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Evidence of paternal nutrient provisioning to embryos in broad-nosed pipefish Syngnathus typhle.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap.
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2011 (Engelska)Ingår i: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 78, nr 6, s. 1725-1737Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

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.

Ort, förlag, år, upplaga, sidor
Wiley , 2011. Vol. 78, nr 6, s. 1725-1737
Nyckelord [en]
feeding of offspring, paternal care, radiolabelled amino acids and glucose, Syngnathidae, viviparity
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Biologiska vetenskaper
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URN: urn:nbn:se:umu:diva-45122DOI: 10.1111/j.1095-8649.2011.02989.xPubMedID: 21651524OAI: oai:DiVA.org:umu-45122DiVA, id: diva2:426022
Tillgänglig från: 2011-06-22 Skapad: 2011-06-22 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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Mobley, Kenyon B.

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