Nom du corpus

Corpus Systématique Animale

Titre du document

Effects of prey size and foraging mode on the ontogenetic change in feeding niche of Colostethus stepheni (Anura: Dendrobatidae)

Lien vers le document
Springer (journals)
Langue(s) du document
Type de document
Mots-clés d'auteur
  • Ontogenetic change
  • Diet
  • Electivity
  • Prey size
  • Foraging behavior
Nom du fichier dans la ressource
Batraciens_v2b_00443, Reptiles_v2b_00754
  • Albertina P. Lima 1
  • Gloria Moreira 1
  • 1) Dept. de Ecologia, INPA, CP 478, 69011-970, Manaus, AM, Brasil

The feeding niche ofColostethus stepheni changes during ontogeny. Small individuals eat small arthropods, principally mites and collembolans, and larger frogs eat bigger prey of other types. The shift in prey types is not a passive effect of selection for bigger prey. There is a strong relationship between electivity for prey types and frog size, independent of electivity for prey size. Four indices of general activity during foraging (number of movements, velocity, total area utilized and time spent moving), which are associated with electivity for prey types in adult frogs and lizards, did not predict the ontogenetic change in the diet ofC. stepheni. Apparently, the behavioral changes that cause the ontogenetic change inC. stepheni are more subtle than shifts in general activity during foraging. Studies of niche partitioning in communities of anurans that do not take into consideration ontogenetic changes in diet and seasonal changes in the size structures of populations present a partial and possibly erroneous picture of the potential interactions among species.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - invertebres
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX


Année de publication
Présence de XML structuré
Version PDF
Score qualité du texte
  • Batraciens
  • Reptiles
Type de publication
Powered by Lodex 9.3.8