Nom du corpus

Corpus Systématique Animale

Titre du document

The influence of spatial heterogeneity on the behavior and growth of two herbivorous stream insects

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Mayflies
  • Spatial heterogeneity
  • Drift behavior
  • Growth
  • Laboratory streams
Nom du fichier dans la ressource
Insectes_v2b_00056
Auteur(s)
  • Todd M. Palmer
Affiliation(s)
  • Department of Zoology, University of Wisconsin-Madison, Birge Hall, 430 Lincoln Drive, 53706, Madison, WI, USA
Résumé

Environmental heterogeneity can affect the behavior of organisms, but the consequences of patchiness for organismal energetics (e.g., growth, fitness) are not well understood. This study demonstrates that spatial heterogeneity can affect the growth of aquatic stream insects in laboratory streams, and reveals the behavioral mechanisms for these effects. In a 2×2 factorial design, I experimentally manipulated resource distribution (homogeneous vs. patchy, with the same overall resource levels) and current velocity (fast vs. slow) to investigate the direct and interactive effects of these factors on the drift behavior and growth of two mobile stream grazers, the mayflies Baetis bicaudatis and Epeorus deceptivus. B. bicaudatis nymphs grew larger in environments with homogeneously distributed resources than in patchy environments, and both species grew larger in fast than slow current environments. Patterns of drift behavior over the course of the study corresponded to observed differences in growth. Both species grew to larger body size in treatments where they drifted more successfully among substrates (fast-current treatments) and where they entered the drift less frequently (fast current for both species, and homogeneous treatments for B. bicaudatis). Overall, these results demonstrate that patchiness can significantly influence both the behavior of aquatic insects and the size to which these insects grow. In the light of previously published relationships between nymphal mayfly body mass and fecundity, these results suggest that patchiness in streams may have important consequences for mayfly populations.

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
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
A79F0395F6200B6FD58BE1164EE1259C41BBC47B
Revue

Oecologia

Année de publication
1995
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.784
Sous-corpus
  • Insectes
Type de publication
Journal
ark:/67375/1BB-HJLPR4K3-P
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