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A mortality cost of virginity at older ages in female Mediterranean fruit flies

Carey, James R | Liedo Fernández, Pablo [autor/a] | Harshman, Lawrence [autor/a] | Zhang, Ying [autor/a].
Tipo de material: Artículo ArtículoTema(s): Moscas de la fruta | Ceratitis capitata | Reproducción animal | MortalidadNota de acceso: Disponible para usuarios de ECOSUR con su clave de acceso En: Experimental Gerontology. volumen 37, número 4 (April 2002), páginas 507-512Número de sistema: 35220Resumen:
Inglés

Mortality rates were measured over the lifetime of 65,000 female Mediterranean fruit flies, Ceratitis capitata, maintained in either all-female (virgin) cages or cages with equal initial numbers of males, to determine the effect of sexual activity and mating on the mortality trajectory of females at older ages. Although a greater fraction of females maintained in all-female (virgin) cages survived to older ages, the life expectancy of the surviving virgins was less than the life expectancy of surviving non-virgins at older ages. This was due to a mortality crossover where virgin flies experience lower mortality than mated flies from eclosion to Day 20 but higher mortality thereafter. These results suggest that there are two consequences of mating--a short-term mortality increase (cost) and a longer term mortality decrease (benefit).
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Mortality rates were measured over the lifetime of 65,000 female Mediterranean fruit flies, Ceratitis capitata, maintained in either all-female (virgin) cages or cages with equal initial numbers of males, to determine the effect of sexual activity and mating on the mortality trajectory of females at older ages. Although a greater fraction of females maintained in all-female (virgin) cages survived to older ages, the life expectancy of the surviving virgins was less than the life expectancy of surviving non-virgins at older ages. This was due to a mortality crossover where virgin flies experience lower mortality than mated flies from eclosion to Day 20 but higher mortality thereafter. These results suggest that there are two consequences of mating--a short-term mortality increase (cost) and a longer term mortality decrease (benefit). eng

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