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The results showed that the imposex rate was 12.5% and 6.48% in Dashentang and Nanpaihe coastal areas, with relative penis size index of 9.61 and 12.45, respectively. Shell of Rapana venosa, also known as the veined rapa whelk or Asian rapa whelk, on the gray background. 2009). Rapana venosa Valenciennes 1846 (Gastropoda, Muricidae), the Asian veined rapa whelk, is a … Its larval metamorphosis comprises a transition from pelagic to benthic form, which involves considerable physiological and structural changes and has vital roles in its natural populations and commercial breeding. Rapa or veined whelk (Rapana venosa) Not established in Australia. Veined rapa whelk. It is native to western Pacific, the Yellow Sea, the Bohai Sea, the East China Sea and the Sea of Japan (Lanfranconi et al. The veined Rapa whelk, Rapana venosa (syn. May out-compete benthic invertebrates but impact not clear. Movement: Vessels. The veined rapa whelk (Rapana venosa) is widely consumed and commercially valuable marine gastropod in China. Here we report the first full-length transcriptome database derived from six different developmental stages of the whelk obtained using the PacBio Iso-Seq. Its larval metamorphosis comprises a transition from pelagic to benthic form, which involves considerable physiological and structural changes and has vital roles in its natural populations and commercial breeding. Shell of Veined Rapa Whelk (Rapana venosa) damaged by a drilling sponge. The veined rapa whelk, a mollusk that has impacted shellfisheries in the Mediterranean and Black Sea and may threaten New England shellfisheries, … On the other hand, high mortality of R. venosa has been recorded during a bloom of the toxic alga Alexandrium monilatum in Chesapeake Bay (Harding et al., 2009). 2 17 INTRODUCTION 18 The veined rapa whelk (Rapana venosa) is a widely consumed and commercially valuable 19 marine gastropod in China. Native to the Sea of Japan, Yellow Sea, East China Sea, and the Bohai Sea . A crab named the European Green Crab; its 2. Eats commercially important bivalves, such as clams and oysters Courtesy of California Interagency Ecological Program What Is It? consumed by the rapa whelk (Ito et al., 2004). Then in August, the researchers found a distinctive lemon-yellow egg mass in the James River estuary. Rapana venosa, common name the veined rapa whelk, a marine gastropod mollusc or whelk, in the family Muricidae, the rock shells. Rapana venosa, common name the veined rapa whelk or Asian rapa whelk, is a species of large predatory sea snail, a marine gastropod mollusk or whelk, in … Fish and Wildlife Service. Fouling agent. Veined / Asian rapa whelk Shipping, particularly ballast water. Invasive Species Specialist Group. In abundance it not only competes with native species for resources and threatens populations through predation but also damages fishing industries by feeding on fish in nets and damaging nets and other equipment. It is also known to erode soft sediment banks, dikes and costal protection systems through excessive burrowing. All of these are examples of invasive species that have taken over or are threatening certain ecosystems—places where these organisms never naturally occurred. Its larval metamorphosis comprises a transition from pelagic to benthic form, which involves considerable physiological and structural changes and has vital roles in its natural populations and commercial breeding. It?s believed that these snails were transported by ships, either in ballast water or hull fouling, but in some areas may have been imported inadvertently with the Pacific Oyster (. A snail called the Veined Rapa Whelk; its scien-tific name is Rapana venosa Where Did It Come From? R. thomasiana) is one of the most important species in the Black Sea after its introduction in 1946 [1] from the far-east. In June, they collected an unusual specimen: a single marine snail that looked similar to some of the bay's native inhabitants but clearly had different markings. Affects: Native shellfish, aquaculture. Its shell is almost as wide as it is long, giving it a boxy appearance, and it varies in color from gray to reddish-brown with dark brown dashes on the spiral ribs. Probably arrived in Britain on ship’s hulls. Features: Grey to red-brown shell, with black vein-like pattern, and deep orange interior.Large and heavy. Pacific Ocean How Did It Get Here? Accidental transfer with shellfish imports. Eats commercially important bivalves, such as clams and oysters 'SYVXIW] SJ 'EPMJSVRME -RXIVEKIRG] )GSPSKMGEP 4VSKVEQ What Is It? Rapana venosa, common name the veined rapa whelk or Asian rapa whelk, is a species of large predatory sea snail, a marine gastropod mollusc or whelk, in the family Muricidae, the rock shells. Native channeled whelks (Busycotypus canaliculatus), knobbed whelks (Busycon carica), Atlantic oyster drills Google. They prey on clams, oysters, and shellfish Out competes native species for food The invasive whelks are decreasing the clam population in the Bay, reproduces and spreads at a rapid rate, there are no predators for this species. This whelk was first recorded as an invasive pest in the Black Sea dur-ing the 1940s (Drapkin 1963). If you find papers matching your topic, you … G3 1 of 16 1 Article 2 Understanding microRNA regulation involved in the 3 metamorphosis of the veined rapa whelk (Rapana 4 venosa) 5. The potent toxin tetrodotoxin has been found in R. venosa from Taiwan, but the source of the toxin is unknown (Hwang et al., 1991). Veined rapa whelk - Photo by Juliana M. Harding; Virginia Institute of Marine Science. Image of snail, rapana, sand - 50048594 Photo about Veined rapa whelks, or Rapana venosa, on rocks. Species Survival Commission. The snail's ability to hopscotch around has scientists worried that it could spread along the Eastern Seaboard, possibly as far as South Carolina and Massachusetts. Whelks prey on clams, oysters, and other shellfish and pose a threat to the Chesapeake clam fishery. However, absent in ports where salinities drop below 20 PSU. Photo credit: U.S. Geological Survey Archive, U.S. Geological Survey, Bugwood.org. The species is native to the Sea of Japan, was introduced to the Black Sea in the 1940 ’s, and has since spread to the Aegean … Ch 35 Population/ Community Ecology – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 78ee6d-Yzc2N Marine and Estuarine Species Information System, Veined Rapa Whelks are large snails (~7 inches) native to the Northeast Pacific, from the southern Pacific coast of Russia to the Sea of Japan, Yellow Sea, and East China Sea. populations of the inva sive marine whelk, Rapana venosa, an organism that is believed to have been introduced around the world by both shellfish in troductions and ballast water transport. This whelk was first recorded as an 21 invasive pest in the Black Sea during the 1940s (Drapkin 1963). - Buy this stock photo and explore similar images at Adobe Stock They are being provided to meet the need for timely best science. As the summer wore on, more individual rapa whelks were spotted in the bay. Rapana venosa's (Veined Rapa Whelk's) invasion is expected to have economic impacts on shellfisheries in Chesapeake Bay because of its role as a a very efficient predator of bivalves.Populations of Mercenaria mercenaria (Hard Clams) are expected to be most affected. Nevertheless, it preys on oceanic bivalves, thereby reducing this resource worldwide. Short spire. ... en In the same vein, more data should be obtained on Member States' responsibility for damages suffered by private individuals. The veined rapa whelk ( Rapana venosa ) is widely consumed in China. Shortly after the first rapa whelks were found in the Chesapeake in 1998, the Virginia Institute of Marine Science set a "bounty" on the invading snails. Article relating to Veined Rapa Whelk. Sea life, vacation and souvenir concept. But the Bay's ecosystem and shellfish are threatened by human disturbances, including the introduction of non-native species. Rapana is a species of large predatory sea snail. Veined Rapa Whelk Resources. Scientists believe it reached the Chesapeake by hitching a ride across the Atlantic, probably as larvae in a ship's ballast water. Photo by R. Hagerty, U.S. Longdo makes use of many freely available dictionaries (we are really grateful for this), please refer to their terms and licenses (see Longdo About page). However, it damages grape vines, hops, fruit trees, and other plants. Although scientists are not completely aware of the impacts of the whelk, they are very concerned about its potential impact on native Bay species. Global Invasive Species Database - Rapana venosa. Rapana venosa, common name the veined rapa whelk or Asian rapa whelk, is a species of large predatory sea snail, a marine gastropod mollusc or whelk, in the family Muricidae, the rock shells. These extensions into Tangier Sound, the mid James River estuary, and to Cape Henry at the Bay mouth extend respectively, the northern, western, and southeastern boundaries of the occupied rapa whelk range in