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The effects of constant and alternating temperatures on the reproductive potential, life span, and life expectancy of Anastrepha fraterculus (Wiedemann) (Dipteria: Tephritidae)
Cardoso, V. V; Ferreira, M. P; Montagner, J. M; Fernandez, C. G; Moreira, J. C; Oliveira, A. K.
  • Cardoso, V. V; Universidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Genética. Porto Alegre. BR
  • Ferreira, M. P; Universidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Genética. Porto Alegre. BR
  • Montagner, J. M; Universidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Genética. Porto Alegre. BR
  • Fernandez, C. G; Universidade Federal do Rio Grande do Sul. Instituto de Ciências Básicas da Saúde. Departamento de Ciências Morfológicas. Porto Alegre. BR
  • Moreira, J. C; Universidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Bioquímica. Porto Alegre. BR
  • Oliveira, A. K; Universidade Federal do Rio Grande do Sul. Instituto de Biociências. Departamento de Genética. Porto Alegre. BR
Braz. j. biol ; 62(4b): 775-786, Nov. 2002. tab, graf
Article in English | LILACS | ID: lil-339376
RESUMO
Ovarian development, oviposition, larval eclosion, ornithine decarboxylase (ODC) activity, ovarian, testis and ejaculatory apodeme measurements (length, width, and area), and the number of spermatozoa of Anastrepha fraterculus (Wiedemann) were analyzed at alternating (20º/6ºC and 20º/13°C) and constant (6°C; 25°C) temperatures. Life span and life expectancy were also analyzed for both genders. All the results suggest that temperature, especially alternating temperatures, increase not only male and female reproductive potential but also their life span and life expectancy. These changes can be a powerful strategy triggered by A. fraterculus as a means to survive the stressful temperature conditions found in winter in the apple production region in Brazil, enabling this species to increase its population density and cause apple damage when spring begins
Subject(s)
Full text: Available Index: LILACS (Americas) Main subject: Oviposition / Temperature / Tephritidae Limits: Animals Language: English Journal: Braz. j. biol Journal subject: Biology Year: 2002 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR

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Full text: Available Index: LILACS (Americas) Main subject: Oviposition / Temperature / Tephritidae Limits: Animals Language: English Journal: Braz. j. biol Journal subject: Biology Year: 2002 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR