Journal article

HYPERPARASITISM IN 2 NEWLY INTRODUCED PARASITOIDS, EPIDINOCARSIS-LOPEZI AND GYRANUSOIDEA-TEBYGI (HYMENOPTERA, ENCYRTIDAE) AFTER THEIR ESTABLISHMENT IN TOGO


Authors listAGRICOLA, U; FISCHER, HU

Publication year1991

Pages127-132

JournalBulletin of Entomological Research

Volume number81

Issue number2

ISSN0007-4853

DOI Linkhttps://doi.org/10.1017/S0007485300051178

PublisherCambridge University Press


Abstract
In 1988/89 the nature and degree of hyperparasitism in two newly introduced parasitoids of exotic mealybug plant pests were examined in Togo. Associated with Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) (cassava mealybug) five indigenous hymenopterous hyperparasitoids were found adapted to the primary parasitoid Epidinocarsis lopezi (De Santis): Chartocerus sp. A (Signiphoridae), Prochiloneurus insolitus (Alam), P. aegyptiacus (Mercet) (Encyrtidae), Tetrastichus sp. (Eulophidae), and Marietta leopardina Motschulsky (Aphelinidae). The rate of hyperparasitism varied considerably (20-90%). At one sampling site Chartocerus sp. A was most frequent (52%), at the other site P. insolitus was found to dominate (55%). The same hyperparasitoids were associated with Rastrococcus invadens Williams (Hemiptera:Pseudococcidae), but with an additional Chartocerus (sp. B). Hyperparasitism ranged from 56 to 86%, with Chartocerus sp. A being the most important species. Multiple parasitism was observed on several occasions. In spite of generally high hyperparasitism, no detrimental effect on the control efficiency of either primary parasitoid was noticed.



Citation Styles

Harvard Citation styleAGRICOLA, U. and FISCHER, H. (1991) HYPERPARASITISM IN 2 NEWLY INTRODUCED PARASITOIDS, EPIDINOCARSIS-LOPEZI AND GYRANUSOIDEA-TEBYGI (HYMENOPTERA, ENCYRTIDAE) AFTER THEIR ESTABLISHMENT IN TOGO, Bulletin of Entomological Research, 81(2), pp. 127-132. https://doi.org/10.1017/S0007485300051178

APA Citation styleAGRICOLA, U., & FISCHER, H. (1991). HYPERPARASITISM IN 2 NEWLY INTRODUCED PARASITOIDS, EPIDINOCARSIS-LOPEZI AND GYRANUSOIDEA-TEBYGI (HYMENOPTERA, ENCYRTIDAE) AFTER THEIR ESTABLISHMENT IN TOGO. Bulletin of Entomological Research. 81(2), 127-132. https://doi.org/10.1017/S0007485300051178



Keywords


CASSAVA MEALYBUGCOCCOIDEA-PSEUDOCOCCIDAEDESANTIS HYMENOPTERAHOMOPTERAMATILE-FERRERO HEMIPTERAPHENACOCCUS-MANIHOTI HOMRASTROCOCCUS-INVADENS WILLIAMS

Last updated on 2025-02-04 at 06:38