Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Competition for food and mates by dominant and subordinate male rock shrimp, Rhynchocinetes typus

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Buy this article

$30.00+ Tax (if applicable)
Add to Favorites

image of Behaviour

Differences in size and resource holding power of males should affect how each competes for food and females. Subordinate males often search for undefended resources, whereas dominant males aggressively take over resources and usually defend them against nearby competitors. Furthermore, during ontogeny males may gain reproductively, and early developmental stages may value food over females, while the opposite may be true for dominants. Based on these assumptions we hypothesized that subordinate and dominant males would differ in their behaviour during resource location and acquisition. Subordinate males should spend more time searching over larger areas compared to dominant males, and compete more aggressively for food than for females, while dominants should do the reverse. In a laboratory study using rock shrimp, Rhynchocinetes typus, we found that subordinate males (called typus) searched more actively and over a larger area than dominant males (robustus) in noncompetitive contexts. In a competitive context with food, typus males also showed higher searching activity than robustus males, but in competition for females these differences disappeared: typus males decreased and robustus males increased searching. Subordinate typus males competed more aggressively for food than for females, whereas robustus males competed more aggressively for females than for food. The dominance of robustus males was evident only in competition for females but not for food. Our study is one of only a few about the ontogeny of locomotor performance in invertebrates and shows that male searching behaviour and the use of aggression are affected by competitive ability, female mate preferences and ontogenetic changes in subjective resource value.


Article metrics loading...


Affiliations: 1: Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Institute for Polar Ecology, University of Kiel; Wischhofstr. 1-3, 24148 Kiel, Germany; 2: Facultad Ciencias del Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile; Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Coquimbo, Chile)


Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to email alerts
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Behaviour — Recommend this title to your library

    Thank you

    Your recommendation has been sent to your librarian.

  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation