Effects of preventing a temperature decrease during winter on reproduction of male small-egged Kajika, Cottus pollux SE
Yasunori Koya; Ryoji Fujii; Daisuke Tahara; Hidenobu Yambe; Takaharu Natsumeda, Last, To investigate the effects of preventing temperature decrease on the reproductive activity of the male cold-water teleost, Cottus pollux SE, testicular development, serum 11-ketotestosterone (11-KT) levels, and physiological responses associated with nesting behavior (i.e., elevation of serum 11-KT levels and accumulation of urine in the urinary bladder) were observed from November to January. Specifically, males were exposed to three different cooling regimes (control, 16 to 6 °C; H1, 16 to 11 °C; H2, 16 to 14 °C), and the results were compared. In addition, the effects of temperature on male reproductive behavior were also clarified. At higher water temperature regimes, the rate of testicular development and serum 11-KT levels were both higher from November to mid-December than from mid-December to January. However, the results showed that high water temperature regimes in the coldest period of winter did not suppress spermatogenesis completely. Conversely, the physiological responses to nesting were affected by high water temperatures, with serum 11-KT levels increasing and urine accumulation in the urinary bladder being suppressed. Furthermore, frequencies of two behaviors associated with nesting, i.e., body undulation and face displays, were also suppressed under high water temperatures (~ 14 °C) compared with normal temperatures (~ 7 °C) during the breeding season. Based on the physiological and behavioral responses to nesting, findings showed that preventing a water temperature decrease during winter suppresses reproductive activity in Cottus pollux SE., Springer
Fish Physiology and Biochemistry, Aug. 2020, [Reviewed]

Habitat-specific effects of interstitial space between stream substrate particles on the colonization of aquatic organisms
Natsumeda T & Iguchi K, Lead, Springer
International Aquatic Research, Dec. 2019, [Reviewed]

外来魚が侵入した千葉県北東部の池における淡水性カメ類と水生生物の生息状況
棗田孝晴; 田中 潤; 田中芳彦, Lead, 公益財団法人 宮城県伊豆沼・内沼環境保全財団
伊豆沼・内沼研究報告, Sep. 2019, [Reviewed]

奄美大島を流れる役勝川における付着藻類生産力の流程変化　　　　　　　　　　　　　　　
阿部信一郎; 棗田孝晴; 黒田 暁; 堀江哲也; 井口恵一朗, 日本藻類学会
藻類, Jul. 2018, [Reviewed]

河川工作物による環境改変が淡水魚類群集に及ぼす影響　　　　　　　　　　　　　　　
用田悠介; 鹿野雄一; 阿部信一郎; 井口恵一朗; 棗田孝晴, Corresponding, 応用生態工学会
応用生態工学, Jul. 2018, [Reviewed]

Distinct foraging modes between two stream-dwelling benthic fishes, torrent catfish Liobagrus reini and Japanese fluvial sculpin Cottus pollux (large-egg type)
Takaharu Natsumeda; Hiromu Ogawa; Osamu Katano, Lead, We observed feeding behavior, movement, focal point utilization, and diet of two stream-dwelling benthic fishes, torrent catfish Liobagrus reini and Japanese fluvial sculpin Cottus pollux (large-egg type), under experimental conditions. Torrent catfish are benthos feeders, cruise widely, and prey exclusively on chironomid and trichopteran larvae. Japanese fluvial sculpin are drift and benthos feeders, ambush prey, and select for ephemeropteran nymphs in addition to chironomid and trichopteran larvae. The different foraging modes of these two species might enable their sympatric distribution when their diets overlap., SPRINGER JAPAN KK
ICHTHYOLOGICAL RESEARCH, Jul. 2016, [Reviewed]

Differing wariness for approaching humans among cormorant migrants advancing into rural or urban habitats
Iguchi K; Hideki Tanaka H; Shinagawa T; Tsuruta T; Natsumeda T; Konish K; Abe S, Canadian Center of Science and Education
Journal of Agricultural Science, Oct. 2015

