TY  - JOUR
AU  - Vallet Carole, Beans Cristina
PY  - 2011//
TI  - Food preferences of larvae of Antarctic silverfish Pleuragramma antarcticum Boulenger, 1902 from Terre Adélie coastal waters during summer 2004
JO  - Polar Science
SP  - 239
EP  - 251
VL  - 5
IS  - 2
KW  - Antarctica
KW  - Feeding strategy
KW  - Food selection
KW  - Food size
KW  - Generalist feeders
KW  -
N2  - Ichthyoplankton samples were collected from 19 to 31 January 2004 in the Dumont dUrville Sea (East Antarctic shelf). The Nototheniidae Pleuragramma antarcticum comprised more than 90% of the sampled larvae. Gut contents of 95 P antarcticum larvae were examined. Most larvae fed on phytoplankton, especially diatoms, whereas some other specimens had a mixed diet with phyto- and zooplankton prey. A single specimen fed exclusively on copepods. The stomach contents was dominated by three diatoms taxa, such as Thalassiothrix antarctica, Fragilariopsis spp. and Chaetoceros spp. Prey selection was apparently food density dependent, with an inverse relationship between food abundance and selection feeding. Larvae selected positively some diatoms, such as Coscinodiscus spp. and T. antarctica, presenting a low concentration in the water column compared to Fragilariopsis spp., which were strongly negatively selected. During summer, larvae were opportunistic feeders with a broad trophic niche, which allowed them to switch between different food types.
SN  - 1873-9652
UR  - http://dx.doi.org/10.1016/j.polar.2010.12.005
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=3331), last updated on Sun, 28 Jul 2024 19:15:13 +0200
ID  - ValletCarole2011
ER  -