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農学部 農学部門海洋生命科学領域 |
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助教 |
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研究室住所 |
〒889-2192 宮崎市学園木花台西1丁目1番地 |
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和田 葉子 (ワダ ヨウコ)
WADA Yoko
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学歴 【 表示 ／ 非表示 】
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奈良女子大学 大学院博士後期課程 人間文化研究科共生自然科学専攻
2013年4月 - 2016年3月
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奈良女子大学 大学院博士前期課程 人間文化研究科生物科学科
2011年4月 - 2013年3月
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奈良女子大学 理学部 生物科学科
2007年4月 - 2011年3月
論文 【 表示 ／ 非表示 】
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Wada Y., Noda T., Ida T.Y., Iwatani Y., Sato T.
Journal of Animal Ecology 2026年3月
担当区分：筆頭著者, 責任著者 掲載種別：研究論文（学術雑誌） 出版者・発行元：Journal of Animal Ecology
Predator–prey interactions have long been recognized as important selective forces in the evolution and maintenance of multiple traits in both predators and prey. Certain animal species leave information intentionally or unintentionally, in the form of urine, faeces, feeding traces and chemical trails, even after they have moved. This residual information, left behind by animals, has the potential to affect predation efficiency. However, information warfare—the use of information between predator and prey, in which predators exploit prey cues to increase predation efficiency, while prey exploit predator cues to reduce it—remains largely unexplored, especially in the context of residual information. Marine gastropods leave a mucus trail that contains individual information as they crawl. In this study, we investigated the existence of information warfare between the predator snail Reishia clavigera and the prey limpet Siphonaria sirius through mucus trails. We observed the responses of predators and prey to their respective mucus trails under laboratory conditions. The predators followed the prey's mucus trails. In contrast, the prey exhibited movements, such as looping, upon confrontation with the predator's mucus trails. The looping behaviour reduced the probability of the predator reaching the endpoint of the prey's mucus trail. These results suggest a potential strategy whereby predators exploit prey mucus trails for localization, along with a counter-strategy through which prey minimize the risk of detection. Our findings provide novel insights into how information shapes predator–prey interactions, indicating the potential existence of an information-induced arms race.
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Assessing the impact of successive marine heatwaves on the diversity of rocky intertidal communities 査読あり
Ishida K., Kanamori Y., Yao Y., Wada Y., Yamakita T., Noda T.
Journal of Sea Research 210 2026年3月
掲載種別：研究論文（学術雑誌） 出版者・発行元：Journal of Sea Research
In recent years, clarification of the impacts of marine heatwaves (MHWs) on marine ecosystems has become an important topic. However, most previous studies that have assessed impacts of MHWs have not adequately reduced stochasticity, which has led to insufficient assessment of the direct effects of MHWs. There are also few studies that evaluate the accumulative carryover effects; which occur when the effects of successive events accumulatively increase over time. In addition, many studies have examined the effects of MHWs on abundance, but relatively few on diversity. From 2010 to 2016, southeastern Hokkaido in northern Japan experienced successive MHWs. Here, we assessed the accumulative carryover effects and the impact of MHWs on diversity (species richness and abundance-weighted diversity indices) with reduced stochasticity for four major functional groups (macroalgae, sessile invertebrates, herbivorous mollusks, and carnivorous invertebrates) of rocky intertidal communities. Surveys were conducted before (2004–2009), during (2010–2016), and after (2017–2018) MHWs. We found that the accumulative carryover effects were not detected in diversity. The results demonstrate that MHWs are to lead to accumulative carryover effects on abundance than on diversity. We also found that the direct effects of MHWs on diversity (i.e., increase or decrease of diversity indices during and after MHWs) were different among the four functional groups. These results were due to differences in species composition within the functional groups, such as the proportion of warm water species and cold affinity species and the proportion of dominant species. Thus, multiple metrics should be quantified simultaneously when assessing impacts on MHWs.
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Ikemoto Mito, Wada Yoko, Hashimoto Koya, Fujita Hiroaki, Kyogoku Daisuke
Ecological Research 2025年7月
担当区分：筆頭著者, 責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Wiley
Community ecologists often consider their research approaches as either process-oriented or pattern-oriented, which has frequently sparked controversy over the superiority or inferiority of each approach. Here, we argue the ambiguity in the distinction between pattern- and process-oriented approaches by reviewing previous studies. We then highlight three factors—interest, methods, and significance—that influence researchers' perceptions and evaluation of research approaches. This examination reveals the subjectivity inherent in classifying studies. Furthermore, we emphasize the complementary nature of pattern- and process-oriented perspectives in understanding ecological communities. We advocate a scientific culture that embraces diverse research approaches and acknowledges the various levels of generality required to address complex ecological issues. Ultimately, fostering an environment where ecologists with diverse approaches and perspectives collaborate constructively, rather than compete antagonistically, is essential for advancing community ecology.
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Effects of adult and egg predators on hatching plasticity of the pulmonate limpet 査読あり
Wada Y., Iwasaki K., Yusa Y.