Environmental and biotic characteristics to discriminate farm ponds with and without exotic largemouth bass and bluegill in western Japan
Takaharu Natsumeda; Noriko Takamura; Megumi Nakagawa; Yasuro Kadono; Tetsuo Tanaka; Hiromune Mitsuhashi, Lead, We compared the environmental and biotic characteristics of farm ponds with and without the invasive fish, largemouth bass (Micropterus salmoides), and bluegill (Lepomis macrochirus), with varying degrees of aquatic vegetation cover in western Japan. Redundancy analysis (RDA) revealed that aquatic vegetation cover and pond area were significant environmental variables in explaining the variance in aquatic organisms. Aquatic vegetation cover predominantly affected Odonata and Hemiptera larvae, and the native cyprinid, Hemigrammocypris rasborella, while the pond area mainly affected the two exotic fishes (largemouth bass and bluegill), Viviparidae, Oligocheata, Ephemeroptera, and chironomid larvae. In the RDA biplot for aquatic organisms, the RDA1 axis appeared to separate the exotic fish group (bluegill, largemouth bass, Gammaridae, Oligochaeta, Viviparidae, Ephemeroptera, Trichoptera, and chironomid larvae) from the native fish group (H. rasborella, Oryzias latipes, Rhinogobius sp., Odonata, shrimps, and Hemiptera larvae). The best path model results indicated that the presence of piscivorous largemouth bass had a significantly negative effect on native fish numbers; largemouth bass also had a positive indirect effect on benthic organism numbers. Our data suggest that the depletion of native fishes via top-down effects by exotic largemouth bass may indirectly increase the number of benthic organisms as a result of trophic-cascading effects., SPRINGER JAPAN KK
Limnology, Aug. 2015, [Reviewed]

Immigration of the common cormorant Phalacrocorax carbo hanedae into inland areas of the northern part of Nagano Prefecture, eastern Japan, inferred from stable isotopes of carbon, nitrogen and sulphur
Takaharu Natsumeda; Hiroyuki Sakano; Tetsuya Tsuruta; Kayoko Kameda; Kei'ichiro Iguchi, Lead, Immigration of common cormorants Phalacrocorax carbo hanedae into inland areas might result in substantial loss of inland fish stocks due to predation. We estimated the immigration and habitat of piscivorous common cormorants into inland areas using 3 stable isotope values (delta C-13, delta N-15 and delta S-34) collected from 24 cormorant specimens and 9 grey heron (Ardea cinerea) specimens for comparison; Samples were collected (shot) during the winter and spring of 2007-2008 in the northern part of Nagano Prefecture, an inland area of eastern Japan. Variation in carbon and nitrogen isotope values between cormorant individuals was low in the liver and in the pectoralis major muscle, with a rapid rate of turnover. Relatively higher variation in the primary and secondary feathers, the values of which reflect a moulting period, suggest inter-individual variation in habitat use and prey items during and after summer moulting. Predicted mean isotope values of cormorant prey, calculated from fractionation values of the primary feathers, did not support littoral feeding of the cormorants after moulting. Based on empirical measurement of delta S-34 thresholds, with > 10 aEuro degrees being indicative of tissue grown in a marine environment, the percentage of individuals feeding in seawater- dominated areas after moulting was only 16.7 % in cormorants and 0 % in grey herons, suggesting the majority of cormorants examined inhabited inland areas and preyed upon inland fish stock after summer moulting., SPRINGER JAPAN KK
Fisheries Science, Jan. 2015, [Reviewed]

モツゴ Pseudorasbora parva を対象としたモンドリの最適設置時間の検討　　　　　　　　　　　　　　　
棗田孝晴; 井口恵一朗, Lead, 公益社団法人日本水産学会
日本水産学会誌, Jul. 2014, [Reviewed]

Variation in morphological characteristics of Japanese fluvial sculpin related to different environmental conditions in a single river system in eastern Japan
Takaharu Natsumeda; Tetsuya Tsuruta; Hirohiko Takeshima; Satoshi Awata; Kei'ichiro Iguchi, Lead, Stream fish with low mobility are often restricted to a narrow range of a stream course, and their morphological characters tend to be affected substantially by the environmental conditions of their habitat. We examined the relationships between environmental conditions and morphological characters of Japanese fluvial sculpin (Cottus pollux), a small, benthic fish with low mobility, at seven tributaries of the same river system in eastern Japan. Discriminant function analysis (DFA) indicated significant morphological differences in sculpins amongst the seven tributaries, and over 80% of individuals were classified correctly in each tributary.The strong positive correlation/loadings on the first discriminant function (DF1: 49.9% of total variation) were anterior caudal peduncle depth (0.436) and caudal peduncle truss (0.387), both of which could be regarded as an attribute of caudal peduncle depth. The second discriminant function (DF2: 16.5% of total variation) had a high negative loading for distance between the posterior first dorsal fin and anterior anal fin (-0.454), which could be regarded as an attribute of body depth. Correlation analysis indicated that sculpin tended to have a lower caudal peduncle depth under faster bottom current velocities at the tributary scale. Individuals deviating substantially from the centroid of DF2 in each tributary had a poorer body condition. Our results suggest the possibility of changes in the morphological characters of Japanese fluvial sculpin in relation to environmental conditions even at the tributary scale within the same river system., WILEY-BLACKWELL
Ecology of Freshwater Fish, Apr. 2014, [Reviewed]

