All issues
Volume 34 (1990)
- Issue 4 Pages 279-
- Issue 3 Pages 189-
- Issue 2 Pages 89-
- Issue 1 Pages 1-
Volume 34, Issue 4
Displaying 1-12 of 12 articles from this issue
- |<
- <
- 1
- >
- >|
-
Youko NOGUCHI1990 Volume 34 Issue 4 Pages 279-282
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSFour variants of Bombyx mori nuclear polyhedrosis virus (NPV) were isolated from NPV (uncloned) infected cells which had been treated with a mutagen, 5-bromo-2'-deoxyuridine. Two of the variants formed irregularly shaped inclusion bodies. The other variants were defective in polyhedron formation and temperature sensitive, respectively. The latter grew normally at 25°C. At 33°C, it was unable to form polyhedral inclusion bodies and the production of progeny virus was severely restricted.View full abstractDownload PDF (2224K) -
Hideho HARA, Toshio YAHAGI1990 Volume 34 Issue 4 Pages 283-287
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSOpostegoides minodensis (KUROKO) (Lepidoptera: Opostegidae) is one of the cambium miners which cause pith flecks in the wood of the Japanese white birch, Betula platyphylla SUKATCHEV var. japonica (MIQ.) HARA, Hokkaido. Eggs were singly laid on the undersides of leaves, and were mostly located on the medial part of a leaf. Upon hatching, the larva bored into the leaf and reached a branch, mining through the vein and the petiole. After entering into the branch, the larva moved toward the base of a branch or a stem in a fairly straight course. Subsequently, the larva mined in a slender elliptical course, creating 4 or 5 ellipses. The final instar larva invaded the final ellipse of the mine made before the final molt and mined it nearly circular mine. The mature larva bored a long oval exit hole in the bark and dropped to the ground. Larvae mainly mined in branches and in the stems within crowns. In stems, they were most abundant at 2 to 3m below the tops. This was probably caused by the eggs' locations on leaves and the limited larval movement (only 1m) from oviposition sites toward the bases of branches or stems.View full abstractDownload PDF (1323K) -
Hitoshi SAITO, Hajime FUGO1990 Volume 34 Issue 4 Pages 289-295
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSEclosion hormone was purified from 800 pharate-adult heads or 3, 000 adult heads of the saturniid silkmoth, Samia cynthia ricini. Eclosion hormone of Samia was able to induce the precocious eclosion of the pharate-adult of Bombyx mori. The molecular weight of Samia eclosion hormone from pharate adult or adult heads was estimated to be 8, 500±1, 000 daltons by gel-filtration on Sephadex G-50 (superfine). It was concluded that eclosion hormone is not species-specific, at least in two lepidopteran species investigated.View full abstractDownload PDF (663K) -
I. Adsorption of Nonoccluded Viruses to Permissive and Nonpermissive CellsKatsuo TSUDA, Eiichi MIZUKI, Takeshi KAWARABATA, Keio AIZAWA1990 Volume 34 Issue 4 Pages 297-302
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSNonoccluded viruses (NOVs) of Xestia c-nigrum NPV and Bombyx mori NPV were mixed with three cell lines, Spodoptera frugiperda (IPLB-SF-21AEII), Mamestra brassicae (NIAS-Mb-32), and S.P.C. Bm 36 (QUIOT, 1982). Nonoccluded viruses of X. c-nigrum NPV T-3 were rapidly adsorbed to permissive S. frugiperda and S.P.C. Bm 36 cells. However, adsorption of NOVs with M. brassicae cells were not achieved. Nonoccluded viruses of B. mori NPV K-4 were also adsorped to nonpermissive S. frugiperda cells, however there was no evidence for viral replication.View full abstractDownload PDF (728K) -
I. Transfection with Virus DNA to Permissive and Nonpermissive CellsKatsuo TSUDA, Eiichi MIZUKI, Takeshi KAWARABATA, Keio AIZAWA1990 Volume 34 Issue 4 Pages 303-308
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSTransfection with Xestia c-nigrum NPV DNA produced plaques on both permissive Spodoptera frugiperda (1, 153PFU/μg DNA) and S.P.C. Bm36 cells (QUIOT, 1982: 1, 236PFU/μg DNA) employing the calcium phosphate precipitation technique. Nonpermissive Mamestra brassicae cells were not transfected with X. c-nigrum NPV DNA. B. mori NPV DNA was only infectious to S.P.C. Bm 36 cells (454PFU/μg DNA) and was not infectious to nonpermissive S. frugiperda and M. brassicae cells by transfection. The in vitro host range of the infectious DNA paralleled that of NOV.View full abstractDownload PDF (1589K) -
IV. Laboratory and Field Tests on Development of Organophosphorus ResistanceTsutomu SAITO1990 Volume 34 Issue 4 Pages 309-314
