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Dictyota Binghamiae
''Dictyota binghamiae'', commonly known as mermaid's glove, is a species of brown algae found in the eastern Pacific Ocean from British Columbia to Baja California. This species was named in honor of phycologist Caroline Bingham. Description ''D. binghamiae'' is a brown algae species that can reach up to 40 cm in length, with each branch between 1 and 1.5 cm in width. Blades are dichotomously branched with rounded tips and small marginal teeth. The color of the blade is darker at the base and lighter at the tips. Branches do not contain midribs. This species attaches to substrate using a flattened, irregularly shaped holdfast. New branches can sprout off directly from the holdfast. ''D. binghamiae'' can commonly be found with bore holes, which are caused by a copepods. Organisms can be male, female, tetrasporic, or possess no reproductive structures at all. Males possess white oval-shaped sori. Males with a high density of sori can appear rough or mottled in app ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birch Aquarium
Birch Aquarium at Scripps (sometimes referred to as Scripps Aquarium or Birch Aquarium) is an aquarium and the public outreach center for Scripps Institution of Oceanography at the University of California, San Diego. Accredited by the Association of Zoos and Aquariums, Birch Aquarium at Scripps has an annual attendance of more than 439,000, including more than 40,000 school children, and features more than 3,000 animals representing 380 species. The hilltop site provides views of the Scripps Institution of Oceanography campus and the Pacific Ocean. The mission of the aquarium reads: "At Birch Aquarium at Scripps, we connect understanding to protecting our ocean planet". History The aquarium was established in 1903 after the Marine Biological Association of San Diego was created to conduct marine research in the local waters of the Pacific Ocean. (Its name was later changed to Scripps Institution of Oceanography to honor supporters Ellen Browning Scripps and E.W. Scripps, part of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetrasporic
Tetraspores are red algae spores produced by the tetrasporophytic (diploid) phase in the life history of algae in the Rhodophyta as a result of meiosis.Jones, W.E. Revised and reprinted 1964. A Key to the genera of the British seaweeds.''Field Studies''. Vol 1 (4) pp.1 - 32 The name is derived from the 4 spores that form after this meiosis, the division is of three kinds: cruciate, zonate and tetrahedral In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons), also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners. The tetrahedron is the simplest of all the o .... References Red algae Reproduction {{rhodophyta-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diterpinoid
Diterpenes are a class of chemical compounds composed of four isoprene units, often with the molecular formula C20H32. They are biosynthesized by plants, animals and fungi via the HMG-CoA reductase pathway, with geranylgeranyl pyrophosphate being a primary intermediate. Diterpenes form the basis for biologically important compounds such as retinol, retinal, and phytol. They are known to be antimicrobial and antiinflammatory. Structures As with most terpenes a huge number of potential structures exists, which may be broadly divided according to the number of rings present. Biosynthesis Diterpenes are derived from the addition of one IPP unit to FPP to form geranylgeranyl-pyrophosphate (GGPP). From GGPP, structural diversity is achieved mainly by two classes of enzymes; the diterpene synthases and cytochromes P450. Several diterpenes are produced by plants and cyanobacteria. GGPP is also the precursor for the synthesis of the phytane by the action of the enzyme geranylgera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dictyotaceae
Dictyotaceae is large family (biology), family of brown algae (class Phaeophyceae). Members of this family generally prefer warmer waters than other brown algae. ''Lobophora variegata'' (= ''Pocockiella varieagata'') often presents a beautiful blue iridescence due to microscopic bacteria which live on the surface of the blades . A number of genera are known as forkweed (e.g. ''Dictyota'', ''Glosophora'', ''Dilophus'', ''Dictyopteris'', ''Pachydictyon'' and ''Lobospira''. References Further reading Algae Aquatic plants Brown algae families Dictyotaceae, Dictyotales Ochrophyta Plant families Plants described in 1822 Seaweeds {{Phaeophyceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stolon
In biology, stolons (from Latin '' stolō'', genitive ''stolōnis'' – "branch"), also known as runners, are horizontal connections between organisms. They may be part of the organism, or of its skeleton; typically, animal stolons are external skeletons. In botany In botany, stolons are stems which grow at the soil surface or just below ground that form adventitious roots at the nodes, and new plants from the buds. Stolons are often called runners. Rhizomes, in contrast, are root-like stems that may either grow horizontally at the soil surface or in other orientations underground. Thus, not all horizontal stems are called stolons. Plants with stolons are called stoloniferous. A stolon is a plant propagation strategy and the complex of individuals formed by a mother plant and all its clones produced from stolons form a single genetic individual, a genet. Morphology Stolons may or may not have long internodes. The leaves along the stolon are usually very small, but in a few ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexual Reproduction
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and physically similar to the parent or an exact clone of the parent. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and eubacteria, bacteria. Many Eukaryote, eukaryotic organisms including plants, animals, and Fungus, fungi can also reproduce asexually. In vertebrates, the most common form of asexual reproduction is parthenogenesis, which is typically used as an alternative to sexual reproduction in times when reproductive opportunities are limited. Komodo dragons and some monitor lizards can also reproduce asexually. While all prokaryotes reproduce without the formation and fusion of gametes, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subtidal
The neritic zone (or sublittoral zone) is the relatively shallow part of the ocean above the drop-off of the continental shelf, approximately in depth. From the point of view of marine biology it forms a relatively stable and well-illuminated environment for marine life, from plankton up to large fish and corals, while physical oceanography sees it as where the oceanic system interacts with the coast. Definition (marine biology), context, extra terminology In marine biology, the neritic zone, also called coastal waters, the coastal ocean or the sublittoral zone, refers to that zone of the ocean where sunlight reaches the ocean floor, that is, where the water is never so deep as to take it out of the photic zone. It extends from the low tide mark to the edge of the continental shelf, with a relatively shallow depth extending to about 200 meters (660 feet). Above the neritic zone lie the intertidal (or eulittoral) and supralittoral zones; below it the continental slope begi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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