千葉県北東部の谷津田におけるトウキョウサンショウウオHynobius tokyoensisの産卵場の分布及びその周辺環境　　　　　　　　　　　　　　　
棗田孝晴; 大木智矢, Lead, 応用生態工学会
応用生態工学, Mar. 2014, [Reviewed]

Diet composition and food intake of two competitive heron species: the Grey Heron and the Great Egret
Hamao Shoji; Akiba Toru; Natsumeda Takaharu, Last, The Grey Heron Ardea cinerea and the Great Egret A. alba are assumed to have competitive relationship for food resource because of their overlapped feeding habitats. We observed their feeding behaviours in rice paddy fields in central Honshu, Japan. The main diets of both species were pond snails Sinotaia quadrata histrica and weather loach Misgurnus anguillicaudatus, suggesting competition for foods between the herons. Although the frequencies of peck trials and successful pecks were higher in Great Egrets than in Grey Herons, food intake had a tendency to be greater in Grey Herons than in Great Egrets. This inverse result must be caused by the higher proportion of small pond snails in Great Egret diets. Great Egrets frequently peck and obtain smaller foods, and Grey Herons use infrequent chance to obtain larger foods, which may relax the competition in food between the species., Japan Bird Research Association
Bird Res., Sep. 2013, [Reviewed]

Variation in life-history traits of male Japanese fluvial sculpin Cottus pollux in relation to nest abundance along a stream course
Takaharu Natsumeda; Masahide Yuma; Michio Hori, Lead, Life-history theory predicts the occurrence of variation in the life-history traits of fish populations under different environmental conditions; however, most studies have focused on such variation between geographically separated populations. We compared breeding characteristics and life-history traits of the Japanese fluvial sculpin (Cottus pollux), a bottom-dwelling nest-holding fish, between two adjacent sites sub-divided by a weir along a stream course in central Japan. Males in the area with a lower abundance of nest sites reached sexual maturity at an earlier age and had a shorter life span than males in the area with sufficient nest abundance. Size-dependent male reproduction was found only in areas with a shortage of nest sites, supporting the assumption of competitive exclusion among males for nests. Females matured at the same age in both sites with no differences in age-specific growth rates and mortality. Our results provide evidence for life-history variation in age and size at maturity and age-specific mortality schedule of males in nest-holding fishes in a single stream population via different sexual selection regimes related to differences in nest abundance between sites., SPRINGER
Environmental Biology of Fishes, Sep. 2013, [Reviewed]

Diurnal bottom feeding of predator fish strengthens trophic cascades to benthic algae in experimental flow-through pools
O. Katano; T. Natsumeda; N. Suguro, Mechanisms that determine the strength of trophic cascades from fish to benthic algae via algivorous invertebrates in stream communities have not been clarified. Using seven fish species, we tested the hypothesis that the interspecific variation of predatory behavior of fishes affects the strength of trophic cascades in experimental streams. One or two species of fish were introduced into flow-through pools of 2.5 m(2) and the abundances of benthic invertebrates and algae were monitored. Pike gudgeon, a diurnal benthic feeder, triggered a strong trophic cascade but masu salmon, a diurnal drift feeder, did not have a cascading effect. Japanese dace, which is both a diurnal benthic and drift feeder, increased the algal biomass, but the nocturnal benthic feeder cut-tailed bullhead had little cascading effect. The diurnal benthic feeder silver crucian carp also had a cascading effect, but no trophic cascade was triggered either by Asian pond loach or by Japanese common catfish, both of which are nocturnal benthic feeders. Thus, diurnal benthic fish exerted a stronger cascading effect than diurnal drift feeders or nocturnal fish. The combination of two fish species enhanced the per-capita strength of trophic cascades, probably because one of the two species, the benthic feeder, preyed on more invertebrates than in the single-species pools., SPRINGER JAPAN KK
Ecological Research, Sep. 2013, [Reviewed]

