Faculty Profiles - TAKAKURA Koichi

Papers - TAKAKURA Koichi

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大阪市万代池公園の動物相

山崎一夫, 高倉耕一

大阪市立環境科学研究所報告調査研究年報 73 75 - 87 2011

Separation of diurnal and seasonal variation from urban ozone monitoring by Bayesian statistics

Yasuyuki Itano, Koh-ichi Takakura

Journal of Japan Society for Atmospheric Environment / Taiki Kankyo Gakkaishi 46 ( 3 ) 179 - 186 2011

Reproductive interference and its implications for the biogeography and ecology of plants

TAKAKURA Koh-Ichi, NISHIDA Sachiko, NISHIDA Takayoshi

bunrui 10 ( 2 ) 151 - 162 2010.8

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：日本植物分類学会

Reproductive interference (RI) refers to negative interspecific interactions in which the reproductive activities of one species directly reduce the reproductive success of another species. RI can be observed in various events in plant reproductive processes, such as stigma clogging and pollen allelopathy. The most conspicuous feature of RI is its positive frequency dependence and its self-reinforcing impact via positive feedback: when two species exert RI on one another, the more abundant species exerts a more intense adverse effect on the reproductive success of the other and then becomes...

DOI： 10.18942/bunrui.KJ00006537116

CiNii Books

If they have no leaves, let them eat bread? : A remarkable food habit in the cotton bollworm Helicoverpa armigera (Hubner) (Lepidoptera, Noctuidae)

YAMAZAKI Kazuo, TAKAKURA Koh-ichi, IMAI Chobei

Transactions of the Lepidopterological Society of Japan 61 ( 2 ) 173 - 175 2010.7

Language：English Publisher：The Lepidopterological Society of Japan

A late-instar larva of the cotton bollworm Helicoverpa armigera (Hubner) was found feeding on bread in a residential home in Osaka. The larva may have inadvertently invaded the house, or earlier the grocery store or bakery, to ultimately feed on the bread. The larva was subsequently reared on the bread in the laboratory, but it died before pupation. This occurrence represents a rare case of the infestation of a processed cereal food by a macrolepidopteran caterpillar and the second report of bread-feeding in the cotton bollworm. Helicoverpa armigera caterpillars typically feed on leaves and...

DOI： 10.18984/lepid.61.2_173

CiNii Books

Alien pollen grains interfere with the reproductive success of native congener

12 ( 6 ) 1617 - 1626 2010.6

Detection and quantitative analysis of human bocavirus associated with respiratory tract infection in Osaka City, Japan

54 ( 5 ) 276 - 281 2010.5

Reproductive interference and salinity tolerance differentiate habitat use between two alien cockleburs: Xanthium occidentale and X. italicum (Compositae)

206 ( 2 ) 309 - 319 2010.2

If they have no leaves, let them eat bread? - A remarkable food habit in the cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera, Noctuidae)

Yamazaki, K, Takakura, K.-I, Imai, C

Transactions of the Lepidopterological Society of Japan 61 ( 2 ) 173 - 175 2010

Procedure and prospects of biodiversity conservation in urban areas

Journal of Urban Living and Health Association 54 ( 2 ) 85 - 92 2010

大阪府におけるオナモミ類の変遷（その２）

藤井伸二, 高倉耕一

Nature Study 56 ( 11 ) 2 - 5 2010

大阪府におけるオナモミ類の変遷（その１）

藤井伸二, 高倉耕一

Nature Study 56 ( 10 ) 6 - 8 2010

Surveillance of Mosquitoes for West Nile Virus in Osaka City from 2005 to 2009

Kaoru GOTOH, Atsushi KAIDA, Hideyuki KUBO, Niichiro ABE, Nobuhiro IRITANI

73 7 - 14 2010

Time-dependent change in symptoms of sick house syndrome and in indoor environment of patient dwellings

Journal of Urban Living and Health Association 54 ( 4 ) 312 - 320 2010

Reproductive interference as a mechanism benefiting the successful invasion of alien species: Case studies with dandelions and cockleburs.

Takakura Koh-ichi

31 ( 2 ) 119 - 135 2009.12

Reconsiderations on Evaluating Methodology of Repellent Effects: Validation of Indices and Statistical Analyses

102 ( 5 ) 1977 - 1984 2009.10

Alien dandelion reduces the seed-set of a native congener through frequency-dependent and one-sided effects

11 ( 4 ) 973 - 981 2009.4

Evolutionary ecology and control of infectious disease virulence

Journal of Urban Living and Health Association 53 ( 3 ) 145 - 152 2009

Optimal-Foraging Predator Favors Commensalistic Batesian Mimicry Reviewed

3 ( 10 ) e3411 2008.10

Temporal change in the density and feeding habits of a terrestrial red mite, Balaustium murorum (Hermann), on a building roof

Koh-ichi Takakura, Ayato Kohzu

JAPANESE JOURNAL OF APPLIED ENTOMOLOGY AND ZOOLOGY 52 ( 2 ) 87 - 93 2008

Language：Japanese Publishing type：Research paper (scientific journal) Publisher：JAPAN SOC APPL ENTOMOL ZOOL

We observed the seasonal occurrence and foraging behaviors of a terrestrial red mite, Balaustium murorum (Hermann), on the roof of a building in Osaka and analyzed the stable isotope ratios in the mite and three prey species to study its feeding habits. On direct observation, the adult mites formed groups and fed on small insects and anthers that had fallen on the roof. When pollen of the grass Polypogon fugax Steud. was experimentally added to the roof surface, the adult mites fed more frequently than they did without the pollen. We measured the stable isotope ratios of C and N in the mite and three prey species, P. fugax, a plant louse (Psyliidae sp.), and a cyanobacterium (Hassallia sp.), and estimated the contribution of each to the mite. This showed that P.fugax made the largest contribution, about 50%, irrespective of the estimation method. From these results, we concluded that the pollen was the most important food resource for the mite, although it is an omnivore.

DOI： 10.1303/jjaez.2008.87

Web of Science

都市の生物相--セミをめぐる研究から

高倉耕一

生活衛生 52 ( 4 ) 239 - 244 2008

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