著者

Hirotaka Kobayashi Akiomi Yamane Ryûtarô Iwata

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.38, no.1, pp.141-148, 2003 (Released:2003-05-25)

参考文献数

14

被引用文献数

15 19

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We observed the mating behavior of Monochamus saltuarius (Cerambycidae: Lamiinae) and confirmed the following behavioral actions. The male reacted to the female with his antennae or tarsi, the male dashed to the female and mounted her back. Copulation consisted of three phases: First, while bending at the abdomen, the male inserted his penis into the female's genitalia, second, the male is motionless with the females genitalia being pulled out from her abdomen by the males penis, outside of both body cavities, finally, the male tries to pull out his penis from the female genitalia. The copulation was shown to take place mostly for one and a half minutes, with a significant tendency to be slightly shortened as the pair progressed from the first through the third copulation. The violent fight between two males took place in the presence of a female and sometimes she changed her mate. The male did not differentiate between dead and live females, because the male mounted dead females as same as live them.

著者

Haruo Kinuura Masahide Kobayashi

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.41, no.1, pp.123-128, 2006 (Released:2006-04-10)

参考文献数

18

被引用文献数

51 59

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Adult Platypus quercivorus beetles were artificially inoculated into Japanese oak trees (Quercus crispula). Two inoculation methods were used: uniform inoculation through pipette tips, and random inoculation by release into netting. Four of the five trees that were inoculated uniformly died, as did all five trees that were inoculated at random. Seven of the nine dead trees showed the same wilting symptoms seen in the current mass mortality of oak trees. Raffaelea quercivora, which has been confirmed to be the pathogenic fungus that causes wilt disease and is usually isolated from the mycangia of P. quercivorus, was isolated from all of the inoculated dying trees. Trees that died faster showed a higher density of beetle galleries that succeeded in producing offspring. We found positive relationships between the density of beetle galleries that succeeded in producing offspring and the rate of discoloration in the sapwood and the isolation rate of R. quercivora. Therefore, we clearly demonstrated that P. quercivorus is a vector of R. quercivora, and that the mass mortality of Japanese oak trees is caused by mass attacks of P. quercivorus.

著者

Chikara Ishijima Takashi Motobayashi Madoka Nakai Yasuhisa Kunimi

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.39, no.1, pp.155-162, 2004 (Released:2004-05-25)

参考文献数

29

被引用文献数

11 17

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We investigated the effects of tillage practices on the densities of wolf spiders and planthoppers and leafhoppers in rice paddy fields. Paddies were subjected to one of two different treatments (no tillage and conventional tillage), and seasonal changes in the densities of wolf spiders and hoppers were investigated over two growing seasons (1999 and 2000). In both years, the density of wolf spiders was significantly higher and the density of hoppers tended to be lower in no-tilled paddies than in conventionally tilled paddies, although the latter difference was not statistically significant. The Iwao's omega values, which represent the degree of correlation between the spatial distributions of wolf spiders and hoppers, were higher in no-tilled than in tilled paddies during August when the hopper density decreased in no-tilled paddies.

著者

Takashi Motobayashi Chikara Ishijima Motonori Takagi Mihoko Murakami Ayame Taguchi Kazumasa Hidaka Yasuhisa Kunimi

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.41, no.2, pp.371-381, 2006 (Released:2006-06-06)

参考文献数

40

被引用文献数

11 11

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To examine the effects of tillage practices on spider assemblages in rice paddy fields, we investigated the abundance and biomass of spiders in untilled and tilled paddy fields over three cropping seasons (from 1999 to 2001). In total, we collected 6,829 spiders, consisting of 13 species in seven families. The family Lycosidae was the most abundant, followed by Tetragnathidae, Linyphiidae, and Salticidae. Spider abundance and biomass were greater in untilled than in tilled paddies during each cropping season. Although we detected no significant effect of tillage on spider abundance, we did observe a significant effect of tillage on spider biomass in 2000 and 2001. No differences were found in the abundance and biomass of tetragnathid and linyphiid spiders during the cropping season. In contrast, the abundance and biomass of lycosid or salticid spiders tended to be larger in untilled paddies than in tilled paddies, especially later in the cropping season.

