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White Pox Disease
White pox disease (also "acroporid serratiosis" and "patchy necrosis"), first noted in 1996 on coral reefs near the Florida Keys, is a coral disease affecting Elkhorn coral ('' Acropora palmata'') throughout the Caribbean. It causes irregular white patches or blotches on the coral that result from the loss of coral tissue. These patches distinguish white pox disease from white band disease which produces a distinctive white band where the coral skeleton has been denuded. The blotches caused by this disease are also clearly differentiated from coral bleaching and scars caused by coral-eating snails. It is very contagious, spreading to nearby coral. At the locations where white pox disease has been observed, it is estimated to have reduced the living tissue in elkhorn corals by 50–80%. In the Florida Keys National Marine Sanctuary (FKNMS), the losses of living coral are estimated to average around 88%. Elkhorn coral was formerly the dominant shallow water reef-building ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitepox Disease
White pox disease (also "acroporid serratiosis" and "patchy necrosis"), first noted in 1996 on coral reefs near the Florida Keys, is a coral disease affecting Elkhorn coral (''Acropora palmata'') throughout the Caribbean. It causes irregular white patches or blotches on the coral that result from the loss of coral tissue. These patches distinguish white pox disease from white band disease which produces a distinctive white band where the coral skeleton has been denuded. The blotches caused by this disease are also clearly differentiated from coral bleaching and scars caused by coral-eating snails. It is very contagious, spreading to nearby coral. At the locations where white pox disease has been observed, it is estimated to have reduced the living tissue in elkhorn corals by 50–80%. In the Florida Keys National Marine Sanctuary (FKNMS), the losses of living coral are estimated to average around 88%. Elkhorn coral was formerly the dominant shallow water reef-building coral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurantimonas Coralicida
''Aurantimonas coralicida'' is a gram-negative bacterium, and a causative agent of white plague in Caribbean corals. It is rod-shaped, with polar flagella. Description An obligate aerobe, ''A. coralicida'' obtains its nourishment chemoheterotrophically. It tests positive for oxidase and catalase, and contains carotenoid pigments, possibly to protect against solar radiation. Role in Disease ''A. coralicida'' is believed to be the causative agent of white plague, a disease of some corals. This was first described in 1995 in an epizootic in reefs in the Florida Keys. 17 of 43 coral species in the area were infected, and up to 38% of infected corals died. Genetics The type strain of ''A. coralicida'' is WP1T(=CIP 107386T =DSM 14790T), which was the original strain isolated. History ''A coralicida'' was originally isolated as the cause of white plague in coral in the Caribbean in 1998. In 2003, the 16S rRNA sequence of the bacterium was compared to other known sequences to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Plague (coral Disease)
White plague is a suite of coral diseases of which three types have been identified, initially in the Florida Keys. They are infectious diseases but it has proved difficult to identify the pathogens involved. White plague type II may be caused by the gram negative bacterium '' Aurantimonas coralicida'' in the order Hyphomicrobiales but other bacteria have also been associated with diseased corals and viruses may also be implicated. History In 1977, a disease of scleractinian corals appeared on reefs off the Florida Keys in the United States and was termed white plague. It caused white lesions and was shown to be an infectious disease, being particularly prevalent in '' Mycetophyllia ferox''. This disease caused little mortality and occurred sporadically, but was still present in the area in 1984. It is now known as white plague type 1. In 1995, a new coral disease was described as an epizootic disease in the same reefs in the Florida Keys. Many species of coral found in the area w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Band Disease
White band disease is a coral disease that affects acroporid corals and is distinguishable by the white band of exposed coral skeleton that it forms. The disease completely destroys the coral tissue of Caribbean acroporid corals, specifically elkhorn coral (''Acropora palmata'') and staghorn coral (''A. cervicornis''). The disease exhibits a pronounced division between the remaining coral tissue and the exposed coral skeleton. These symptoms are similar to white plague, except that white band disease is only found on acroporid corals, and white plague has not been found on any acroporid corals. It is part of a class of similar disease known as "white syndromes", many of which may be linked to species of ''Vibrio'' bacteria. While the pathogen for this disease has not been identified, ''Vibrio carchariae'' may be one of its factors. The degradation of coral tissue usually begins at the base of the coral, working its way up to the branch tips, but it can begin in the middle of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protozoa
Protozoa (: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic debris. Historically, protozoans were regarded as "one-celled animals". When first introduced by Georg Goldfuss, in 1818, the taxon Protozoa was erected as a class within the Animalia, with the word 'protozoa' meaning "first animals", because they often possess animal-like behaviours, such as motility and predation, and lack a cell wall, as found in plants and many algae. This classification remained widespread in the 19th and early 20th century, and even became elevated to a variety of higher ranks, including phylum, subkingdom, kingdom, and then sometimes included within the paraphyletic Protoctista or Protista. By the 1970s, it became usual to require that all taxa be monophyletic (derived from a common ancestor that would also be regarded as protozo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Band Disease
Brown is a color. It can be considered a composite color, but it is mainly a darker shade of orange. In the CMYK color model used in printing and painting, brown is usually made by combining the colors orange and black. In the RGB color model used to project colors onto television screens and computer monitors, brown combines red and green. The color brown is seen widely in nature, wood, soil, human hair color, eye color and skin pigmentation. Brown is the color of dark wood or rich soil. In the RYB color model, brown is made by mixing the three primary colors, red, yellow, and blue. According to public opinion surveys in Europe and the United States, brown is the least favorite color of the public; it is often associated with fecal matter, plainness, the rustic, although it does also have positive associations, including baking, warmth, wildlife, the autumn and music. Etymology The term is from Old English , in origin for any dusky or dark shade of color. The first recorde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fungal
A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as one of the traditional eukaryotic kingdoms, along with Animalia, Plantae, and either Protista or Protozoa and Chromista. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi, like animals, are heterotrophs; they acquire their food by absorbing dissolved molecules, typically by secreting digestive enzymes into their environment. Fungi do not photosynthesize. Growth is their means of mobility, except for spores (a few of which are flagellated), which may travel through the air or water. Fungi are the principal decomposers in ecological systems. These and other differences place fungi in a single group of related organisms, named the ''Eumycota'' (''true fungi'' or ''E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Necrosing Syndrome
Black is a color that results from the absence or complete Absorption (electromagnetic radiation), absorption of visible spectrum, visible light. It is an achromatic color, without Colorfulness#Chroma, chroma, like white and grey. It is often used symbolically or figurative language, figuratively to represent darkness.Eva Heller, ''Psychologie de la couleur – effets et symboliques'', pp. 105–26. Black and white have often been used to describe opposites such as good and evil, the Dark Ages (historiography), Dark Ages versus the Age of Enlightenment, and night versus day. Since the Middle Ages, black has been the symbolic color of solemnity and authority, and for this reason it is still commonly worn by judges and magistrates. Black was one of the first colors used by artists in Neolithic cave paintings. It was used in ancient Egypt and Greece as the color of the underworld. In the Roman Empire, it became the color of mourning, and over the centuries it was frequently asso ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phormidium Corallyticum
''Phormidium'' is a genus of cyanobacteria in the family Oscillatoriaceae. As a result of recent genetic analyses, several new genera were erected from this genus, e.g. '' Potamolinea''. Species 83, including * ''Phormidium ambiguum'' * ''Phormidium allorgei'' * ''Phormidium aerugineo-caeruleum'' * ''Phormidium lucidum'' * ''Phormidium subfuscum'' Moved: * ''Phormidium africanum'' → '' Leptolyngbya africana'' * ''Phormidium formosum'' → '' Kamptonema formosum''LPSN List of Prokaryotic names with Standing in Nomenclature (LPSN) is an online database that maintains information on the naming and taxonomy image:Hierarchical clustering diagram.png, 280px, Generalized scheme of taxonomy Taxonomy is a practi ...Species ''Phormidium formosum'' References Cyanobacteria genera {{Cyanobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
