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First overview on trophic relationships of the invasive ctenophore Mnemiopsis leidyi in a Mediterranean coastal lagoon (Berre Lagoon, France): benthic–pelagic coupling evidenced by carbon and nitrogen stable isotope composition
- Source :
- Regional Studies in Marine Science, Regional Studies in Marine Science, 2021, 41, pp.101570. ⟨10.1016/j.rsma.2020.101570⟩, Regional Studies in Marine Science, Elsevier, 2021, 41, pp.101570. ⟨10.1016/j.rsma.2020.101570⟩
- Publication Year :
- 2021
- Publisher :
- HAL CCSD, 2021.
-
Abstract
- International audience; The ctenophore Mnemiopsis leidyi, ranking among the 100 most damaging bioinvaders in the world, is a major predator of zooplankton, known to alter the biodiversity and functioning of the ecosystems in which it has been introduced. This first survey on the trophic relationships of M. leidyi in a Mediterranean lagoon (Berre, South of France) was performed through stable isotope analyses. Carbon and nitrogen isotope composition was used (1) to determine the types of prey ingested by this ctenophore and (2) the influence of individual size on its isotope composition, and (3) to make assumptions to explore its trophic relationships with the native jellyfish Aurelia sp.. The two gelatinous species ingested mainly (79% to 97% of the diet) planktonic prey (copepods, cirriped nauplii, gastropod larvae and cladocerans), but also preyed upon benthic organisms (mainly harpacticoid copepods and the amphipod Monocorophium insidiosum) in lower proportions (2.5% to 21%). Size-related changes in M. leidyi diet were evidenced with an increase in trophic level and benthic prey consumption in the larger individuals. These two gelatinous organisms probably play an important and underestimated role in the benthic–pelagic coupling in coastal lagoons by transferring benthic organic matter to the pelagic food webs.
- Subjects :
- 0106 biological sciences
010504 meteorology & atmospheric sciences
Aquatic Science
01 natural sciences
Zooplankton
Pelagic ctenophores and cnidarians
Predation
Ecosystem
14. Life underwater
ComputingMilieux_MISCELLANEOUS
Ecology, Evolution, Behavior and Systematics
0105 earth and related environmental sciences
Trophic level
Ecology
biology
Mnemiopsis
010604 marine biology & hydrobiology
Mediterranean lagoon
Pelagic zone
Plankton
biology.organism_classification
[SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology
Benthic zone
[SDE]Environmental Sciences
Animal Science and Zoology
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
C and N isotope composition
[SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis
Subjects
Details
- Language :
- English
- ISSN :
- 23524855
- Database :
- OpenAIRE
- Journal :
- Regional Studies in Marine Science, Regional Studies in Marine Science, 2021, 41, pp.101570. ⟨10.1016/j.rsma.2020.101570⟩, Regional Studies in Marine Science, Elsevier, 2021, 41, pp.101570. ⟨10.1016/j.rsma.2020.101570⟩
- Accession number :
- edsair.doi.dedup.....edf7067a894cdac6a207aef803655d4e