Light intensity increases the susceptibility of Vallisneria natans to snail herbivory
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522, more
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| Keywords |
Aquatic organisms > Heterotrophic organisms > Herbivores
Availability > Resource availability
Eukaryotes > Animals > Invertebrates > Mollusca > Gastropoda > Snails
Interspecific relationships > Predation
Intraspecific relationships
Light intensity
Palatability
Radiations > Electromagnetic radiation > Light
Snails
Topographic features > Landforms > Coasts > Submerged shorelines
Vallisneria natans
China, People's Rep., Hubei Prov.
Fresh water |
| Author keywords |
CNB hypothesis; light; palatability; resource availability; snail;submerged plant |
| Authors | | Top |
- Li, Y.
- Yu, D.
- Xu, X.
- Xie, Y.
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| Abstract |
Palatability to snail herbivory (Radix swinhoei H. Adams) and C/N ratios were assessed for Vallisneria natans (Lour.) Hara, in three different experimental light regimes (midday fluxes respectively 280 µmol m -2 s-1, 15 µmol m-2 s-1, and a variable intensity between these two). Higher light intensity as well as prolonged photoperiods increased palatability and growth, and improved C/N ratio by decreasing N content. Snail growth was slightly increased but juvenile survivorship decreased under higher light. The results suggest that the availability of light may affects intraspecific variation in palatability of V. natans. |
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