良質な牛乳生産を目指して、反芻動物の乳房炎を防除するために乳房の自然免疫に着目している。乳房内の抗菌物質（defensin, S100, cathelicidin, lactoferrin）等の免疫物質を最大限利用して、感染を防御する手法を検討している。

My study focuses on innate immune function in mammary gland to prevent and treat mastitis. I try to establish the appropriate methods to maximize the amount of antimicrobial components（defensin, S100, cathelicidin, lactoferrin）in milk. Mastitis caused by the bacterial components translocated from uterus was identified.

keywords：mastitis, mammary gland, antimicrobial component

1. Effect of Repeated Intrauterine Infusion of Lipopolysaccharides on Mastitis in Goats. Theriogenology 193: 87-92（2022）
2. Effect of temporary cessation of milking and estradiol combination on the antimicrobial components in goat milk. Research in Veterinary Science 152: 387–394（2022）
3. Investigating mammary glands of lactating goats for the presence of tertiary lymphoid organs. Frontiers in Immunology 13:941333（2022）

世界に広がる塩害土壌でも栽培可能な作物品種の育成や遺伝子組換えによる耐塩性作物の創出を行っています。また、植物の生育を促進する善玉菌の単離とその実用化技術、肥料資源の節約技術の開発を行っています。

Our research focuses on molecular physiological analysis of environmental stress（high salinity, nutrient deficiency, etc.）tolerance in higher plants for sustainable crop production. We also study plant growth promoting bacteria to increase crop production through improving bacterial fitness in the rhizosphere and identifying bioactive compounds useful for crop growth.

keywords：Sustainable crop production, Rice, Salinity stress, Nutrient deficiency, Plant nutrition, Plant growth promoting bacteria

1. Riboflavin seed priming activates OsNHXs expression to alleviate salinity stress in rice seedlings. J Plant Growth Regul 42: 3032-3042（2023）
2. Different rhizospheric pH conditions affect nutrient accumulations in rice under salinity stress. Plants 10: 1295（2021）
3. Contribution of two different Na⁺ transport systems to acquired salinity tolerance in rice. Plant Sci 297: 110517（2020）

瀬戸内海の重要種を対象に、種苗放流や資源管理によって、資源を増殖し、持続的に利用するための研究を行っている。特に、クロダイは研究の代表種で、最近では産卵生態や移動回遊の解明に取り組んでいる。

My current research focuses on sustainable use for commercially important fish using by stock enhancement and resource management. Black sea bream is representative fish of my research, I want to pursue studies to clarify all of the mysteries of this fish as my life work.

keywords：fish, black sea bream, stock enhancement, resource management, sustainable use

1. The role of the isolation of the marginal seas during the Pleistocene in the genetic structure of black sea bream Acanthopagrus schlegelii （Bleeker, 1854）in the coastal waters of Japan. PeerJ 9（24）:e11001（2021）
2. Estimating the spawning season of black sea bream Acanthopagrus schlegelii in Hiroshima Bay, Japan, based on temporal variation in egg density. Fish Sci, 86:645-653（2020）
3. Infestation of the parasitic isopod Mothocya parvostis on Juveniles of the black sea bream Acanthopagrus schlegelii as an optional intermediate host in Hiroshima Bay. Zool Sci,1-10（2020）

海洋動物プランクトンとして最も重要なカイアシ類、クラゲ類、魚介類に寄生するカイアシ類の系統分類、進化、生活史、動物地理、生態について世界トップレベルの研究成果を世に送り出している。

The systematics, evolutionary biology and ecology of zooplankters such as copepods and jellyfish have been most intensively investigated in the world. Recently, the life cycle of symbiotic copepods such as sea lice have been studied.

keywords：Copepods, Ecology, Evolution, Life cycle, Jellyfish, Symbiosis, Systematics

