Skip to main content

The effects of carotenoid and food intake on caudal fin regeneration in male guppies

Buy Article:

$43.00 plus tax (Refund Policy)

The trade‐offs involved in allocating carotenoid pigments and food to healing and regrowing damaged caudal fin tissue v. other functions were examined in guppies Poecilia reticulata, a species in which females prefer males that display larger amounts of carotenoids in their skin. The guppies were derived from four natural populations in Trinidad that differed in resource availability but not predation intensity. Carotenoids, food and site of origin did not affect either absolute or relative fin regrowth, which suggested that fin regeneration in guppies was not constrained by carotenoid availability. It is possible that carotenoid intake influences fin regeneration in the presence of natural stressors such as predators. There was a significant negative interaction between food level in the laboratory and resource availability in the field: males from low‐resource‐availability sites regrew more fin tissue when raised on the high food level, and males from high‐resource‐availability sites regrew more fin tissue when raised on the low food level. The direction of this interaction runs counter to theoretical expectations.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Keywords: Poecilia reticulata; carotenoids; fin regeneration; food intake; geographic variation; guppy

Document Type: Regular Paper

Affiliations: Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 621 Charles E. Young Drive South, Los Angeles, CA 90095-1606, U.S.A.

Publication date: 2006-04-01

  • 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