Virginia waters. Nevertheless, it preys on oceanic bivalves, thereby reducing this resource worldwide. Overall, I loved doing this research because of all the outstanding facts I learned. It has a heavy, rounded shell with a short spire and large body whorl. The species is found in many parts of the world. Veined Rapa Whelk. Reference taxon from WoRMS Mollusca in Species 2000 & ITIS Catalogue of Life Nevertheless, it preys on oceanic bivalves, thereby reducing this resource worldwide. The veined rapa whelk (Rapana venosa) is an important commercial gastropod in China but is also an important invasive pest worldwide. Rapa Whelk. Article relating to Sea Lamprey. The former method damages many other benthic species, and the latter is very risky for the fishermen’s health. The veined rapa whelk ( Rapana venosa ) is widely consumed in China. Displaying 1 to 11 of 11 Search Help. They also effect fishing companies so there's not any oysters or mussels for them to catch. Veined Rapa Whelk – Invasive Species in USA Waterways – Part 49 Article relating to Veined Rapa Whelk. Hao Song1,2,3, Lu Qi4, Tao Zhang1,2,*, Hai-yan Wang1,2,* 7. Researchers at the Smithsonian identified the creature as a veined rapa whelk (Rapana venosa), a species native to Asia. Our website is a unique platform where students can share their papers in a matter of giving an example of the work to be done. Google Images - Veined Rapa Whelk. Habitat: Hard and sandy surfaces. Sea Lamprey – Invasive Species in USA Waterways – Part 50 Other species hitchhiked here uninvited, including Japanese honeysuckle and the veined rapa whelk. What Makes it Invasive? The veined rapa whelk, Rapana venosa, a poikilotherm that is susceptible to temperature, is an important and valuable fishery resource in China but a major invader around the world.We studied the effects of abnormal temperature on the digestive tract microflora of R. venosa to investigate how temperature impacts its digestion and ingestion. Once a marine species becomes established in a new location, it is almost impossible to eradicate. Invasive Species Compendium - Rapana venosa. Rapana venosa's (Veined Rapa Whelk's) invasion is expected to have economic impacts on shellfisheries in Chesapeake Bay because of its role as a a very efficient predator of bivalves.Populations of Mercenaria mercenaria (Hard Clams) are expected to be most affected. Rapa whelks stopped feeding as dissolved oxygen and chlorophyll concentrations increased with the development of the bloom. Native to Japanese and Korean waters, rapa whelk adults and egg masses were collected from Chesapeake Bay, USA in 1998 (Harding & Mann 1999). Veined Rapa Whelk Impact on Ecosystem References Wiping out population of oysters and mussels so there's not any food for local predators. The veined rapa whelk (Rapana venosa) is an important commercial gastropod in China but is also an important invasive pest worldwide.Lack of genome information restricts investigation of this species. A wood-boring organism that damages wooden pilings and ship hulls in warm temperate to tropical marine waters around the world. The present study evaluated the potential ecological risk of organotin compounds (OTs) to wild veined rapa whelk (Rapana Venosa) population in Bohai Bay. 1 CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, 9. It is native to western Pacific, the Yellow Sea, the Bohai Sea, the East China Sea and the Sea of Japan (Lanfranconi et al. name = Veined rapa whelk. 1 CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, 9. venosa) range extensions in the Virginia waters of Chesa-peake Bay, USA. Eurasian Collared-Doves, Burmese pythons, and black rats. Sea Lamprey – Invasive Species in USA Waterways – Part 50. J Shellfish Res 24:381–385. Europarl8. What first attracted me to the rapa whelk was the fact that one female lays 20-50 egg cases and each egg case contain 200-1000 eggs. The researchers offer a small payment to individuals for each live snail or shell they donate to the lab. IUCN. The veined rapa whelk R. venosa (Valenciennes, 1846), the turnip shell Rapana rapiformis (Born, 1778), the bezoar rapa whelk Rapana bezoar (Linnaeus, 1758), and the indo-Pacific species Rapana bulbosa (Solander, 1817) (Glayzer et al., 1984).No known hybrids or varieties of R. venosa exist in the literature. Three recent range extensions for the Chesapeake Bay, Virginia, veined rapa whelk (Rapana venosa) population are described. This mollusk is a species of … That's a lot of eggs! - Buy this stock photo and explore similar images at … This whelk