1. Evolutionary transformation of mouthparts from particle-feeding to piercing carnivory in viper copepods: review and 3D analysis of a key innovation using advanced imaging techniques. Front Zool 16:35（2019）
2. Symbionts of marine medusae and ctenophores. Plankton Benthos Res, 4（1）: 1-13.（2009）
3. Sexual dimorphism in calanoid copepods. Hydrobiologia 453/454: 441-466.（2001）

飼料資源の有効利用（副産物飼料）、環境負荷の低減（ウシからの温室効果ガス）、栄養代謝調節（アミノ酸代謝）などを目標にして、反芻家畜（ウシ、ヤギ、ヒツジ）の飼料と栄養代謝に関する研究を行っている。

In order to establish sustainable and healthy ruminant production system, I am studying on the by-product feed utilization, mitigation of enteric methane emission from ruminants, and regulation of amino acid metabolism in cattle and sheep by the natural functional compounds in forage.

keywords：Forage, digestion, metabolism, protein, amino acid, cow, sheep, milk, meat.

1. Phytol supplementation alters plasma concentrations of formate, amino acids, and lipid metabolites in sheep. Animal 15:100174.（2021）
2. Effects of ensiling treatment for tuber crop forages and grain source on carbohydrate digestion, nitrogen utilization, and urea metabolism in sheep. Anim Feed Sci Technol 243: 140-149.（2018）
3. Effects of nitrogen fertilizer and harvesting stage on photosynthetic pigments and phytol contents of Italian ryegrass silage. Anim Sci J 88: 1513 – 1522.（2017）

単細胞藻類を専門とし、その環境適応性、光合成機能等を培養実験・フィールド調査両面から探っています。彼らが支える生態系（海洋の生物生産システム、マングローブ・サンゴ礁生態系）の保全に役立てたいと考えています。

Microalgae, or single-cell algae, especially their diversity, environmental adaptation and photosynthetic mechanisms are investigated both from field studies and laboratory culture experiments. Goal of the study is to apply these knowledges for conserving characteristic ecosystems（e.g. coastal biological production, mangrove ecosystem, coral reef ecosystem, etc）whose basis are microalgae.

keywords：Microalgae, aquatic ecosystem, coast, mangrove, coral reef

1. Fecal pellets of giant clams as a route for transporting Symbiodiniaceae to corals/ PLoS ONE/2020
2. Zooxanthellal genetic varieties in giant clams are partially determined by species-intrinsic and growth-related characteristics/ PLoS ONE/ 2017
3. Aplication of a pulse-amplitude-modulation（PAM）fluorometer reveals its usefulness and robustness in the prediction of Karenia mikimotoi blooms: A case study in Sasebo Bay, Nagasaki, Japan/ Harmful Algae/ 2017

サンゴ礁などリーフ環境に棲む魚類の採餌生態や産卵生態に注目するフィールド調査から、生存戦略や繁殖戦略を解明する研究を進めている。

Behavioral ecology of reef fishes focusing on survival and reproductive strategies（e.g. foraging and mating tactics, social and mating system, and sex change patters）by use of the methodology of animal sociology including field observation and demographic survey in nature.

keywords：Underwater observation, field survey, function of behaviors, intra- and interspecific relationships, individual-level data, reproductive succes

1. Reversed sex change in the haremic protogynous hawkfish Cirrhitichthys falco in natural conditions. Ethology 118: 1-9（2012）
2. Effect of changing harem on timing of sex change in female cleaner fish Labroides dimidiatus. Anim Behav 62: 251-257（2001）
3. Alternative spawning tactics of female angelfish according to two different contexts of sex change. Behav Ecol 8: 372-377（1997）

乳牛の哺育期および分娩移行期など栄養管理に起因する疾病リスクの高いステージに着目し、被害軽減に向けた栄養生理学的研究に取り組んでいる。初乳給与と消化管ホルモン、小腸発達との関連性などを明らかにしている。

