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Volume 25 (1990)
- Issue 4 Pages 409-
- Issue 3 Pages 333-
- Issue 2 Pages 153-
- Issue 1 Pages 1-
Volume 25, Issue 3
Displaying 1-11 of 11 articles from this issue
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Yoji TAKADA, Tomotoshi IMAHASE, Masachika HIRANO, Toshiki HIROYOSHI1990 Volume 25 Issue 3 Pages 333-338
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSThe locus for a recessive resistance gene to permethrin on the third chromosome was determined in a Danish 228e2b strain and also in a Japanese Akagi PP5 strain of the housefly. The resistance gene (r) was calculated to locate at the right side of 40.5 unit from the locus of a visible marker pw (pointed-wing) in the former strain and 42.4 unit in the latter strain, respectively. Thus, the r genes in both the strains seemed to be allelic with each other. Judging from their location on the third chromosome and from some physiological properties to insecticides, they might also be allelic to kdr (knockdown-resistance) gene already known, or at least, they are located very close to the gene.View full abstractDownload PDF (545K) -
Kazuma MATSUMOTO1990 Volume 25 Issue 3 Pages 339-346
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSEffects of density on the survival and development of the pine spittlebug, Aphrophora flavipes were tested by rearing individuals on 2- or 3-year-old potted Japanese red pine seedlings in an outdoor cage from 1st or 2nd instar to adult emergence and varying the initial number of individuals. The rate of survivorship was highest at the medium density (9 or 12 individuals/tree) and decreased with increasing density. Also when the density was very low (3 individuals/tree), the survival rate was relatively low, indicating that some degree of aggregation has a beneficial effect. The developmental rate and body size of emerged adults were inversely correlated with the nymphal density. Branching of the 3-year-old host tree complicated the density effect by allowing the movements of nymphs from one terminal to another.View full abstractDownload PDF (725K) -
Hiroshi NAKAKITA1990 Volume 25 Issue 3 Pages 347-353
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSThe hormonal control of the inhibition of pupation in Tribolium freemani larvae caused by crowding has been investigated using several types of anti-juvenile hormone agents (AJHAs); precocenes, imidazoles, ETB and FMev. The precocenes were the only chemicals which could induce the pupation by releasing the inhibition, although FMev seemed to have weaker effect, compared to them. An exogenous juvenoid (S31183) administrated along with the precocene antagonized the action of the precocene to the larvae. These results suggest that the corpora allata of the larvae reared under crowded conditions secrete high levels of juvenile hormone. The characteristics observed in the beetle suggest that this insect could be applied as a test animal for either screening or assaying new insect growth regulators.View full abstractDownload PDF (597K) -
Masayuki SAKUMA, Hiroshi FUKAMI1990 Volume 25 Issue 3 Pages 355-368
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSAttractant components of the aggregation pheromone of the German cockroach, Blattella germanica (L.) were isolated from frass-contaminated filter paper. Successive purification steps were monitored by olfactometer assay, and each attractant component was eventually identified by GC-MS and the assay on each preparative GC fraction. The attractatn comprised several volatile amines. Amine evaporation was restricted by salt formation with acid(s) in the excreta. All the identified ammonia and 12 amines exerted both chemotaxis and anemotaxis on B. germanica nymphs. Typical excretory materials such as ammonia, methylamine, dimethylamine, and trimethylamine were the major components. The most active component was 1-dimethylamino-2-methyl-2-propanol (ED50=ca. 10 pmol /l air), which was 50 to 1, 000 times more active than the others.View full abstractDownload PDF (1141K) -
Norie ITAKURA, Yoshitaka TSUBAKI, Yosiaki ITO1990 Volume 25 Issue 3 Pages 369-374
