AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Eriocheir sinensis [WoRMS] | |
Authority | H. Milne Edwards, 1853 | |
Family | Varunidae | |
Order | Decapoda | |
Class | Malacostraca | |
Phylum | Arthropoda | |
Synonym (?) | Eriocheir sinensis f. acutifrons (Panning, 1938) Eriocheir sinensis f. rostratus (Panning, 1938) Eriocheir sinensis f. rotundifrons (Panning, 1938) |
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Sub-species level (?) | Not entered |
Native origin (?) | Country: China --> LME: 36. South China Sea --> LME: 47. East China Sea Comments: Pacific NW |
Life form / Life stage (?) |
References (not structured): Anger K (1991) Effects of temperature and salinity on the larval development of the Chinese mitten crab Eriocheir sinensis (Decapoda: Grapsidae). Marine Ecology Progress Series, Volume 72: 103-110pp Comments: A characteristic feature is the mitten like "fur" on the claws. Larval development consists normally of a prezoea, 5 zoeal stages, and a megalopa and disperse with water currents, juveniles and adults show active migration (can migrate up to ca 1000 km upstream while growing to adult size) |
Sociability / Life stage (?) |
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Reproductive frequency (?) | Semelparous References (not structured): Kaestner A (1970) III. Crustacea. Invertebrate Zoology. John Wiley and Sons Inc., New York, 523 pp. Comments: Both males and females are thought to die following reproduction |
Reproductive type (?) | Sexual References: Kaestner A (1970) III. Crustacea. Invertebrate Zoology. John Wiley and Sons Inc., New York, 523 pp Rudnick D, Veldhuizen T, Tullis R, Culver C, Hieb K, Tsukimura B (2005) A life history model for the San Francisco Estuary population of the Chinese mitten crab, Eriocheir sinensis (Decapoda: Grapsoidea). Biological Invasions, Volume 7:2, 333 – 350 Comments: Young mitten crabs molt once every 2 weeks. ‘Age 1’ crabs are hatchlings from the previous calendar year and by this stage, their their abdominal shape is clearly differentiated and their sex can be identified. At the begining of age 2, crabs can range in size from 25–49 mm and are progressing to sexual maturity as well as increased growth of setae on the walking legs, increase in fullness of the mittens of setae on the front claws, particularly in males and the sperm ducts become fully developed and clearly visible when the abdomen is lifted away from the carapace, while in females, setae begin to form around the outer edge of the abdomen and the abdomen becomes more rounded and fills in a larger portion of the underside of the carapace |
Developmental trait (?) | Brooding References: Anger, K. (1991). Effects of temperature and salinity on the larval development of the Chinese mitten crab Eriocheir sinensis(Decapoda: Grapsidae). Marine ecology progress series. Oldendorf, 72(1), 103-110. References: Anger K (1990) Der Lebenszyklus der Chinesischen Wollhandkrabbe (Eriocheir sinensis) in Norddeutschland: Gegenwärtiger Stand des Wissens und neue Untersuchungen. Seevogel, 11, (2), 32-37 pp. Comments: (Anger, 1990, 1991): Ovigerous females can brood between 250 000 to 1 million eggs. Females brood the eggs and, upon hatching, larvae are planktonic for one to two months. During this marine free-swimming phase, larvae pass through a series of developmental stages: a brief non-feeding pre-zoea stage, five zoea stages and one megalopea stage. Pelagic larval development comprises a total of 5 zoeal stages and 1 megalopa; an additional zoea stage (transitional to the juvenile) were occasionally observed under unfavourable conditions with low salinity (5 to 15 psu). |
Characteristic feeding method / Life stage (?) |
References (not structured): Panning A (1938) The chinese Mitten Crab. Smithsonian Rep, 361-375 pp Comments: Chinese mitten crabs feed on a wide variety of plants, invertebrates, fishes and detritus. crab is known to be predominantly omnivorous, although feeding habits may shift throughout the life cycle. The larvae feed on phytoplankton and zooplankton, while the diet of newly settled juveniles consists mostly of aquatic plants. As they grow, crabs become more carnivorous. |
Mobility / Life stage (?) |
References: Anger, K. (1991). Effects of temperature and salinity on the larval development of the Chinese mitten crab Eriocheir sinensis(Decapoda: Grapsidae). Marine ecology progress series. Oldendorf, 72(1), 103-110. References (not structured): Anger K (1990) Der Lebenszyklus der Chinesischen Wollhandkrabbe (Eriocheir sinensis) in Norddeutschland: Gegenwärtiger Stand des Wissens und neue Untersuchungen. Seevogel, 11, (2), 32-37 pp Comments: (Anger, 1990, 1991): Patterns of ontogenetic change in salinity tolerance are interpreted as an adaptation to patterns of larval dispersal presumably occurring in the field: (1) hatching in brackish water of outer estuaries; (2) offshore (near-surface) transport during zoeal development, with late stages living predominantly under marine conditions; (3) onshore (near-bottom) transport of the megalopa; (4) settlement in any part of an estuary, probably most frequently at ca 15 to 25 psu. Adults live in fresh waters; egg-laying and hatching takes place in estuaries or coastal regions. Larvae migrate into fresh water and crabs can migrate up river long distances, up to 1300 km. Ovigerous October-January, larvae March-July. |
