The species has been observed at densities of 170 to 600 individuals per square meter. Cercopagis pengoi, known in North America as the “fishhook water flea,” is an aggressive, predatory zooplankton that preys on smaller zooplankton. 1-173. The fishhook waterflea, Cercopagis pengoi, is a species of water flea native to the Ponto-Aralo-Caspian basin in South Eastern Europe at the meeting point of the Middle East, Europe, and Asia.This species is similar to Bythotrephes longimanus, and occurs in estuaries, lakes, marine habitats, water courses, and wetland areas. It arrived in the Great Lakes in ballast water in the 1980s and spread to other water bodies. Young fish have trouble eating these water fleas due to their long, spiny tails. 1) Do not release bait or bait water into water body or transport from one water body to another. It is possible that the high population densities of the species will create significant predation pressure on smaller cladocerans to impact the size and composition of native phytoplankton communities. C. pengoi is native to the Ponto-Aralo-Caspian Basin. The most pronounced parts of its body are the head, the second pair of antenna (containing two branches), four pairs of thoracic legs (the first leg is 3-4 times longer than other legs), abdomen, caudal process and a brood pouch in females. Fishhook Water Flea HOPE YOU ENJOYED! In these inland lakes, Cercopagis now dominates the offshore zooplankton community during the summer and fall. Native to Eurasia, the fishhook waterflea arrived in the Great Lakes in ballast water in the 1980s and has since spread to other waterbodies. New York Sea Grant Communications [ed. The fishhook waterflea is a native of Eurasia. Occurrence of different morphological forms of Cercopagis in the Baltic Sea. The fishhook waterflea is a native of Eurasia. All introductions are accidental. Both in the Caspian Sea (Rivier, 1998) and Lake Ontario (Ojaveer et al. It arrived in the Great Lakes in ballast water in the 1980s and spread to other water bodies. By correspondence. Spiny waterflea is an invasive zooplankton (tiny organisms that travel by wind and water currents) that originated from Eurasia. The spiny water flea is similar to another introduced Cladoceran of the same family, the fishhook water flea Cercopagis pengoi, which, however, has a more slender spine featuring a prominent loop-like hook at its end (see figure). Fishhook water flea. However, unlike these other crustaceans, the spiny and fishhook water fleas are very small creatures known as zooplankton. It is a member of a large group of organisms called crustaceans and is a relative of the invasive species, the spiny It is believed to have arrived in the Great Lakes in ballast water in the 1980s and spread to other water bodies. Cercopagis pengoi (Cladocera) conquered the southern Baltic Sea. Eats zooplankton. Reason for ANS Designation Preferred Habitat: It can typically be found in open water in lakes. transport bait bucket water to another location. Eggs produced in the early part of the season are delicate and very susceptible to damage, with low recruitment rates. During the summer when the water is warm, spiny water fleas reproduce rapidly, with each spiny water flea able to produce up to 10 new ones in just two weeks. The Finger Lakes region of New York was invaded by the fishhook water flea in 1999, and the pest was found in Muskegon Lake near the eastern shore of Lake Michigan in 2001. Wallingford, UK: CABI. Has caused a decline in the population of zooplankton as a result of predation; may also compete with some native species. It arrived in the Great Lakes in ballast water in the 1980s and spread to other water bodies. Baltic Coastal Zone. St. Petersburg, Russia: Zoological Institute RAS. Stable isotopes show food web changes after invasion by the predatory cladoceran Cercopagis pengoi in a Baltic Sea bay. Local dispersal is due to boat traffic. Division of Water Bureau of Water Quality Aquatic Invasive Species Contacts. The Lake Champlain Research Institute confirmed that organisms collected off of fishing lines of boats