千葉県北東部の谷津田における水生ホタル類の生息環境要素の抽出
棗田孝晴・松田武也・遊磨正秀, Lead, 一般社団法人日本生態学会
保全生態学研究, May 2013, [Reviewed]

利根川最下流域に流入する感潮河川最下流部の堰が魚類相に及ぼす影響　　　　　　　　　　　　　　　
棗田孝晴; 瀬谷政貴, Lead
応用生態工学, Dec. 2012, [Reviewed]

Diet and food selectivity of Japanese fluvial sculpin Cottus pollux (large-egg type) in the upper regions of the Chikuma River　　　　　　　　　　　　　　　
Takaharu Natsumeda; Tetsuya Tsuruta; Hirohiko Takeshima; Kei’ichiro Iguchi, Lead
Ichthyological Research, Nov. 2012, [Reviewed]

Size-mediated dominance and aggressive behavior of male Japanese fluvial sculpin Cottus pollux (Pisces: Cottidae) reduce nest-site abundance and mating success of conspecific rivals.
Takaharu Natsumeda; Seiichi Mori; Masahide Yuma, Lead
Journal of Ethology, 2011, [Reviewed]

Winter feeding of the common cormorant (Phalacrocorax carbo hanedae) in a temperate river system in Japan　　　　　　　　　　　　　　　
棗田孝晴; 鶴田哲也; 亀田佳代子; 井口恵一朗, Lead, 冬期の内陸部におけるカワウの漁業被害の実態解明に資することを目的として、冬期に千曲川で有害鳥獣駆除により捕殺されたカワウ22個体を対象に、胃内容物調査を実施した。その結果、群れを形成するオイカワやウグイがカワウに捕食されやすいことが明らかとなった。
Journal of Freshwater Ecology, Mar. 2010, [Reviewed]

絶滅のおそれのある日本産淡水魚の生態的特性の解明　　　　　　　　　　　　　　　
棗田孝晴; 鶴田哲也; 井口恵一朗, Lead, 絶滅のおそれのある汽水・淡水魚類226種と非該当種132種を対象とし、生息場所、体サイズ、食性などの20変数に着目して、国内広域分布種から絶滅危惧種へと移行した魚種の生態的特性の抽出を試みた。その結果、人間活動における各魚種への干渉や馴染みの程度を示す、人間との距離が、普通種から絶滅危惧種への移行を予測するうえで有効であることが示された。
日本水産学会誌, Mar. 2010, [Reviewed]

Predation by Zacco platypus, Tribolodon hokonensis and Gymnogobius petschiliensis on Ayu (Plecoglossus altivelis altivelis) larvae under light and dark experimental conditions
Tsuruta Tesuya; Koike Ryoto; Takeshima Hirohiko; Natsumeda Takaharu; Iguchi Keiichirou, This study aims to evaluate the predation pressure during daytime and nighttime on larvae of Ayu, Plecoglossus altivelis, by comparing the number consumed by three predatory fish species between light and dark experimental conditions. Four of five individuals for Zacco platypus consumed more Ayu larvae in the light condition than in the dark condition. The number of Ayu larvae consumed by all four individuals for Tribolodon hakonensis in the light condition was about twice that in the dark condition. For Gymnogobius petschiliensis, three of five individuals ate few Ayu larvae, one showed a higher and the other showed a lower feeding activity under the light condition. Because two out of three predators showed a consistently higher feeding activity on Ayu larvae under the light condition, we suggest that the diurnal predation pressure is a selective factor for not only nocturnal drift in Ayu larvae but also concentrating hatching after sunset., 日本魚類学会
Jpn. J. Ichthyol., 2010, [Reviewed]

Movement patterns of Japanese fluvial sculpin in a headwater stream over two years　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Transactions of the American Fisheries Society, Nov. 2007, [Reviewed], [Invited]

Variation in age at first reproduction of male Japanese fluvial sculpin induced by the timing of parental reproduction　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Journal of Fish Biology, May 2007, [Reviewed]

Estimates of nocturnal home-range size of the adult Japanese fluvial sculpin, Cottus pollux (Pisces: Cottidae) in relation to bottom topography and sampling intervals　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Journal of Ethology, Jan. 2007, [Reviewed]

Biotic and abiotic influences on nest-hatching outcome in the Japanese fluvial sculpin　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Environmental Biology of Fishes 巻号頁 74, 349-356 出版日 2005/11, Nov. 2005, [Reviewed]