It is focusing on the nutrition and metabolism at transition periods for weaning and calving in dairy cattle. Especially, it has the study that the relationship between dietary nutrition and metabolic hormone action.

keywords：gastro-intestinal hormone, dairy cow, dairy calf, nutritional management

1. Effects of medium-chain fatty acids and tributyrin supplementation in milk replacers on growth performance, blood metabolites, and hormone concentrations in Holstein dairy calves. J. Dairy Sci. 106, 4599–4607.（2023）
2. Effect of kraft pulp inclusion in calf starter on performance, health, and plasma concentration of glucagon-like peptide 2 in calves. J. Dairy Sci. 106, 4443–4453.（2023）
3. Effects of rumen-protected glutamate supplementation during the periparturient period on digestibility, inflammation, metabolic responses, and performance in dairy cows. J. Dairy Sci. 105, 3129–3141.（2022）

植物の表皮細胞分化に関わる転写因子の研究を行っている。表皮細胞は根毛のような特殊な器官に分化する。分化制御ネットワークの解明により、植物の形態形成や細胞分化の仕組みを分子レベルで理解する事を目指す。

The aim of our study is to elucidate the mechanism of epidermal cell differentiation in plants, by using epidermal cells form specialized organs, such as root hairs. By focusing on the function of transcription factors, we aim to understand plant morphogenesis and cell differentiation at the molecular level.

keywords：Arabidopsis, root hair, transcription factor

1. Identification of six CPC-like genes and their differential expression in leaves of tea plant, Camellia sinensis. J. Plant Physiol. 263: 153465 （2021）
2. Function of the TRY C-terminal region artificially fused with its homologous transcription factors inducing root hair differentiation in Arabidopsis.B.B.B. 85: 1114-1120（2021）
3. Extended C-termini of CPC-LIKE MYB proteins confer functional diversity in Arabidopsis epidermal cell differentiation. Development 144:2375-2380（2017）

瀬戸内海を中心に、日本沿岸における魚介類の資源生態を研究している。特に稚魚期の摂食や成長に関する研究のほか、地球温暖化など環境の変化に対する水産資源の応答に関する研究を進めている。

I am studying the fisheries biology in Japan, especially in the Seto Inland Sea, to contribute to the sustainable coastal fisheries. My research interests are mainly in the life history traits of commercially important species, predator-prey interactions, and the response of fishes to climate change.

keywords：Aquatic ecology, Fisheries, Life history, Thermal biology, Tidal flat

1. Seasonal bathymetric distributions of three coastal flatfishes: estimation from logbook data for trawl and gillnet fisheries. Fish Res 233: 105733.（2021）
2. Importance of experienced thermal history: effect of acclimation temperatures on the high-temperature tolerance and growth performance of juvenile marbled flounder. J Therm Biol 97: 102831.（2021）
3. Food availability before aestivation governs growth and the winter reproductive potential in the capital breeding fish, Ammodytes japonicus. PLoS ONE 14: e0213611.（2019）

ゲノム情報をもとに日本鶏をはじめとした家畜・家禽の起源や世界伝播プロセス、そして多様な表現型を創出する遺伝的基盤を解明し、さらなる育種を進めていくことを目指しています。
Based on genome information, we aim to elucidate the domestication origins , the global propagation processes, and the genetic basis for the diverse phenotypes of Japanese native chickens and other livestock, in order to promote further breeding.

keywords：genome, evolution, breeding

1. Phylogenomics and morphology of extinct paleognaths reveal the origin and evolution of the ratites. Current Biology, 27:68-77（2017）
2. Paleogenomics reveals independent and hybrid origins of two morphologically distinct wolf lineages endemic to Japan. Current Biology 32:2494-2504（2022）
3. Complete mitochondrial genome analysis clarifies the enigmatic origin of Haplogroup D in Japanese native chickens. The Journal of Poultry Science, 59: 316-322（2022）