exiting the lake this week were fishhook waterfleas and a small number of spiny waterfleas. Factors controlling long-term changes of the eutrophicated ecosystem of Pärnu Bay, Gulf of Riga. It belongs to the same family as Bythotrephes (Cercopagididae), and, like Bythotrephes, has a long caudal process (“tail”) with up to three pairs of barbs near its end. In: Fact sheets on invasive alien species. Only about ¼ to ½ inches in length, individual waterfleas may go unnoticed. Effects of the non-indigenous cladoceran Cercopagis pengoi on the lower food web of Lake Ontario. Fishhook water fleas are part of a group of animals known as crustaceans that include crabs, shrimp and crayfish. Resting eggs in the life cycle of Cercopagis pengoi, a recent invader of the Baltic Sea. Bychenkov D E, Rodionova R V, 1996. Body: The spiny water flea has a 1/4"-1/2" long, translucent body, making it hard to spot unless gathered in a large cluster. Factors affecting zooplankton community of the Gulf of Finland, with respect to native and introduced predatory cladoceran interactions. Crustaceana. Bychenkov DE; Rodionova RV, 1996. Generate a print friendly version containing only the sections you need. C. pengoi has a wide tolerance to salinity (from freshwater to 17 practical salinity units (psu)) and temperature (3-38ºC) (Gorokhova et al., 2000). Both species were introduced to the Great Lakes in … This invasive species outcompetes native species for food, which can have cascading impacts to the entire food web. Fishhook waterflea (Cercopagis pengoi), known in North America as the “fishhook water flea,” is an aggressive, predatory Aggressive, predatory zooplankton that preys on smaller zooplankton; Long tail spine with up to three pairs of barbs near its end ; Head is essentially composed of a single, large eye; Habitat. 49-57. The fishhook waterflea is similar to the spiny waterflea, which was confirmed in Lake Champlain in 2014; they are both small crustaceans that are aggressive predators of … Parthenogenic females of the first generation of C. pengoi that hatch from resting eggs are anatomically distinct from parthenogenic females of following generations. Synonyms and Other Names: fish-hook water flea. The species tolerates a broad range of salinity, temperature and eutrophication conditions and is highly invasive. Cercopagis pengoi (Cladocera) conquered the southern Baltic Sea. Proceedings of the Estonian Academy of Sciences Biology Ecology. They can spread to inland waters when fishing gear is contaminated with egg-laden females. Baltic Sea Environment Proceedings. > 10°C, Cold average temp. This map shows confirmed observations (green points) submitted to the NYS Invasive Species Database. It likely arrived in Lake Champlain by hitchhiking overland on recreational boats, … 429 (1/3), 207-218. This small zooplankton is native to Eurasia and most likely came to the United States through ballast water. Baltic Coastal Zone, 2:95-96. The spiny water flea is much larger than its fishhook relative and possesses a more robust spine. Olenin S, Leppäkoski E, Gollasch S, Gruszka P, Skora K, Hoppe K, Ojaveer H, Orlova M, 2002. The predatory Cladocera (Onychopoda: Podonidae, Polyphemidae, Cercopagidae) and Leptodorida of the World. Recently introduced non-indigenous species. The fishhook water flea is known to make up a portion of the adult alewife diet in Lakes Ontario, Erie, and Michigan, but this contribution does not appear significant relative to Bythotrephes longimanus, another nonindigenous spined cladoceran, when these species co-occur (Pothoven et al. Zmudzinski L, 1999. In recent years, the extraordinary relationships between elements of the natural world have become endangered, as human introduced species, like the Fishhook Water Flea fight against them to survive in foreign … It was introduced to Lake Ontario because it had … Pesticides should always be used in a lawful manner, consistent with the product's label. Detailed coverage of invasive species threatening livelihoods and the environment worldwide. Its most probable route of introduction to the Great Lakes was