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSThe development of organophosphorus resistance of Aphis gossypii populations was studied by determinating individual aliesterase activity in laboratory and field tests. When potato populations were treated with malathion, individuals with high enzyme activity were selected. Intensity of selection pressure was dependent upon insecticide concentration. Distribution of individual enzyme activity in each treatment did not change much after one month. High enzyme activity in a melon clone was maintained by breeding for 50 generations for approximately one year, but with very broad distributions in the same generation. In the greenhouse eggplant, ratio of individuals with high activity increased in correspondence with insecticide spraying. In the case of outdoor eggplants, however, such increases were a passing phenomenon. Alatae with low activity immigrated vigorously into these populations.View full abstractDownload PDF (766K) -
Masaharu MATSUI, Hiroaki NAKAMORI, Tsuguo KOHAMA, Yoshinori NAGAMINE1990 Volume 34 Issue 4 Pages 315-317
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSAnnihilation of male melon flies with cue-lure was conducted on Iheya Is. The results showed that although no wild flies were subsequently caught with cue-lure traps after intensification of distribution of cue-lure strings, the mating rates of mature females did not decrease significantly (p>0.05) compared with those on the other control islands. The infestation rates of the host fruits in this period were not always lower than those of the same months in the previous year. These results suggested that the suppression of melon fly reproduction through male annihilation with cue-lure is problematic.View full abstractDownload PDF (421K) -
Kenjiro KAWASAKI, Hajime SUGIE1990 Volume 34 Issue 4 Pages 317-319
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSEffectiveness of a simple cone trap was examined in a wind tunnel and a field cage. The cone trap was more effective for capture of Acanthoplusia agnata and Autographa nigrisinga males than the water-pan trap.View full abstractDownload PDF (416K) -
Kenjiro KAWASAKI, Hajime SUGIE1990 Volume 34 Issue 4 Pages 319-320
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSMating time of Autographa nigrisigna was examined. Copulated individual increased to 79.8% on 3 days after emergence at 20°C. Copulation was observed to occur from 2.5hr after light off and showed a peak at 4.5hr under 16L-8D. Copulations were observed earlier when they were kept under continuous light and moved to dark than under 16L-8D. Bioassay of sex pheromone in a wind tunnel required from 0.01 to 0.1 female equivalent of sex pheromone extract.View full abstractDownload PDF (262K) -
Kazuya NAGAI1990 Volume 34 Issue 4 Pages 321-324
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSOrius sp. eggs were laid on the petioles of white clover Trifolium repens L. and treated with various insecticides by the dipping method. Oxythioquinox, phenisobromolate, pirimicarb, phosalone and dichlorvos showed low toxicity to hatchability of the eggs. However, carbaryl, malathion-BPMC mixture, methidathion, phenthoate and fenthion showed high toxicity to the eggs. When 8 insecticides were sprayed on eggplant hosts for thrips (dominant species was Thrips palmi KARNY.) and their predator Orius sp., buprofezin and phenisobromolate showed no toxicity to the latter, Oxythioquinox, dichlorvos and pirimicarb showed low toxicity to Orius sp.; phosalone, chlorfluazuron and flufenoxuron showed high toxicity. Chlorfluazuron and flufenoxuron especially inhibited the moult of the predator over the long term.View full abstractDownload PDF (520K) -
Masahiko KUWAHARA1990 Volume 34 Issue 4 Pages 324-326
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSWandering fifth-instar larvae of 3 strains of almond moth were bioassayed for sensitivity to contact insecticides by topical application methods. The strains showed similar sensitivity patterns to insecticides tested. Synthetic pyrethroids and methomyl were the most toxic, followed by organophosphates such as chlorpyrifos, chlorpyrifos-methyl, dichlorvos, Naled etc. Organochlorines, DDT, endrin and dieldrin exhibited no insecticidal activity.View full abstractDownload PDF (418K) -
Kazuhiko HACHIYA1990 Volume 34 Issue 4 Pages 326-329
Published: November 25, 1990
Released on J-STAGE: February 12, 2009
JOURNAL FREE ACCESSDownload PDF (421K)
- |<
- <
- 1
- >
- >|