著者

水谷 信夫 守屋 成一 山口 卓宏 伊藤 健二 田渕 研 角田 隆 岩井 秀樹

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

日本応用動物昆虫学会誌 (ISSN:00214914)

巻号頁・発行日

vol.55, no.3, pp.163-170, 2011

被引用文献数

15

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マメ科植物を寄主とするホソヘリカメムシのレンゲ,アカクローバ,ダイズでの発生消長を調査し,周年の発生生態を明らかにした.レンゲでは,4月下旬以降成虫が認められ,幼虫の発生は5月中旬~6月中旬から認められた.レンゲにおける成・幼虫の密度は,年次および場所間で大きく異なった.アカクローバでは,成虫の飛来時期が年次によって異なり,5月下旬~7月上旬から成虫が認められた.幼虫の発生は6月下旬~7月上旬から認められ,その後8月下旬~10月中旬まで成・幼虫が認められた.ダイズでは成・幼虫の発生量の年次間差は小さく,7月下旬~8月上旬に成虫に引き続いて幼虫が確認された.その後,幼虫が10月中旬まで,成虫が11月中旬まで認められた.各々の植物上で幼虫および次世代成虫の発生が認められたことから,ホソヘリカメムシは,レンゲ,アカクローバ,ダイズを寄主植物として順次利用することにより,周年の生活史を完結することができると考えられた.

著者

Seiji Tanaka Koutaro Maeno Sid'Ahmed Ould Mohamed Sidi Ould Ely Mohamed Abdallahi Babah Ebbe

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.45, no.4, pp.641-652, 2010-11-25 (Released:2010-11-30)

参考文献数

48

被引用文献数

13 16

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A short excursion was made to the western part of Mauritania to investigate increasing populations of the desert locust, Schistocerca gregaria, in October 2009. The size of locust populations observed ranged from <1 to >20 individuals per 25 m2. Adults from low- and high-density populations were similar in morphometric ratios of F/C and E/F (F, hind femur length; C, maximum head width; E, fore wing length) and the ratios were similar to those reported for solitarious forms. However, locusts from high-density populations were mostly yellow, while those from low-density populations were brown or whitish. The former were observed ovipositing in groups. These observations, together with the fact that some of the females from high-density populations had ovarian eggs significantly larger than those found in females from low-density populations, suggested that gregarization might have occurred after adult emergence. Aggregations of nymphs were observed at many sites, and nymphs with black patterns typically observed in transient and gregarious populations were found together with those with solitarious body coloration, i.e. green or brown. A prompt action of locust control by National Locust Control Center was likely to have contributed to prevent further upsurges in the locust populations in the following seasons.

著者

Jun-ichi Takahashi Shin-ichi Akimoto Eisuke Hasegawa Jun Nakamura

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.37, no.3, pp.481-486, 2002 (Released:2003-04-25)

参考文献数

29

被引用文献数

12 14

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Vespa ducalis is a monogynous hornet with an annual life cycle. Its colonies are the smallest in the genus Vespa. Generally, it is thought that the number of queen matings and colony size are positively correlated, so we analyzed the queen mating number and genetic relatedness between workers of V. ducalis using microsatellite DNA markers. We examined foundress queens and 20 workers from each of 20 colonies. All colonies were found to have one queen inseminated by one male. The genetic relatedness between workers was 0.724±0.0029 (mean±SE), which is not significantly different from the expected value of 0.75 for full sisters. This result suggests a possible conflict in male production between queens and workers based on kin selection prediction. Therefore, we performed microsatellite analysis of 400 males from 20 colonies to verify whether males are derived from either queens or from workers. No males could be assigned to workers developed ovaries were not found in a total of 880 mature workers. These results strongly suggest that queens dominate production of males in V. ducalis colonies.

著者

Katsuyuki KOHNO Yoshimi HIROSE

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.32, no.2, pp.406-409, 1997-05-25 (Released:2008-02-07)

参考文献数

11

被引用文献数

3 7

著者

Yoshio TAMAKI Hiroshi NOGUCHI Takeshi YUSHIMA Chisato HIRANO

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.6, no.3, pp.139-141, 1971-09-25 (Released:2008-02-07)

参考文献数

12

被引用文献数

33 79

著者

Jun MITSUHASHI Hajime INOUE

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.23, no.4, pp.488-490, 1988-11-25 (Released:2008-02-07)