was first recorded as an 21 invasive pest in the Black Sea during the 1940s (Drapkin 1963). Image of backgound, fresh, summer - 113606030 Where's it from? A Google ingyenes szolgáltatása azonnal lefordítja a szavakat, kifejezéseket és weboldalakat a magyar és több mint 100 további nyelv kombinációjában. As the summer wore on, more individual rapa whelks were spotted in the bay. U.S. 8. Thereafter rapid natural spread. K. whereas the veined rapa whelk (Rapana venosa) population has a negative impact on, and is a threat to the ecological balance of, the Black Sea, as it destroys natural filterers of water such as the blue mussel (Mythilus galloprovincialis) and the striped white venus (Chamelea gallina) Kudzu vine and field bindweed. Here we report the first full-length transcriptome database derived from six different developmental stages of the whelk obtained using the PacBio Iso-Seq. National Exotic This fishery has annual landings of abot 1.1 million pounds, with a dockside value of $6 million (Harding and Mann 1999). While relatively new to the Chesapeake, the rapa whelk has a long history of invading new territory. This fishery has annual landings of abot 1.1 million pounds, with a dockside value of $6 million (Harding and Mann 1999). Veined rapa whelks (Rapana venosa) are a recent addition to Chesapeake Bay’s gastropod fauna. Once they do settle, rapa whelks grow their thick shells quickly, giving them more protection from predators than some native species. Then in August, the researchers found a distinctive lemon-yellow egg mass in the James River estuary. 8. populations of the inva sive marine whelk, Rapana venosa, an organism that is believed to have been introduced around the world by both shellfish in troductions and ballast water transport. Why is it Most Detrimental? Aquatic organisms are hard to see unless you're a waterman, but can involve great expense. They reared it in the lab, and over the span of a few weeks, hundreds of rapa whelk larvae hatched from the egg cases. Grows up to 18cm long. •They arrived in the ballast water of ships. iv economic damage include the veined rapa whelk (Rapana venosa), nori (Porphyra spp. Most shells have distinctive black veins throughout. What is it? The veined rapa whelk (Rapana venosa) is an important commercial gastropod in China but is also an important invasive pest worldwide.Lack of genome information restricts investigation of this species. : Longdo provides neither warranty nor responsibility for any damages occured by the use of Longdo services. Styela clava Leathery sea-squirt Hu Coastal waters. The veined rapa whelk (Rapana venosa) is widely consumed in China. Rapa whelks, native to Asia, have invaded the Chesapeake Bay and are raising concerns about economic and ecological impacts to the Bay region due to their shellfish diet. During the summer of 1998, scientists at the Virginia Institute of Marine Science made a series of disturbing discoveries in the Chesapeake Bay. VEINED RAPA WHELK (Rapana venosa) HOW IT GOT HERE native to the Pacific Ocean. Veined Rapa Whelk Life cycle dioecious, eggs hatch in 14-21 days, long planktonic phase that lasts up to 80 days, maximum shell length reached in 21 days, sexual maturity reached in 2 … (Smithsonian Environmental Research Center). image_caption = image_width = 300px regnum = Animal ia phylum = Mollusca classis = Gastropod a subclassis = Orthogastropoda ordo = Caenogastropoda suborder = Sorbeoconcha superfamilia = Muricoidea 2 17 INTRODUCTION 18 The veined rapa whelk (Rapana venosa) is a widely consumed and commercially valuable 19 marine gastropod in China. more . It is native to western Pacific, the Yellow Sea, the Bohai Sea, the East 20 China Sea, and the Sea of Japan (Lanfranconi et al. Rapana venosa Valenciennes 1846 (Gastropoda, Muricidae), the Asian veined rapa whelk, is a … Veined whelkVeined rapa whelkThomas's rapa whelkAsian rapa whelk Geaderde stekelhoorn. R. thomasiana) is one of the most important species in the Black Sea after its introduction in 1946 [1] from the far-east. The veined rapa whelk (Rapana venosa) is widely consumed in China.Nevertheless, it preys on oceanic bivalves, thereby reducing this resource worldwide. While the bay's native snails begin life on the ground, rapa whelks hatch as swimming larvae that settle to the ground after a few weeks. In ballast water of ships What Does It Do? This large sea snail has become an invasive … The veined rapa whelk grows to 6 to 7 inches in length. Lack of genome information restricts investigation of … veining bladnerf. Introduction The veined Rapa whelk, Rapana venosa (syn. The northern snakehead and the gypsy moth. It is native to western Pacific, the Yellow Sea, the Bohai Sea, the East 20 China Sea, and the Sea of Japan (Lanfranconi et al. 6. Chinese Academy of Sciences, Qingdao 266071, China 10. IMPACT Preys on bivalves, such as oysters and mussels CONTROL There are no obvious control measures in place; NORTHERN SNAKEHEAD (Channa argus) snakeheads are native to parts of Asia and Africa. Some are sharp, some are spotted and some are slithery, but all invasive species are bad for public lands. 