AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Mnemiopsis leidyi [WoRMS] | |
Authority | A. Agassiz, 1865 | |
Family | Bolinopsidae | |
Order | Lobata | |
Class | Tentaculata | |
Phylum | Ctenophora | |
Synonym (?) | Mnemiopsis gardeni (Agassiz L, 1860) Mnemiopsis mccradyi (Mayer, 1900) References (not structured): Costello J, Mianzan H, Shiganova T (2005) Mnemiopsis leidyi (comb jelly) In: Global Invasive Species Database. Available from: http://www.issg.org/database/species/ecology.asp?si=95&fr=1&sts;= Accesed 31 December 2011 |
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Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Atlantic --> Ocean region: NW Atlantic --> Ocean region: SW Atlantic --> Ocean region: W Tropical Atlantic References (not structured): Purcell JE, Shiganova TA, Decker MB, Houde ED (2001) The ctenophore Mnemiopsis in native and exotic habitats: U.S. estuaries versus the Black Sea basin. Hydrobiologia 451: 145-176 Comments: The native habitats of the ctenophore, mnemiopsis, are temperate to subtropical estuaries along the Atlantic coast of North and South America, where it is found in an extremely wide range of environmental conditions (winter low and summer high temperatures of 2 and 32 ◦C, respectively, and salinities of <2–38). |
Life form / Life stage (?) |
References (not structured): Costello J et al (2001) Mnemiopsis leidyi (comb jelly): The Global invasive species database: http://www.issg.org/database/species/ecology.asp?si=95&fr=1&sts;=&lang=EN Comments: Totally planktonic life history; early tentaculate larvae resembling Cydippida ctenophores but metamorphoses into the mature lobate form. No current evidence of resting stages. |
Sociability / Life stage (?) |
Comments: comb jelly; ctenophore - biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb. |
Reproductive frequency (?) | Iteroparous References (not structured): Planka HD (1974) Ctenophora. Reproduction of marine invertebrates. Eds. Glese A.C. Pearse J.S. V.1.p.201-265 Reeve MR, Walter MA (1976) A large-scale experiment on the growth and predation potencial of ctenophore populations.p.187-199. In G.O.Mackie (ed.). Coelenterate ecology and behavior. Plenum. Comments: As most planktonic ctenophores Mnemiopsis leidyi is a simultaneous hermaphrodite and capable of self fertilization, and thus viable offspring can be produced from a single adult. |
Reproductive type (?) | Self-fertilization References: Planka HD (1974) Ctenophora. Reproduction of marine invertebrates. Eds. Glese A.C. Pearse J.S. V.1.p.201-265 Reeve MR, Walter MA (1976) A large-scale experiment on the growth and predation potencial of ctenophore populations.p.187-199. In G.O.Mackie (ed.). Coelenterate ecology and behavior. Plenum. Comments: As most planktonic ctenophores Mnemiopsis leidyi is a simultaneous hermaphrodite and capable of self fertilization, and thus viable offspring can be produced from a single adult. According to Shiganova 2002 (cited in Postel, L., Kube, S., Berrie, C. 2008. A matter of time and temperature: The spread of Mnemiopsis leidyi. ICES Insight, 45. 16-19) each adult can in average produce 600-1000 eggs per day, maximum is more than 7000 eggs per day. |
Developmental trait (?) | Planktotrophy Spawning References: Costello J et al (2001) Mnemiopsis leidyi (comb jelly): The Global invasive species database: http://www.issg.org/database/species/ecology.asp?si=95&fr=1&sts;=&lang=EN Comments: Mnemiopsis leidyi is a free-spawning, simultaneous hermaphrodite capable of self-fertilization. The specimens 5-7 cm long have 100-140 ctenes in their subsaggital rows spreading along the lobe surfaces, while in the shorter subtentacular rows their numbers are less -between 55-90. Such a specimen carries some 150 eggs along each meridianal canal and over 100 of them - in each auricular canal. |
Characteristic feeding method / Life stage (?) |
References (not structured): Tzikhon-Lukanina E A, Reznichenko OG, Lukasheva TA (1991) Quantitative aspects of feeding in the Black Sea ctenophore Mnemiopsis leidyi. Oceanology 31: 272-276 The Global invasive species database: http://www.issg.org/database/species/ecology.asp?si=95&fr=1&sts;=&lang=EN; Finenko GA, Abolmasova GI, Romanova ZA (1995) Intensity of the nutrition, respiration and growth of Mnemiopsis mccradyi in relation to grazing conditions. Biologia Morya 21: 315-320 (in Russian) Comments: The food spectrum of Mnemiopsis varies depending on season, place and time of the day. In summer it feeds mainly with the planktonic crustaceans: small specimens prefere cladocerans, while large the copepods together with fish eggs and larvae. The mean size of preys varies between 0.75 and 1 mm. The ctenophore population inhabiting coastal waters have more variable food spectrum on comparison with that in the open sea . It includes more copepods and fish eggs, fish and invertebrate larvae. Among the latter mussel veligers are usually predominate. |
Mobility / Life stage (?) |