Oecologia 207 ( 6 ) 86 2025年6月
担当区分：筆頭著者, 責任著者 記述言語：英語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Oecologia
In response to predation threats during the embryonic period, prey from diverse taxonomic groups exhibit plasticity in their hatching timing. In theory, predators of adult prey, as well as predators of eggs or embryos, can influence hatching timing. Similarly, not only embryos but also parents of prey can regulate hatching timing. However, research on the influence of adult predators and adult prey on hatching timing in species with separate predators for adults and eggs remains limited. To the best of our knowledge, no study has investigated this phenomenon in marine invertebrates under natural conditions. In this study, we investigated the effects of life-stage-specific predators (i.e., adult and egg predators) on the hatching timing of the pulmonate limpet (Siphonaria sirius), which undergoes planktonic development on an intertidal rocky shore. The presence of adult predators before and after egg-laying did not affect the hatching timing. Furthermore, while the egg predators present before egg-laying did not influence hatching timing, those present after egg-laying accelerated it. The results indicate that embryos, rather than their parents, determine hatching timing in response to their own predation risk. This finding highlights a strategy in which organisms with planktonic development rely on embryonic plasticity to mitigate strong predation risks during the egg stage. To understand how predation risk shapes predator–prey dynamics, it is critical to identify how predators, specific to each life-history stage of prey (such as adult and egg), interact with prey at different life-history stages during key events like reproduction.
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Kyogoku D., Wada Y.
PLoS ONE 18 ( 10 October ) 2023年10月
掲載種別：研究論文（学術雑誌） 出版者・発行元：PLoS ONE
Scientific grant applications are subjected to scholarly peer review. Studies show that the success rates of grant applications are often higher for male than for female applicants, suggesting that gender bias is common in peer review. However, these findings mostly come from studies in Europe, North America and Australia. Here we report the analyses of gender-specific success rates of applications to the fellowships offered by Japan Society for the Promotion of Science (JSPS). Because we analyze the observational data (i.e., not experimental), our aim here is to describe the possible gender gaps in the success rates, rather than the examination of gender bias per se. Results show that the success rates are consistently higher for male applicants than for female applicants among five different fellowship categories. The gender gaps in the success rates varied significantly between research fields in some Fellowship categories. Furthermore, in some fellowship categories, the gender gaps were significantly associated with the representation of female applicants (both positive and negative correlations were found). Though the causes of the gender gaps are unknown, unintentional gender bias during the review process is suggested. Pre-application gender gaps may also be contributing to the gender gaps in success rates. At least some of the observed gender gaps were relatively small, which may be partly explicable by the designs of the review process. However, gender gaps or biases acting prior to the application, such as self-selection bias, may have reduced the superficial gender gaps in the success rates. Further investigations that control for the effects of covariates (e.g., scientific merits of each applicant, which were not accessible to us) and those of other funding agencies, especially of non-Western countries, are warranted.
講演・口頭発表等 【 表示 ／ 非表示 】
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壊れていたら使いたくないは本当？～ヤドカリの貝殻選択と壊れ具合～
永瀬一菜, 和田葉子
日本生態学会第73回全国大会 2026年3月14日
開催年月日： 2026年3月11日 - 2026年3月15日
会議種別：ポスター発表
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単純ではないガンガゼの対捕食者反応：野外観察からの示唆
長谷川百香, 和田葉子
日本生態学会第73回全国大会 2026年3月14日
開催年月日： 2026年3月11日 - 2026年3月15日
会議種別：ポスター発表
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這った後にも影響が？～貝の粘液が生態系にのこすもの～
宮本菜々子, 林雅弘, 佐藤拓哉, 和田葉子
日本生態学会第73回全国大会 2026年3月14日
開催年月日： 2026年3月11日 - 2026年3月15日
会議種別：ポスター発表
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ナマコの生物攪拌で何が起こる？潮間帯の生態系への影響
岩谷将文，和田葉子
第72回日本生態学会
開催年月日： 2025年3月16日 - 2025年3月18日
会議種別：ポスター発表
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トゲアシガニ集団の性比の偏り
鎌田祥徳，和田葉子
第72回日本生態学会
開催年月日： 2025年3月16日 - 2025年3月18日
会議種別：ポスター発表
科研費（文科省・学振・厚労省）獲得実績 【 表示 ／ 非表示 】
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人新世における生態系変化とその予測可能性の評価：岩礁潮間帯での25年実証研究
研究課題/領域番号：23K27237 2024年04月 - 2028年03月
独立行政法人日本学術振興会 科学研究費基金 基盤研究(B)
担当区分：研究分担者
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貝類粘液情報から解明する群集構造と動態
研究課題/領域番号：24K18192 2024年04月 - 2027年03月
独立行政法人日本学術振興会 科学研究費基金 若手研究
担当区分：研究代表者
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人新世における生態系変化とその予測可能性の評価：岩礁潮間帯での25年実証研究
研究課題/領域番号：23H02546 2023年04月 - 2028年03月
独立行政法人日本学術振興会 科学研究費補助金 基盤研究(B)
担当区分：研究分担者
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貝類粘液で解き明かす岩礁潮間帯群集の構造と動態
研究課題/領域番号：20K15874 2020年04月 - 2025年03月
独立行政法人日本学術振興会 科学研究費基金 若手研究
担当区分：研究代表者
研究・技術シーズ 【 表示 ／ 非表示 】
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ホームページ： 和田研究室 宮崎大学農学部海洋生物環境学科 行動・生態学
技術相談に応じられる関連分野：生物間相互作用の解析（捕食・被食・間接効果）
野外生態調査（分布・群集構造の評価）
行動解析（移動・探索・回避行動の定量化）
生物由来シグナル（化学・物理情報）の評価
生態系影響評価（環境変化・攪乱の影響予測）メッセージ：生物が残す「見えない情報」を活用した新たな生態系評価手法の提案
粘液などの生物由来シグナルを基盤とした行動解析・環境評価への応用
生物間相互作用の可視化による環境変化の新規指標の開発
