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Microbiology

University of Nebraska - Lincoln

2003

Enzymes

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Full-Text Articles in Life Sciences

Life-History Evolution And The Microevolution Of Intermediary Metabolism: Activities Of Lipid-Metabolizing Enzymes In Life-History Morphs Of A Wing-Dimorphic Cricket, Anthony J. Zera, Zhangwu Zhao Feb 2003

Life-History Evolution And The Microevolution Of Intermediary Metabolism: Activities Of Lipid-Metabolizing Enzymes In Life-History Morphs Of A Wing-Dimorphic Cricket, Anthony J. Zera, Zhangwu Zhao

Anthony Zera Publications

Although a considerable amount of information is available on the ecology, genetics, and physiology of life-history traits, much more limited data are available on the biochemical and genetic correlates of life-history variation within species. Specific activities of five enzymes of lipid biosynthesis and two enzymes of amino acid catabolism were compared among lines selected for flight-capable (LW[f]) versus flightless (SW) morphs of the cricket Gryllus firmus. These morphs, which exist in natural populations, differ genetically in ovarian growth (100–400% higher in SW) and aspects of flight capability including the size of wings and flight muscles, and the concentration of triglyceride …