Document Detail

Growth hormone transgenesis does not influence territorial dominance or growth and survival of first-feeding Atlantic salmon Salmo salar in food-limited stream microcosms.
MedLine Citation:
PMID:  21366569     Owner:  NLM     Status:  In-Data-Review    
This study explored the relative competitive ability and performance of first-feeding growth hormone (GH) transgenic and non-transgenic Atlantic salmon Salmo salar fry under low food conditions. Pair-wise dominance trials indicated a strong competitive advantage for residents of a contested foraging territory. Transgenic and non-transgenic individuals, however, were equally likely to be dominant. Similarly, in stream environments with limited food, the transgene did not influence the growth in mass or survival at high or low fry densities. Fry in low-density treatments, however, performed better than fry in high-density treatments. These results indicate that, under the environment examined, the growth performance of GH-transgenic and non-transgenic S. salar may be similar during first feeding, an intense period of selection in their life history. Similarities in competitive ability and growth performance with wild-type fish suggest that the capacity of transgenic S. salar to establish in natural streams may not be inhibited during early life history.
D T R Moreau; I A Fleming; G L Fletcher; J A Brown
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Publication Detail:
Type:  Journal Article     Date:  2011-01-26
Journal Detail:
Title:  Journal of fish biology     Volume:  78     ISSN:  1095-8649     ISO Abbreviation:  J. Fish Biol.     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-03-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0214055     Medline TA:  J Fish Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  726-40     Citation Subset:  IM    
Copyright Information:
© 2011 The Authors. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles.
Ocean Sciences Centre, Memorial University of Newfoundland, St. John's, Newfoundland and Labrador, A1C 5S7, Canada.
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