Effects of a severe flood on the movements of the Japanese fluvial sculpin　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Environmental Biology of Fishes, Dec. 2003, [Reviewed]

Space use by the Japanese fluvial sculpin, Cottus pollux, related to spatio-temporal limitations in nest resources　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Environmental Biology of Fishes, Dec. 2001, [Reviewed]

Year-round local movements of the Japanese fluvial sculpin, Cottus pollux (large egg type), with special reference to the distribution of spawning nests　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Ichthyological Research, Feb. 1999, [Reviewed]

Home range of the Japanese fluvial sculpin, Cottus pollux, in relation to nocturnal activity patterns　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Environmental Biology of Fishes, Nov. 1998, [Reviewed]

Size-assortative nest choice by the Japanese fluvial sculpin in the presence of male-male competition　　　　　　　　　　　　　　　
Takaharu Natsumeda, Corresponding
Journal of Fish Biology, Jul. 1998, [Reviewed]

Sexual size dimorphism, growth and maturity of the Japanese fluvial sculpin, Cottus pollux (large egg type), in the Inabe River, Mie Prefecture, central Japan.　　　　　　　　　　　　　　　
Natsumeda T; S. Kimura; Y. Nagata, Lead
Ichthyological Research, Feb. 1997, [Reviewed]

茨城県鉾田市玉田地区における海産魚食魚 3 種の食性比較　　　　　　　　　　　　　　　
関 拓海・棗田孝晴
茨城大学教育学部紀要（自然科学）, 31 Jan. 2024
Last

コイ科淡水魚類（Carassius auratus）の腸管通過後のアルテミア（Artemia franciscana）耐久卵の消化耐性　　　　　　　　　　　　　　　
棗田孝晴
茨城大学教育学部紀要（自然科学）, 31 Jan. 2024

高温湯煎処理がアルテミア（Artemia franciscana）耐久卵の孵化に及ぼす影響　　　　　　　　　　　　　　　
棗田孝晴
茨城大学教育学部紀要（自然科学）, 31 Jan. 2023

飼育環境におけるカジカ大卵型・中卵型・小卵型の卵および仔稚魚の生残状況
藤井亮吏; 下村雄志; 田原大輔; 棗田孝晴; 岸 大弼
岐阜県水産研究所研究報告, Mar. 2018

小学校理科教材「メダカ」の扱いにおける問題提起 : 国内外来種の視点から　　　　　　　　　　　　　　　
棗田孝晴
茨城大学教育学部紀要（自然科学）, Jan. 2018

千葉県銚子市におけるロードキルの実態と被害軽減策の提案　　　　　　　　　　　　　　　
棗田孝晴; 石毛智也
茨城大学教育学部紀要（自然科学）, May 2016
Lead

千葉県北東部の谷津田の草地におけるキュウシュウノウサギ （Lepus brachyurus brachyurus） の糞場周囲の草高の選択性
棗田孝晴; 吉田孝志
茨城大学教育学部紀要（自然科学）, May 2015
Lead

人工池におけるモツゴ Pseudorasbora parva の成長と成熟
棗田孝晴; 滑川治伸
茨城大学教育学部紀要（自然科学）, May 2014
Lead

カジカ大卵型　　　　　　　　　　　　　　　
棗田孝晴
豊田市矢作川研究所月報Rio, May 2005, [Invited]

環境変化に対応した動物の生活史変異　　　　　　　　　　　　　　　
棗田孝晴
山梨学院大学一般教育部論集, Jan. 2002

カワヨシノボリの底質操作実験　　　　　　　　　　　　　　　
棗田孝晴; 山本敏哉; 遊磨正秀
京都大学防災研究所水資源研究センター研究報告, Apr. 1998
Lead

河川環境と魚類群集 -取水堰によって生じた砂州の影響-　　　　　　　　　　　　　　　
遊磨正秀; 田中哲夫; 大野泰史; 棗田孝晴; 山本敏哉
京都大学防災研究所水資源研究センター研究報告, Dec. 1996

生きざまの魚類学 魚の一生を科学する（猿渡敏郎 編著）　　　　　　　　　　　　　　　
棗田 孝晴, Contributor
東海大学出版部, Jun. 2016
9784486020585

茨城における絶滅のおそれのある野生生物・動物編 2016年度改訂版（茨城県レッドデータブック）　　　　　　　　　　　　　　　
棗田孝晴, Contributor
茨城県生活環境部環境政策課, Mar. 2016

