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Mandeliidae
Mandela's nudibranch, ''Mandelia mirocornata'', is a species of sea slug, a dorid nudibranch. It is a marine gastropod mollusc, the only member of the genus ''Mandelia'' and the family Mandeliidae. The genus and family name honor Nelson Mandela, the former President of South Africa. Distribution This species has so far only been found around the southern African coast from the Atlantic coast of the Cape Peninsula to Port Elizabeth in 10–400 m of water. It is probably endemic. Description Mandela's nudibranch has a bumpy dirty white to brown skin. It has black spots scattered over the notum. Its gills and rhinophores are large and creamy-coloured. The rhinophores are perfoliate, but are oblong rather than round. The animal may also have irregular brown stripes rather than spots on the notum, radiating out to the margins. It may reach a total length of 70 mm.ZSILAVECZ, G. 2007. ''Nudibranchs of the Cape Peninsula and False Bay''. Ecology This species feeds on sponges. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandelia Mirocornata Closeup
Mandela's nudibranch, ''Mandelia mirocornata'', is a species of sea slug, a dorid nudibranch. It is a marine gastropod mollusc, the only member of the genus ''Mandelia'' and the family Mandeliidae. The genus and family name honor Nelson Mandela, the former President of South Africa. Distribution This species has so far only been found around the southern African coast from the Atlantic coast of the Cape Peninsula to Port Elizabeth in 10–400 m of water. It is probably endemic. Description Mandela's nudibranch has a bumpy dirty white to brown skin. It has black spots scattered over the notum. Its gills and rhinophores are large and creamy-coloured. The rhinophores are perfoliate, but are oblong rather than round. The animal may also have irregular brown stripes rather than spots on the notum, radiating out to the margins. It may reach a total length of 70 mm.ZSILAVECZ, G. 2007. ''Nudibranchs of the Cape Peninsula and False Bay''. Ecology This species feeds on sponges. S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doridacea
''Doridacea'' is a taxonomic grouping of dorid nudibranchs, shell-less marine gastropod mollusks.Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005''Classification and nomenclator of gastropod families''.Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . ISSN 0076-2997. 397 pp. included in the clade Euctenidiacea of the clade Nudibranchia. Taxonomy *Superfamily Doridoidea **Family Dorididae **Family Actinocyclidae **Family Chromodorididae **Family Discodorididae *Superfamily Phyllidioidea **Family Phyllidiidae **Family Dendrodorididae **Family Mandeliidae *Superfamily Onchidoridoidea (= Phanerobranchiata Suctoria) **Family Akiodorididae **Family Calycidorididae **Family Goniodorididae **Family Onchidorididae **Family Corambidae *Superfamily Polyceroidea (= Phanerobranchiata Non Suctoria) **Family Polyceridae **Family Aegiridae - In Bouchet & Rocroi (2005) Aegiretidae is an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidioidea
Phyllidioidea is a taxonomic superfamily of colorful sea slugs, dorid nudibranchs, marine gastropod mollusks. Taxonomy *Family Phyllidiidae Rafinesque, 1814 *Family Dendrodorididae O'Donoghue, 1924 *Family Mandeliidae Mandela's nudibranch, ''Mandelia mirocornata'', is a species of sea slug, a dorid nudibranch. It is a marine gastropod mollusc, the only member of the genus ''Mandelia'' and the family Mandeliidae. The genus and family name honor Nelson Mandela, ... Valdés & Gosliner, 1999 References Nudipleura {{Heterobranchia-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Marine Heterobranch Gastropods Of South Africa
The list of marine heterobranch gastropods of South Africa is a list of saltwater mollusc species that form a part of the molluscan fauna of South Africa. This list does not include the land or freshwater molluscs. This is a sub-list of the list of marine gastropods of South Africa, which is in turn a sub-list of the list of marine molluscs of South Africa. Heterobranchia Architectonicidae *Variegated sundial shell '' Heliacus variegatus'' (Gmelin, 1791) (Eastern Cape to Mozambique)Branch, G.M. Griffiths, C.L. Branch, M.L. Beckley, L.E. ''Two Oceans: A guide to the marine life of southern Africa.'' 5th impression, David Philip, Cape Town, 2000. Siphonariidae - False limpets *'' Siphonaria annaea'' Tomlin, 1944 (Durban northwards) *Cape False limpet '' Siphonaria capensis'' Quoy and Gaimard (Namibia to northern KwaZulu-Natal) * '' Siphonaria compressa'' Allanson, 1958 *'' Siphonaria concinna'' Sowerby, 1824 (Cape Point to Zululand) *'' Siphonaria nigerrima'' Smith, 190 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euctenidiacea
