Journal article

Publication year: 1998

Pages: 49-58

Journal: Entomologia Experimentalis et Applicata

Volume number: 88

Issue number: 1

ISSN: 0013-8703

DOI Link: https://doi.org/10.1046/j.1570-7458.1998.00345.x

Publisher: Wiley

Abstract: 
Cotesia glomerata L. (Hymenoptera: Braconidae) is a parasitoid of early instar larvae of Pieris brassicae L. (Lepidoptera: Pieridae). Late instars of P. brassicae can more often overcome parasitization by hemocytic encapsulation of C. glomerata eggs. Short-term hemocyte responses to parasitization were examined in third and fourth instar larvae of P, brassicae. Total and differential hemocyte counts did not differ between parasitized and unparasitized host larvae. A rapid, but temporary decrease of total hemocyte as well as plasmatocyte numbers was observed immediately after oviposition. Numbers of hemocytes adhering to tissues were shown to be the same in untreated, wounded and parasitized P. brassicae larvae by tracing hemocytes with monoclonal antibodies as markers. The in vitro spreading ability of hemocytes from unparasitized third and fourth instar larvae was lower than that of the last instar's; parasitization, however, had no influence on hemocyte spreading. We therefore suggest that the higher parasitization success of C. glomerata in earlier instars of P. brassicae is mainly due to the low spreading ability of the hemocytes.

Harvard Citation style: Bauer, E., Trenczek, T. and Dorn, S. (1998) Instar-dependent hemocyte changes in Pieris brassicae after parasitization by Cotesia glomerata, Entomologia Experimentalis et Applicata, 88(1), pp. 49-58. https://doi.org/10.1046/j.1570-7458.1998.00345.x

APA Citation style: Bauer, E., Trenczek, T., & Dorn, S. (1998). Instar-dependent hemocyte changes in Pieris brassicae after parasitization by Cotesia glomerata. Entomologia Experimentalis et Applicata. 88(1), 49-58. https://doi.org/10.1046/j.1570-7458.1998.00345.x