Multiple‐Species Induction of Morphological Defenses in the Rotifer Keratella Testudo

@article{Stemberger1987MultipleSpeciesIO,
  title={Multiple‐Species Induction of Morphological Defenses in the Rotifer Keratella Testudo},
  author={Richard S. Stemberger and J. J. Gilbert},
  journal={Ecology},
  year={1987},
  volume={68},
  pages={370-378}
}
Filtrates of cultures of 10 of 12 common freshwater zooplankton species induced posterior spines in the rotifer Keratella testudo. Filtrates of cultures of Asplanchna spp. and those of crustacean zooplankton, including cladocerans and cyclopoid and calanoid copepods, generally produced the strongest induction responses. The filtrates of Daphnia pulex cultures, at densities as low as 0.4 individuals/L, promoted significant posterior spine development. This is the first known case of a competitor… Expand
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