Aeolidiella drusilla

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Aeolidiella drusilla
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Nudipleura
clade Nudibranchia
clade Dexiarchia
clade Cladobranchia
clade Aeolidida
Superfamily:
Aeolidioidea
Family:
Aeolidiidae
Genus:
Aeolidiella
Species:
A. drusilla
Binomial name
Aeolidiella drusilla
Bergh, 1900 [1]

Aeolidiella drusilla is a species of sea slug, an aeolid nudibranch in the family Aeolidiidae. [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.

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.

Aeolidiidae Family of molluscs

Aeolidiidae, a family of aeolid nudibranchs, are a family of sea slugs, shell-less marine gastropod molluscs.

Contents

Description

The body attains a length of 60 mm.

Distribution

This marine species was described from Cook Strait, New Zealand. It is also found in southern Australia. [3]

Cook Strait strait between the North and South Islands of New Zealand

Cook Strait is a strait that separates the North and South Islands of New Zealand. It connects the Tasman Sea on the northwest with the South Pacific Ocean on the southeast, and runs next to the capital city, Wellington. It is 22 kilometres (14 mi) wide at its narrowest point, and is considered one of the most dangerous and unpredictable waters in the world.

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References

  1. ↑ Bergh, L.S.R. (1900) Ergebnisse einer Reise nach dem Pacific (Schauinsland 1896-1897). Die Opisthobranchier. 13(3), 207-246, Pls.19-21.
  2. ↑ Rosenberg, G.; Bouchet, P. (2015). Aeolidiella drusilla Bergh, 1900. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-11-12
  3. ↑ Rudman, W.B., 2001 (February 4) Aeolidiella drusilla Bergh, 1900. [In] Sea Slug Forum. Australian Museum, Sydney.


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