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The Biology of Trichadenotecnum alexanderae Sommerman (Psocoptera: Psocidae). II. Duration of Biparental and Parthenogenetic Reproductive Abilities

B. W. Betz
Journal of the Kansas Entomological Society
Vol. 56, No. 3 (Jul., 1983), pp. 420-426
Stable URL: http://www.jstor.org/stable/25084429
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Biology of Trichadenotecnum alexanderae Sommerman (Psocoptera: Psocidae). II. Duration of Biparental and Parthenogenetic Reproductive Abilities
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Abstract

Female receptivity to mating in Trichadenotecnum alexanderae Sommerman is found to be restricted to the period between an initial teneral state and the onset of oviposition. Females are only able to mate once. Unmated females are able to reproduce by parthenogenesis (thelytoky), but mated females apparently never reproduce by parthenogenesis. Non-teneral males are able to mate at any time and are capable of mating repeatedly. Biparental reproduction in populations of T. alexanderae may be promoted by the males' long survivorship, long duration of mating receptivity, and repeated mating ability. Other promoting factors may include a sex-attractant pheromone produced by females and a patchy distribution of populations. A restriction of mating receptivity must be considered when tests for hybridization are used to determine the reproductive mode of females of a uniparental-biparental species complex.

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