Document Detail


Evidence of paternal nutrient provisioning to embryos in broad-nosed pipefish Syngnathus typhle.
MedLine Citation:
PMID:  21651524     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
In two experiments, radioactively labelled nutrients (either (3) H-labelled amino-acid mixture or (14) C-labelled glucose) were tube-fed to brooding male Syngnathus typhle. Both nutrients were taken up by the males and radioactivity generally increased in the brood pouch tissue with time. Furthermore, a low but significant increase of (3) H-labelled amino acids in embryos was found over the experimental interval (48 h), whereas in the (14) C-glucose experiment the radioactivity was taken up by the embryos but did not increase over the experimental time (320 min). Uptake of radioisotopes per embryo did not differ with embryo size. A higher uptake mg(-1) tissue of both (3) H-labelled amino acids and (14) C-labelled glucose was found in smaller embryos, possibly due to a higher relative metabolic rate or to a higher surface-area-to-volume ratio compared to larger embryos. Uptake in embryos was not influenced by male size, embryonic developmental advancement or position in the brood pouch. It is concluded that brooding males provide amino acids, and probably also glucose, to the developing embryos in the brood pouch.
Authors:
C Kvarnemo; K B Mobley; C Partridge; A G Jones; I Ahnesjö
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Publication Detail:
Type:  Journal Article     Date:  2011-05-12
Journal Detail:
Title:  Journal of fish biology     Volume:  78     ISSN:  1095-8649     ISO Abbreviation:  J. Fish Biol.     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-06-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0214055     Medline TA:  J Fish Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1725-37     Citation Subset:  IM    
Copyright Information:
© 2011 The Authors. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles.
Affiliation:
Department of Zoology, Stockholm University, SE-106 91 Stockholm, Sweden Department of Zoology, University of Gothenburg, Box 463, SE-405 30 Gothenburg, Sweden Department of Biology, 3258 Texas A&M University, College Station, TX 77843-3258, U.S.A. Department of Ecology and Genetics, Uppsala University, Nobyvägen 18D, SE-75236 Uppsala, Sweden.
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