Seasonal grazing and food preference of herbivores in a Posidonia oceanica meadow

Authors

  • Andrea Peirano ENEA-Marine Environment Research Centre
  • Ilaria Niccolai ENEA-Marine Environment Research Centre
  • Roberto Mauro ENEA-Marine Environment Research Centre
  • C. Nike Bianchi ENEA-Marine Environment Research Centre

DOI:

https://doi.org/10.3989/scimar.2001.65n4367

Keywords:

grazing, C/N ratio, seagrass, epiphytes

Abstract


Seasonal grazing of the fish Sarpa salpa (L.), the urchin Paracentrotus lividus Lamarck and the isopods Idotea spp. was compared with the C/N ratio of adult and intermediate leaves and epiphytes of Posidonia oceanica (L.) Delile, collected at three different depths. Despite seasonal differences in grazing, herbivores showed preferences throughout the year for adult leaves with more epiphyte and higher N contents. The maximum grazing on adult and intermediate leaves was observed in September and in June for fish and in March for urchins, whereas it was irregular for isopods. Grazing by the three herbivores was not related to their preference for leaves or epiphytes, notwithstanding the seasonal differences in their C and N contents. We concluded that herbivores show no preference for food type throughout the year and that seasonal consumption of P. oceanica is related mainly to herbivore behaviour.

Downloads

Download data is not yet available.

Downloads

Published

2001-12-30

How to Cite

1.
Peirano A, Niccolai I, Mauro R, Nike Bianchi C. Seasonal grazing and food preference of herbivores in a Posidonia oceanica meadow. scimar [Internet]. 2001Dec.30 [cited 2022Oct.6];65(4):367-74. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/668

Issue

Section

Articles