Morphology and biology of Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae), imported from Australia as a parasitoid of pink bollworm (Lepidoptera: Gelechiidae) eggs
Morphological and selected biological studies are described for Trichogrammatoidea bactrae Nagaraja, recently imported into the United States from Australia as an egg parasitoid of the pink bollworm, Pectinophora gossypiella (Saunders). Females maintained at 24 degree C averaged 23.2 plus or minus 6...
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Veröffentlicht in: | Annals of the Entomological Society of America 1990-01, Vol.83 (1), p.46-54 |
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creator | Hutchison, W.D. (University of Minnesota, St. Paul, MN) Moratorio, M Martin, J.M |
description | Morphological and selected biological studies are described for Trichogrammatoidea bactrae Nagaraja, recently imported into the United States from Australia as an egg parasitoid of the pink bollworm, Pectinophora gossypiella (Saunders). Females maintained at 24 degree C averaged 23.2 plus or minus 6.3 (SD) eggs per ovary. Unlike many Trichogramma species that apparently have four larval instars, T. bactrae develops through only two instars. T. bactrae development, mortality, and adult fecundity and longevity were examined at several constant temperatures in the laboratory. Host age suitability studies were done at 25 degree C. Across all temperatures tested (15-32.5 degree C), the majority (x super(-) = 83.7%) of T. bactrae emerged between 0700-1000 hours, and the sex ratio (progeny from mated females) was predominately female (x super(-) = 64.9%). Virgin females exclusively produced males. Immature mortality ranged from 10.6 to 34.6% between 15 and 30 degree C; however, at 32.5 degree C mortality was 73%. |
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Host age suitability studies were done at 25 degree C. Across all temperatures tested (15-32.5 degree C), the majority (x super(-) = 83.7%) of T. bactrae emerged between 0700-1000 hours, and the sex ratio (progeny from mated females) was predominately female (x super(-) = 64.9%). Virgin females exclusively produced males. Immature mortality ranged from 10.6 to 34.6% between 15 and 30 degree C; however, at 32.5 degree C mortality was 73%.</description><subject>ANATOMIA</subject><subject>ANATOMIE</subject><subject>ANATOMY</subject><subject>AUSTRALIA</subject><subject>AUSTRALIE</subject><subject>Biological and medical sciences</subject><subject>BIOLOGICAL CONTROL</subject><subject>CONTROL BIOLOGICO</subject><subject>Fundamental and applied biological sciences. 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(University of Minnesota, St. Paul, MN)</au><au>Moratorio, M</au><au>Martin, J.M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Morphology and biology of Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae), imported from Australia as a parasitoid of pink bollworm (Lepidoptera: Gelechiidae) eggs</atitle><jtitle>Annals of the Entomological Society of America</jtitle><date>1990-01</date><risdate>1990</risdate><volume>83</volume><issue>1</issue><spage>46</spage><epage>54</epage><pages>46-54</pages><issn>0013-8746</issn><eissn>1938-2901</eissn><coden>AESAAI</coden><abstract>Morphological and selected biological studies are described for Trichogrammatoidea bactrae Nagaraja, recently imported into the United States from Australia as an egg parasitoid of the pink bollworm, Pectinophora gossypiella (Saunders). Females maintained at 24 degree C averaged 23.2 plus or minus 6.3 (SD) eggs per ovary. Unlike many Trichogramma species that apparently have four larval instars, T. bactrae develops through only two instars. T. bactrae development, mortality, and adult fecundity and longevity were examined at several constant temperatures in the laboratory. Host age suitability studies were done at 25 degree C. Across all temperatures tested (15-32.5 degree C), the majority (x super(-) = 83.7%) of T. bactrae emerged between 0700-1000 hours, and the sex ratio (progeny from mated females) was predominately female (x super(-) = 64.9%). Virgin females exclusively produced males. Immature mortality ranged from 10.6 to 34.6% between 15 and 30 degree C; however, at 32.5 degree C mortality was 73%.</abstract><cop>Lanham, MD</cop><pub>Entomological Society of America</pub><doi>10.1093/aesa/83.1.46</doi><tpages>9</tpages></addata></record> |
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subjects | ANATOMIA ANATOMIE ANATOMY AUSTRALIA AUSTRALIE Biological and medical sciences BIOLOGICAL CONTROL CONTROL BIOLOGICO Fundamental and applied biological sciences. Psychology Gelechiidae GOSSYPIUM HIRSUTUM HYMENOPTERA Insecta INSECTE NUISIBLE INSECTOS DANINOS Invertebrates Lepidoptera LUTTE BIOLOGIQUE Morphology. Histology. Cytology OVA OVULE OVULO PARASITE PARASITES PARASITOS PECTINOPHORA PECTINOPHORA GOSSYPIELLA PEST INSECTS Trichogrammatidae |
title | Morphology and biology of Trichogrammatoidea bactrae (Hymenoptera: Trichogrammatidae), imported from Australia as a parasitoid of pink bollworm (Lepidoptera: Gelechiidae) eggs |
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