Threatened Wildlife of Japan Red Data Book 2014 ,Pisces - Brackish and Fresh Water Fishes　　　　　　　　　　　　　　　
Takaharu Natsumeda, Contributor
GYOSEI Corporation, Feb. 2015
9784324098981

淡水魚研究入門 水中のぞき見学（長田芳和 編著）　　　　　　　　　　　　　　　
棗田 孝晴, Contributor
東海大学出版部, Sep. 2014
9784486020165

Human and Animal Matings: Strategies, Gender Differences and Environmental Influences (M. Nakamura & T. Ito, eds)　　　　　　　　　　　　　　　
Takaharu Natsumeda, Contributor
NOVA Science Publishers Inc., Mar. 2013
9781624170850

カジカ類の多様性‐適応と進化‐（宗原弘幸,後藤 晃,矢部 衞 編）　　　　　　　　　　　　　　　
棗田 孝晴, Contributor
東海大学出版会, Dec. 2011
9784486019190

Telemetry: Research, Technology and Applications (D. Barcuro & J. Daniels, eds).　　　　　　　　　　　　　　　
Takaharu Natsumeda & Yoshikazu Nagata, Contributor
NOVA Science Publishers Inc., Feb. 2009
9781606925096

汽⽔湖涸沼の流⼊河川における絶滅危惧種ウツセミカジカ稚⿂の⾷性と⽣息環境特性　　　　　　　　　　　　　　　
柏⾕ 翔⼤・⽊村 将⼠・⼩熊 進之介(茨⼤⽔圏 FS)・棗⽥ 孝晴(茨⼤教育)・加納光樹(茨⼤⽔圏 FS)
2022年度日本魚類学会年会, 19 Sep. 2022, 日本魚類学会
20220918, 20220920

堤体起伏時における堰下の淡⽔⿂種組成の⽐較　　　　　　　　　　　　　　　
棗⽥ 孝晴・阿部 信⼀郎(茨⼤教育)
2022年度日本魚類学会年会, 19 Sep. 2022, 日本魚類学会
20220918, 20220920

尾鰭試料に基づく底生淡水魚類８種の炭素・窒素安定同位体比の有効性の検証　　　　　　　　　　　　　　　
棗田 孝晴(茨城大),中川 惠(国環研),松崎 慎一郎(国環研)
日本陸水学会第86回大会 兵庫大会（オンライン開催）, 16 Sep. 2022
20220916, 20220919

生息環境に適応したカジカ大卵型の繁殖時期の調節　　　　　　　　　　　　　　　
古屋康則・今瀬優里(岐阜大教育)・棗田孝晴(茨城大教育)・藤井亮吏(岐阜県水産研)
令和3年度公益社団法人日本水産学会秋季大会, 14 Sep. 2021
20210913, 20210916

ダム下区間における通し回遊性底生魚類の流程分布と資源利用　　　　　　　　　　　　　　　
棗田孝晴; 仲長康行; 大澤勇人; 阿部信一郎; 鹿野雄一; 決断科学; 井口恵一朗; 院水産環境科学; 井口恵一朗
2018年度日本魚類学会年会, 07 Oct. 2018, 日本魚類学会

カジカ大卵型の繁殖期の変異と水温との関係　　　　　　　　　　　　　　　
藤井亮吏; 棗田孝晴; 田原大輔; 古屋康則
2016年度日本魚類学会年会, 24 Sep. 2016, 日本魚類学会

落差工がカジカ大卵型の移動生態に及ぼす影響　　　　　　　　　　　　　　　
片山 暢; 田原大輔; 洋; 武島弘彦; 棗田孝晴
平成28年度公益社団法人日本水産学会春季大会, 29 Mar. 2016, 公益社団法人日本水産学会

冬季の高水温がカジカ小卵型の雄の精子形成に及ぼす影響　　　　　　　　　　　　　　　
古屋康則; 森 温子; 田原大輔; 山家秀信; 生物産業; 棗田孝晴; 藤井亮吏
平成28年度公益社団法人日本水産学会春季大会, 27 Mar. 2016, 日本水産学会

奄美大島役勝川の栄養塩供給源はどこにあるのか　　　　　　　　　　　　　　　
阿部信一郎; 棗田孝晴; 黒田 暁; 井口恵一朗
日本藻類学会第40回大会, 20 Mar. 2016, 日本藻類学会

