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Arctonoe Vittata
''Arctonoe vittata'' is a species of scaled polychaete worms commonly known as a "scale worm". This species often lives as a commensal of another marine animal. Description At least thirty pairs of elytra, scale-like modifications to the dorsal cirri, conceal the animal's body. These are on alternate segments and do not meet dorsally, leaving the central line of the body uncovered. ''A. vittata'' is a pale yellowish colour, with a few faint transverse bands, and a dark stripe located across segments 7 and 8. It can grow to a length of but is usually shorter. It can be distinguished from the otherwise similar '' Arctonoe pulchra'' by the absence of a dark spot on each scale. Distribution ''A. vittata'' is native to the eastern Pacific Ocean. Its range extends from the Bering Strait to Ecuador, and as far west as Japan. Its depth range is from the middle shore down to about . Ecology The species forms a commensal relationship with the gumboot chiton, living on its gills. It al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolph Eduard Grube
Adolph Eduard Grube (18 May 1812, Königsberg – 23 June 1880 , Breslau) was a German zoologist. Adolph Eduard Grube, an able worker in many animal groups, was mainly interested in Polychaetes. In 1837 he defended his thesis at the University of Königsberg (then in Prussia). From 1843-1856 he was Professor of Zoology in the Universität Dorpat (then in Livonia) then at the Universität Breslau (now the University of Wrocław). He was one of the early scientific explorers of the Adriatic Sea. Works Partial list *1850. "Die Familien der Anneliden". ''Archiv für Naturgeschichte'' Berlin, 16(1): 249–364 *1866 "Beschreibungen neuer von der Novara-Expedition mitgebrachter Anneliden und einer neuen landplanarie". ''Verhandlungen der kaiserlich-königlichen zoologisch-botanischen Gesellschaft in Wien'' 16: 173–184. *1866 "Eine neue Annelida, zunächst einer nordischen, in der Nähe der Ophelien und Scalibregmen zu stellenden Annelide, Euzonus arcticus". ''Jahresbericht der Schl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henricia Leviuscula
''Henricia leviuscula'', commonly called the Pacific blood star, it is a species of sea star found along the Pacific coast of North America. Description They can usually be identified by their bright orange-red color, but there can also be many variations from tan to almost purple. The disk can be a mottled gray color. There can also be a saddle-like marking of lilac blotches between the rays, but the rays are not mottled. They commonly have 5 rays (occasionally 4–6). The rays are smooth and appear smooth due to the lack of pedicellariae and spines. The species is relatively small; the diameter is usually over 8 cm and rarely gets larger than 12 cm. As with all seastars the blood star has a madreporite which can be seen in the image below. Reproduction and life history Sexes are dioecious and females are not known to brood young. This statement is in conflict with other sources that state that smaller females brood their young and larger females discharge egg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1855
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 the echinoderms and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllodocida
Phyllodocida is an order of polychaete worms in the subclass Aciculata. These worms are mostly marine, though some are found in brackish water. Most are active benthic creatures, moving over the surface or burrowing in sediments, or living in cracks and crevices in bedrock. A few construct tubes in which they live and some are pelagic, swimming through the water column. There are estimated to be more than 4,600 accepted species in the order. Characteristics Phyllodocida are segmented worms and range in size from a few millimetres long to over a metre. Each segment bears a pair of paddle-like parapodia. The prostomium generally has one or two pairs of eyes, a dorsal pair of antennae, a ventral pair of sensory palps and a pair of organs on the neck. The peristomium is a ring, often hidden dorsally by the prostomium and the first segment. There is a muscular proboscis with one or more pairs of jaws. The next few segments tend to differ from those further back in having enlarged do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neoamphitrite Robusta
''Neoamphitrite'' is a genus of polychaetes belonging to the family Terebellidae. The genus has almost cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species: *'' Neoamphitrite affinis'' *'' Neoamphitrite edwardsii'' *'' Neoamphitrite figulus'' *'' Neoamphitrite glasbyi'' *'' Neoamphitrite grayi'' *'' Neoamphitrite groenlandica'' *'' Neoamphitrite hydrothermalis'' *'' Neoamphitrite pachyderma'' *'' Neoamphitrite ramosissima'' *'' Neoamphitrite robusta'' *'' Neoamphitrite sibogae'' *'' Neoamphitrite undevigintipes'' *'' Neoamphitrite vigintipes'' References {{Taxonbar, from=Q3880481 Polychaetes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thelepus Crispus
''Thelepus'' is a genus of polychaetes belonging to the family Terebellidae. The genus has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species Species: *'' Thelepus abranchiatus'' *'' Thelepus abyssorum'' *'' Thelepus alatus'' *'' Thelepus ambitus'' *'' Thelepus angustitoris'' *'' Thelepus antarcticus'' *'' Thelepus australiensis'' *'' Thelepus binakayanensis'' *'' Thelepus binakayensis'' *'' Thelepus boja'' *'' Thelepus branchiatus'' *'' Thelepus brevicauda'' *'' Thelepus brevitori'' *'' Thelepus cincinnatus'' *'' Thelepus corsicanus'' *'' Thelepus crassibranchiatus'' *'' Thelepus crispus'' *'' Thelepus davehalli'' *'' Thelepus dubius'' *'' Thelepus extensus'' *'' Thelepus fraggleorum'' *'' Thelepus haitiensis'' *'' Thelepu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terebellidae