環境分析化学を活用して、幅広い水環境問題の解決に挑戦しています。特にリサイクル材料を有効活用した沿岸環境の修復、生活・産業排水処理技術の開発、水環境を評価するための分析法の開発について研究しています。

I am an aquatic environmental scientist with a broad perspective-wastewater treatment, restoration of coastal seas etc. on the basis of my analytical chemistry background. My specialties and skills are as follows:（1）Coastal environment restoration using industrial recycled materials, （2）Development of analytical methods to evaluate aquatic environment.

keywords：Aquatic environment, Environmental analytical chemistry, Environmental remediation, SDGs, Wastewater treatment

1. Sustained release properties of cement-bonded composites with organic waste based anaerobic digestate as nutrient carriers for marine microalgae. Environ. Sci. Pollut. Res. 30: 56343-56352（2023）
2. Spatial and temporal distribution of hydrogen sulfide and sulfur species in coastal marine sediments collected from Osaka Bay, Japan. Marine Chem. 251: 104233（2023）
3. Throughfall and stemflow chemical dynamics of Satoyama, a traditional secondary forest system under threat in Japan. J. Forest Res. 33: 813-826（2022）

子どもができる仕組みについて、代謝と内分泌に焦点を当て、モデル動物を用いた基礎研究から、家畜を用いた実用化研究まで行っている。この成果を基盤にした“効率よく家畜生産ができる繁殖技術開発”を目指している。

Our aim is to develop the reproductive technology in animal production. To achieve this aim, we are focusing on mammalian reproductive biology of both female and male, such as ovary, oocyte, testis and sperm, especially focusing on metabolism, endocrine and immune system.

keywords：animal reproduction, reproductive technology, endocrine, metabolism

1. A simple sperm-sexing method that activates TLR7/8 on X sperm for the efficient production of sexed mouse or cattle embryos. Nature protocols,（2020）
2. Activation of Toll-like receptor 7/8 encoded by the X chromosome alters sperm motility and provides a novel simple technology for sexing sperm. PLoS Biol.,（2019）
3. The acceleration of reproductive aging in Nrg1flox/flox; Cyp19‐Cre female mice. Aging cell, 16, 1288-1299.（2017）

沿岸生態系の生物多様性の維持に欠かせない藻場や海藻養殖で顕在化する、気候変動の影響に注目している。海藻類の系統分類や海藻相研究を行う一方、食用海藻や石灰藻について実験下での生育特性を把握してきた。

Seaweeds benefit human life by providing food and indirectly by maintaining biodiversity in coastal ecosystems. Focusing on the impacts of climate change on seaweed aquaculture and seaweed forests, I have examined molecular phylogeny and ecophysiology of key species of macroalgae and conducted empirical research relevant for aquaculture.

keywords：coralline algae, edible seaweeds, optimum growth conditions, rhodolith, taxonomy

1. Morphological and molecular assessment of Lithophyllum okamurae with the description of L. neo-okamurae sp. nov.（Corallinales, Rhodophyta）. Phycologia 61（2）:117-131（2022）
2. Effects of water temperature, light and nitrate on the growth of sporelings of the non-geniculate coralline alga Lithophyllum okamurae（Corallinales, Rhodophyta）. J Appl Phycol 32: 1923 - 1931（2020）
3. Western Pacific. In Rhodolith/Maërl Beds: a global perspective. Springer, Switzerland. pp. 335-347.（2017）

主にニワトリをモデル動物として用い、本能行動（摂食行動・飲水行動・攻撃行動など）の脳内メカニズムについて、間脳視床下部を中心に研究しています。

Research of the brain mechanisms of innate behavior such as feeding, drinking, and aggressive behavior in chickens.

keywords：feeding behavior, drinking behavior, aggressive behavior, hypothalamus, chicken

