AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Caprella mutica | |
Date of the first record (?) | 2002 References (not structured): Ashelby CW (2005) The occurrence and distribution of nonnative fauna in Harwich Harbour and the Stour and Orwell estuaries, including new records of Caprella mutica Schurin 1935 and Bugula stolonifera Ryland 1960. Essex Naturalist 22: 103-116. Comments: First recorded in Harwich in June 2002. |
Recipient region (?) | Country: United Kingdom (Britain) LME: 22. North Sea References (not structured): Ashelby CW (2005)The occurrence and distribution of non-native fauna in Harwich Harbour and the Stour and Orwell estuaries, including new records of Caprella mutica Schurin 1935 and Bugula stolonifera Ryland 1960. Essex Naturalist 22: 103-116. Comments: Found in trawl samples from the Orwell River. Also known from the Orkneys with first record 2006: Kakkonen JE, Worsfold TM, Ashelby CW, Taylor A, Beaton K (2019) The value of regular monitoring and diverse sampling techniques to assess aquatic non-native species: a case study from Orkney. Management of Biological Invasions 10(1): 46–79, https://doi.org/10.3391/mbi.2019.10.1.04 (and references therein). |
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Source region (?) | Ocean: Pacific --> Ocean region: NW Pacific References (not structured): Ashton GV, Willis KJ, Cook EJ (2007)Distribution of the introduced amphipod, Caprella mutica Schurin on the west coast of Scotland, and a review of its global distribution. Hydrobiologia 590: 31-41. Arimoto I (1976) Taxonomic studies of caprellids (Crustacea, Amphipoda, Caprellidae) found in the Japanese adjacent waters. Special publications from the Seto Marine Biological Laboratory Series III, Nippon Printing & Publishing Co., Ltd, Osaka, Japan, 111 pp. Comments: The species is native to the Peter the Great Bay and southwards to Japan. |
Pathway / Vector (?) | Level of certainty: Possible Pathway: Culture activities Pathway: Leisure activities Pathway: Live food trade Pathway: Natural spread from neighboring countries Vector: Other natural vectors Pathway: Vessels Vector: Ballast water Vector: Ship’s hull References (not structured): Cook EJ, Jahnke M, Kerckhof F, Minchin D, Faasse M, Boos K, Ashton G (2007) European expansion of the introduced amphipod Caprella mutica Schurin 1935. Aquatic Invasions 2: 411-421. Frey MA, Gartner HN, Murray CC, Therriault TW (2009) First confirmed records of the non-native amphipod Caprella mutica (Schurin, 1935) along the coast of British Columbia, Canada, and the potential for secondary spread via hull fouling. Aquatic Invasions 4: 495–499. Sano M, Omori M, Taniguchi K (2003) Predator-prey systems of drifting seaweed communities off the Tohoku coast, northern Japan, as determined by feeding habit analysis of phytal animals. Fishery Science 69: 260–268. Willis KJ, Cook EJ, Lozano-Fernandez M, Takeuchi I (2004) First record of the alien caprellid amphipod, Caprella mutica, for the UK. Journal of the Marine Biological Association of the United Kingdom 84: 1027-1028. Comments: Was introduced to Europe either directly from Asia or from the Atlantic coast of North America. Its arrival to Britain may have been from boat hull fouling or with well boats transporting salmon smolts or as a result of being transported on drift materials to which it attached. It is possible that movements of species used for aquaculture or stocking may have been involved in local spread. Its arrival to the east coast of Britain in incompletely known. |
Habitat type (?) | Aquaculture sites Marina Offshore Port vicinity Ports Sheltered coastal area References (not structured): Cook EJ, Jahnke M, Kerckhof F, Minchin D, Faasse M, Boos K, Ashton G (2007) European expansion of the introduced amphipod Caprella mutica Schurin 1935. Aquatic Invasions 2: 411-421. Ashelby CW (2005) The occurrence and distribution of nonnative fauna in Harwich Harbour and the Stour and Orwell estuaries, including new records of Caprella mutica Schurin 1935 and Bugula stolonifera Ryland 1960. Essex Naturalist 22: 103-116. Ashton GV, Willis KJ, Cook EJ (2007a)Global distribution of the Japanese Skeleton Shrimp, Caprella mutica(Crustacea, Amphipoda, Caprellidae) with a detailed account of the distribution in Scotland, U.K. Hydrobiologia 590: 31–41. Comments: The species is widely distributed from close inshore to offshore structures that include fishfarms and oil platforms. |
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Wave exposure (?) | Exposed Semi exposed Sheltered References (not structured): Ashton GV, Willis K, Burrows M, Cook EJ (2007) Environmental tolerance of Caprella mutica: implications for its distribution as a non-native species. Marine Environmental Research 64: 305–312. Comments: Clearly can occupy structures exposed to wave action and also to marinas in sheltered environments. |
