THE INFLUENCE OF DIFFERENT PARENTAL COMBINATIONS AND INCUBATION
TEMPERATURE ON THE RNA AND DNA CONTENT OF HERRING LARVAE AT HATCHING: A
PILOT STUDY
H. Hoie, A. Folkvord, A. Johannessen-1999
Journal of Fish Biology, 55(a): 110-118
Abstract:
In four half-sib pairings, herring mothers affected the standard length, dry weight, and RNA and DNA content of their progeny, while fathers affected larval RNA and DNA content. The amounts of RNA and DNA in offspring from one male were also influenced by temperature in that the highest RNA contents were found at the lowest temperature and highest DNA contents at the highest temperature. The results indicate that both environmental and genetic factors influence nucleic acid contents of young herring larvae, and this may limit the suitability of RNA:DNA ratio as a condition measure of newly hatched herring larvae.
(Department of Fisheries and Marine Biology, University of Bergen, Post-box 7800, N 5020, Bergen, Norway, tel: +55584604, fax: +55584450, e-mail: hans.hoie@ifm.uib.no)
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