1. Screening of the behavioral tests for monitoring agonistic behavior of layer chicks. J.Poult.Sci. 54:296-302.（2017）
2. Blood testosterone concentration and testosterone-induced aggressive behavior in male layer chicks: Comparison between isolated- and grouped-raising. J.Poult.Sci. 56:290-297.（2019）
3. Effects of testicular and non-testicular testosterone on territorial and isolation-induced aggressive behavior of male layer chicks. J.Poult. Sci. 57:236-240.（2020）

乳牛の生産寿命（泌乳開始から除籍までの期間の長さ）に影響を及ぼす要因の解明を目的として、血液中抗酸化物質（グルタチオン、ビタミンCなど）濃度、初産分娩月齢などと、様々な疾病発症率や、繁殖指標、除籍率との関連性を明らかにする研究を行っている。

In order to improve the productive lifespan（the period from beginning of milk production to culling）of dairy cows, I research the relation of blood antioxidants（Vitamin C, glutathione, etc.）concentrations and age at first calving with disease incidence, reproductive performances and culling incidence.

keywords：Dairy cows, Productive lifespan, Milk production, Antioxidants, Lifecycle

1. Effect of relationships among clinical mastitis incidence, reproductive performance, and culling rate on the lifetime of dairy cows at Hiroshima University Farm./Anim. Sci. J. /2021
2. Changes of photosynthetic pigments and phytol content at different levels of nitrogen fertilizer in Italian ryegrass fresh herbage and hay./ Grassl. Sci./2022
3. A comparison of plasma glucose and oxidative status in lactating dairy cows in summer and autumn/Anim. Sci. J./2016

釣り餌として利用される多毛類やエビ類を対象とした生態学的研究、とくに外来種としての分布状況や生物多様性に及ぼす影響、および希少在来種の保全と有効活用を目的とした生活史の解明について研究している。

My research interests are ecological researches on aquatic organisms, especially understanding of life history aimed at the dispersal mechanism of alien species and the conservation of threatened species.

keywords：Benthos, Fishing bait, Freshwater, Intertidal flat, polychaete, shrimp

1. Population genetics of the alien freshwater shrimp Palaemon sinensis（Sollaud, 1911）in Japan based on mitochondrial 16S rRNA sequence analysis Aquat. Invasions 16:710-720（2021）
2. Population Dynamics of Lancelet Branchiostoma japonicum in the Seto Inland Sea, Japan. Zool Sci 37:331-337（2020）
3. Seasonal occurrence of the alien freshwater shrimp Palaemon sinensis（Sollaud, 1911）in lower reaches of a river in western Japan. Bioinvasions Rec. 8:369–378（2019）

鳥類とほ乳類の生殖幹細胞を対象として、培養・凍結保存・移植等の操作技術を開発・改善し、動物の遺伝資源を細胞レベルで保存すること、ヒト不妊治療技術を開発することに挑戦している。

My research group aim to develop culture, cryopreservation and transplantation of germ cells including primordial germ cells and spermatogonial stem cells in birds and mammals, and to apply germ cell manipulation technologies from conservation of biological diversity to human infertility treatment.

keywords：germ cells, chicken, mouse, genetic coneservation, infertility treatment

1. Transient suppression of transplanted spermatogonial stem cell differentiation restores fertility in mice. Cell Stem Cell 28:1-14.（2021）
2. Efficient system for preservation and regeneration of genetic resources in chicken: concurrent storage of primordial germ cells and live animals from early embryos of a rare indigenous fowl（Gifujidori）. Reprod Fertil Dev 22:1237-1246.（2010）
3. Germline replacement by transfer of primordial germ cells into partially sterilized embryos in the chicken. Biol Reprod 83:130-137.（2010）

持続可能な植物生産のために、有用資源の有効活用と土壌中での養分の動態および植物による利用性の改善に関する研究を行っています。堆肥などの有機物施用による作物（イネなど）の生産性や養分利用効率を解析しています。

Aiming for sustainable plant production, we are conducting researches on effective utilization of useful resources, dynamics of nutrients in soils, and improvement of their utilization by plants. We analyze productivity and nutrient use efficiency of crops（such as rice）by applying organic matter such as compost.

