Search Results - "MAEKAWA, Koji"

Phylogeography of the salmonid fish, Dolly Varden Salvelinus malma: multiple glacial refugia in the North Pacific Rim by Yamamoto, Shoichiro, Maekawa, Koji, Morita, Kentaro, Crane, Penelope A, Oleinik, Alla G

“…The geographic distribution pattern of mitochondrial DNA (control region) sequence polymorphisms from 73 populations of a salmonid fish, Dolly Varden…”
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Decomposed pairwise regression analysis of genetic and geographic distances reveals a metapopulation structure of stream-dwelling Dolly Varden charr by KOIZUMI, ITSURO, YAMAMOTO, SHOICHIRO, MAEKAWA, KOJI

“…Isolation by distance is usually tested by the correlation of genetic and geographic distances separating all pairwise populations’ combinations. However, this…”
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Flexible seaward migration of Dolly Varden Salvelinus malma in the Shiretoko Peninsula, Hokkaido, Japan by Umatani, Yoshiyuki, Arai, Takaomi, Maekawa, Koji

“…The migratory history of Dolly Varden Salvelinus malma was investigated in 30 streams in the Shiretoko Peninsula, Hokkaido, Japan, which is in the southern…”
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Water temperature determines strength of top-down control in a stream food web by KISHI, DAISUKE, MURAKAMI, MASASHI, NAKANO, SHIGERU, MAEKAWA, KOJI

“…Summary 1. We examined effects of water temperature on the community structure of a three trophic level food chain (predatory fish, herbivorous caddisfly…”
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Preface: Micro- and macroevolution of fishes by Nishida, Mutsumi, Maekawa, Koji

“…The front line of current evolutionary studies of fishes is growing quickly. As the front line of research rapidly extends, it is important to have an overview…”
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Synchrony in local population dynamics of stream-dwelling Dolly Varden: do genetically similar groups show similar demography by Koizumi, Itsuro, Yamamoto, Shoichiro, Nomoto, Kazuhiro, Maekawa, Koji

“…We investigated the relationship between genetic divergence and demographic dependence. Genetically related groups may consist of the same demographic unit or…”
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Interpopulation variation in reproductive traits of female masu salmon, Oncorhynchus masou by Tamate, Tsuyoshi, Maekawa, Koji

“…Several life history models predict that larger eggs and lower fecundity should be favored in a low-growth environment. We applied the model of Sibly et al. to…”
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Effect of Habitat Components on Competitive Interaction between Native White-Spotted Charr and Introduced Brown Trout by Hasegawa, Koh, Maekawa, Koji

“…In salmonid species, interspecific competition has been affirmed as the major mechanism of the replacement of native species by introduced species. However,…”
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Genetic evaluation of translocation in artificially isolated populations of white-spotted charr ( Salvelinus leucomaenis) by Yamamoto, Shoichiro, Maekawa, Koji, Tamate, Tsuyoshi, Koizumi, Itsuro, Hasegawa, Koh, Kubota, Hitoshi

“…Genetic population structure of artificially isolated white-spotted charr ( Salvelinus leucomaenis) populations before and after translocation were examined…”
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Seasonal migration patterns of female sika deer in eastern Hokkaido, Japan by IGOTA, Hiromasa, SAKURAGI, Mayumi, UNO, Hiroyuki, KAJI, Koichi, KANEKO, Masami, AKAMATSU, Rika, MAEKAWA, Koji

“…Fifty‐seven female sika deer (Cervus nippon yesoensis), captured at the wintering area in the Shiranuka Hills in eastern Hokkaido, Japan, were radio‐tracked…”
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Phylogeography of white-spotted Charr (Salvelinus leucomaenis) inferred from mitochondrial DNA sequences by Yamamoto, Shoichiro, Morita, Kentaro, Kitano, Satoshi, Watanabe, Katsutoshi, Koizumi, Itsuro, Maekawa, Koji, Takamura, Kenji

“…The white-spotted charr (Salvelinus leucomaenis) is a coldwater-adapted fish distributed in far-eastern Asia. To assess phylogeographic patterns of this…”
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Effects of acorn masting on population dynamics of three forest-dwelling rodent species in Hokkaido, Japan by Saitoh, Takashi, Osawa, Jun, Takanishi, Toshikazu, Hayakashi, Shintaro, Ohmori, Masaaki, Morita, Toshio, Uemura, Shigeru, Vik, Jon Olav, Stenseth, Nils Chr, Maekawa, Koji

“…The effects of the abundance of acorns of the oak, Quercus crispula, on the population dynamics of three rodent species (Apodemus speciosus, A. argenteus, and…”
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Comparison of competitive ability between native and introduced salmonids: Evidence from pairwise contests by Hasegawa, K. (Hokkaido Univ., Sapporo (Japan)), Yamamoto, T, Murakami, M, Maekawa, K

“…Brown trout. Salmo trutta, and rainbow trout, Oncorhynchus mykiss, have been introduced to freshwaters in Hokkaido, Japan. Today, it is recognized that these…”
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Effects of acorn abundance on density dependence in a Japanese wood mouse (Apodemus speciosus) population by Saitoh, Takashi, Vik, Jon Olav, Stenseth, Nils Chr, Takanishi, Toshikazu, Hayakashi, Shintaro, Ishida, Nobuo, Ohmori, Masaaki, Morita, Toshio, Uemura, Shigeru, Kadomatsu, Masahiko, Osawa, Jun, Maekawa, Koji

“…We analysed the effects of Quercus crispula acorn abundance on the density dependence of the large Japanese wood mouse Apodemus speciosus using time series…”
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LATITUDINAL VARIATION IN SEXUAL SIZE DIMORPHISM OF SEA-RUN MASU SALMON, ONCORHYNCHUS MASOU by Tamate, Tsuyoshi, Maekawa, Koji

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Spawning Migration of Stream-Dwelling Dolly Varden in Spring-Fed Tributaries of the Shiisorapuchi River, Japan by Koizumi, Itsuro, Maekawa, Koji

“…During the breeding seasons of 1998-2001, the spawning migration of stream-dwelling Dolly Varden (Salvelinus malma) was investigated in four small spring-fed…”
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Skewed reproductive success among male white‐spotted charr land‐locked by an erosion control dam: Implications for effective population size by Maekawa, Koji, Koseki, Yusuke, Iguchi, Kei'ichiro, Kitano, Satoshi

“…In 1996 and 1997, the spawning behavior of fluvial white‐spotted charr Salvelinus leucomaenis, was observed in the upstream area of an erosion control dam. A…”
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Does the refuge availability influence the spawning behavior of mature male parr in salmonids? A test in the Miyabe charr by KOSEKI, Yusuke, KOIZUMI, Itsuro, KOBAYASHI, Haruki, MAEKAWA, Koji

“…In many salmon and charr, both 'migratory males' and 'precocious males' are maintained as alternative life-histories within a population. During breeding,…”
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Long‐term observation of fish community in streams inside and outside road construction of Teshio River system, northern Hokkaido, Japan by Umatani, Yoshiyuki, Okuda, Atsushi, Fujito, Eishi, Yoshida, Toshiya, Satoh, Fuyuki, Maekawa, Koji, Nakamura, Masahiro

“…Nakagawa experimental forest of Hokkaido University is located in the middle Teshio River and some tributaries flow through the forest. The construction of…”
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Speaker apparatus to be mounted on a vehicle by Maekawa, Koji

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