Thordisa filix

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Thordisa filix
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked):clade Heterobranchia
clade Euthyneura
clade Nudipleura
clade Nudibranchia
clade Euctenidiacea
clade Doridacea
Superfamily: Doridoidea
Family: Discodorididae
Genus: Thordisa
Species:T. filix
Binomial name
Thordisa filix
Pruvot-Fol, 1951 [1]

Thordisa filix is a species of sea slug, a dorid nudibranch, shell-less marine opisthobranch gastropod molluscs in the family Discodorididae. [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.

Related Research Articles

Alice Pruvot-Fol was a French opisthobranch malacologist.

<i>Atagema</i> genus of molluscs

Atagema is a genus of sea slugs, specifically dorid nudibranchs. They are marine gastropod molluscs in the family Discodorididae.

Discodorididae family of molluscs

Discodorididae is a taxonomic family of sea slugs, specifically dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea.

<i>Doriopsilla</i> genus of molluscs

Doriopsilla is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Dendrodorididae.

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

<i>Phyllidia</i> genus of molluscs

Phyllidia is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Phyllidiidae.

<i>Costasiella</i> genus of molluscs

Costasiella is a genus of sacoglossan sea slugs, a shell-less marine opisthobranch gastropod mollusks in the family Costasiellidae.

Hypselodoris dollfusi is a species of colourful sea slug or dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae. After being described initially in 1933 by Pruvot-Fol, this species was not seen again until its rediscovery in 2000 in the Sea of Khorfakkan, United Arab Emirates.

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

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

Cadlina excavata is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

<i>Atagema gibba</i> species of mollusc

Atagema gibba is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Discodorididae.

Facelina dubia is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.

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

Thordisa aurea is a species of sea slug, a dorid nudibranch, shell-less marine opisthobranch gastropod molluscs in the family Discodorididae.

<i>Phyllidia picta</i> species of mollusc

Phyllidia picta is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.

<i>Phyllidiopsis krempfi</i> species of mollusc

Phyllidiopsis krempfi is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae. This species was named to honour Armand Krempf, a French marine biologist and director of the Nha Trang Institute of Oceanography (Vietnam) from 1921.

<i>Phyllidiopsis gemmata</i> species of mollusc

Phyllidiopsis gemmata is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.

Facelina rutila is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae.

Polycera maculata is a species of sea slug, a nudibranch, a shell-less marine gastropod mollusc in the family Polyceridae.

References

  1. Pruvot-Fol A. (1951). Etudes des nudibranches de la Méditerranée 2. Archives de Zoologie Expérimentale et Générale 88: 1-80
  2. Gofas, S. (2004). Thordisa filix Pruvot-Fol, 1951. In: MolluscaBase (2016). Accessed through: World Register of Marine Species on 2016-05-12.