200 mi (1,900 km) westward from the Alaska Peninsula toward the Kamchatka Peninsula in Russia, and mark a dividing line between the Bering Sea to the north and the Pacific Ocean to the south. Crossing longitude 180°, at which point east and west longitude end, the archipelago contains both the westernmost part of the United States by longitude and the easternmost by longitude. The westernmost U.S. island in real terms, however, is Attu Island, west of which runs the International Date Line. While nearly all the archipelago is part of Alaska and is usually considered as being in the "Alaskan Bush", at the extreme western end, the small, geologically related Commander Islands belong to Russia.

Related Research Articles

For a town in Sweden see Röstånga.

Onchidoridoidea is a taxonomic superfamily of sea slugs, dorid nudibranchs, marine gastropod molluscs.

Onchidorididae are a taxonomic family of sea slugs, dorid nudibranchs, marine gastropod molluscs in the superfamily Onchidoridoidea.

Chromodoris annae is a species of sea slug, a very colourful nudibranch, a shell-less marine gastropod mollusc in the family Chromodorididae.

Rudolph Bergh, full name Ludvig Sophus Rudolph Bergh, was a Danish physician and malacologist. He worked in Copenhagen.

Rostanga pulchra is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Discodorididae.

Halgerda fibra is a species of sea slug, a dorid nudibranch, shell-less marine gastropod mollusks in the family Discodorididae.

Chromodoris albolimbata is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.

Anteaeolidiella indica is a species of sea slug, an aeolid nudibranch. It is a marine gastropod mollusc in the family Aeolidiidae.

Rostanga alisae is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Discodorididae.

Rostanga lutescens, is a species of sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Discodorididae.

Akiodoris is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks in the family Akiodorididae.

Halgerda abyssicola is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Discodorididae.

Anteaeolidiella orientalis, is a species of sea slug, an aeolid nudibranch. It is a marine gastropod mollusc in the family Aeolidiidae.

Acanthodoris caerulescens is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae.

Onchidoris hystricina is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae.

Dendronotus dalli is a species of sea slug, a dendronotid nudibranch, a shell-less marine gastropod mollusc in the family Dendronotidae.

Akiodoris salacia is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae.

Spurilla braziliana is a species of sea slug, an aeolid nudibranch. It is a shell-less marine gastropod mollusc in the family Aeolidiidae.

Spurilla dupontae is a species of sea slug, an aeolid nudibranch. It is a shell-less marine gastropod mollusc in the family Aeolidiidae.

References

1 2 Bergh, L. S. R. (1879). On the nudibranchiate gasteropod Mollusca of the North Pacific Ocean, with special reference to those of Alaska. Scientific Results of the Exploration of Alaska, part I, Article V. (1):127-188, pls. 1-8.
↑ Bouchet, P. (2015). Akiodoris lutescens Bergh, 1879. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-11-16.
↑ Millen, S. V. and Martynov, A. V. (2005). Redescriptions of the nudibranch genera Akiodoris Bergh, 1879 and Armodoris Minichev, 1972 (Suborder Doridacea), with a new species of Akiodoris and a new family Akiodorididae. Proceedings of the California Academy of Sciences 56[1], 1-22.

This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

[B1879-1] 1 2 Bergh, L. S. R. (1879). On the nudibranchiate gasteropod Mollusca of the North Pacific Ocean, with special reference to those of Alaska. Scientific Results of the Exploration of Alaska, part I, Article V. (1):127-188, pls. 1-8.

[WoRMS-2] Bouchet, P. (2015). Akiodoris lutescens Bergh, 1879. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-11-16.

[3] Millen, S. V. and Martynov, A. V. (2005). Redescriptions of the nudibranch genera Akiodoris Bergh, 1879 and Armodoris Minichev, 1972 (Suborder Doridacea), with a new species of Akiodoris and a new family Akiodorididae. Proceedings of the California Academy of Sciences 56[1], 1-22.