参考文献数

7

被引用文献数

30 79

著者

Shohko OBATA

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.22, no.4, pp.434-442, 1987-11-25 (Released:2008-02-07)

参考文献数

12

被引用文献数

6 51

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The behavior of male Harmonia axyridis prior to and during copulation was studied.First, in order to investigate mate recognition by males, several kinds of models were presented to males and their response was observed. It was inferred that visual factors such as body size and shape were involved in mate recognition by males in a close idstance. Some chemical factor was suggested to be the main factor to release male copulatory behavior. Second, "body shaking", a characteristic behavior of a male during copulation, was analyzed in detail. This behavior was regular and rigid, and such characteristics suggested the direct control by the nervous system. By the experimental interruption of copulation, it was confirmed that body shaking was the process of sperm transfer. The mode of sperm transfer by spermatophore formation was also clarified.

著者

Etsuko Shoda Kôhei Kubota Hiroshi Makihara

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.38, no.3, pp.339-345, 2003 (Released:2003-11-25)

参考文献数

35

被引用文献数

6 12

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The sugi bark borer, Semanotus japonicus, occurs naturally in Honshu, Shikoku, Sado Is., Oki Is., and Yaku Is. in Japan, and its main host tree is the Japanese cedar, Cryptomeria japonica. Because the geographical structure of the morphological characters largely corresponds to the sites of the glacial refugia and the post-Pleistocene dispersal route of the Japanese cedar, the history of the cedar was postulated to have shaped the genetic population structure in the borer. In this study, we used partial sequences from mitochondrial DNA genes, the COI, tRNALeu-UUR and COII to elucidate processes in the geographical structuring of S. japonicus populations. Ten haplotypes were revealed among 52 individuals from four populations that ranged from Iwate to Ehime prefectures. The geographical distribution of these haplotypes was highly structured. Two distinct lineages were detected, which probably represented the Pacific coastal and the Japan Sea side lineages, from the neighbour-joining method and haplotype networking. As haplotypes of both Pacific and Japan Sea lineages were found in the Iwate population, a second contact might have occurred in the Tohoku area. These results suggested that the present genetic structure of S. japonicus was determined by the host's past history.

著者

Masami HAYASHI Tadatora OKADA

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.29, no.2, pp.267-271, 1994-05-25 (Released:2008-02-07)

参考文献数

7

被引用文献数

1 2

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A new typhlocybine species belonging to a new genus, Alebrasca actinidiae is described and illustrated, on the basis of the material collected from Odawara, Kanagawa Pref., central Honshu. The genus is defined by certain morphological characters of head, wing venation, ♂ genitalia, etc. It is notable that this leafhopper lives exclusively on Kiwi-fruit.

著者

中石 一英 福井 康弘 荒川 良

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

日本応用動物昆虫学会誌 (ISSN:00214914)

巻号頁・発行日

vol.55, no.4, pp.199-205, 2011

被引用文献数

31 1

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野外の餌動物がほとんど発生していないゴマにタバコカスミカメが大発生し世代交代することが観察されたことから,本種はゴマで増殖が可能と推測された.そこで,ゴマでタバコカスミカメは増殖が可能であるか否かを知るとともに,キュウリ,ナス,トマトおよびピーマンでの増殖についても検討した.餌にゴマ,キュウリ,ナス,トマトまたはピーマンの葉を与えた区,それとゴマの葉とともにスジコナマダラメイガ解凍卵を与えた区を設け,タバコカスミカメを飼育し,繁殖能力を比較した.タバコカスミカメの卵から成虫までの生存率はゴマでは59.3%あり,ゴマとともにスジコナマダラメイガ解凍卵を与えても生存率は有意に高まらなかった.このゴマでの生存率はキュウリを与えた場合と有意差はなかったが,ナスより有意に高かった.また,トマトおよびピーマンでは成虫まで発育した個体は見られなかった.卵から成虫までの発育日数はゴマでは29.0日と,キュウリおよびナスに比較して有意に短かったが,ゴマとともにスジコナマダラメイガ解凍卵を与えると有意に短縮した.成虫の生存日数はゴマで雌が38.4日,雄が27.7日であり,ゴマとともにスジコナマダラメイガ解凍卵を与えても有意差は認められず,ゴマでの生存日数は他の植物と比較して有意に長かった.1雌当たり総産卵数はゴマでは63.6卵であったが,ゴマとともにスジコナマダラメイガ解凍卵を与えると166.4卵と有意に増加した.ゴマ以外の植物での1雌当たり総産卵数は4卵以下で,ゴマと比較して有意に少なかった.ゴマだけを与えた飼育から求めた日当たり内的自然増加率および30日当たり増殖倍率は,それぞれ0.0465および4.0であり,ゴマとスジコナマダラメイガ解凍卵を与えて得た0.0865および13.4に比較して小さかった.しかし,ゴマでは動物質の餌がなくてもタバコカスミカメは増殖できることが明らかになったことから,ゴマはタバコカスミカメのインセクタリープランツとして利用できる可能性が示された.

