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On the reliability of a simple method for scoring phenotypes to estimate heritability : a case study with pupal color in Heliconius erato phyllis, Fabricius 1775 (Lepidoptera, Nymphalidae)

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On the reliability of a simple method for scoring phenotypes to estimate heritability : a case study with pupal color in Heliconius erato phyllis, Fabricius 1775 (Lepidoptera, Nymphalidae)

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Título On the reliability of a simple method for scoring phenotypes to estimate heritability : a case study with pupal color in Heliconius erato phyllis, Fabricius 1775 (Lepidoptera, Nymphalidae)
Autor Ferreira, Adriano Andrejew
Kucharski, Luiz Carlos Rios
Araujo, Aldo Mellender de
Abstract In this paper, two methods for assessing the degree of melanization of pupal exuviae from the butterfly Heliconius erato phyllis, Fabricius 1775 (Lepidoptera, Nymphalidae, Heliconiini) are compared. In the first method, which was qualitative, the exuviae were classified by scoring the degree of melanization, whereas in the second method, which was quantitative, the exuviae were classified by optical density followed by analysis with appropriate software. The heritability (h2) of the degree of melanization was estimated by regression and analysis of variance. The estimates of h2 were similar with both methods, indicating that the qualitative method could be particularly suitable for field work. The low estimates obtained for heritability may have resulted from the small sample size (n = 7-18 broods, including the parents) or from the allocation-priority hypothesis in which pupal color would be a lower priority trait compared to morphological traits and adequate larval development.
Contido em Genetics and molecular biology. Ribeirão Preto, SP,. Vol. 32, n. 1 (Mar 2009), p. 186-189.
Assunto Heliconius erato phyllis
Hereditariedade
[en] Allocation-priority hypothesis
[en] Butterfly
[en] Optical density
[en] Pupal melanization
[en] Qualitative
[en] Quantitative methods
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/23413
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