PARASITES RECOVERED FROM THE OVERWINTERING GENERATION OF THE SPOTTED TENTIFORM LEAFMINER, PHYLLONORYCTER BLANCARDELLA (LEPIDOPTERA: GRACILLARIIDAE) IN PEST-MANAGEMENT APPLE ORCHARDS IN SOUTHERN ONTARIO

1985 ◽  
Vol 117 (3) ◽  
pp. 371-374 ◽  
Author(s):  
E.A.C. Hagley
Keyword(s):  
Pest Management ◽  
Apple Orchards ◽  
Southern Ontario ◽  
Phyllonorycter Blancardella

AbstractThe braconid Pholetesor (= Apanteles) ornigis (Weed) was the major parasite of the spotted tentiform leafminer, Phyllonorycter blancardella (Fabr.), at 21 sites, in 9 counties in southern Ontario. The eulophids Sympiesis sericeicornis (Nees) (12 sites, 6 counties), S. dolichogaster Ashmead (9 sites, 5 counties), S. marylandensis Girault (8 sites, 6 counties) and Pnigalio maculipes (Crawford) (6 sites, 5 counties) were the major chalcidoids recovered. Other species recovered were 10 eulophids, 2 pteromalids, and 2 ichneumonids. The major hyperparasite of P. ornigis was S. sericeicornis, but S. dolichogaster, Habrocytus sp., Catolaccus sp., Gelis sp., and Hypopteromalus sp. were also recovered.

Pest management systems affect composition but not abundance of phytoseiid mites (Acari: Phytoseiidae) in apple orchards

2013 ◽  
Vol 62 (4) ◽  
pp. 525-537 ◽  
Author(s):  
Árpád Szabó ◽  
Béla Pénzes ◽  
Péter Sipos ◽  
Tamás Hegyi ◽  
Zsuzsanna Hajdú ◽  
...  
Keyword(s):  
Pest Management ◽  
Management Systems ◽  
Apple Orchards ◽  
Phytoseiid Mites ◽  
Pest Management Systems

A SURVEY OF PREDATORY MITES IN ONTARIO APPLE ORCHARDS WITH DIVERSE PESTICIDE PROGRAMS

1991 ◽  
Vol 123 (6) ◽  
pp. 1163-1174 ◽  
Author(s):  
H.M.A. Thistlewood
Keyword(s):  
Predatory Mites ◽  
Apple Orchards ◽  
Amblyseius Fallacis ◽  
Phyllonorycter Blancardella ◽  
Zetzellia Mali

AbstractLeaves were collected between 28 July and 10 September from 36 (1986) and 85 (1987) apple orchards, and examined for mites. Twelve species of Phytoseiidae were found: Amblyseius fallacis (Garman), Typhlodromus longipilus Nesbitt, A. andersoni (Chant), T. caudiglans Schuster, T. pyri Scheuten, T. pomi (Parrott), Phytoseius macropilis (Banks), T. herbertae Chant, A. driggeri Specht, A. finlandicus (Oudemans), T. conspicuus (Garman), and A. pusillus (Kennett), in order of frequency. The stigmaeid mites Zetzellia mali (Ewing) and Agistemus fleschneri Summers, a complex of erythraeid mites of Balaustium spp. and Hauptmannia spp., and tydeid mites, primarily Tydeus spp., were other common predatory species. Species of Tetranychidae, Bdellidae, Eriophyidae, Winterschmidtiidae, and Tarsonemidae, also were collected.Predatory mites were present each season in all abandoned orchards and in 43–74% of the commercial orchards. Their abundance in commercial orchards was compared with the use of insecticides applied only for control of the spotted tentiform leafminer, Phyllonorycter blancardella (Fabr.). Fewer (P < 0.05) phytoseiids occurred where pyrethroids were employed than in sites without pyrethroids, but differences were not found for similar use of the carbamoyl oxime, methomyl. Fewer (P < 0.05) stigmaeids occurred in sites treated with methomyl than in sites without methomyl, whereas such differences were not found for pyrethroid use.

ABUNDANCE AND PHENOLOGY OF PARASITOIDS OF THE SPOTTED TENTIFORM LEAFMINER, PHYLLONORYCTER BLANCARDELLA (LEPIDOPTERA: GRACILLARIIDAE), IN CONNECTICUT

1984 ◽  
Vol 116 (3) ◽  
pp. 443-449 ◽  
Author(s):  
Chris T. Maier
Keyword(s):  
Pest Management ◽  
New Records ◽  
Critical Role ◽  
Seasonal Abundance ◽  
Relative Importance ◽  
Parasitoid Species ◽  
Native Parasitoids ◽  
Emergence Patterns ◽  
Phyllonorycter Blancardella ◽  
Pholetesor Ornigis

AbstractParasitoids of the trivoltine spotted tentiform leafminer, Phyllonorycter blancardella (Fabr.), were studied in Connecticut apple orchards to determine their relative importance, emergence patterns, and seasonal abundance. Sixteen parasitoid species, including 12 eulophids, emerged from mines formed by 4th- and 5th-instar leafminer larvae. The species were primary, secondary, or facultative secondary parasitoids. Five were new records. The braconid Pholetesor ornigis (Weed) was the most abundant in the first and third leafminer generations, and the eulophid Sympiesis marylandensis Girault was the most abundant in the second generation. Ratios of parasitoids to Phyllonorycter spp. were generally higher in samples from unsprayed trees than in those from sprayed trees. Major parasitoids usually emerged 1 to 4 wk before their larval hosts became plentiful. Sweep samples indicated relatively high abundance of one or both major parasitoids during the first and second leafminer generations. Monitoring of parasitoids and the judicious use of insecticides may have a critical role in pest management programs utilizing native parasitoids of leafminers.

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