著者

Abe Junichiro Ganaha-Kikumura Tomoko Yukawa Junichi

出版者

Japanese Society of Applied Entomology and Zoology

雑誌

Applied entomology and zoology (ISSN:00036862)

巻号頁・発行日

vol.46, no.2, pp.271-279, 2011-05

著者

今井 利宏 笠石 義広 原田 晴康 高橋 竜太 倉持 恵子

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

日本応用動物昆虫学会誌 (ISSN:00214914)

巻号頁・発行日

vol.55, no.2, pp.65-67, 2011

被引用文献数

2

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Herbivory by the death's head hawkmoth, <i>Acherontia lachesis</i> (F.) (Lepidoptera: Sphingidae), on tobacco was recorded in Oyama, Tochigi Prefecture. The larvae attacked leaves in the lower to middle portion of the plants. They consumed a large area of leaf except the mid-rib. Typically, one larva consumed several leaves from a few adjacent plants. Observation in a 570 m² tobacco field (1,110 plants; var. Tsukuba 1), where no pesticides had been applied since transplanting, revealed that 80 plants (7.2%) were injured by final instar larvae of this species. The overall decrease in yield is estimated to be less than 1% by defoliation due to this pest.

著者

Masasuke Ryuda Hisayuki Nakayama Yoichi Hayakawa

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.43, no.4, pp.563-568, 2008-11-25 (Released:2008-11-30)

参考文献数

24

被引用文献数

5 6

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We investigated the inheritance of cannibalistic behavior in larvae of the common cutworm, Spodoptera litura. The fact that artificial selection of non-cannibalistic animals over 17 generations resulted in decrease of their cannibalistic behavior is clearly the proof of their inheritance of this behavior. Average frequency of cannibalism in selected larvae (3.2%) was significantly lower than that in non-selected larvae (24.5%). We employed the differential display RT-PCR analysis to evaluate differences in gene expression in the brains between selected and non-selected lines, and identified one gene whose expression was significantly higher in non-selected line larvae than that in selected line larvae. The identified gene with 779 bp was a novel gene without a major sequence homology with any reported genes. This gene was expressed in several tissues, fat body, brain, and hemocytes, among which the highest expression was observed in the brain. Further, the expression of this gene was very low in the brain of normally fed larvae but starvation significantly enhanced its expression only in the non-selected larvae. These results imply the possibility that the gene identified in the present study contributes to initiating cannibalistic behavior of S. litura larvae although the detailed function of this gene is unknown at present.

著者

Masahiko Watanabe Yoshio Hirai

出版者

JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY

雑誌

Applied Entomology and Zoology (ISSN:00036862)

巻号頁・発行日

vol.39, no.2, pp.249-254, 2004 (Released:2004-08-25)

参考文献数

14

被引用文献数

12 22

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Host-use pattern for overwintering and reproduction of the ragweed beetle, Ophraella communa LeSage, was examined in Tsukuba, Japan. Many adults of both sexes were found overwintering inside the rolled parts of dead leaves of Xanthium canadense in November. These adults had already accumulated triacylglycerol as energy reserves, and were able to survive the winter and to reproduce in the spring. No eggs and larvae were found on X. canadense throughout the observation period, although overwintered adults were temporarily found in May. In contrast, reproduction occurs on Ambrosia artemisiifolia and A. trifida in late April. These results suggest that O. communa adults mainly use dead leaves of X. canadense as an overwintering shelter in Tsukuba, while they reproduce only on A. artemisiifolia and A. trifida in the spring. Such a seasonal migration between host plants may be important for the survival strategy.