Biologia da traça das crucíferas, Plutella xylostella Linnaeus (Lepidoptera, Yponomeutidae), sob condições controladas de temperatura, e parasitóides associados: Part III. Estudo sobre a biologia de Apanteles piceotrichosus (Blanchard) (Hymenoptera, Braconidae): análise do efeito de endocruzamento

Gonçalves, Rafaelle Ribeiro; Mare, Rocco Alfredo Di

doi:10.1590/s0101-81752005000300045

Cited by 3 publications

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“…However, many studies have failed to detect inbreeding depression on adult life span ( Johnson and Hutchinson 1993;De Clercq et al 1998;Nieminen et al 2001;Markert et al 2004;Prezotti et al 2004;Radwan et al 2004;Goncalves and Di Mare 2005) and others have shown that the effect of inbreeding on adult life span varies among lines or populations (Fowler and Whitlock 1999;Swindell and Bouzat 2006) and among rearing conditions (Pray et al 1994). Unfortunately, most detailed studies of the genetics of life span and mortality rates, and the effects of inbreeding on life span and mortality rates, use Drosophila as a model system (Clarke and Maynard Smith 1955;Hughes 1995;Pletcher et al 2000;Hughes et al 2002;Vermeulen and Bijlsma 2004;Swindell and Bouzat 2006).…”

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The Genetic Architecture of Life Span and Mortality Rates: Gender and Species Differences in Inbreeding Load of Two Seed-Feeding Beetles

et al. 2006

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We examine the inbreeding load for adult life span and mortality rates of two seed beetle species, Callosobruchus maculatus and Stator limbatus. Inbreeding load differs substantially between males and females in both study populations of C. maculatus-life span of inbred females was 9-13% shorter than the life span of outbred females, whereas the life span of inbred males did not differ from the life span of outbred males. The effect of inbreeding on female life span was largely due to an increase in the slope of the mortality curve. In contrast, inbreeding had only a small effect on the life span of S. limbatus-life spans of inbred beetles were $5% shorter than those of outbred beetles, and there was no difference in inbreeding load between the sexes. The inbreeding load for mean life span was $0.4-0.6 lethal equivalents per haploid gamete for female C. maculatus and $0.2-0.3 for both males and females of S. limbatus, all within the range of estimates commonly obtained for Drosophila. However, contrary to the predictions of mutation-accumulation models, inbreeding load for loci affecting mortality rates did not increase with age in either species, despite an effect of inbreeding on the initial rate of increase in mortality. This was because mortality rates decelerated with age and converged to a mortality plateau for both outbred and inbred beetles.T HE evolution of life span, mortality rates, and patterns of senescence is of substantial interest because there is tremendous variation in these traits at all taxonomic levels (Promislow 1991) and because of the medical implications of understanding the genetics underlying mortality rates. Studies on mice, Drosophila, and Caenorhabditis elegans have identified numerous genes that influence life span and/or rates of senescence (Harshman 2002). Recent studies of life span in Drosophila melanogaster indicate that inheritance of life span can be quite complex, with both dominance and epistasis having significant effects on variation in life span (Harshman 2002;Leips and Mackay 2002;Mackay 2002;Spencer et al. 2003;Spencer and Promislow 2005). These studies also show that the genetic architecture (number of genes and degree of allelic and genic interactions) underlying life span differs between the sexes and depends on the environmental conditions in which individuals are reared.One of the major genetic mechanisms proposed to underlie senescence is the accumulation in populations of late-acting deleterious alleles due to the declining force of selection with increasing age (mutation-accumulation theory) (Hughes and Reynolds 2005). Research has now identified many genes and chromosomal regions (QTL) that affect life span in model organisms but we have few data on the frequency of deleterious alleles affecting life span (De Luca et al. 2003;Carbone et al. 2006). We have less data on the sources of variation in deleterious alleles and the age specificity of expression of those alleles and thus their effects on age-specific mortality rates.Inbreeding studies are a com...

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The Genetic Architecture of Life Span and Mortality Rates: Gender and Species Differences in Inbreeding Load of Two Seed-Feeding Beetles

et al. 2006

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Influência de genótipos de couve (Brassica oleracea L. var. acephala DC.) na biologia de Plutella xylostella (L., 1758) (Lepidoptera: Plutellidae)

Boiça

Tagliari

Pitta³

et al. 2011

Ciênc. agrotec.

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Objetivou-se, com este trabalho, avaliar a influência de alguns genótipos de couve (Brassica oleracea L. var. acephala DC.) no desenvolvimento de Plutella xylostella (L., 1758) (Lepidoptera: Plutellidae). Os genótipos avaliados foram: Manteiga de Ribeirão Pires I-2620, Roxa I-919, Manteiga de São José, Manteiga de Monte Alegre, Pires 2 de Campinas, Couve Comum, Couve de Arthur Nogueira 2, Couve de Arthur Nogueira 1. Lagartas recém-eclodidas foram mantida em discos foliares de 8 cm de diâmetro para cada genótipo. Foram analisados os seguintes parâmetros: duração e viabilidade das fases larval e pupal, longevidade e fecundidade de adultos, utilizando análises paramétricas e de agrupamentos para interpretação dos dados. Observou-se um prolongamento em dias no ciclo de P. xylostella, aumento no peso de pupa e maiores valores de viabilidade e fecundidade, durante a segunda geração. O genótipo Couve de Arthur Nogueira 2 foi menos favorável ao desenvolvimento de P. xylostella nas duas gerações, e Couve Comum demonstrou maior influência negativa ao inseto na segunda geração. Manteiga de Ribeirão Pires I-2620 foi o mais suscetível nas duas gerações, agrupando com este na segunda geração Pires 2 de Campinas e Manteiga de São José.

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Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae): Tactics for Integrated Pest Management in Brassicaceae

Bortoli¹,

Polanczyk²,

Vacari³

et al. 2013

Weed and Pest Control - Conventional and New Challenges

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Cited by 3 publications

References 4 publications

The Genetic Architecture of Life Span and Mortality Rates: Gender and Species Differences in Inbreeding Load of Two Seed-Feeding Beetles

The Genetic Architecture of Life Span and Mortality Rates: Gender and Species Differences in Inbreeding Load of Two Seed-Feeding Beetles

Influência de genótipos de couve (Brassica oleracea L. var. acephala DC.) na biologia de Plutella xylostella (L., 1758) (Lepidoptera: Plutellidae)

Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae): Tactics for Integrated Pest Management in Brassicaceae

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