Dendronotus subramosus

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Dendronotus subramosus
Dendronotus subramosus (1740373031).jpg
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked):clade Heterobranchia
clade Euthyneura
clade Nudipleura
clade Nudibranchia
clade Dexiarchia
clade Cladobranchia
clade Dendronotida
Superfamily: Tritonioidea
Family: Dendronotidae
Genus: Dendronotus
Species:D. subramosus
Binomial name
Dendronotus subramosus
(MacFarland, 1966) [1]

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

Contents

Distribution

Dendronotus subramosus color variations Dendronotus subramosus color variations.jpg
Dendronotus subramosus color variations

This species can be found on the Pacific Ocean coast of North America from Bamfield, Vancouver Island, British Columbia to Islas Coronado, Baja California, Mexico. [3] [4]

Pacific Ocean Ocean between Asia and Australia in the west, the Americas in the east and Antarctica or the Southern Ocean in the south.

The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west and the Americas in the east.

North America Continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the west and south by the Pacific Ocean, and to the southeast by South America and the Caribbean Sea.

Bamfield town

Bamfield is a community that is surrounded by Crown Land, Indian Reserves, and portions of the Pacific Rim National Park, located on Barkley Sound, Vancouver Island in British Columbia. The community, with a population of 179 as of 2016, is divided by Bamfield Inlet.

Feeding habits

This species feeds on the hydroid Aglaophenia . [3] [5]

Hydroid (zoology) life stage

Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater Hydra are solitary, with the polyp attached directly to the substrate. When these produce buds, they become detached and grow on as new individuals.

<i>Aglaophenia</i> genus of cnidarians

Aglaophenia is a genus of hydrozoans in the family Aglaopheniidae.

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References

  1. ↑ MacFarland F.M. (1966) Studies of opisthobranchiate mollusks of the pacific coast of North America. Memoirs of the California Academy of Sciences VI: 1-546. page(s): 147.
  2. ↑ Bouchet, P. (2015). Dendronotus subramosus. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-02-08.
  3. 1 2 Behrens, D. W., & Hermosillo, A. (2005) Eastern Pacific nudibranchs, a guide to the opisthobranchs from Alaska to Central America. vi + 137 pp., 314 photos. Sea Challengers, Monterey, California, page 95.
  4. ↑ Stout C.C., Pola M. & Valdés Á. (2010) Phylogenetic analysis of Dendronotus nudibranchs with emphasis on northeastern Pacific species. Journal of Molluscan Studies 76: 367-375. page(s): 373
  5. ↑ Rudman, W.B., 2003 (July 30) Dendronotus subramosus MacFarland, 1966. [In] Sea Slug Forum. Australian Museum, Sydney.
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