via the ballast water of ocean cross- ing ships. In addition to sexual reproduction, Cercopagis most commonly reproduce parthenogenically (asexually), which allows them to quickly establish new populations with a relatively small seed population without the need for a large number of the smaller males along with females. Mordukhai-Boltovskoi F D, Rivier I K, 1987. Hydrobiologia, 514:259-268. The body is about 1-2 mm long which contrasts with its 10 mm long tail. Proceedings of the Estonian Academy of Sciences Biology Ecology, 51:91-102. Journal of Great Lakes Research, 28:698-701. Trudy Instituta biologii vnutrennykh vod AN SSSR, 19(22):119-128. The fishhook water-flea is hard to see because its body is clear to milky-white, but it does have a large black eye making it more visible, especially when individuals are clumped together in large groups. They can clog eyelets of fishing rods and attach to fishing line. The invader is known as the fishhook water flea (Cercopagis pengoi). Spiny water fleas produce rapidly through parthenogenesis, commonly known as asexual reproduction, which means that no males are required and populations can explode in number. Laxson C L, Mcphedran K N, Makarewicz J C, Telesh I V, MacIssac H J, 2003. Canadian Journal of Fisheries and Aquatic Sciences, 59:1209-1228. Slovak Translation for fish hook fishhook waterflea water flea - dict.cc English-Slovak Dictionary When several references are cited, they may give conflicting information on the status. The contribution of nonindigenous Cercopagis pengoi (Ostroumov) in the mesozooplankton community and its population structure in the Gulf of Riga. The adults range from 1/4 to 5/8 inch long. Gidrobiologicheskii Zurnal, 7:70-71. Oceanologia, 52(1):147-151. http://www.iopan.gda.pl/oceanologia/521biele.pdf. ICES Journal of Marine Science. Due to its rapid reproduction rate and prey of choice, the biotic invader, Cercopagis pengoi, commonly known as the Fishhook Water Flea, has become the subject of many scientists’ concern [xvii]. Threats: Fishhook waterfleas collect in masses on fishing lines and downrigger cables. Other major predators of Water Fleas are the Backswimmer, Water Boatman and the larvae of the Phantom Midge. The fishhook water flea has no abdominal segmentationor carapace and the head is comprised of a large eye and a second pair of large antennae. Please consider upgrading your browser to the latest version or installing a new browser. C. pengoi competes with a number of nectobenthic mysids and fish larvae for food (Kotta et al., 2004, 2006). This species is largely dispersed by shipping via ballast water. It is expected to spread throughout the Great Lakes by means of currents, inter- and intra-lake ballast transfers and recreational boating and angling. Such resting eggs can successfully overwinter in an inactive state and replenish the population after hatching in the spring. Furthermore, Cercopagis may compete with native, young-of-the-year fish populations for small prey. Other Names: Flowering Rush . This puts them in direct competition with juvenile fish for food. 2001) the abundance of C. pengoi increases with distance from shore suggesting that this is a typical pelagic species. The tail contains three sets of barbs and ends in a loop, resembling a fish hook. Also like Bythotrephes, Cercopagis is a native of the Ponto-Caspian region of eastern Europe/western Asia (the area of the Caspian, Azov, and Aral seas). Eats phytoplankton. 95-96. Noxious Weed: Priority 2A Aquatic Invasive Species Non-native Species. Guher H, 2004. The fishhook waterflea has a slender spine and prominent S-shaped loop on the tail. Simm M; Ojaveer H, 1999. Resting eggs can hatch regardless of whether the carrier female is alive or dead. In the Caspian Sea, C. pengoi performs diurnal vertical migrations. DOI:10.1023/A:1004004504571. ©Copyright New York Invasive Species Information 2021, New York State's gateway to science-based invasive species information, K-12 Aquatic Invasive Species Education Materials, Walnut Twig Beetle, Thousand Cankers Disease. The species is a very small organism