Invasive ctenophore Mnemiopsis leidyi in the Caspian Sea: feeding, respiration, reproduction and predatory impact on the zooplankton community.
By G. Finenko, A. Kideys, B. E. Anninsky, T. Shiganova, A. Roohi, M. R. Tabari, H. Rostami, S. Bagheri. 2006
105 citations recorded by the source corpus.
The impact of the invasive ctenophore Mnemiopsis leidyi on the zooplankton commu- nity of the Caspian Sea was quantified according to food consumption and other major physiological activities (i.e. respiration and reproduction), coupled with field data on population structure. The adverse effects of M. leidyi on the zooplankton community during the first years of the invasion were tremendous for the Caspian Sea compared to other regions affected by this ctenophore. The impact was highest in summer, due to high water temperatures and a population size structure in which juvenile ctenophores with mean lengths of 2 to 5 mm accounted for most of the population. During winter/spring, these ctenophores could consume the available stock of zooplankton in 3 to 8 d, whereas in summer consumption took only 1 d. The computed critical ctenophore biomass that does not affect (decrease) the abundance of mesozooplankton in the Caspian Sea is about 4 g m -3 (or 120 g m -2 , assuming most of the ctenophores occur in the upper 30 m layer). As is clear from the moni- toring data, the M.leidyi biomass in summer in different regions of the Caspian Sea is far in excess of this value. Such a high abundance of ctenophores, if maintained, would constantly keep the non- gelatinous zooplankton biomass at very low levels, and, as a consequence, no recovery could be expected in the pelagic fishery.
Subfields: Global and Planetary Change, Oceanography, Paleontology
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Citations in the corpus
- Extension of methods for jellyfish and ctenophore trophic ecology to large-scale research (2008, background): “I did not include data for cydippid larvae feeding on nauplii and microplankton (Stoecker et al., 1987a; Sullivan & Gifford, 2004; Finenko et al., 2006).”
- Reactive Oxygen Species Signaling and Oxidative Stress: Transcriptional Regulation and Evolution (2024, background): “ROS are involved in numerous physiological processes, and indiscriminate manipulation can lead to off-target effects and unintended consequences, including cytotoxicity in normal cells and tissues [156].”
- Changes in biodiversity of phytoplankton, zooplankton, fishes and macrobenthos in the Southern Caspian Sea after the invasion of the ctenophore Mnemiopsis Leidyi (2010, methodology): “Mnemiopsis leidyi is quite effective in consuming mesozooplankton prey organisms in both native waters (Burrell and Van Engel 1976; Deason and Smayda 1982; Sullivan et al. 2007) and in introduced regions (Kideys et al. 2005a, b; Shiganova 1998 Finenko et al. 2006 ).”
- Environmental effects on asexual reproduction rates of the scyphozoan Aurelia labiata (2007, background): “Light-sensitive asexual and sexual reproduction has been observed for many marine invertebrates, for example, among scyphozoans and hydrozoans (Spangenberg 1968, Loeb 1973, Honegger et al. 1980, Genzano & Kubota 2003).”