The Euctenidiacea, common name dorid nudibranchs, are a taxonomic suborder of sea snails or slugs, marine gastropod molluscs in the order Nudibranchia. Bouchet & Rocroi (2005) rejected the name Anthobranchia on the grounds that it also included ''Onchidium'' at the time of original publication. Doridina is equivalent and used in the latest classification.Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526. A morphological phylogenetic study, published in 2000, by Wägele & Willan showed that the subclade Gnathodoridacea (= Bathydoridoidea) and the subclade Doridacea (= Phanerobranchia + Cryptobranchia + Porostomata) each form a monophyletic group. In a later study, published in 2002, A. Valdés concluded that the superfamilies Doridoidea and Phyllidioidea (called by him Cryptobranchia + Porost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Peninsula
The Cape Peninsula ( af, Kaapse Skiereiland) is a generally mountainous peninsula that juts out into the Atlantic Ocean at the south-western extremity of the African continent. At the southern end of the peninsula are Cape Point and the Cape of Good Hope. On the northern end is Table Mountain, overlooking Table Bay and the city bowl of Cape Town, South Africa. The peninsula is 52 km long from Mouille point in the north to Cape Point in the south. The Peninsula has been an island on and off for the past 5 million years, as sea levels fell and rose with the ice age and interglacial global warming cycles of, particularly, the Pleistocene. The last time that the Peninsula was an island was about 1.5 million years ago. Soon afterwards it was joined to the mainland by the emergence from the sea of the sandy area now known as the Cape Flats. The towns and villages of the Cape Peninsula and Cape Flats, and the undeveloped land of the rest of the peninsula now fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Elizabeth
Gqeberha (), formerly Port Elizabeth and colloquially often referred to as P.E., is a major seaport and the most populous city in the Eastern Cape province of South Africa. It is the seat of the Nelson Mandela Bay Metropolitan Municipality, South Africa's second-largest metropolitan district by area size. It is the sixth-most populous city in South Africa and is the cultural, economic and financial centre of the Eastern Cape. The city was founded as Port Elizabeth in 1820 by Sir Rufane Donkin, who was the governor of the Cape at the time. He named it after his late wife, Elizabeth, who had died in India. The Donkin memorial in the CBD of the city bears testament to this. Port Elizabeth was established by the government of the Cape Colony when 4,000 British colonists settled in Algoa Bay to strengthen the border region between the Cape Colony and the Xhosa. It is nicknamed "The Friendly City" or "The Windy City". In 2019, the Eastern Cape Geographical Names Committee recommende ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which appli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notum
The notum (plural nota) is the dorsal portion of an insect's thoracic segment, or the dorsal surface of the body of nudibranch gastropods. The word "notum" is always applied to dorsal structures; in other words structures that are part of the back of an animal, as opposed to being part of the animal's ventral surface, or underside. This word is used in entomology, the study of insects, and in malacology, the study of mollusks. In malacology the word is used to describe the back of the body of the taxonomic group of marine, shell-less gastropods that are known as nudibranchs. In insects In entomology, the notum is the dorsal portion of an insect's thoracic segment. The pterothoracic nota (comprising the meso- and metathoracic segments) have two main divisions - the anterior wing-bearing alinotum and the posterior phragma-bearing postnotom.Cranston, P. S, and P. J Gullan. The Insects: An Outline Of Entomology. 5th ed. Chichester: Wiley-Blackwell, 2014. Print. The phragma, or endo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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