References (not structured): Coonfield BR (1934) Coordination and movement of the swimming-plates of Mnemiopsis leidyi, Agassiz. Biol Bull 66(1): 10-21 Comments: This animal moves along in the water just below the surface with its oral end in advance, propelling itself by the successive movements of paddle plates which beat in an aboral direction. Each paddle plate consists of several very long cilia fused and beating as a unit. |
Salinity tolerance range (?) | Exact range: 2 - 32 References: Purcell JE, Shiganova TA, Decker MB, Houde ED (2001) The ctenophore Mnemiopsis in native and exotic habitats: U.S. estuaries versus the Black Sea basin. Hydrobiologia 451: 145-176 |
Habitat modifying ability potential (?) | Keystone species References: Costello J, Mianzan H, Shiganova T (2005) Mnemiopsis leidyi (comb jelly) In: Global Invasive Species Database. Available from: http://www.issg.org/database/species/ecology.asp?si=95&fr=1&sts;= Accesed 31 December 2011 Comments: Mnemiopsis leidyi is a major zooplankton predator and is associated with fishery crashes (Costello, 2001). A carnivorous predator on edible zooplankton (including meroplankton), pelagic fish eggs and larvae, M. leidyi causes negative impacts right through the foodchain of the areas it has invaded. In the Black Sea and the Sea of Azov, the zooplankton, ichthyoplankton and zooplanktivorous fish stocks all underwent profound changes. The pelagic ecosystem of the Black Sea was degraded, manifesting as sharply decreased biodiversity, abundance, and biomass of the main components of the pelagic ecosystem-zooplankton (Dumont and Shiganova). Fish stocks in the Black Sea and Sea of Azov have suffered due to predation on eggs and larval stages of food supplies (Shiganova 2003). Effects on the ecosystem in the Caspian Sea were faster and stronger than in the Black Sea. In 2001, repercussions were felt at all trophic levels, including that of the top predator, the Caspian seal (Dumont and Shiganova). A cascading effect occurred at the higher trophic levels, from a decrease in zooplankton stock and collapsing planktivorous fish, to vanishing predatory fish and dolphins. Similar effects occured at lower trophic levels: from a decrease in zooplankton stock to an increase in phytoplankton, which was released from zooplankton grazing pressure. The majority of these effects were top-down, but a few were also bottom-up. Similar effects, but less pronounced, were recorded in the Sea of Marmara. Effects on Mediterranean food webs have, so far, remained insignificant. Salinity is probably supraoptimal there, and several predators prevent M.leidyi from reaching outbreak levels. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Known References: Daskalov, G. M., and Mamedov, E. V. (2007a). Integrated fisheries assessment and possible causes for the collapse of anchovy kilka in the Caspian Sea. ICES Journal of Marine Science, 64: 503–511 Daskalov G.M., Grishin A.N., Rodionov S., and Mihneva V. (2007b). Trophic cascades triggered by overfishing reveal possible mechanisms of ecosystem regime shifts. PNAS 104 (25) 10518-10523 Galina A. Finenko, Ahmet E. Kideys, Boris E. Anninsky, Tamara A. Shiganova, Abolghaseem Roohi, Mojgan R. Tabari, Hosseinali Rostami, Siamak Bagheri 2012. Invasive ctenophore Mnemiopsis leidyi in the Caspian Sea: feeding, respiration, reproduction and predatory impact on the zooplankton community. Mar Ecol Prog Ser. 314: 171-185 A, D. GUBANOVA, I. YU. PRUSOVA, U. NIERMANN, N. V. SHADRIN & I. G. POLIKARPOV 2001: Dramatic Change in the Copepod Community in Sevastopol Bay (Black Sea) during Two Decades (1976-1996). Senckenbergiana maritima. 31:17-27. Comments: Collapse of planktivorus fish stocks (Daskalov et al., 2007a and b). |
Known measurable environmental impact? | Known References: Daskalov, G. M., and Mamedov, E. V. (2007a). Integrated fisheries assessment and possible causes for the collapse of anchovy kilka in the Caspian Sea. ICES Journal of Marine Science, 64: 503–511 Daskalov G.M., Grishin A.N., Rodionov S., and Mihneva V. (2007b). Trophic cascades triggered by overfishing reveal possible mechanisms of ecosystem regime shifts. PNAS 104 (25) 10518-10523 Galina A. Finenko, Ahmet E. Kideys, Boris E. Anninsky, Tamara A. Shiganova, Abolghaseem Roohi, Mojgan R. Tabari, Hosseinali Rostami, Siamak Bagheri 2012. Invasive ctenophore Mnemiopsis leidyi in the Caspian Sea: feeding, respiration, reproduction and predatory impact on the zooplankton community. Mar Ecol Prog Ser. 314: 171-185 A, D. GUBANOVA, I. YU. PRUSOVA, U. NIERMANN, N. V. SHADRIN & I. G. POLIKARPOV 2001: Dramatic Change in the Copepod Community in Sevastopol Bay (Black Sea) during Two Decades (1976-1996). Senckenbergiana maritima. 31:17-27. Comments: Large changes in invaded ecosystems (mainly in Black and Caspian Seas) (Gubanova et al., 2001, Daskalov et al., 2007 a and b, Finenko et al., 2021). |
Included in the Target Species list? | Yes Comments: Assessed by the COMPLETE project experts (2021), included in target species list. |
Association with vessel vectors (?) | Ballast waters References: Reusch et al 2010. Microsatellites reveal origin and genetic diversity of Eurasian invasions by one of the world´s most notorious marine invader, Mnemiopsis leidyi (Ctenophora). Molecular Ecology |
Last update by | Monika Pelėdienė, 2022-01-19 |