巻号一覧
48 巻 (2004)
- 4 号 p. 261-
- 3 号 p. 169-
- 2 号 p. 79-
- 1 号 p. 1-
48 巻, 3 号
選択された号の論文の10件中1～10を表示しています
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総説
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塩尻 かおり2004 年 48 巻 3 号 p. 169-176
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーPDF形式でダウンロード (1070K)
原著
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井上 栄明, 上和田 秀美, 深町 三朗2004 年 48 巻 3 号 p. 177-183
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーSeasonal changes in adult densities and female mating frequencies of the rice leafroller, Cnaphalocrocis medinalis were observed from 1988 to 1992 in the rice fields of Southern Kyushu, Japan. The ratios of mated females in field populations were high at 75–100% in late June and early July, when adult immigrants invade fields probably from China. In late July and early August, the ratios suddenly dropped to below 50% simultaneously with a rapid rise in adult population density of the first generation. Thereafter, the ratios fluctuated from 25–75%. These seasonal changes were different from the previous report obtained in Northern Kyushu. Based on these results, possible migration of adults within the local habitats and further northward is discussed.抄録全体を表示PDF形式でダウンロード (450K) -
宮島 淳二2004 年 48 巻 3 号 p. 185-189
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーTo determine more accurate emergence patterns of the cypress bark moth Epinotia granitalis Butler, pupal exuviae left on the tree trunks of the Japanese Cedar Cryptomeria japonica D. Don were directly counted daily in the field. The emergence patterns were compared with the daily number of E. granitalis adults caught at a light trap in order to examine whether the light trap data reflects the emergence patterns of the moth in the field. The actual emergence in the field and light trap catches started almost simultaneously, although a few adults were trapped after the end of the actual emergence and the 50% light trap catches appeared several days later than the 50% emergence date. Therefore, the light trapping method can be used to determine the beginning of E. granitalis emergence. When the trapping data are approximated to a theoretical distribution pattern, then the 50% emergence date can be forecasted with date from two or three trappings at the beginning of emergence. This allows for the determination of an appropriate date for control of the adult moths in the field.抄録全体を表示PDF形式でダウンロード (465K) -
田村 泰盛, 服部 誠, 今野 浩太郎, 本田 洋, 河野 義明2004 年 48 巻 3 号 p. 191-199
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーThe leaf beetle Ophraella communa is an oligophagous insect that infests several asteraceous plants, especially ragweed Ambrosia artemisiifolia, in fields of Japan. The feeding responses of O. communa to methanolic extracts of 11 genera and 17 species of asteraceous plants were examined to determine whether feeding preference depended on chemicals in the plants. The methanolic extracts of 8 asteraceous species stimulated feeding in O. communa, but the other 9 species showed no activity. Two triterpenoids (α-amyrin acetate and β-amyrin acetate) and two caffeic acid derivatives (chlorogenic acid and 3,5-dicaffeoylquinic acid) are known as feeding stimulants for O. communa. The distribution of these compounds was analyzed in 17 asteraceous species. These compounds were found in many species, including nonhost plants of this beetle, however amounts and compositions differed. Even when the methanolic extracts of A. artemisiifolia were added to extracts of some species which did not elicit feeding of O. communa, the feeding of O. communa was not induced by the inactive plants. Feeding deterrents as well as feeding stimulants in the leaves of asteraceous plants appear to determine the feeding preference of O. communa.抄録全体を表示PDF形式でダウンロード (581K) -
南島 誠, 荒川 昭弘, 岡崎 一博, 望月 文昭, 福本 毅彦2004 年 48 巻 3 号 p. 201-205
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーAn easy method for estimating the efficacy of mating disruption was designed for the Oriental fruit moth, Grapholita molesta because this moth is too small to prepare tethered females and the estimation of the efficacy of mating disruption is rather important when the field population is low. Four virgin females were confined together with six males in a globular net cage (mating cage, about 21 cm dia.) made by combining two sieve baskets of stainless steel commercially available at a low price. The mating cages were placed overnight in pear orchards treated and untreated with synthetic sex pheromone. On the following morning, the females were dissected to examine the spermatophore in the abdomen. Mating rates were significantly reduced in the pheromone treated orchards as compared to in the untreated orchards. More than five cages (20 females) were necessary to evaluate the mating rate in a single orchard. Merits of this method are considered that can be applied to small moths such as G. molesta and the mating rate is not influenced by the wild population density.抄録全体を表示PDF形式でダウンロード (430K) -