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSCorrelation of male body size and virginity to calling bouts were investigated in a cricket, Pteronemobius nigrofasciatus (MATSUMURA). When two virgin males were confined in a cup, they tended to call separately. But when two mated males were confined together, call overlapping was not different from chance occurrence, and the total calling duration of larger males was longer than that of smaller individuals. When these males were isolated, calling duration of the latter tended to be longer than that of the former.View full abstractDownload PDF (514K) -
Takashi KUBOTA, Yukio ISHIKAWA1990 Volume 25 Issue 3 Pages 375-382
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSA glutathione S-transferase (GST) of the onion fly, Hylemya antiqua MEIGEN, was purified to apparent homogeneity by ammonium sulfate fractionation, anion exchange chromatography and glutathione-affinity chromatography. The enzyme was a homodimer of 50.0 kD with a subunit of 23.5 kD, and had an isoelectric point of 5.0. The bisubstrate reaction catalyzed by this enzyme followed a sequential mechanism rather than a ping-pong mechanism. Although the presence of other GST isozymes in the onion fly cannot be denied, the purified enzyme showed multiple functionality in addition to glutathione conjugation : bilirubin and hematin binding, and glutathione peroxidase activity.View full abstractDownload PDF (781K) -
Naoto YOKOI1990 Volume 25 Issue 3 Pages 383-388
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSThe copulation process of a longicorn beetle, Psacothea hilaris consists of two successive events; frequent, short-time penis insertion (first stage) and a single long-time insertion (second stage). It was found that number of sperm stored in the Spermatheca decreased to about 2% of that of control females (which had mated only once), when the second males did first stage copulation without ejaculation. Second males discharged their rivals' sperm during first stage copulation. Scanning microscopic observations showed that the distal portion of the penis had a triangular process and pointed micro-bristles. Sperm displacement in this species is suggested by our observation of the removal of rival sperm by these characteristic structures on the penis.View full abstractDownload PDF (1313K) -
Yutaka SAITO1990 Volume 25 Issue 3 Pages 389-396
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSTwo new species of the genus Schizotetranychus were described. They have formerly known as infra-specific forms of Schizotetranychus celarius (BANKS). Schizotetranychus miscanthi SAITO, n. sp. was collected from a perennial grass, Miscanthus sinensis ANDERSS, in Kyushu, Shikoku and Okinawa. It differs from S. celarius in the relative lengths of several dorsal setae and their arrangements. Schizotetranychus longus SAITO, n. sp. was collected from a dwarf bamboo, Sasa senanensis (FRANCH. et SAV.) in Hokkaido and Shikoku. It differes from S. celarius in the relative lengths of several dorsal setae, and from S. miscanthi n. sp. in the form of the empodial claws and in the position of the dorsocentral setae (C1).View full abstractDownload PDF (649K) -
Kimiko OKABE, Hiroshi AMANO1990 Volume 25 Issue 3 Pages 397-404
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSFive alcohols (ethanol, n-propanol, iso-butanol, iso-pentanol, and 2-methyl-1-butanol), extracted and identified from culture filtrates of Fusarium oxysporum, were examined for their attractiveness for Rhizoglyphus robini in sand. Mites preferred the mixed-alcohols (90 : 1 : 4 : 4 : 1 in the order named) to sterile water, and they were attracted to the alcohols from a distance of 3 cm within 24 hr. Although each alcohol showed a varying degree of attractancy for mites, the effect was most extensive in ethanol, iso-butanol and iso-pentanol. Furthermore, a piece of healthy rakkyo bulb attracted mites through sand, but its intensity was strongly enhanced by pouring the mixed-alcohols on the piece, which was similar to mite preference for Fusarium-infected rakkyo bulbs over healthy bulbs.View full abstractDownload PDF (676K) -
Masahiko MURAJI, Fusao NAKASUJI1990 Volume 25 Issue 3 Pages 405-407
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSDownload PDF (452K) -
Masami TAKAGI, Takeshi OGATA1990 Volume 25 Issue 3 Pages 407-408
Published: August 25, 1990
Released on J-STAGE: February 07, 2008
JOURNAL FREE ACCESSDownload PDF (337K)
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