カエル類は昆虫類にとって重要な天敵です。ニホンヒキガエル、ナガレヒキガエル、トノサマガエル、ダルマガエル、ツチガエル、ウシガエル、ヌマガエル、ニホンアマガエルなどを捕食者として、昆虫類（ゴミムシ類、ハネカクシ類、サシガメ類、ガムシ類、ハチ類、ハバチ類幼虫、チョウ幼虫）の被食防衛行動を調査してきました。
Publication
Sugiura, S. & Hayashi, M. (2025) Mimicry between adult rove beetles and assassin bug nymphs with unequal defenses: antagonistic or mutualistic? PeerJ, 13:e19942.
Sugiura, S. & Hayashi, M. (2025) Invasive predators can alter mimetic interactions between native insects. Biological Invasions, 27: 48.
Sugiura, S. & Hayashi, M. (2024) Defenses of whirligig beetles against native and invasive frogs. PeerJ, 12: e17214.
Sugiura, S. & Hayashi, M. (2023) Bombardiers and assassins: mimetic interactions between unequally defended insects. PeerJ, 11: e15380.
Sugiura, S. & Tsujii, M. (2022) Male wasp genitalia as an anti-predator defense. Current Biology, 32(24): R1336–R1337.
Sugiura, S. & Date, T. (2022) Bombardier beetles repel invasive bullfrogs. PeerJ, 10:e13805.
Sugiura, S. (2020) Active escape of prey from predator vent via the digestive tract. Current Biology, 30(15): R867–R868.
Sugiura, S. (2020) Predators as drivers of insect defenses. Entomological Science, 23(3): 316– 337 (invited review).
Sugiura, S. (2018) Anti-predator defences of a bombardier beetle: is bombing essential for successful escape from frogs? PeerJ, 6:e5942.
Sugiura, S. & Sato, T. (2018) Successful escape of bombardier beetles from predator digestive systems. Biology Letters, 14: 20170647.
Matsubara, S. & Sugiura, S. (2017) Chemical defence of turnip sawfly larvae against Japanese tree frogs. Journal of Asia-Pacific Entomology, 20: 225–227.