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Salinity range (?) | Exact range: 3 - 35 References (not structured): Ashton GV, Willis K, Burrows M, Cook EJ (2007) Environmental tolerance of Caprella mutica: implications for its distribution as a non-native species. Marine Environmental Research 64: 305–312. Comments: Most caprellida have an ability to endure a wide range of salinities. |
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Temperature range (?) | Min: 2 Max: 28 References (not structured): Ashton GV, Willis K, Burrows M, Cook EJ (2007) Environmental tolerance of Caprella mutica: implications for its distribution as a non-native species. Marine Environmental Research 64: 305–312. GOSTA8 (1995) Global ocean surface temperature ATLAS-8 (September 2005). http:www.podacc.jpl.nasa.gov/cdrrom/gostaplus_hdf/order.htm Comments: Data currently collected relates to measurements on the west coast of Scotland the species almost certainly can endure winter temperatures of 4 oC and higher summer temperatures within its invasive range. In its native range satellite sea surface temperatures show a possible range of 0 to 21 oC. |
Zonation / Substratum (?) | Benthic and Pelagic: Littoral (Benthic) Littoral (Pelagic) Neritic Offshore Sublittoral within photic zone Substratum: Artificial (manmade) Biogenic (living or nonliving) References (not structured): Cook EJ, Jahnke M, Kerckhof F, Minchin D, Faasse M, Boos K, Ashton G (2007) European expansion of the introduced amphipod Caprella mutica Schurin 1935. Aquatic Invasions 2: 411-421. Comments: Tenaceously attaches to fouling including marine algae, even filamentous algae. A predatory species, which also behaves as a suspension feeder. |
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Reproductive duration (?) | Long References (not structured): Ashton GV, Willis K, Burrows M, Cook EJ (2007) Environmental tolerance of Caprella mutica: implications for its distribution as a non-native species. Marine Environmental Research 64: 305–312. Comments: Can reproduce after hatching to produce their first brood at 53 days at temperatures of 13-14 oC. Females can produce two broods about 20 days apart. | |
Reproductive seasonality (?) | May Jun. Jul. Aug. Sept. Oct. References (not structured): Ashton GV, Willis K, Burrows M, Cook EJ (2007) Environmental tolerance of Caprella mutica: implications for its distribution as a non-native species. Marine Environmental Research 64: 305–312. Comments: The population peaks from June to October. Females attain maturity once 7 mm length and can produce two broods averaging ~25 per brood and may live for 2.5 months under laboratory conditions. |
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Migration pattern (?) | Unknown |
Population status (?) | Abundant (Moderate level of certainty) References (not structured): Ashelby CW (2005) The occurrence and distribution of nonnative fauna in Harwich Harbour and the Stour and Orwell estuaries, including new records of Caprella mutica Schurin 1935 and Bugula stolonifera Ryland 1960. Essex Naturalist 22: 103-116. Cook EJ, Jahnke M, Kerckhof F, Minchin D, Faasse M, Boos K, Ashton G (2007) European expansion of the introduced amphipod Caprella mutica Schurin 1935. Aquatic Invasions 2: 411-421. Comments: A widely distributed species able to tolerate a wide range of conditions and is expected to expand its range further. |
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Species status (?) | Non-indigenous species References (not structured): Willis KJ, Cook EJ, Lozano-Fernandez M, Takeuchi I (2004) First record of the alien caprellid amphipod, Caprella mutica, for the UK. Journal of the Marine Biological Association of the United Kingdom 84: 1027-1028. |
Ports | Port #1/3: Harwich Date of the first record: 2002 Population status: Common References: Ashelby CW (2005) The occurrence and distribution of nonnative fauna in Harwich Harbour and the Stour and Orwell estuaries, including new records of Caprella mutica Schurin 1935 and Bugula stolonifera Ryland 1960. Essex Naturalist 22: 103-116 Comments: Found in the harbour Port #2/3: Kirkwall Date of the first record: 2012 Population status: Common Port #3/3: Scapa Flow Date of the first record: 2012 Population status: Common Comments: Found in navigation buoys and mooring chain/ropes. |
Port vicinities | Port vicinity #1/3: Harwich Date of the first record: 2002 Population status: Common References: Ashelby CW (2005) The occurrence and distribution of nonnative fauna in Harwich Harbour and the Stour and Orwell estuaries, including new records of Caprella mutica Schurin 1935 and Bugula stolonifera Ryland 1960. Essex Naturalist 22: 103-116 Comments: Found in estuaries close to Harwich port Port vicinity #2/3: Kirkwall Date of the first record: 2012 Population status: Common Port vicinity #3/3: Scapa Flow Date of the first record: 2012 Population status: Common |
Created by | Dan Minchin, 2013-03-09 |
Last update by | Stephan Gollasch, 2020-02-07 |