The Terebellidae is a marine family of polychaete worms, of which the type taxon is ''Terebella'', described by Carl Linnaeus in his 1767 12th edition of ''Systema Naturae''. Characteristics Most terebellids live in burrows or crevices and are often of large size, ranging up to 150 millimetres in length and 15 millimetres in width. The numerous, very long tentacles which radiate from near the mouth are used for finding and collecting food particles from the sediment surface. The tentacles are not retractable as is the case in the ampharetids. They have plump anterior bodies and numerous segments in their long, tapered posterior bodies, whereas ampharetids are more compact. They have branched gills laterally on up to three anterior chaetigers but in the subfamily Thelepodinae the gills are numerous simple filaments. The mid-body chaetigers are in double rows in the subfamily Terebellinae. In the subfamily Polycirrinae, the gills are absent and the prostomium is expanded as a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haliotis Kamtschatkana
''Haliotis kamtschatkana'', common name the northern abalone, threaded abalone, or pinto abalone, is a species of large sea snail, a marine gastropod mollusc in the family Haliotidae, the abalones. It has been listed as "Endangered" by the IUCN Red List of Endangered Species since 2006. Taxonomy Sometimes two subspecies ''Haliotis kamtschatkana'' are recognized, though the World Register of Marine Species treats this species as monotypic: * ''Haliotis kamtschatkana assimilis'' Dall, 1878 * ''Haliotis kamtschatkana kamtschatkana'' Jonas, 1845 Description The pinto abalone has an adult shell size of approximately but it can rarely grow as large as . The rather thin shell is flattened and ear-shaped. The surface is covered with uneven spiral cords, often very indistinct, and strongly elevated undulations or lumps. The columellar shelf is narrow, flattened, and sloping inward. The shell has 3 to 6 elevated respiratory holes. These holes collectively make up what is known as the sel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solaster Dawsoni
''Solaster dawsoni'', the morning sun star, is a species of starfish in the family Solasteridae. It is found on either side of the northern Pacific Ocean. It has two subspecies: *''S. d. arcticus'' Verrill, 1914 *''S. d. dawsoni'' Verrill, 1880 Description The morning sun star has a wide disc and 8 to 13 (usually 11 or 12) long, tapering arms, often with turned-up tips. The upper or aboral surface is smooth, and its colour is usually red, orange, grey, or pale brown, sometimes with paler patches. It grows to a width of about . Image:Solaster dawsoni moribund.jpg Image:Dawsons Sun Star001.jpg, Eating. Distribution The morning sun star occurs in the northern Pacific Ocean at depths to about . Its range extends from Japan, China, and Siberia to the coasts of North America as far south as California. It is often found in rocky habitats, but can also inhabit other types of seabed. Behaviour The morning sun star is a predator, feeding mostly on other starfish. It is feared by ot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solaster Stimpsoni
''Solaster stimpsoni'', common names Stimpson's sun star, sun star, orange sun star, striped sunstar, and sun sea star, is a species of starfish in the family Solasteridae. Description ''Solaster stimpsoni'' is a large species, growing up to 50 cm in diameter. It can have 8 to 12 arms, but usually has 10. The aboral surface has a distinctive reddish orange colour and is covered with thick paxillae. The arms are long, slender, and tapering, each with a dark, purplish-grey contrasting stripe, running from the centre of the body to the tip. They contain no pedicellariae. The underside of the arms have two rows of tube feet. Distribution This species is found in the seas of Japan, and along the western coast of the United States, from central California, to as far north as Alaska. Habitat ''Solaster stimpsoni'' usually lives on rocky surfaces in the subtidal, and occasionally the low inter-tidal zones, at depths from 0 to 610 meters. Diet This starfish feeds on various smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pteraster Tesselatus
''Pteraster tesselatus'', the slime star or cushion star, is a species of starfish in the family (biology), family Pterasteridae found in the Pacific Ocean, North Pacific. Description The slime star's body has a wide central disc and five stumpy arms with upturned tips. It grows to a diameter of about and has an inflated appearance as the entire aboral (upper) surface is covered by a thick, raised, fleshy membrane. This has a smooth soft texture and is pale brown, grey, red, or orange, often with a symmetrical darker pattern. It conceals the madreporite and scales on the aboral surface proper and the gap underneath it is filled with a spongy tissue. A central pore in this membrane allows for water movement. The arms have rows of fan-shaped groups of five to seven spines between which are two rows of tube feet. The red Simple eye in invertebrates, eyespot is surrounded by spines at the apex of each arm. Distribution and habitat The slime star occurs in rocky areas on the west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luidia Foliata
''Luidia'' is a genus of starfish in the family Luidiidae in which it is the only genus. Species of the family have a cosmopolitan distribution. Characteristics Members of the genus are characterised by having long arms with pointed tips fringed with spines. Their upper surfaces are covered with paxillae, pillar-like spines with flattened summits covered with minute spinules. The upper marginal plates are replaced by paxillae, but the lower marginal plates are large and covered with paxillae. The tube feet do not have suckers, but have two swollen regions. A mouth, oesophagus, and cardiac stomach are seen, but no pyloric stomach or anus is present. The gonads are underneath the sides of each arm. The early larval stages of starfish are known as bipinnarial larvae, and members of this genus do not continue their development after this stage into a brachiolar stage before undergoing metamorphosis. However, they are capable of larval cloning, with asexual reproduction taking p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
