Articles by Author: R Villanueva

Search results for R Villanueva

We found 3 results for you
  1. Diet and mandibular growth of <em>Octopus magnificus</em> (Cephalopoda)

    Diet and mandibular growth of <em>Octopus magnificus</em> (Cephalopoda)

    Item type: Journal Article • Journal: South African Journal of Marine Science
    The diet of Octopus magnificus was studied from 102 specimens collected at depths of 80–550 m in the South-East Atlantic between March 1989 and November 1990. The diet was similar in both males and females, with benthic decapod crustaceans constituting...
  2. There is No Lattice Preserving Natural Tensor Norm

    There is No Lattice Preserving Natural Tensor Norm

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We prove that for every natural tensor norm α, one can find a Banach lattice X such that the tensor product X ⊗ X endowed with the norm α does not have the Gordon-Lewis property and, therefore, cannot be isomorphic...
  3. Temporal variations in the food habits of some fish species in Lake Nokoué, Benin

    Temporal variations in the food habits of some fish species in Lake Nokoué, Benin

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Stomach contents of the 12 most abundant fish species in Lake Nokoué, Benin, collected between 2003 and 2005, were analysed for temporal variations in their diet. Several species showed seasonal shifts in their diets based on benthic prey abundance and...