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The biosystematic relations between a thelytokous and an arrhenotokous form ofAphytis mytilaspidis (Le Baron) [Hymenoptera: Aphelinidae]

2. Comparative biological and morphological studies

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Abstract

Biological and morphological characters of the thelytokous and arrhenotokous forms ofA. mytilaspidis and their hybrids were investigated.

Some biological differences between the thelytokous and arrhenotokous forms were found. The former is adapted to warmer condition and will parasitizeHemiberlesia lataniae as well asDiaspis echinocacti, while the latter will not parasitizeH. lataniae. The overall fecundity of the thelytokous form is lower than that of the arrhenotokous form, whereas the “effective fecundity”, female progeny per female parent, is higher in the thelytokous form.

Apart from the no. of setae in the wings delta, there are no distinguishing morphological characters between the arrhenotokous and thelytokous forms.

Résumé

Les caractères morphologiques et biologiques des formes thélytoques et arrhénotoques deA. mytilaspidis et de leurs hybrides ont été examinés. Quelques différences biologiques ont été mises en évidence, les formes thélytoques sont adaptées à des températures plus élevées et peuvent parasiterHemiberlesia lataniae aussi bien queDiaspis echinocacti, tandis que les formes arrhénotoques ne sont pas capables de parasiterH. lataniae. La fécondité totale de la forme thélytoque est moindre que celle de la forme arrhénotoque, alors que la «fécondité réelle», c'està-dire la descendance femelle à partir d'une femelle est plus importante chez la forme thélytoque.

A l'exception du nombre de soies dans le delta alaire, il n'y a pas de caractère morphologique différenciant les deux formes.

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Références

  • Anderson, W. W.—1968. Further evidence for coadaptation in crosses between geographic populations ofDrosophila pseudoobscura.—Genet. Res.,12, 317–330.

    CAS  PubMed  Google Scholar 

  • Brncic, D.—1954. heterosis and the integration of the genotype in geographic populations ofD. pseudoobscura.—Genetics Princeton,39, 77–88.

    Google Scholar 

  • Compere, H.—1955. A systematic study of the genusAphytis (Howard) [Hymenoptera: Aphelinidae] with description of new species.—Univ. Calif. Publs. Ent.,10, 271–320.

    Google Scholar 

  • DeBach, P.—1964. Some species ofAphytis (Howard) [Hymenoptera: Aphelinidae] in Greece.—Annal. Institute Phytopath. Benaki,7, 5–18.

    Google Scholar 

  • Gerson, U.—1967.Aphytis riadi, a synonym ofA. chilensis [Hymenoptera: Aphelinidae].—Ann. ent. Soc. Am.,60, 1116–1118.

    Google Scholar 

  • MacFarquhar, A. M. &Robertson, F. W.—1963. The lack of evidence for coadaptation in crosses between geographical races ofDrosophila subobscura.—Coll. Genetic Research,4, 104–131.

    Google Scholar 

  • Rössler, Y. &DeBach, P.,—1972. The biosystematic relations between a thelytokous and an arrhenotokous form ofAphytis mytilaspidis (Le Baron) [Hymenoptera: Aphelinidae] I. The reproductive relations.—Entomophaga,17, 391–423

    Google Scholar 

  • Vetukhiv, M.—1954. Integration of the genotype in local populations of three species ofDrosophila.—Evolution Lancaster Pa.,8, 241–251.

    Google Scholar 

  • ——1956. Fecundity of hybrids between geographic populations ofD. pseudoobscura.—Evolution Lancaster Pa.,10, 139–146.

    Google Scholar 

  • ——1957. Longevity of hybrids between geographic populations ofD. pseudoobscura.—Evolution Lancaster Pa.,11, 348–360.

    Google Scholar 

  • Wallace, B.—1955. Interpopulation hybrids inD. melanogaster.—Evolution Lancaster Pa.,9, 302–316.

    Google Scholar 

  • White, M. J. D.—1964. Cytogenetic mechanisms in insect reproduction.—Symp. Royal Soc. Lond., No. 2, 1–12.

    Google Scholar 

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Authors and Affiliations

  1. Division of Bio-Control, University of California at Riverside, Calif., USA

    Y. Rössler & P. DeBach

Authors
  1. Y. Rössler
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  2. P. DeBach
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Additional information

The investigation is a part of a Ph. D. dissertation submitted to the University of California, and was supported by grants Nos. GB 7444 and GB 17829 of the National Science Foundation.

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Rössler, Y., DeBach, P. The biosystematic relations between a thelytokous and an arrhenotokous form ofAphytis mytilaspidis (Le Baron) [Hymenoptera: Aphelinidae]. Entomophaga 17, 425–435 (1972). https://doi.org/10.1007/BF02371648

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