Genetic variation of fat and glycogen storage in Xiphophorus variatus (pisces; poeciliidae)

Richard Borowsky, Klaus Kallman

Research output: Contribution to journalArticle

Abstract

1. 1. Individuals from independent sibships of Xiphophorus variatus were maintained at defined feeding levels from birth to sexual maturity, and then killed for analysis of triglycerides and glycogen. 2. 2. Significant variation was observed among sibships in adult sizes, triglyceride and glycogen storage, condition factor and ovary weights. 3. 3. Reduced rations had major effects on growth and energy storage in one sibship ("steep" response), but no noticeable effect in another ("flat" response). 4. 4. Flat and steep responses may be phenotyped in the laboratory and their genetics analysed by reciprocal crosses among lines. 5. 5. Females had higher liver glycogen and lower liver fats than males and appeared to cycle fats between the liver and the ovaries.

Original languageEnglish (US)
Pages (from-to)579-586
Number of pages8
JournalComparative Biochemistry and Physiology, Part A
Volume105
Issue number3
StatePublished - Jul 1993

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Cyprinodontiformes
Glycogen
Liver
Ovary
Triglycerides
Fats
Liver Glycogen
Energy storage
Parturition
Weights and Measures
Growth
Genetics

ASJC Scopus subject areas

  • Physiology
  • Molecular Biology
  • Biochemistry

Cite this

Genetic variation of fat and glycogen storage in Xiphophorus variatus (pisces; poeciliidae). / Borowsky, Richard; Kallman, Klaus.

In: Comparative Biochemistry and Physiology, Part A, Vol. 105, No. 3, 07.1993, p. 579-586.

Research output: Contribution to journalArticle

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