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Mopalia Spectabilis
''Mopalia spectabilis'', commonly known as the red-flecked mopalia, is a species of chiton. Size and description ''Mopalia spectabilis'' is a chiton that has a central area of plates 2-7 pitted in longitudinal rows. The girdle commonly banded light orange and brown. This species nearly always exhibits bright turquoise zigzag markings. The girdle bears prominent hairs that are plumed and are said to look like small “bottle brushes”.Baldwin, A. (2007). Illustrated Keys to the chitons (Polyplacophora). Accessed from: http://www.wallawalla.edu/academics/departments/biology/rosario/inverts/Mollusca/Polyplacophora/Baldwin_Polyplacophora_Key_Sept_2007.pdf Kozloff, Eugene N. (1987). ''Marine Invertebrates of the Pacific Northwest''. University of Washington Press, Seattle, WA. 511 pp. Similar species ''Tonicella lineata'' and ''Tonicella undocaerulea'' both have wavey bright blue lines on valves, however both ''Tonicella'' species have hairless girdles that are red or pink, often wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ian McTaggart-Cowan
Ian McTaggart-Cowan (June 25, 1910 – April 18, 2010) was a Scottish-Canadian zoologist, conservation movement, conservationist, and television presenter. He has been called "the father of Canadian ecology". He was the brother of meteorologist Patrick McTaggart-Cowan. Life and career McTaggart-Cowan was born in Edinburgh, Scotland, and moved to North Vancouver (district municipality), North Vancouver, British Columbia, Canada with his family when he was three years old. He completed studies at the University of British Columbia and then at the University of California at Berkeley, where he studied deer under Joseph Grinnell. Upon returning to Canada, he took up a position at the provincial museum in British Columbia (later renamed the Royal British Columbia Museum) for six years. He next took a professorship at the University of British Columbia, where he established the first university wildlife program in Canada. McTaggart-Cowan was active in early studies of British Columbia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroid (zoology)
Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater '' Hydra'' are solitary, with the polyp attached directly to the substrate. When these produce buds, they become detached and grow on as new individuals. The majority of hydroids are colonial. The original polyp is anchored to a solid substrate and forms a bud which remains attached to its parent. This in turn buds and in this way a stem is formed. The arrangement of polyps and the branching of the stem is characteristic of the species. Some species have the polyps budding directly off the stolon which roots the colony. The polyps are connected by epidermis which surrounds a gastrovascular cavity. The epidermis secretes a chitinous skeleton which supports the stem and in some hydroids, the skeleton extends into a cup shape surrounding the polyp. Most of the polyps are gastrozooids or feeding polyps, but some are specialised reprodu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mopalia Ferreirai
Mopalia is a genus of chitons in the family Mopaliidae. Species Species include: Integrated Taxonomic Information System (ITIS) *'' Mopalia acuta'' *'' Mopalia ciliata'' *'''' *'''' *'' |
Monophyly
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic groups are typically characterised by shared derived characteristics ( synapomorphies), which distinguish organisms in the clade from other organisms. An equivalent term is holophyly. The word "mono-phyly" means "one-tribe" in Greek. Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic group'' consists of all of the descendants of a common ancestor minus one or more monophyletic groups. A '' polyphyletic group'' is characterized by convergent features or habits of scientific interest (for example, night-active primates, fruit trees, aquatic insects). The features by which a polyphyletic group is differentiated from others are not inherited from a common ancestor. These definitions have taken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tube Worm (body Plan)
A tubeworm is any worm-like sessile invertebrate that anchors its tail to an underwater surface and secretes around its body a mineral tube, into which it can withdraw its entire body. Tubeworms are found among the following taxa: * Annelida, the phylum containing segmented worms ** Polychaetea, the class containing bristle worms *** Canalipalpata, the order containing bristle-footed annelids or fan-head worms **** Siboglinidae, the family of beard worms ***** ''Riftia pachyptila'', a species known as giant tube worms ***** Lamellibrachia, a genus **** Serpulidae, a family **** Sabellidae, the family containing feather duster worms * Phoronida, the phylum containing horseshoe worms * Microconchida, an order of extinct tubeworms * ''Kuphus polythalamia ''Kuphus polythalamius'' is a species of shipworm, a marine bivalve mollusc in the family Teredinidae. Description The tube of ''Kuphus polythalamius'' is known as a crypt and is a calcareous secretion designed to enable the animal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scaleworm
