巻号一覧
47 巻 (2003)
- 4 号 p. 129-
- 3 号 p. 85-
- 2 号 p. 53-
- 1 号 p. 1-
47 巻, 2 号
選択された号の論文の3件中1～3を表示しています
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原著
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小林 正秀, 上田 明良原稿種別: 原著
専門分野: [not specified]
2003 年 47 巻 2 号 p. 53-60
発行日: 2003年
公開日: 2003/08/25
ジャーナル フリーTo demonstrate the process of occurrence of mass attack by Platypus quercivorus on living trees and the process of tree death after mass attack, the beetles landing on tree trunks of Quercus crispula and Q. serrata were collected with adhesive paper traps, and the number of entry holes bored by the beetles into the trunks were counted in Kyoto, Japan. Within one week after the first collection of the beetle, both the number of beetles collected and the number of entry holes bored by them suddenly reached a peak simultaneously and then decreased quickly. On the killed tree, it took three weeks from the first collection of the beetle to discoloration of all leaves. To reproduce the mass attack artificially, male beetles were introduced to two trees that had never suffered boring attacks until mid-August. As a result, many beetles landed on these trees and a large number of entry holes were bored. Moreover, almost all leaves of one of these trees had become discolored by 27 days after introduction of the beetles, and the tree had died by the following spring. These results suggest that the first entry holes bored by male beetles triggered the mass attack.抄録全体を表示PDF形式でダウンロード (83K) -
宮園 稔, 稲垣 秀一郎, 田中 玲爾, 上山 良人, 武田 禮二原稿種別: 原著
専門分野: [not specified]
2003 年 47 巻 2 号 p. 61-66
発行日: 2003年
公開日: 2003/08/25
ジャーナル フリーThe diamondback moth, Plutella xylostella that was 2,400-fold resistant to insecticidal proteins of Bacillus thuringiensis serovar kurstaki HD-1 was selected from the susceptible strain. Against the resistant strain, spore combination enhanced the activity of kurstaki HD-1 insecticidal proteins 8,800-fold, which was significantly higher than the enhancement (160-fold) against the susceptible strain. When recombinant Cry1Aa, Cry1Ab or Cry1Ac toxin was fed to the susceptible strain, the spore combination enhanced the activity only 3 to 8-fold. Against the resistant strain, however, the spore combinations with recombinant proteins enhanced the activities more than 900-fold. These results show that the spore combination with insecticidal proteins is also effective to control the diamondback moth larvae that developed resistance to the insecticidal proteins of B. thuringiensis.抄録全体を表示PDF形式でダウンロード (62K) -
榊原 充隆原稿種別: 原著
専門分野: [not specified]
2003 年 47 巻 2 号 p. 67-72
発行日: 2003年
公開日: 2003/08/25
ジャーナル フリーA series of experiments were conducted to develop a meridic diet for adults of the West Indian sweetpotato weevil, Euscepes postfasciatus, by modifing the diet for larvae of E. postfasciatus developed by Shimoji and Kohama (1996b). Adult weevils were reared at 26°C, 70% RH, under 14L10D photoperiodic conditions. Within the range of KOH doses tested (0–0.107 mol/l), as the KOH dose was increased in the diet, hatchability of the eggs laid increased and longevity of females decreased. The pH of water in the diet did not affect longevity, fecundity and hatchability, even though the diet containing acid water (pH 2.7) resulted in a higher number of hatched offspring than the other diets containing distilled water (pH 6.0), mineral water (pH 9.0) and alkaline water (pH 11.1). Constituents of the tentatively developed diet were 50 g sweetpotato powder, 20 g agar, 20 g sucrose, 12 g casein, 10 g powdered cellulose, 5 g yeast extract, 2.5 g Vanderzant vitamine mixture, 1.5 g Wesson's salts, 2.99 g KOH, 1 g sorbic acid, 1 g methyl paraben, 0.4 g cholesterol, 0.2 g chloramphenicol, and 500 ml acid water.抄録全体を表示PDF形式でダウンロード (64K)
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