長野県千曲川水系の支流枝沢におけるカジカ大卵型（Cottus pollux LE）の食性と餌料選択性の流程変異　　　　　　　　　　　　　　　
棗田孝晴; 宮本北斗; 鶴田哲也; 大人間環境; 武島弘彦; 安房田智司; 大理臨海; 井口恵一朗
2015年度日本魚類学会年会, 06 Sep. 2015

カジカ（大卵型）の生殖腺発達過程と繁殖期の多様性　　　　　　　　　　　　　　　
古屋康則; 森 温子; 棗田孝晴; 藤井亮吏
平成27年度公益社団法人日本水産学会春季大会, 30 Mar. 2015

チチカカ湖産カラチ類 Orestias luteus から検出される形態変異　　　　　　　　　　　　　　　
井口恵一朗; 佐古田雅哉; 大院水環; タムタウォンワニッチ; サリニー(マヒドン大; 高橋鉄美; 棗田孝晴
2014年度日本魚類学会年会, 16 Nov. 2014

長野県千曲川水系支流におけるアカザの食性と餌料選択性　　　　　　　　　　　　　　　
棗田孝晴; 鶴田哲也; 産大人間環境; 武島弘彦; 大気海洋研; 安房田智司; 大理臨海; 井口恵一朗
2014年度日本魚類学会年会, 16 Nov. 2014

河川工作物がカジカ大卵型の移動に及ぼす影響　　　　　　　　　　　　　　　
棗田 孝晴; 武島 弘彦; 井口 恵一朗
2013年度日本魚類学会年会, Oct. 2013

冬季の高水温がカジカ小卵型の雄の繁殖活性に及ぼす影響　　　　　　　　　　　　　　　
古屋康則; 森 温子; 藤井亮吏; 河環; 田原大輔; 山家秀信; 生物産; 棗田孝晴
日本水産学会秋季大会, Sep. 2013

岩盤河川におけるカジカ大卵型の移動個体と定住個体を分ける要因　　　　　　　　　　　　　　　
棗田孝晴; 井口恵一朗
2012年度日本魚類学会年会, Sep. 2012

阿武隈山地内に隔絶して生息する短鰭のイワナの隔離個体群　　　　　　　　　　　　　　　
井口恵一朗・宮原寿恵・森田健太郎・棗田孝晴・稲葉修・河村功一
2012年度日本魚類学会年会, Sep. 2012

Local adaptation in morphological characteristics of Japanese fluvial sculpin related to different environmental conditions in a single river system, eastern Japan　　　　　　　　　　　　　　　
Takaharu Natsumeda; Tetsuya Tsuruta; Hirohiko Takeshima; Satoshi Awata; Kei'ichiro Iguchi
International Conference on Ecology & Conservation of Freshwater Fish (Vila Nova de Cerveira, Portugal), May 2012, Internatinal Conference on Ecology & Conservation of Freshwater Fish (Vila Nova de Cerveira, Portugal)

河川工作物による枝沢の細分化がカジカ個体群に及ぼす影響 －胸鰭・腹鰭の非相称性（FA）を指標として－　　　　　　　　　　　　　　　
棗田孝晴; 鶴田哲也; 安房田智司; 宮本北斗; 井口恵一朗
日本水産学会春季大会, Mar. 2012

カジカ（小卵型）の産卵行動 －異型精子は放出されるのか－　　　　　　　　　　　　　　　
古屋康則; 樋口拓真; 藤井亮吏; 田原大輔; 山家秀信; 棗田孝晴
日本水産学会春季大会, Mar. 2012

生息域を共有する希少な底生魚二種の食性比較　　　　　　　　　　　　　　　
棗田孝晴・鶴田哲也・武島弘彦・安房田智司・井口恵一朗
2011年度日本魚類学会年会, Oct. 2011

カジカ大卵型の餌料選択性における水系内変異　　　　　　　　　　　　　　　
棗田孝晴,鶴田哲也,武島弘彦,安房田智司,井口恵一朗
2010年度日本魚類学会年会, Sep. 2010, 日本魚類学会

安定同位体比を用いたカワウ季節移動の検証　　　　　　　　　　　　　　　
棗田孝晴・坂野博之・鶴田哲也・井口恵一朗
日本水産学会春季大会, Mar. 2010

ミトコンドリアDNA塩基配列データに基づく千曲川水系のカジカ大卵型の遺伝的集団構造　　　　　　　　　　　　　　　
棗田孝晴・武島弘彦・鶴田哲也・河村功一・井口恵一朗
第57回日本生態学会大会, Mar. 2010

