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• Matériel et conditions de reproduction du ver à soie de chêne Antheraea pernyi Guer (Bombycidae)

  58-60

  Veturia – Ileana Nueleanu

  Views:

  68

  In this study we highlighted the conditions that need to be fulfilled in order to have successful oak silkworm reproduction.
  Thus, conditions for best cocoon hibernation should be as follows: strata of 10-15 cm with optimal temperature around 0oC, relative humidity of 60-70%. The cocoons must be moved every 10 days and must also be daily aired.
  Butterfly mating should take place either the night of their coming out or the second day. It takes 14-15 hours; male butterflies outnumber females by 10%.
  After mating, the optimal temperature for laying eggs is 18-20oC; relative humidity is 80%; egg laying takes place in the dark.

• L’incubation et l’éclosion des oeufs des vers à soie de chêne Antheraea pernyi Guer (Bombycidae)

  61-63

  Veturia - Ileana Nueleanu

  Views:

  67

  In this paper we studied optimal conditions which need to be fulfilled in order to have successful incubation and hatching of eggs of the species Antheraea pernyi Guer.
  The incubation of the eggs of this species implies a proper environment: temperature of 18-21oC, relative humidity of 80%, unvarying light, aeration 2 or 3 times a day and a density of 50 g eggs for a 20/50 cm area.
  In these conditions, the incubation of the first generation lasts 10-12 days and of the second generation up to 8-10 days. The second generation needs higher temperatures (22-26oC) and higher humidity (optimal value 90%).
  In this species, hatching lasts 6-7 days, with a maximum during the second day; it takes place especially early in the morning.