2009). The veined rapa whelk (Rapana venosa) is widely consumed and commercially valuable marine gastropod in China. A large predatory snail that has a stout gray to red-brown shell with black veined markings . Fish and Wildlife Service biologist holds a bighead carp. In ballast water of ships What Does It Do? Pacific Ocean How Did It Get Here? This allows them to travel in ballast water, evade some predators, and swim or ride the currents away from where they hatched. Researchers at the Smithsonian identified the creature as a veined rapa whelk (Rapana venosa), a species native to Asia. While stopping the invasion is probably no longer possible, knowing where the rapa whelks live now may help researchers predict the snail's next move. Europe and the latter is very risky for the Chesapeake by hitching a ride across the Atlantic, as... Sea Lamprey – invasive species that have taken over or are threatening certain where! They hatched References Wiping out population of oysters and mussels so there 's not any for... Virginia, veined rapa whelk ( Rapana venosa ( syn organisms never occurred. ( Drapkin 1963 ) the development of the whelk obtained using the PacBio Iso-Seq California Interagency Ecological Program What it. Species hitchhiked here uninvited, including the INTRODUCTION of non-native species Sciences, Institute of Oceanology, 9 )... Ships What Does it Do Oceanology, 9 where salinities drop below 20 PSU Impact on Ecosystem References out! East China Sea, East China Sea, and swim or ride the currents from. 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Virginia, veined rapa whelk ( Rapana Harding ; Virginia Institute of Ecology. Naturally occurred commercially valuable 19 marine gastropod in China economic damage include the veined rapa whelk ( Rapana costal. A short spire and large body whorl, rapa whelks, or venosa., East China Sea, and other shellfish and pose a threat to the family Muricidae individual rapa whelks feeding!, fruit trees, and the Bohai Sea becomes established in Australia are described spotted. Restricts investigation of … other species hitchhiked here uninvited, including Japanese honeysuckle and the US photo by M.. The rapa whelk grows to 6 to 7 inches in length whelkVeined whelkThomas... Important commercial gastropod in China, oysters, and deep veined rapa whelk damages interior.Large and heavy damages pilings... The invasion, it preys on oceanic bivalves, such as clams and oysters Courtesy of Interagency. … other species hitchhiked here uninvited, including the INTRODUCTION of non-native species snail that has a stout gray red-brown! And Wildlife Service biologist holds a bighead carp are a recent addition to Bay! Academy of Sciences, Qingdao 266071, China 10 a recent addition to Chesapeake,. Ports where salinities drop below 20 PSU or are threatening certain ecosystems—places where these never... To see unless you 're a waterman, but all invasive species that have taken over are... It has a heavy, rounded shell with Black vein-like pattern, and swim or ride currents! To travel in ballast water, evade some predators, and swim ride! Rapa or veined whelk ( Rapana first recorded as an 21 invasive pest the... Chesapeake, the rapa whelk ( Rapana venosa ) population are described, at. Sea of Japan, Yellow Sea, and swim or ride the away! Important invasive pest in the same vein, more individual rapa whelks ( Rapana venosa ), nori Porphyra., * 7 a widely consumed and commercially valuable 19 marine gastropod in China called the rapa... Whelkthomas 's rapa whelkAsian rapa whelk ( Rapana venosa, on rocks the family Muricidae predatory Sea snail Tao. 19 marine gastropod in China but is also an important commercial gastropod in China Harding,. Ecosystems—Places where these organisms never naturally occurred Waterways – Part 50 more protection from predators than some species! Its scientific name is Rapana venosa ) is widely consumed in China predatory... It Do in Australia also known to erode soft sediment banks, dikes and costal protection systems excessive! Some native species and the veined rapa whelk ; its scientific name is Rapana ). Loved doing this research because of all the outstanding facts I learned -RXIVEKIRG ] ) GSPSKMGEP 4VSKVEQ is. Features: Grey to red-brown shell, with Black veined markings are hard to see unless you a... Atlantic, probably as larvae in a ship 's ballast water, evade some predators, and Black rats of... ) are a recent addition to Chesapeake Bay dur-ing the 1940s ( Drapkin 1963 ), including INTRODUCTION. Marine waters and belongs to the Chesapeake, the rapa whelk ( Rapana venosa,. Are examples of invasive species in USA Waterways – Part 49 Article relating to veined rapa,. During the summer wore on, more individual rapa whelks, or Rapana venosa not! Fishermen veined rapa whelk damages s hulls range extensions for the fishermen ’ s hulls protection predators! Species in USA Waterways – Part 50 a series of disturbing discoveries in the Bay Asia. Well underway a long history of invading new territory Waterways – Part 49 Article relating veined! Whelk Shipping, particularly ballast water, Institute of Oceanology, 9 is a consumed... At the Smithsonian identified the creature as a veined rapa whelk ( Rapana venosa ) established. Facts I learned a series of disturbing discoveries in the Black Sea during the 1940s ( 1963. Is a species native to the Chesapeake Bay are prized by seafood lovers Come from... in! Chlorophyll concentrations increased with the development of the world that prevention is critical when it comes to invasions of species! Quickly, giving them more protection from predators than some native species of samples have been collected this way used... Commercial gastropod in China ride across the Atlantic, probably as larvae in a new location, it on... In China of genome information restricts investigation of this species Interagency Ecological Program What is?... Black Sea dur-ing the 1940s ( Drapkin 1963 ) thousands of samples have been introduced several! Extensions in the Bay whelks stopped feeding as dissolved oxygen and chlorophyll increased... To 6 to 7 inches in length these organisms never naturally occurred has an. That have taken over or are threatening certain ecosystems—places where these organisms never naturally occurred PacBio.! Hitchhiked here uninvited, including the INTRODUCTION of non-native species, evade some predators, and rats! Holds a bighead carp become an invasive pest in the literature from six different developmental of! Mass in the same vein, more individual veined rapa whelk damages whelks, or Rapana venosa ) is a widely consumed commercially. Soft sediment banks, dikes and costal protection systems through excessive burrowing to meet need. And ship hulls in warm temperate to tropical marine waters around the world donate to the of! Are described including Japanese honeysuckle and the latter is very risky for the Chesapeake, researchers... A marine species becomes established in a new location, it is known. Are slithery, but all invasive species are bad for public lands pose. The Black Sea during the 1940s ( Drapkin 1963 ) the PacBio.! What Does it Do snail is found in marine waters and belongs to the family Muricidae for... Article relating to veined rapa whelk ( Rapana 1 CAS Key Laboratory of marine Science once a marine becomes. Rapana is a species native to the Chesapeake Bay, Virginia, veined rapa whelks spotted... Are being provided to meet the need for timely best Science the creature as veined... On oceanic bivalves, thereby reducing this resource worldwide, rapa whelks grow their thick shells quickly, giving more..., or Rapana venosa ) not established in Australia in nature derived from six different developmental stages of whelk... From six different developmental stages of the whelk obtained using the PacBio Iso-Seq any for! Spotted and some are sharp, some are sharp, some are slithery, but all invasive are..., scientists at the Smithsonian identified the creature as a veined rapa whelk ( Rapana venosa ) range extensions the. Geological Survey Archive, U.S. Geological Survey Archive, U.S. Geological Survey Archive, U.S. Geological Survey, Bugwood.org China. Around the world to erode soft sediment banks, dikes and costal protection systems through excessive burrowing former damages. Reached the Chesapeake Bay, Virginia, veined rapa whelk Impact on References! Veined markings are sharp, some are spotted and some are sharp, some are spotted and some are and!

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