千曲川上流域におけるカジカ（大卵型）の食性と餌料選択性　　　　　　　　　　　　　　　
棗田孝晴・鶴田哲也・武島弘彦・井口恵一朗
第28回日本動物行動学会大会, Nov. 2009

カジカ大卵型における外部形態変異と生息環境の関係　　　　　　　　　　　　　　　
棗田孝晴,鶴田哲也,武島弘彦,井口恵一朗
2009年度日本魚類学会年会, Oct. 2009, 日本魚類学会

ウグイとギバチが底生藻類に与える栄養カスケードの比較　　　　　　　　　　　　　　　
片野修・棗田孝晴・勝呂尚之
日本水産学会秋季大会, Sep. 2009

ウツセミカジカ（カジカ小卵型）の成長最適水温　　　　　　　　　　　　　　　
河田新平・藤井亮吏・田原大輔・棗田孝晴
日本水産学会春季大会, Mar. 2009

絶滅のおそれのある日本産淡水魚の類型化　　　　　　　　　　　　　　　
棗田孝晴・鶴田哲也・井口恵一朗
日本水産学会春季大会, Mar. 2009

稲田における養魚密度が生物群集の動態に与える影響　　　　　　　　　　　　　　　
鶴田哲也・井口恵一朗・棗田孝晴・武島弘彦・小池亮人
第56回日本生態学会, Mar. 2009

カワウの採食場所の決定プロセス　　　　　　　　　　　　　　　
井口恵一朗・田中英樹・鶴田哲也・小西浩司・棗田孝晴・品川卓志・阿倍信一郎・鈴木究真
第56回日本生態学会大会, Mar. 2009

安定同位体を用いたカワウ季節移動の検証　　　　　　　　　　　　　　　
棗田孝晴・坂野博之・鶴田哲也・大森浩二・井口恵一朗
第56回日本生態学会大会, Mar. 2009

千曲川に飛来したカワウの食性　　　　　　　　　　　　　　　
棗田孝晴・鶴田哲也。井口恵一朗
日本水産学会中部支部大会, Nov. 2008

冬の千曲川でカワウが食べた魚たち　　　　　　　　　　　　　　　
棗田孝晴,鶴田哲也,井口恵一朗
2008年度日本魚類学会年会, Sep. 2008, 日本魚類学会

「移動」個体と「定住」個体の生存価を探る：底生淡水魚カジカ（大卵型）を例に　　　　　　　　　　　　　　　
日本動物行動学会第26回大会, Oct. 2007, 日本動物行動学会

河川型カジカCottus polluxにおける繁殖と生態多様性　　　　　　　　　　　　　　　
2007年度魚類学会シンポジウム 「世界の海水・淡水カジカ類における多様性，適応と進化」, Oct. 2007, 日本魚類学会, [Invited]

岩盤河川におけるカジカ大卵型Cottus pollux成魚個体の移動と成長との関係　　　　　　　　　　　　　　　
2006年度日本魚類学会年会, Oct. 2006, 日本魚類学会

Patterns of movement and habitat use of Japanese fluvial sculpin in a Japanese stream: Management implications　　　　　　　　　　　　　　　
Natsumeda Takaharu
American Fisheries Society, Annual Meeting. Symposium title: Ecology and Taxonomy of Freshwater and Diadromous Sculpins (Anchorage, USA), Sep. 2005, [Invited]

洪水がもたらすカジカ大卵型Cottus pollux産卵床の孵化成功　　　　　　　　　　　　　　　
2004年度日本魚類学会年会, Sep. 2004, 日本魚類学会

カジカ大卵型Cottus pollux成魚個体における食性の季節変化　　　　　　　　　　　　　　　
2003年度日本魚類学会年会, Oct. 2003, 日本魚類学会

洪水による隠れ家の減少がカジカ大卵型の移動に及ぼす影響　　　　　　　　　　　　　　　
2002年度日本魚類学会年会, Oct. 2002

いつ繁殖に参加すべきか？渓流性淡水魚カジカ（大卵型）雄の条件的繁殖戦術　　　　　　　　　　　　　　　
第20回日本動物行動学会大会, Nov. 2001

Sep. 2015, 日本陸水学会

2008, 日本生態学会

2008, 日本水産学会

2007, 応用生態工学会

1994, 日本魚類学会

1992, 日本動物行動学会