Polynoidae is a family of marine Polychaete worms known as "scale worms" due to the scale-like elytra on the dorsal surface. Almost 900 species are currently recognised belonging to 9 subfamilies and 167 genera. They are active hunters, but generally dwell in protected environments such as under stones. The group is widely distributed from shallow intertidal waters to hadal trenches. They are the most diverse group of polychaetes in terms of genus number and second most diverse in terms of species number which is almost 8% of all segmented worm species. Description Most Polynoidae species are short and flattened, but can reach as much as 20 cm in length and 10 cm width in ''Eulagisca gigantea'' and ''Eulagisca uschakovi''. Individuals are usually covered almost entirely by elytra, which can be shed and regenerated in many species. The elytra of some species are faintly bioluminescent, and leave glowing traces around the mouthparts of their predators, making those preda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metandrocarpa Taylori
''Metandrocarpa'' is a genus of ascidian tunicates in the family Styelidae. Species within the genus ''Metandrocarpa'' include:Sanamyan, K. (2015)''Metandrocarpa'' Michaelsen, 1904 .In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turon, X. (2015) Ascidiacea World Database. Accessed through: World Register of Marine Species on 2015-12-23 * ''Metandrocarpa agitata'' Kott, 1985 * ''Metandrocarpa asymmetra'' Monniot C., 2001 * ''Metandrocarpa dura'' (Ritter, 1896) * ''Metandrocarpa fascicularis'' Millar, 1962 * ''Metandrocarpa indica'' Kott, 1972 * ''Metandrocarpa kudoi'' Rho & Cole, 1999 * ''Metandrocarpa manina'' Monniot & Monniot, 1987 * ''Metandrocarpa michaelseni'' Ritter & Forsyth, 1917 * ''Metandrocarpa miniscula'' Kott, 1985 * ''Metandrocarpa protostigmatica'' Michaelsen, 1922 * ''Metandrocarpa reducta'' Monniot, 1988 * ''Metandrocarpa sterreri'' Monniot, 1972 * ''Metandrocarpa taylori'' Huntsman, 1912 * ''Metandrocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunicate
A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata (). It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time called Urochordata, and the term urochordates is still sometimes used for these animals. They are the only chordates that have lost their myomeric segmentation, with the possible exception of the 'seriation of the gill slits'. Some tunicates live as solitary individuals, but others replicate by budding and become colonies, each unit being known as a zooid. They are marine filter feeders with a water-filled, sac-like body structure and two tubular openings, known as siphons, through which they draw in and expel water. During their respiration and feeding, they take in water through the incurrent (or inhalant) siphon and expel the filtered water through the excurrent (or exhalant) siphon. Most adult tunicates are sessile, immobile and perman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellular, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiton
Chitons () are marine molluscs of varying size in the class Polyplacophora (), formerly known as Amphineura. About 940 extant and 430 fossil species are recognized. They are also sometimes known as gumboots or sea cradles or coat-of-mail shells or suck-rocks, or more formally as loricates, polyplacophorans, and occasionally as polyplacophores. Chitons have a shell composed of eight separate shell plates or valves. These plates overlap slightly at the front and back edges, and yet articulate well with one another. Because of this, the shell provides protection at the same time as permitting the chiton to flex upward when needed for locomotion over uneven surfaces, and even allows the animal to curl up into a ball when dislodged from rocks. The shell plates are encircled by a skirt known as a girdle. Habitat Chitons live worldwide, from cold waters through to the tropics. They live on hard surfaces, such as on or under rocks, or in rock crevices. Some species live quite hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invertebrate
Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate subphylum Vertebrata. Familiar examples of invertebrates include arthropods, mollusks, annelids, echinoderms and cnidarians. The majority of animal species are invertebrates; one estimate puts the figure at 97%. Many invertebrate taxa have a greater number and variety of species than the entire subphylum of Vertebrata. Invertebrates vary widely in size, from 50 μm (0.002 in) rotifers to the 9–10 m (30–33 ft) colossal squid. Some so-called invertebrates, such as the Tunicata and Cephalochordata, are more closely related to vertebrates than to other invertebrates. This makes the invertebrates paraphyletic, so the term has little meaning in taxonomy. Etymology The word "invertebrate" comes from the Latin word ''vertebra'', whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
