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The response of Daphnia populations to invertebrate predators involves morphological or behavioural changes. Few studies suggest that contaminant aqueous metals, like Cu or Ni at environmentally relevant concentrations, interfere with invertebrate chemical communication systems, such as that which operates between Daphnia and Chaoborus. The objective of our study was to determine if this interference could be also observed in lakes naturally rich in dissolved metals, such as volcanic lake (Lago Grande di Monticchio). This study aimed to assess if natural dissolved metals (e.g., Fe, Mn and Sr) could impair the ability of Daphnia pulex and D. galeata × hyalina × cucullata 'complex' populations to respond to Chaoborus kairomones by producing morphological defenses against potential predation, and to understand how Chaoborus predation might affect zooplankton community composition and overall zooplankton density. The predator impact did not result in: i) any morphological changes; ii) any apparent shift in body size pattern of the prey population; iii) any shift in life history traits. Chaoborus accounted for high mortality rates in Cladocera and strongly reduced the chance of individuals to reach maturity. Moreover, highly significant negative correlations between abundance of dominant taxa of zooplankton and C. flavicans were found. The last larval instars of C. flavicans seem to reduce the number of crustaceans, particularly cladocerans and copepod adults and could play an important role in structuring zooplankton communities. Our results suggest that metal inhibition of defence strategies induction probably occurs along the signal transduction pathway in Lake Grande di Monticchio. Impairment of chemosensory response to predatory chemical cues may have widespread ecological consequences in aquatic systems. Chaoborus predation effects can greatly affect both zooplankton biomass and community composition, impact interactions at lower trophic levels and generate an ecological cascade leading to a rapid eutrophication. LEONI, Barbara, and Letizia GARIBALDI. 2009. “Population Dynamics of Chaoborus Flavicans and Daphnia spp.: Effects on a Zooplankton Community in a Volcanic Eutrophic Lake With Naturally High Metal Concentrations (L. Monticchio Grande, Southern Italy)”. Journal of Limnology 68 (1):37-45. https://doi.org/10.4081/jlimnol.2009.37. More Citation Formats ACM ACS APA ABNT Chicago Harvard MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Downloads Download data is not yet available. Citations List of Cited By : Ammonium Transformation in 14 Lakes along a Trophic Gradient Barbara Leoni, Martina Patelli, Valentina Soler, Veronica Nava Water : 2018 Temporal population dynamics of the phantom midge Chaoborus crystallinus and its influence on the zooplankton community Philipp Janz, Lennart Weltje, Klaus Peter Ebke, Ursula Dawo Hydrobiologia : 2016 Seasonal dynamics of zooplankton community in four Mediterranean reservoirs in humid area (Beni Mtir: north of Tunisia) and semi arid area (Lakhmes, Nabhana and Sidi Saâd: center of Tunisia) Ikbel Sellami, Wassim Guermazi, Asma Hamza, Lotfi Aleya, Habib Ayadi Journal of Thermal Biology : 2010 A georeferenced dataset of Italian occurrence records of the phylum Rotifera Vittoria Ferrari, Arianna Gualdi, Isabella Bertani, Diego Fontaneto, Lyudmila Kamburska, Karimullah Karimullah, Federico Marrone, Ulrike Obertegger, Giampaolo Rossetti, Rocco Tiberti, Tommaso Cancellario Journal of Limnology : 2023 The Beneficial Effects of Cyanobacterial Co-Culture on Plant Growth Jonas Kollmen, Dorina Strieth Life : 2022 Themes by Openjournaltheme.com authors FOR AUTHORS SUBMIT YOUR PAPER Guide for Authors Benefits for Authors How to write a scientific paper How to write a Review article Article Processing Charge Registering new species in ZooBank reviewers FOR REVIEWERS Benefits for Reviewers How to review Thanks to Reviewers links LINKS CNR-IRSA - Water Research Institute Associazione Italiana di Oceanologia e Limnologia International Society of Limnology EFFS - European Federation for Freshwater Sciences International Society for Microbial Ecology flyer JOURNAL FLYER Phytoplankton-zooplankton coupling in a cascade of hypertrophic fishponds 21 September 2023 Marija Radojičić et al. 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Vol. 82 (2023) @j_limnology Most read last month Longitudinal recovery gradient of macroinvertebrates during different hydrological scenarios in a downstream river reach 107 A georeferenced dataset for occurrence records of the phylum Rotifera in Africa 90 The Freshwater Biodiversity Information System (FBIS) fish data: a georeferenced dataset of freshwater fishes occurring in South Africa 74 Most Cited Article Formation of large colonies: a defense mechanism of Microcystis aeruginosa under continuous grazing pressure by flagellate Ochromonas sp. Cited: 60 19 January 2012 Zhen Yang et al. A numerical index for evaluating phytoplankton response to changes in nutrient levels in deep mediterranean reservoirs Cited: 60 1 February 2009 Aldo MARCHETTO et al. Last Updated: 3 October 2023 Keywords The Journal of Limnology is an Open Access, academic peer-reviewed journal published by PAGEPress®, Pavia, Italy on behalf of the CNR-IRSA, Italy. All credits and honors to PKP for their OJS. Registered in print in Verbania, 7-10-1959, n. 58.

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