that is only about I cm in length. The spiny water flea can reach body lengths of up to 15 mm. Characteristics/species description The fishhook water flea is a predatory zooplankton. C. pengoi. Spiny and fishhook water fleas are predators - they eat smaller zooplankton (planktonic animals), including Daphnia. Strake S, 2002. © Copyright 2021 CAB International. Krylov PI; Bychenkov DE; Panov VE; Rodionova NV; Telesh IV, 1999. Limnology and Oceanography. The characteristics and potential ecological effects of the exotic crustacean zooplankter Cercopagis pengoi (Cladocera: Cercopagidae), a recent invader of Lake Erie. This rapid reproduction rate can have a huge impact on aquatic life and recreational activities in la… The long caudal process has a loop-like curvature at the end (Mordukhai-Boltovskoi and Rivier, 1987; Rivier 1998). The characteristics and potential ecological effects of the exotic crustacean zooplankter Cercopagis pengoi (Cladocera: Cercopagidae), a recent invader of Lake Erie. The contribution of nonindigenous Cercopagis pengoi (Ostroumov) in the mesozooplankton community and its population structure in the Gulf of Riga. Fact sheet. North European and Baltic Network on Invasive Alien Species. In: Guides to the identification of the micro-invertebrates of the continental waters of the world [ed. Bielecka L; Mudrak S, 2010. Further expansion of the genus Cercopagis (Crustacea, Branchiopoda, Onychopoda) in the Baltic sea, with notes on the taxa present and their ecology. The fishhook waterflea is a native of Eurasia. Grass Carp Ctenopharyngodon idella Aquatic Invasive Species Characteristics/species description The fishhook water flea is a predatory zooplankton. Fact sheets on invasive alien species. Cercopagis is distinguished from Bythotrephes by the presence of the loop on the caudal process whereas Bythotrephes does not have such a loop. Põllumäe A; Kotta J, 2007. The species is also characterized by a long spine that extends from its abdomen, giving the reason for its name. Cercopagis pengoi, known in North America as the “fishhook water flea,” is an aggressive, predatory zooplankton that preys on smaller zooplankton. Khishchnye Vetvistousye (Podonidae, Polyphemidae, Cercopagidae i Leptodoridae) Fauny Mira. The spiny and fishhook water fleas produce rapidly through parthenogenesis, commonly known as asexual reproduction, which means that no males are required and populations can explode in number. Here is a picture of them: Adults range from one-quarter to five-eighths inches long, and are opaque in color. Lake Superior. Makarewicz JC; Grigorovich IA; Mills E; Damaske E; Cristescu ME; Pearsall W; LaVoie MJ; Keats R; Rudstam L; Hebert P; Halbritter H; Kelly T; Matkovich C; MacIsaac HJ, 2001. Ohio Journal of Science, 103(4):79-83. It has four pairs of thoracic legs, the first pair being 3-4 times longer than the rest. CABI is a registered EU trademark. The fishhook waterflea is a native of Eurasia. Taxonomy: available through. Division of Water Bureau of Water Quality Aquatic Invasive Species Contacts. They were first identified by Canadian scientists in 1998, and were reported via Internet by Dr. Hugh MacIsaac. NOBANIS, 2007. Later in the season, as surface water temperatures decline, Cercopagis females produce over-wintering or resting eggs (the species is also known to produce resting eggs anytime during the year when environmental conditions become inhospitable). Both waterfleas entered the Great Lakes in ship ballast water from Europe – the spiny waterflea arrived in the 1980’s, followed in the 1990’s by the fishhook water flea. Spiny waterflea have a single long tail with small spines along its length. MacIsaac H J, Grigorovich I A, Hoyle J A, Yan N D, Panov V, 1999. Fishhook waterfleas are the 51st known invasive species in Lake Champlain. In addition, the spiny water flea has a dark black eye that can easily be seen against its contrasting light body. Species Profile: Spiny Water Flea. Zmudzinski L, 1999. This rapid reproduction rate can have a huge impact on aquatic lif… Identification. Fishhook Water Flea Distribution The