Skip to main content

Morphological segregation of Icelandic threespine stickleback (Gasterosteus aculeatus L).

Buy Article:

$43.00 plus tax (Refund Policy)

Icelandic threespine sticklebacks show parallel sympatric morphological differences related to different substrate habitats in four Icelandic lakes. The level of morphological diversification varies among the lakes, ranging from a population with a wide morphological distribution to a population with clear resource morphs, where morphological diversification was reflected in diet differences. These differences in morphological divergence are closely related to the differences in the ecological surroundings of each population. This appears to be resource polymorphism, which may lead to population differentiation and speciation. Trophically related sexual dimorphism was also common in these sticklebacks, which is possibly the result of sexual selection or habitat segregation by the sexes. © 2002 The Linnean Society of London, Biological Journal of the Linnean Society, 2002, 76, 247–257.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: diet; lava; morphology; mud; parallel patterns; resource polymorphism – sympatric

Document Type: Research Article

Affiliations: 1: Hólar College, 551, Skagafjöro˘ur, Iceland 2: Zoology Department and Axelrod Institute of Ichthyology, University of Guelph, Guelph, Ontario, N1G 2W1 Canada

Publication date: 01 June 2002

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more