Investigations into the biological control of Nezara viridula (L.) by the egg parasitoid Trissolcus basalis (Wollaston) in eastern Australia

1992 ◽  
Author(s):  
◽  
Anthony Robert Clarke
Keyword(s):  
Biological Control ◽  
Egg Parasitoid ◽  
Nezara Viridula ◽  
Trissolcus Basalis ◽  
Eastern Australia

The control of Nezara viridula L. with introduced egg parasitoids in Australia. A review of a 'landmark' example of classical biological control

1990 ◽  
Vol 41 (6) ◽  
pp. 1127 ◽  
Author(s):  
AR Clarke
Keyword(s):  
Biological Control ◽  
West Indies ◽  
Classical Biological Control ◽  
Egg Parasitoid ◽  
Egg Parasitoids ◽  
Nezara Viridula ◽  
Trissolcus Basalis ◽  
Specific Identification ◽  
History Of ◽  
Material Information

The history of Nezara viridula egg parasitoid introductions into Australia is critically reviewed. Using largely unpublished file material information is presented on the source of parasitoids, specific identification of parasitoids, numbers of parasitoids reared and released, and establishment and effects in the field. At least four species of egg parasitoids, in three genera, have been introduced and liberated into Australia since biological control efforts were first begun in 1933. There are records of 11 introductions involving Trissolcus basalis (Wollaston) (Egypt 1933; West Indies 1952-53; South Africa 1980; Brazil 1980; U.S.A. 1979-8 l), Trissolcus mitsukurii (Ashmead) (Japan l962), Ooencyrtus submetallicus (Howard) (West Indies 1952-53), and Telenomus chloropus (Thomson) (Japan 1962; Japan via U.S.A. 1980). Doubt is cast on the specific status of introductions from Italy (1956) and Pakistan (1 961), which are recorded in the literature as T, basalis. Evidence is presented that there is currently not enough information available to determine the specific classifications of these importations. Three programs in which Australian field populations of Trissolcus were bred and released elsewhere in Australia are also recorded. Post-release evaluation of introduced N. viridula egg parasitoids in Australia is reviewed. It is proposed that there is only circumstantial evidence to support the claim that N. viridula is under 'good' biological control by T. basalis in Australia. Areas of investigation that are of the most significance to current workers in N. viridula biological control are highlighted in the discussion.

scholarly journals Distribution of Gonipterus Species and Their Egg Parasitoids in Australia: Implications for Biological Control

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 969
Author(s):  
Michelle L. Schröder ◽  
Helen F. Nahrung ◽  
Natalia M. de Souza ◽  
Simon A. Lawson ◽  
Bernard Slippers ◽  
...  
Keyword(s):  
Biological Control ◽  
Parasitoid Wasp ◽  
Egg Parasitoid ◽  
Egg Parasitoids ◽  
Undescribed Species ◽  
Egg Capsules ◽  
Eastern Australia ◽  
Cryptic Species Complex ◽  
Unidentified Species ◽  
Species Composition And Distribution

Gonipterus species are pests of Eucalyptus plantations worldwide. The egg parasitoid wasp Anaphes nitens is used in many countries for the biological control of Gonipterus spp. Recent taxonomic studies have shown that the three invasive Gonipterus spp., which were previously considered as G. scutellatus, form part of a cryptic species complex. These taxonomic changes have implications for the biological control of Gonipterus spp. The aims of this study were to understand the species composition and distribution of Gonipterus spp. and their egg parasitoids in Australia. Gonipterus spp. adults and egg capsules were collected in south-eastern Australia and Tasmania. Adult Gonipterus were identified using morphology and DNA barcoding. Parasitoids were reared from Gonipterus egg capsules and identified. Thirteen Gonipterus species were collected: twelve species were found on the Australian mainland and one species in Tasmania. These included three described species, four previously recognized but undescribed species, two undescribed species and four unidentified species. Five egg parasitoid species that attack Gonipterus spp. were identified. Anaphes nitens, Centrodora damoni and Euderus sp. were identified on the Australian mainland and A. tasmaniae and A. inexpectatus were identified in Tasmania. The results from this study will contribute to the improvement of Gonipterus biological control in the future.

Sign in / Sign up

Export Citation Format

Share Document