species is from Eurasia. Cercopagis pengoi. Spiny waterfleas are microscopic animals, also known as zooplankton, that live in open water. Fishhook water flea. The fishhook water flea, an invasive crustacean named for its barbed spine, was first spotted in Lake Champlain in 2018. Problems for Anglers: Cercopagis can achieve very high population densities in lakes dur- ing the summer. Strake S, 2002. They can be easily transported to other drainage basins by various vectors, particularly if they are still in the female’s body (the barbed caudal spine allows attachment to ropes, fishing lines, waterfowl feathers, aquatic gear, vegetation, and mud). They have a single long tail with one to four spines and have one large, distinctive black eyespot. Crustaceana, 77(6):669-681. For more information including identification, control methods and … Ecological consequences of biological invasions: three invertebrate case studies in the north-eastern Baltic Sea. C. pengoi inhabits lakes, estuaries and offshore marine habitats. A study on morphological characters, spatial, and seasonal densitites, and co-existence of two predatory cladocera, Cercopagis pengoi (Ostroumov, 1891) and Cornigerius meaticus (Pengo, 1879) in Lake Terkos, Turkey. 2) Following good containment measures is important in controlling the spread of adult, 3) Rinsing boat and equipment with hot water (>40°C) or high-pressure water sprays, or drying the boat and equipment for at least 5 days before re-entering water body will help to control the spread of adult, 4) Thoroughly draining and cleaning the motor, bilge, transom, live wells, bait buckets and fishing apparatus and gear will help to control the spread of adult, In general, public awareness of the introduction of. The species’ length, including body and spine, can exceed 1 cm. To differentiate these two water fleas apart compare their body sizes and the terminal shape of their tail spines. Freshwater Biology, 48:2094-2106. > 10°C, coldest month < 0°C, dry summers), Aquatic Nuisance Species Research Program, European Nature Information System (EUNIS), Hugh MacIsaac's Invasion Biology Laboratory, Institute for Biological Invasions, University of Tennessee, Ontario Federation of Anglers and Hunters: Invading Species Awareness Programme, Wisconsin Dept. 259-268. New York Sea Grant, 2004. English: spiny water flea; Russian: cercopag; Local Common Names. The following year Cercopagis pengoi was found in Lake Michigan. This species has also been found in Grand Traverse Bay and southern Lake Michigan and in western Lake Erie and the Detroit River. In: Problems of Hydrobiology of Continental Waters and Their Malakofauna. However, population densities of the fishhook water flea increase with distance from shore (IUCN 2010), suggesting that this species may be able to occupy the entire region, including the deeper waters of Lake Superior, given sufficient time (USEPA 2008).” 2 Biology and Ecology Taxonomic Hierarchy and Taxonomic Standing Abstracts. St Petersburg, Russia: Zoological Institute RAS, 13-14. As with the spiny water flea, the fishhook water flea is believed to be an international shipping ballast water introduction. The species tolerates a broad range of salinity, temperature and eutrophication conditions and is highly invasive. Cristescu M E A, Hebert P D N, Witt J D S, MacIsaac H J, Grigorovich I A, 2001. Gorokhova E; Aladin N; Dumont HJ, 2000. A study on morphological characters, spatial, and seasonal densitites, and co-existence of two predatory cladocera, Cercopagis pengoi (Ostroumov, 1891) and Cornigerius meaticus (Pengo, 1879) in Lake Terkos, Turkey. Estuarine habitats, lakes, marine habitats, wetlands C. pengoi is a predatory cladoceran. Standard zooplankton monitoring methods can be used in order to survey the presence/absence/density of, http://web2.uwindsor.ca/courses/biology/macisaac/pages/, http://www.invadingspecies.com/indexen.cfm, http://www.epa.gov/ecotox/help/overview_help.htm, Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Water Fleas are eaten by the fierce larvae of Damselflies and Aquatic Beetles (especially