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)
Genet. mol. biol
;
32(1): 186-189, 2009. tab
Artículo
en Inglés
| LILACS
| ID: lil-505794
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 h 2 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.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Fenotipo
/
Mariposas Diurnas
/
Pigmentación
Tipo de estudio:
Investigación cualitativa
Límite:
Animales
Idioma:
Inglés
Revista:
Genet. mol. biol
Asunto de la revista:
Genética
Año:
2009
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Federal do Rio Grande do Sul/BR
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