Journal article
Authors list: AGRICOLA, U; FISCHER, HU
Publication year: 1991
Pages: 127-132
Journal: Bulletin of Entomological Research
Volume number: 81
Issue number: 2
ISSN: 0007-4853
DOI Link: https://doi.org/10.1017/S0007485300051178
Publisher: Cambridge 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 style: AGRICOLA, 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 style: AGRICOLA, 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 MEALYBUG; COCCOIDEA-PSEUDOCOCCIDAE; DESANTIS HYMENOPTERA; HOMOPTERA; MATILE-FERRERO HEMIPTERA; PHENACOCCUS-MANIHOTI HOM; RASTROCOCCUS-INVADENS WILLIAMS