keywords：Plant production, Soil, Organic matter, Nutrient cycling

1. Phytate degradation by fungi and bacteria inhabiting sawdust and coffee residue composts. Microbes Environ.（2013）
2. Isolation and characterization of cellulose-decomposing bacteria inhabiting sawdust and coffee residue composts. Microbes Environ.（2012）
3. Compost amendment enhances population and composition of phosphate solubilizing bacteria and improves phosphorus availability in granitic regosols. Soil Sci. Plant Nutr.（2011）

ニワトリの健康と安全な卵の生産を目指して、粘膜バリア機能の強化と産卵機能改善に関する研究に取組んでいる。特に、腸内環境を中心として、肝臓や脳、卵管といった周辺の組織とのネットワークに注目している。

I work on the research about enhancement of mucosal barrier function and improvement of egg production for health and secure poultry production of chickens. In particular, I focus on the intestinal environment and the network between intestine and surrounding organs such as liver, brain and reproductive organs.

keywords：Avian, mucosal immunity, digestive tract cellular immunity, reproductive organ, egg laying function, probiotics

1. Slight Disruption in Intestinal Environment by Dextran Sodium Sulfate Reduces Egg Yolk Size Through Disfunction of Ovarian Follicle Growth. Front Physiol. 11:607369.（2021）
2. Intestinal inflammation induced by dextran sodium sulphate causes liver inflammation and lipid metabolism disfunction in laying hens. Poult Sci. 99:1663-1677.（2020）
3. Effects of avian infectious bronchitis virus antigen on eggshell formation and immunoreaction in hen oviduct. Theriogenology. 81: 1129-1138.（2014）

持続的な漁業生産可能な海洋環境を維持・管理するために、コンピュータによるデータ解析、生態系モデル解析や海洋調査により沿岸海域の物質循環機構と低次生物生産構造を明らかにするための研究を行っている。
My main purpose of the study is to maintain and manage the marine environment that is available for sustainable fishery production. For the purpose, I perform a study about the material circulation system in the coastal seas by computer data analysis, numerical ecosystem model and field observations.

keywords：sustainable fishery production, computer data analysis, numerical ecosystem model

1. Primary Production and Physical Structure of the Seto Inland Sea, Japan / Bull. Coastal Oceanogr.（1997）
2. Analysis of Primary Production in the Seto Inland Sea, Japan, Using a Simple Ecosystem Model/ J. Oceanogr. 54: 123-132.（1998）
3. Optical Properties of Sea Water in Hiroshima Bay, Japan / Oceanography in Japan（1997）

生物学的心理学を専門とする。動物の心を生物学的な機能のひとつとして考える。脳を含む身体という有形物から、心という形のないものがいかにして生じるのかを探究している。

Biological psychology and behavioral neuroscience. Studying animal mind as a biological function. My research involves quantitative observation of behavior and manipulation of underlying neural activities to evaluate emotional states of animals.

keywords：behavior, biological psychology, brain, emotion

1. Recording the ventilation activity of free-swimming zebrafish and its application to novel tank tests. Physiology & Behavior, 244, 113665 （2022）
2. Measurement of emotional states of zebrafish through integrated analysis of motion and respiration using bioelectric signals. Scientific Reports 11:187（2021）
3. Relationship between brain morphology and life history in four bottom-dwelling gobiids. Zoological Science, 37, 168-176（2020）

海産無脊椎動物の初期生活史に関して分類・発生・生態の観点から研究している。最近は養殖候補種である甲殻類や棘皮動物の安定的な種苗生産や畜養の技術開発に取り組んでいる。
The main research interest is the early life history of marine invertebrates particularly from the viewpoints of taxonomy, developmental biology, and ecology. Applied aquaculture sciences in crustaceans and echinoderms are also the research topics that we focus on.

