| Registro completo |
| Provedor de dados: |
48
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| País: |
Chile
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| Título: |
Quantitative genetic variation of metabolism in the nymphs of the sand cricket, Gryllus firmus, inferred from an analysis of inbred-lines
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| Autores: |
NESPOLO,ROBERTO F
CASTAÑEDA,LUIS E
ROFF,DEREK A
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| Data: |
2007-01-01
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| Ano: |
2007
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| Palavras-chave: |
Broad-sense heritability
Metabolic rate
Insects
Inbred lines
Through-flow C0(2) respirometry
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| Resumo: |
Compared with morphological and life history traits, quantitative genetic variation of metabolic and related traits in animals has been poorly studied. We used flow-through VC0(2) respirometry and simultaneous activity measurement on nymphs of the sand cricket {Gryllus firmus) from inbred lines to estimate broad-sense heritability of four metabolic variables. In addition, we measured a number of linear dimensions in the adults from the same inbred lines. There were significant multivariate effects of inbred lines for all traits and broad-sense heritability for physiological traits was 4.5%, 5.2%, 10.3% and 8.5% for average, resting, minimum and maximum C0(2) production in nymphs, respectively. Though the MANOVA indicated significant genetic variation among inbred lines in adult morphology, the broad-sense heritabilities were relatively low ranging from 0-18%. Our results indicate that the heritabilities of metabolic measures are large enough to potentially respond to selection
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| Tipo: |
Journal article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000100001
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| Editor: |
Sociedad de Biología de Chile
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| Formato: |
text/html
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| Fonte: |
Biological Research v.40 n.1 2007
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