Diel vertical migration of copepods in a Brazilian lake: a mechanism for decreasing risk of Chaoborus predation?

Perticarrari, André; Ms, Arcifa; Ra, Rodrigues

doi:10.1590/s1519-69842004000200015

Cited by 21 publications

(1 citation statement)

References 21 publications

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“…The phenomenon of diel vertical migration (DVM) is a well-known defensive behaviour found in a variety of aquatic invertebrates (e.g., [48][49][50][51]). It has been studied in cladocerans for more than one century [52,53].…”

Section: Behavioural Defencesmentioning

confidence: 99%

Knowing the Enemy: Inducible Defences in Freshwater Zooplankton

et al. 2020

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Phenotypic plasticity in defensive traits is an appropriate mechanism to cope with the variable hazard of a frequently changing predator spectrum. In the animal kingdom these so-called inducible defences cover the entire taxonomic range from protozoans to vertebrates. The inducible defensive traits range from behaviour, morphology, and life-history adaptations to the activation of specific immune systems in vertebrates. Inducible defences in prey species play important roles in the dynamics and functioning of food webs. Freshwater zooplankton show the most prominent examples of inducible defences triggered by chemical cues, so-called kairomones, released by predatory invertebrates and fish. The objective of this review is to highlight recent progress in research on inducible defences in freshwater zooplankton concerning behaviour, morphology, and life-history, as well as difficulties of studies conducted in a multipredator set up. Furthermore, we outline costs associated with the defences and discuss difficulties as well as the progress made in characterizing defence-inducing cues. Finally, we aim to indicate further possible routes in this field of research and provide a comprehensive table of inducible defences with respect to both prey and predator species.

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Section: Behavioural Defencesmentioning

confidence: 99%

Knowing the Enemy: Inducible Defences in Freshwater Zooplankton

et al. 2020

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Tracking Contaminant Transport From Biovectors

Kallenborn

Blais

2015

Environmental Contaminants

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Mesocosm experiment on the impact of invertebrate predation on zooplankton of a tropical lake

Castilho-Noll

Arcifa²

2007

Aquat Ecol

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Invertebrate predation on zooplankton was investigated in mesocosms in the shallow tropical Lake Monte Alegre, São Paulo State, Brazil, in the summer of 1999. Two treatments were applied: one with natural densities of prey and the predators Chaoborus brasiliensis and the water mite Krendowskia sp. (Pr+), and another without predators (Pr-). Three enclosures (volume: 6.6 m 3 of water per enclosure) per treatment were installed in the sediment of the deepest area of the lake (5.0 m). At the beginning, Chaoborus larvae were present in Pr-enclosures, because of technical difficulties in preventing their entrance, but they virtually disappeared in the course of the experiment. Water mites were almost absent in Pr-enclosures. Chaoborus predation negatively influenced the Daphnia gessneri population, but not the populations of the copepods Tropocyclops prasinus and Thermocyclops decipiens and the rotifers Keratella spp. Death rates of Daphnia were generally significantly higher in the Pr+ treatment; Daphnia densities increased after the disappearance of Chaoborus in Pr-. Copepod losses to predation in the experiment may be compensated by higher fecundity, shorter egg development time, and lower pressure on egg-bearing females, resulting in a lower susceptibility to Chaoborus predation. The predation impact of water mite on microcrustaceans and rotifers in the experiment was negligible.

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Diel vertical migration of copepods in a Brazilian lake: a mechanism for decreasing risk of Chaoborus predation?

Cited by 21 publications

References 21 publications

Knowing the Enemy: Inducible Defences in Freshwater Zooplankton

Knowing the Enemy: Inducible Defences in Freshwater Zooplankton

Tracking Contaminant Transport From Biovectors

Mesocosm experiment on the impact of invertebrate predation on zooplankton of a tropical lake

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