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Light intensity increases the susceptibility of Vallisneria natans to snail herbivory
Li, Y.; Yu, D.; Xu, X.; Xie, Y. (2005). Light intensity increases the susceptibility of Vallisneria natans to snail herbivory. Aquat. Bot. 81(3): 265-275. dx.doi.org/10.1016/j.aquabot.2005.01.005
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770, more
Peer reviewed article  

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Keywords
    Herbivores; Intraspecific relationships; Light; Light intensity; Palatability; Predation; Resource availability; Snails; Snails; Submerged shorelines; Vallisneria natans; China, People's Rep., Hubei Prov.; Fresh water

Authors  Top 
  • Li, Y.
  • Yu, D.
  • Xu, X.
  • Xie, Y.

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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