keywords：Lobster, Larvae, Jellyfish, Hatchery, Land-based aquaculture

1. The final phyllosoma, nisto, and first juvenile stages of the slipper lobster Petrarctus brevicornis（Holthuis, 1946）（Decapoda: Achelata: Scyllaridae）. J Crustac Biol 40: 237–246.（2020）
2. Culture of slipper lobster larvae（Decapoda; Achelata; Scyllaridae）fed jellyfish as food. In Lobsters: Biology, Fisheries and Aquaculture. Springer Singapore, Singapore, pp. 519–540.（2019）
3. Amended larval recruitment model for the Japanese spiny lobster Panulirus japonicus from new larval records and population genetic data in Taiwan. J Oceanogr 75: 273–282.（2019）

My research deals with the taxonomy of macroalgae around Southeast Asia, including their use as bioindicators of environmental change. Students are trained in practical taxonomic and communication skills to prepare them for jobs in research, teaching and international science journalism.

keywords：algae, freshwater Rhodophyta, museum studies, phycology, phytogeography, seaweeds

1. The Ulvophyceae（Chlorophyta）of eastern Sorsogon, Philippines, including Halimeda magnicuneata sp. nov.（Bryopsidales）. Botanica Marina 63: 439-453（2020）
2. Satellite image analysis reveals changes in seagrass beds at Van Phong Bay, Vietnam during the last 30 years. Aquatic Living Resources 33: 1-10.（2020）
3. Dictyota adnata Zanardini（Phaeophyceae）– a new record from the Sundarbans mangrove forests, Bangladesh. Bangladesh J. Bot. 49: 407-412（2020）

反芻家畜（乳牛・肉牛）の健全性を担保しつつ生産性を向上させることを目標に、生理・内分泌機構や腸内環境に着目した研究を行っている。

Research focusing on physiological and endocrine mechanisms and intestinal environment to improve health and productivity of ruminants (dairy and beef cattle).

keywords：Ruminants, endocrinology, physiology, hormones, gut-derived peptides, nutrition, intestinal environment

1. Effect of extended colostrum feeding on plasma glucagon-like peptide-1 concentration in newborn calves. J Dairy Sci: 4619-4627 (2019)
2. Effect of kraft pulp inclusion in calf starter on performance, health, and plasma concentration of glucagon-like peptide 2 in calves. J Dairy Sci 4443-4453 (2023)
3. Development of a novel feeding method for Japanese black calves with thermophile probiotics at postweaning. J Appl Microbiol 3870-3882 (2022)

クロダイ属、キジハタなど沿岸性魚類の産卵生態を中心に研究。研究アプローチは成熟魚の解剖、浮性卵の時空間分布、遺伝解析（DNAバーコーディング、環境DNA、分子系統解析）、バイオテレメトリーなど。

My main research interests are the spawning biology of coastal marine fishes（Acanthopagrus species and Epinephelus akaara）. The research approaches are fish dissection, spatio-temporal distribution of pelagic eggs, genetic analysis（DNA barcoding, environmental DNA, and molecular phylogeny）, and biotelemetry.

keywords：Acanthopagrus, biotelemetry, coastal marine fish, DNA barcoding, environmental DNA, Epinephelus akaara, molecular phylogeny, pelagic egg, spawning biology

1. Oyster farms are the main spawning grounds of the black sea bream Acanthopagrus schlegelii in Hiroshima Bay, Japan / PeerJ / e11475 （2021）
2. The role of the isolation of the marginal seas during the Pleistocene in the genetic structure of black sea bream Acanthopagrus schlegelii（Bleeker, 1854）in the coastal waters of Japan / PeerJ / e11001（2021）
3. Estimating the spawning season of black sea bream Acanthopagrus schlegelii in Hiroshima Bay, Japan, from temporal variation in egg density / Fish. Sci. / 645-653（2020）