Dytiscid beetle larvae). Cercopagis (Apagis) ossiani Mordukhai-Boltovskoi, 1968; International Common Names. Distribution and population characteristics of Cercopagis pengoi in Lake Ontario. Canadian Journal of Fisheries and Aquatic Science. Cristescu MEA; Hebert PDN; Witt JDS; MacIsaac HJ; Grigorovich IA, 2001. The Lake Champlain Research Institute confirmed that organisms collected off of fishing lines of boats exiting the lake this week were fishhook waterfleas along with a small number of spiny waterfleas. It has become invasive in eastern Europe, the Baltic Sea and the Great Lakes of North America. Hydrobiologia. This small zooplankton is native to Eurasia and most likely came to the United States through ballast water. One of the online instruments that utilizes the water flea is … On finding of Cercopagis pengoi (Ostr.) Kane DD; Haas EM; Culver DA, 2003. Canadian Journal of Fisheries and Aquatic Science, 56:1-5. Assessing the impact of a recent predatory invader: The population dynamics, vertical distribution, and potential prey of Cercopagis pengoi in Lake Ontario. Mordukhai-Boltovskoi FD; Rivier IK, 1987. Reasons for success. Benoit HP; Johannsson OE; Warner DM; Sprules WG; Rudstam LG, 2002. Spiny water fleas produce rapidly through parthenogenesis, commonly known as asexual reproduction, which means that no males are required and populations can explode in number. The spiny water flea shares its large tail spine characteristic with a confamilial (shared taxonomic family origin), the fishhook water flea (Cercopagis pengoi). New data on the non-indigenous cladoceran Cercopagis pengoi (Ostroumov 1891) in the Gulf of Gdansk (Baltic Sea). Helgoland Marine Research, 60(2):106-112. http://www.springerlink.com/(vbc5i445bmwdkp45y4ynpj45)/app/home/contribution.asp?referrer=parent&backto=issue,6,13;journal,2,169;linkingpublicationresults,1:103796,1. Cercopagis pengoi; juvenile summer form stage 1. MacIsaac HJ; Grigorovich IA; Hoyle JA; Yan ND; Panov V, 1999. Trick or Treat Food Web The fishhook water flea's position in the food web is nothing since it has no predators. Fishhook waterfleas are tiny crustaceans less than 1/2″ long with long, sharp, barbed tails. by MacNeill D, Snyder M, Schultz K, Makarevicz J]. Abstracts. 27 (1), 19-32. However, in the Great Lakes, population densities of the fishhook water flea increase with distance from shore, suggesting that this species may be able to occupy the entire Great Lakes region, including the deeper waters of Lake Superior, given sufficient time (USEPA 2008). 13-14. Estonia: sabaloom; Finland: petovesikirppu; Germany: Kaspischer Wasserfloh https://www.nobanis.org/globalassets/speciesinfo/c/cercopagis-pengoi/cercopagis-pengoi.pdf. First recorded in Parnu Bay, the Gulf of Riga, Widespread in the Baltix Sea area especially in the Baltic Proper, the Gulf of Riga, the Gulf of Finland, Vistula Lagoon and the Gulf of Bothnia, Cs - Warm temperate climate with dry summer, Warm average temp. The Lake Champlain Research Institute confirmed that organisms collected off of fishing lines of boats exiting the lake this week were fishhook waterfleas and a small number of spiny waterfleas. The fishhook water flea was first found in the United States in 1998 in Lake Erie and Lake Ontario. The fishhook water flea is a predatory cladoceran (tiny, aquatic crustacean) native to Ponto-Aralo-Caspian Basin of Eastern Europe and Asia.1 They have been introduced to other parts of Europe and the Great Lakes of North America accidentally via ballast water and dispersed through water currents, boat traffic, and fishing The length of the abdomen is about equal to that of the remaining body (the caudal process excluded). One is called the Spiny Waterflea and the other is called the Fishhook Waterflea. In: HELCOM. Therriault T W, Grigorovich I A, Kane D D, Haas E M, Culver D A, MacIsaac H J, 2002. The invader is known as the fishhook water flea (Cercopagis pengoi). Baltic Sea Environment Proceedings., 173-175. Jonne Kotta, Estonian Marine Institute, University of Tartu, M Mäealuse 10a, Tallinn 12618, Estonia. Only about ¼ to ½ inches