0000000001008826
AUTHOR
Henrique N. Cabral
Solapamiento del nicho trófico en un área de cría en la costa portuguesa
The diets and the trophic niche overlap between seven flatfish species were studied in a coastal nursery adjoining to the Tagus estuary (Portugal). Fish were sampled monthly, from March to November 1999, using a beach seine. Arnoglossus imperialis (Rafinesque, 1810), Arnoglossus laterna (Walbaum, 1792) and Arnoglossus thori Kyle, 1913, fed mainly on crustaceans. The diets of Buglossidium luteum (Risso, 1810) and Dicologoglossa cuneata (Moreau, 1881) were mainly composed of Bivalvia and Polychaeta, while for Scophthalmus rhombus (Linnaeus, 1758) the main food items were Mysidacea and Teleostei. The diet of Pegusa lascaris (Risso, 1810) was mainly composed by Cumacea, Bivalvia, Decapoda and A…
A multivariate approach to the feeding ecology of the Channel flounder, Syacium micrurum (Pisces, Pleuronectiformes), in Cape Verde, Eastern Atlantic
The feeding ecology of the Channel flounder, Syacium micrurum, from Cape Verde was studied in November 2003 and April 2004, using frequency of occurrence and percentage by number indices, as well as multivariate analyses. Overall, S. micrurum exhibited a generalist feeding strategy with a relatively broad niche width. Analyses indicated Crustacea (especially Brachyura) and Polychaeta as the dominant prey items, although other items, such as Foraminifera, Caridae or Actinopterigii, were preyed on more often or in larger quantities, depending on the sampling date. An ontogenetic shift in diet was also observed with smallsized individuals mostly consuming Crustacea, whereas medium- or large-si…