芦原 亘2004 年 48 巻 3 号 p. 207-211
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーDiaphorina citri adults collected from Ishigaki Island (southern Ryukyus), Okinawa Island (central Ryukyus) and Amami Island (northern Ryukyus) were reared on Citrus unshiu and Murraya paniculata leaves under the late autumn to spring temperature conditions of 3 areas of Kyushu (south to north: Makurazaki, Akune, Kuchinotsu) located north of their natural habitat. About 60% of adults of Ishigaki population survived until late April at Makurazaki temperatures, at which time the survival rates of Okinawa and Amami populations had decreased below 14%. At temperatures in Akune, 35% of the Ishigaki population on M. paniculata and 10% on C. unshiu survived until late April, but the Okinawa and Amami populations died out before March. Under the conditions at Kuchinotsu with a minimum temperature of −3.3°C, only 4% of the Ishigaki population survived on M. paniculata and 6% on C. unshiu. Ishigaki adults reared on M. paniculata and Citrus limon trees at Makurazaki temperatures oviposited and progeny developed to the nymphal stage by the end of April. These results suggest that winter temperature conditions in parts of Kyushu are not destructive factors for D. citri populations.抄録全体を表示PDF形式でダウンロード (337K) -
後藤 弘, 足立 礎2004 年 48 巻 3 号 p. 213-218
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーTrissolcus plautiae is a solitary and dominant parasitoid of the brown-winged green bug, Plautia crossota stali. The development of immature stages of T. plautiae in the eggs of P. crossota stali at 25°C, 16L–8D and 50±10% RH was investigated. T. plautiae was comfirmed to have three larval instars, and the mandibles were the characteristic of the 1st-instar larvae. The developmental period in males and females was estimated at 16.4 (in hours) and 16.3 in eggs, 40.0 and 39.4 in the 1st instars, 15.8 and 18.5 in the 2nd instars, 48.1 and 57.3 in the 3rd instars, 16.9 and 20.8 in prepupae, and 118.6 and 152.1 in pupae, respectively. The volume of parasitoid eggs reached their maximum 18 h after oviposition, just before hatching. The body length of larvae increased till the end of the 2nd instar, and decreased slightly in the 3rd instar. The egg volume and the body length were not significantly different between males and females of T. plautiae. Adult males first emerged 264 h after oviposition, and females emerged 48 h later than males.抄録全体を表示PDF形式でダウンロード (546K) -
後藤 純子, 樋口 博也2004 年 48 巻 3 号 p. 219-224
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーEffects of aging and copulation on the flight ability of the rice leaf bug, Trigonotylus caelestialium (Kirkaldy), were investigated by a tethered flight technique. Three day old unmated females showed the longest total flight duration per 1 h. A high flight activity in 3 day old females appears to be closely related to mating behavior. There was little difference in the flight activity of unmated males at all ages. The flight activity in 5 day old females was similar to 5 day old unmated females. Therefore, mating status does not appear to affect the flight activity of females. We conclude that the flight activity of adult bugs is low and they repeat short flights in their habitats and among the host plants in the field.抄録全体を表示PDF形式でダウンロード (353K)
短報
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桝本 雅身, 岡島 秀治2004 年 48 巻 3 号 p. 225-226
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーFrankliniella cephalica (Crawford), a neotropic species, is newly recorded from flowers of Bidens pilosa L. and Ipomoea batatas (L.) in Ryukyu Is., Southwest Japan. Previously, only four species of the genus Frankliniella Karny have been reported in Japan. F. cephalica can be easily distinguished from other members of this genus in Japan by an antennal segment II produced dorsally with two stout setae and a pedicel of segment III with a pronounced sharp-edged subbasal ring.抄録全体を表示PDF形式でダウンロード (179K) -
野田 隆志, 中村 暁子2004 年 48 巻 3 号 p. 226-229
発行日: 2004年
公開日: 2004/11/30
ジャーナル フリーWe investigated the effects of adult body size of Oomyzus sokolowskii (Kurdjumov) (Hymenoptera: Eulophidae) on longevity and lifetime fecundity. A positive significant correlation was observed between female body size and the longevity of females that had not oviposited when fed honey, but no significant correlation was found between male size and longevity. The females that oviposited lived a much shorter time than females that did not oviposit, and no significant correlation was found between body size and longevity. There was no significant correlation between female size and lifetime fecundity (=the total number of eggs produced). The parasitoid size in both females and males was significantly influenced by the size of host larvae from which they emerged.抄録全体を表示PDF形式でダウンロード (234K)
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