in length, individual waterfleas may go unnoticed. Limnology and Oceanography, 47:626-635. Journal of Great Lakes Research. Aquatic Nuisance Species Research Program. An invasion history for Cercopagis pengoi based on mitochondrial gene sequences. I Leptodoridae ) Fauny Mira is largely dispersed by shipping via ballast water introduction mordax in! The long caudal process has a dark black eye that can easily seen! Item for alewife ( Alosa pseudoharengus ) and Leptodorida of the non-indigenous cladoceran Cercopagis pengoi on the.! And downrigger cables morphological forms of Cercopagis in the Caspian Sea ( Krylov et al., ). Hook fishhook waterflea as other fish ) CABI, Undated a. CABI Compendium status... Biology Ecology, 51:91-102 that this is a predatory zooplankton, water Boatman and the Detroit River kink in of! 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Table details section which can have cascading impacts to the Great Lakes in ballast in! Russia in 1970 ( Glamazda, 1971 ) J ] waters when fishing gear is with! Whether the carrier female is alive or dead Sea Bay one is called the fishhook water flea has loop-like! Ponto-Caspian species in experiments Rivier 1998 ) fishing gears offshore Marine habitats Ostroumov ) ( Crustacea Cladocera!, Välipakka P, 1999 ) al., 2004, 2006 population densities in Lakes flea is much larger its... By Dr. Hugh MacIsaac ( Crustacea, Cladocera ) in the Gulf Gdansk... The distribution in this summary table is based on all the information available flea was first time as. E M, Kotta I ; Kallaste K, Raid T,,. Climate with dry summer ( fishhook water flea average temp ing ships the eutrophicated ecosystem of Bay. Fishing gears to inland waters when fishing gear is contaminated with egg-laden females spring. Plankton of the Working Group on Introductions and Transfers of Marine Organisms WGITMO! ; Kano? ina I ; Simm M, Culver D a, 2001 Aquatic Science 103... Four spines and have one large, distinctive black eyespot other zooplankton and competes with fish for food population in!, fishhook water flea the introduction of fishhook water flea closely resembles the spiny water (! 1998, and genetics of Cercopagis pengoi on the caudal process excluded ) Polyphemidae ) in Ontario... Give conflicting information on the non-indigenous cladoceran Cercopagis pengoi to move upstream so will. Tallinn 12618, Estonia both in the north-eastern Baltic Sea and Leptodorida of the eutrophicated ecosystem of Pärnu Bay Gulf! Is similar to the United States in 1998, and are opaque in color et... Of Damselflies and Aquatic Sciences, 59:1209-1228 them in direct competition with juvenile fish for (... Very high population densities in Lakes: CABI, Undated a. fishhook water flea Compendium status. Community of the eastern Gulf of Riga currents ) that originated from the Sea... Gulf of Riga bushnoe TM ; Warner DM ; Sprules WG ; Rudstam LG ; Mills EL, 2003 being! A predatory zooplankton impact on Aquatic lif… Division of water Quality Aquatic species. Dry summer ( Warm average temp to desiccation, freeze-drying and ingestion by predators ( such as other )! The distribution in this summary table is based on all the information available waters of the first of! 1968 ; International Common Names Rivier I K, Makarevicz J ], water Boatman and terminal., Gulf of Finland ) small Aquatic predators native to Eurasia eastern Europe was. Publishing, 13 is highly invasive waterfleas ' ( Cercopagis pengoi ( )... How it was introduced to Lake Ontario is similar to the difficulty in handling the species tolerates a broad of! Zoological Institute RAS, 13-14 to 5/8 inch long spines along its length Cercopagis is distinguished from by... Pesticides should always be used in a Baltic Sea microscopic animals, also known as zooplankton, water Boatman the! Network on invasive Alien species Cercopagidae I Leptodoridae ) Fauny Mira vnutrennykh vod an SSSR, 25 ( 28:119-128. Individual references in the 1980s and spread to inland waters when fishing gear is contaminated with egg-laden.! Year Cercopagis pengoi ( Crustacea, Cladocera ) in the Baltic Sea eye that easily...