Salinity tolerance range (?) | Venice system: 1. Limnetic [<0.5psu] 2. β-Oligohaline [0.5-3psu] 3. α-Oligohaline [3-5psu] 4. β-Mesohaline [5-10psu] 5. α-Mesohaline [10-18psu] 6. Polymixohaline [18-30psu] 7. Euhaline [30-40psu] References: Anger, K. (1991). Effects of temperature and salinity on the larval development of the Chinese mitten crab Eriocheir sinensis(Decapoda: Grapsidae). Marine ecology progress series. Oldendorf, 72(1), 103-110. References: Additional sources: Summerson, R., Darbyshire, R., & Lawrence, E. (2007). Invasive marine species range mapping. Australian Government, Bureau of Rural Sciences. 25-27.08.2004, Book of Abstracts: 17-18. Gollasch S, Leppakoski E 1999. Initial Risk Assessment of Alien Species in Nordic Coastal Waters. Nord, 8: 7-124 Gruszka (1999) The river Odra estuary as a gateway for alien species immigration to the Baltic Sea Basin. Acta hydrochimica et hydrobiologica, 27(5): 374-382. Eriocheir sinensis, 2002. http://www.ciesm.org/atla /Eriocheirsinensis.html Comments: (Anger, 1991): metamorphosis is, after a gradual adaptation during megalopa development, possible in principle at any salinity. When larvae were reared in seawater until they reached the megalopa stage and then transferred to lower salinities, development to the first juvenile instar was also possible at <5 psu, exceptionally even in freshwater. Development time increased at unfavorably low or high salinities (i.e. where mortality also increased). Zoea I was very euryhaline, with an optimum in slightly brackish water (25 psu). During subsequent zoeal development, the larvae became increasingly stenohaline, and their optimum shifted to seawater. The megalopa, in contrast, was euryhaline again and developed fastest in lower salinities (15 to 25 psu). |
Habitat modifying ability potential (?) | Keystone species References: Rudnick D, Veldhuizen T, Tullis R, Culver C, Hieb K, Tsukimura B (2005) A life history model for the San Francisco Estuary population of the Chinese mitten crab, Eriocheir sinensis (Decapoda: Grapsoidea). Biological Invasions, Volume 7:2, 333 – 350 Comments: competes for space and food especially during mass developments which can impact freshwater and estuarine food webs at many levels, as it has an opportunistic diet that includes algae, detritus, and a variety of benthic macroinvertebrates. |
Toxicity / Life stage (?) | Not relevant Comments: The species is known as delicacy and is traded on Asian markets for human consumption. |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Wang, L., Yang, X., Wang, Q., & Wang, D. (2000). The accumulation of Cd~(2+) and the effect on est in five tissues and organs of eriocheir sinensis. Acta zoologica Sinica, 47, 96-100. Che, R. O., & Cheung, S. G. (1998). Heavy metals in Metapenaeus ensis, Eriocheir sinensis and sediment from the Mai Po marshes, Hong Kong. Science of the total environment, 214(1), 87-97. Comments: Known to accumulate heavy metals |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Known References: AquaNIS. Editorial Board, 2015. Information system on Aquatic Non-Indigenous and Cryptogenic Species. World Wide Web electronic publication. www.corpi.ku.lt/databases/aquanis. Version 2.36+. Accessed 2021-07-23. Rudnick, D.A., Resh, V.H. 2002. A survey to examine the effects of the Chinese mitten crab on commercial fisheries in northern California. Interagency Ecological Program Newsletter, 15: 19-21. Siegfried, S. 1999. Notes on the invasion of the Chinese mitten crab (Eriocheir sinensis) and their entrainment at the Tracy Fish Collection Facility. Interagency Ecological Project Newsletter, 12: 24-25. Comments: Stealing of bait, causing damage to fishing gear (Rudnick, Resh 2002); blocking water intakes in irrigation and water supply schemes (Siegfried 1999). |
Known measurable environmental impact? | Not known Comments: Not available. |
Included in the Target Species list? | No Comments: Assessed by the COMPLETE project experts (2021), excluded from the previous target species list. |
Association with vessel vectors (?) | Ballast waters References: Gollasch S, Macdonald E, Belson S, Botnen H, Christensen JT, Hamer JP, Houvenaghel G, Jelmert A, Lucas I, Masson D, McCollin T, Olenin S, Persson A, Wallentinus I, Wetsteyn LPMJ, Wittling T (2002) Life in Ballast Tanks In: Invasive aquatic species of Europe - distribution, impact and management. Leppäkoski, E., S. Gollasch & S. Olenin (eds). Kluwer Academic Publishers: 217-231 http://www.corpi.ku.lt/nemo/aqua_app_gollasch.pdf |
Last update by | Sergej Olenin, 2021-04-15 |