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Predatory and toxic effects of the turbellarian (Stenostomum cf leucops) on the population dynamics of Euchlanis dilatata, Plationus patulus (Rotifera) and Moina macrocopa (Cladocera)

(2011) HYDROBIOLOGIA. 662(1). p.171-177
Author
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Abstract
Catenulid turbellarians, common in shallow, tropical ponds, affect their rotifer prey via the production of toxins. There is, however, no quantitative information on their effect on the demography of their prey. Here, we test the impact of Stenostomum cf leucops on the population dynamics of the rotifers Euchlanis dilatata and Plationus patulus, and the cladoceran Moina macrocopa. Experiments were initiated with rotifers at 0.5 ind. ml(-1) and the cladoceran at 0.2 ind. ml(-1); growth patterns were compared in the absence and presence of worms (2 Stenostomum ind. per 50 ml). Results revealed that brachionids were most adversely affected: there was a lower growth rate of the rotifers in the presence of worms (P < 0.01, repeated measures ANOVA), although at the densities applied, the predator did not wipe out its prey. These littoral predators may therefore regulate rotifer prey in natural conditions. In Moina, the population evolved differently; initially, we found no difference between control and treatment, but after about 10 days, the population collapsed, irrespective of a direct or indirect contact with the predator. This delayed effect deserves more study, as it could represent flatworm toxin accumulation by the cladoceran.
Keywords
Egg ratio, ASPLANCHNA INTERMEDIA, Moina macrocopa, Euchlanis dilatata, Plationus patulus, Flatworms, Population growth, PREY, RESPONSES, MESOSTOMA

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Citation

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MLA
Nandini, S, SSS Sarma, and Henri Dumont. “Predatory and Toxic Effects of the Turbellarian (Stenostomum Cf Leucops) on the Population Dynamics of Euchlanis Dilatata, Plationus Patulus (Rotifera) and Moina Macrocopa (Cladocera).” HYDROBIOLOGIA 662.1 (2011): 171–177. Print.
APA
Nandini, S., Sarma, S., & Dumont, H. (2011). Predatory and toxic effects of the turbellarian (Stenostomum cf leucops) on the population dynamics of Euchlanis dilatata, Plationus patulus (Rotifera) and Moina macrocopa (Cladocera). HYDROBIOLOGIA, 662(1), 171–177. Presented at the 12th International Rotifer symposium.
Chicago author-date
Nandini, S, SSS Sarma, and Henri Dumont. 2011. “Predatory and Toxic Effects of the Turbellarian (Stenostomum Cf Leucops) on the Population Dynamics of Euchlanis Dilatata, Plationus Patulus (Rotifera) and Moina Macrocopa (Cladocera).” Hydrobiologia 662 (1): 171–177.
Chicago author-date (all authors)
Nandini, S, SSS Sarma, and Henri Dumont. 2011. “Predatory and Toxic Effects of the Turbellarian (Stenostomum Cf Leucops) on the Population Dynamics of Euchlanis Dilatata, Plationus Patulus (Rotifera) and Moina Macrocopa (Cladocera).” Hydrobiologia 662 (1): 171–177.
Vancouver
1.
Nandini S, Sarma S, Dumont H. Predatory and toxic effects of the turbellarian (Stenostomum cf leucops) on the population dynamics of Euchlanis dilatata, Plationus patulus (Rotifera) and Moina macrocopa (Cladocera). HYDROBIOLOGIA. 2011;662(1):171–7.
IEEE
[1]
S. Nandini, S. Sarma, and H. Dumont, “Predatory and toxic effects of the turbellarian (Stenostomum cf leucops) on the population dynamics of Euchlanis dilatata, Plationus patulus (Rotifera) and Moina macrocopa (Cladocera),” HYDROBIOLOGIA, vol. 662, no. 1, pp. 171–177, 2011.
@article{5865947,
  abstract     = {Catenulid turbellarians, common in shallow, tropical ponds, affect their rotifer prey via the production of toxins. There is, however, no quantitative information on their effect on the demography of their prey. Here, we test the impact of Stenostomum cf leucops on the population dynamics of the rotifers Euchlanis dilatata and Plationus patulus, and the cladoceran Moina macrocopa. Experiments were initiated with rotifers at 0.5 ind. ml(-1) and the cladoceran at 0.2 ind. ml(-1); growth patterns were compared in the absence and presence of worms (2 Stenostomum ind. per 50 ml). Results revealed that brachionids were most adversely affected: there was a lower growth rate of the rotifers in the presence of worms (P < 0.01, repeated measures ANOVA), although at the densities applied, the predator did not wipe out its prey. These littoral predators may therefore regulate rotifer prey in natural conditions. In Moina, the population evolved differently; initially, we found no difference between control and treatment, but after about 10 days, the population collapsed, irrespective of a direct or indirect contact with the predator. This delayed effect deserves more study, as it could represent flatworm toxin accumulation by the cladoceran.},
  author       = {Nandini, S and Sarma, SSS and Dumont, Henri},
  issn         = {0018-8158},
  journal      = {HYDROBIOLOGIA},
  keywords     = {Egg ratio,ASPLANCHNA INTERMEDIA,Moina macrocopa,Euchlanis dilatata,Plationus patulus,Flatworms,Population growth,PREY,RESPONSES,MESOSTOMA},
  language     = {eng},
  location     = {Berlin, Germany},
  number       = {1},
  pages        = {171--177},
  title        = {Predatory and toxic effects of the turbellarian (Stenostomum cf leucops) on the population dynamics of Euchlanis dilatata, Plationus patulus (Rotifera) and Moina macrocopa (Cladocera)},
  url          = {http://dx.doi.org/10.1007/s10750-010-0493-3},
  volume       = {662},
  year         = {2011},
}

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