Comparison of anti-predatory defenses of Red Sea and Caribbean sponges. II. Physical defense

@article{Burns2003ComparisonOA,
  title={Comparison of anti-predatory defenses of Red Sea and Caribbean sponges. II. Physical defense},
  author={E. Burns and M. Ilan},
  journal={Marine Ecology Progress Series},
  year={2003},
  volume={252},
  pages={105-114}
}
In addition to the commonly used chemical defense mechanism against predation, ses- sile organisms such as terrestrial plants, soft corals and seaweeds are known to have a physical defense mechanism comprising structural elements made of lignin, CaCO3, silica, etc. Most sponges have siliceous spicules that play a key role as skeletal elements. To date, there has been no evidence to show that these spicules also play a role in defense against predation. It is known that low nutri- tional value… Expand
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