イネやトウモロコシといった主要作物の安定生産と生産性向上を目指し、栽培環境の評価や栽培管理技術の開発に取り組んでいる。主に、東アフリカや東南アジアの不良環境を対象に研究を行っている。

In our laboratory, we are working on the evaluation of cultivation environments and the development of cultivation management techniques in order to improve the stability and productivity of major crops such as rice and corn. Our research is mainly focused on poor environments in East Africa and Southeast Asia.

keywords：Rice, Stability and productivity, Cultivation management

1. A method for evaluating cold tolerance in rice during reproductive growth stages under natural low-temperature conditions in tropical highlands in Kenya. Plant Prod Sci 23: 466-476.（2020）
2. Effects of different water management practices on the dry matter production process and characteristics in NERICAs. Plant Prod Sci 22: 168-179.（2019）
3. Effects of slope-related soil properties on upland rice growth and yield under slash-and-burn agriculture in South Konawe Regency, Southeast Sulawesi Province, Indonesia. Trop Agr Develop 62: 60-67.（2018）

反芻動物乳房への細菌感染成立機序解明を基盤として、乳房炎制御による食（乳）の安定供給と生乳衛生の向上による食（乳）の安全に貢献することを目指している。また、乳房炎迅速診断技術開発も行っている。

The aim of my studies is to contribute food（milk）supply and food（milk）safety by elucidating mechanisms of bacterial intramammary infection in dairy animals.

keywords：Dairy animals, Intramammary infection, zoonosis, diagnosis

1. Seasonal variations in the concentration of antimicrobial components in milk of dairy cows. Anim Sci J. 91（1）.（2020）
2. Outcome prediction from the first examination in clinical mastitis using ultrasonography in dairy cows. Anim Sci J. 91（1）.（2020）
3. Rapid determination of pathogens in mastitic milk of dairy cows using Gram staining. J Vet Med Sci. in press.（2022）

伴侶動物、家畜、野生動物、動物園動物などを対象として、人間と動物の共生の観点から動物の福祉（アニマルウェルフェア）の向上を目指したフィールド研究を行っている。

My research aims for the improvement of animal welfare, especially the welfare of free-roaming cats, from the view point of the symbiotic relationships between humans and animals.

keywords：Animal Welfare, Human-Animal Relationships, Free-roaming cats

1. Health status of 'community cats' living in the tourist area of the old town in Onomichi City, Japan. J Appl Anim Welf Sci 25: 338-354.（2022）
2. The effect of communal litter box provision on the defecation behavior of free-roaming cats in old-town Onomichi, Japan. Appl Anim Behav Sci 224: 104938.（2020）
3. Three-year route census study on welfare status of free-roaming cats in old-town Onomichi, Japan. J Appl Anim Welf Sci 21: 203-210.（2018）

The systematics, moult and reproductive physiology, ecology of parasitic crustaceans（especially Isopods and Copepods）infesting the marine fauna including fishes, crustaceans and other invertebrates. Defined the protandric hermaphroditism in parasitic cymothoids, successfully tracked the lifecycle of cymothoids.

keywords：Parasitic Crustaceans, Cymothoids, Copepods, Ecology, Taxonomy & Systematics, Life cycle, Physiology

1. Review on the global distribution and hosts of the external fish parasitic isopod genus Renocila Miers, 1880,（Crustacea: Cymothoidae）, with the description of a new species from Andaman Islands, India, and notes on new host record of Renocila bijui Aneesh & Bruce 2020.
   J. Nat. Hist. 55:43_44, 2761_2785（2022）
2. A taxonomic review of the buccal-attaching fish parasite genus Lobothorax Bleeker, 1857 （Crustacea: Isopoda: Cymothoidae）with description of a new species from southwestern India. Zool. Stud. 60:13, 1-13（2021）
3. Polychaete worm- a passive carrier for Enterocytozoon hepatopenaei in shrimp. Aquaculture, 545: 737187: 1_13（2021）