Moridilla brockii

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Moridilla brockii
B156753.jpg
The nudibranch Moridilla brockii, Padangbai, Bali, Indonesia.
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: Facelinidae
Genus: Moridilla
Species:M. brockii
Binomial name
Moridilla brockii
Bergh, 1888 [1]

Moridilla brockii is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Facelinidae. [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.

This species is considered a nomen dubium.

Distribution

The type locality of Moridilla brockii is the Sunda Sea which is an old name for the Flores Sea. This species is considered to be widespread in the Indo-Pacific region. [3] It was redescribed from the Gulf of Mannar, India. [4]

Flores Sea A marginal sea in Indonesia between Celebes and the Sunda Islands of Flores and Sumbawa

The Flores Sea covers 240,000 square kilometres (93,000 sq mi) of water in Indonesia. The sea is bounded on the north by the island of Celebes and on the south by Sunda Islands of Flores and Sumbawa.

Gulf of Mannar gulf

The Gulf of Mannar is a large shallow bay forming part of the Laccadive Sea in the Indian Ocean. It lies between the west coast of Sri Lanka and the southeastern tip of India, in the Coromandel Coast region. The chain of low islands and reefs known as Ramsethu, also called Adam's Bridge, which includes Mannar Island, separates the Gulf of Mannar from Palk Bay, which lies to the north between Sri Lanka and India. The Malvathu Oya of Sri Lanka and the estuaries of Thamirabarani River and Vaipar River of South India drain into the Gulf. The dugong is found here.

India Country in South Asia

India, also known as the Republic of India, is a country in South Asia. It is the seventh largest country by area and with more than 1.3 billion people, it is the second most populous country as well as the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the northeast; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives, while its Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia.

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References

  1. ↑ Bergh, L. S. R. 1888. Beiträge zur Kenntniss der Aeolidiaden. IX. Verhandlungen der königlichkaiserlich Zoologisch-botanischen Gesellschaft in Wien (Abhandlungen) 38:673-706, pls.
  2. ↑ Bouchet, P. (2015). Moridilla brockii Bergh, 1888. In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2015-10-08
  3. ↑ Rudman, W.B., 1998 (October 14) Moridilla brockii Bergh, 1888. [In] Sea Slug Forum. Australian Museum, Sydney.
  4. ↑ Rao, K.P. (1965) Moridilla brockii Bergh 1888, redescribed with notes on anatomy and early development. Journal of the Marine Biological Association, India, 7(1): 61-68.
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