実験条件下でのクロゴキブリの糞食, 死骸食並びに共食いの検証

概要

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The longevity of the smoky-brown cockroach, Periplaneta fuliginosa (Serville) which fed on their own feces or dried carcasses was remarkably short compared to those fed on mouse foods under the laboratory condition. The cockroaches were reluctant to feed on their feces or dried carcasses. When two kinds of food materials were placed separately in a plastic arena, the cockroaches preferred mouse foods to feces or carcasses, and no remarkable difference was found in consumptions between feces and carcasses. When dried feces, dried carcasses (both of the cockroaches), and mouse food in each of three small aluminum cups were placed side by side in the plastic arena, the cockroaches ate the mouse food most, followed by dried carcasses, and they did not eat their own feces. Comparing food preference among four kinds of insect's feces : the smoky-brown cockroach, the silkworm, Bombyx mori Linne the common cutworm, Spodoptera litira Fabricius and the drug store beetle, Stegobium Paniceum Fabricius the cockroaches selected silkworm feces most, then the drug store beetle's feces ; they did not consume their own feces or the feces of the common cutworm. In the case of ideal food absence, the cockroaches showed cannibalism. The results demonstrate that feces or dried carcasses of the cockroaches may not be suitable food for the smoky-brown cockroaches.
日本衛生動物学会の論文
2003-12-15