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  • 1
    ISSN: 1573-8248
    Keywords: Biosteres tryoni ; Ceratitis capitata ; survivorship potential fecundity ; realized fecundity ; Biosteres tryoni ; Ceratitis capitata ; survie ; fécondité potentielle ; fécondité réelle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé LesBiosteres tryoni élevés en laboratoire atteignaient le sommet de leur maturation ovarienne le 5e jour après l'émergence chez les ♀♀ vierges et le 7e jour chez les ♀♀ accouplées. Quand il n'était pas permis aux ♀♀ de pondre, le contenu des oocytes était hydrolysé et réabsorbé. Cependant, quand des hôtes étaient disponibles pour la ponte, on notait une augmentation significative du taux de maturation des œufs. La moyenne de la fécondité réalisée durant la vie était 71,7±8,1 et 69,0±6,7 et la longévité moyenne était 13,5±0,9 et 15,1±0,6 jours pour les ♀♀ accouplées et les ♀♀ vierges respectivement.
    Notes: Abstract Laboratory-rearedBiosteres tryoni (Cameron) reached peak ovarian maturation on the 5th and 7th days after emergence in unmated and mated ♀♀, respectively. When ♀♀ were not allowed to oviposit, contents of the oocytes were hydrolyzed and reabsorbed. However, when hosts were available for oviposition a significant increase of egg maturation rate was noticed. Mean realized fecundity during the life span was 71.7±8.1 and 69.0±6.7, and mean longevity was 13.5±0.9 and 15.1±0.6 days for mated and unmated ♀♀ respectively.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-6857
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Chromosome numbers of over 90 species of mealybugs are presented (71 for the first time). The diploid chromosome number (2n) ranged from 8 to 64, but over 68% of the species had 2n=10, and 10 is considered to represent the ancestral 2n in this family. Since only 4 species had 2n〈10,and 26 had 2n〉10, it is concluded that in this family increases in 2n occurred much more often than decreases. The data are compared to those from two other coccid families, the Diaspididae and the Eriococcidae. Unexpectedly, in both the Pseudococcidae and the Diaspididae the frequency of species with the modal 2n is lowest among species from monotypic genera and from genera from which only a single species was examined, and increases with the increase in the number of species examined per genus.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 20 (1975), S. 47-73 
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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