クラフト紙,プラスチックフィルムならびにアーモンドに生じたゴキブリおよびハツカネズミの齧り跡の特徴

概要

論文の詳細を見る
Domestic cockroaches and mice often bite or nibble on food packages. Bite marks on paper, plastic bags or almonds were studied under laboratory conditions. Polyethylene film was torn off by bites of large cockroaches (Periplaneta fuliginosa, P. americana or P. brunnea) and resulted in crater-like holes or crevices on the surface. The German cockroach could not tear off plastic film. The vinylidene-polychloride films (wrap film) were also cut by all species, including B. germanica, but the edges of holes did not appear to be so raised as those of polyethylene film. The mice made small round bite holes on the surface of polyethylene films, but the edges were not raised up. They also fragmented the wrap films in small pieces. The large cockroaches brought together fibers of Kraft paper or Japanese paper (Washi). The German cockroach bit off saw-tooth patterns at the edges of the papers. However, no holes appeared on the surface. The mice gnawed off the paper. The large cockroaches nibbled on almonds and imprints of their mandibles were clearly visible where they nibbled. The German cockroach ate only the insides of rinds. The cockroach and mouse bite marks in almonds were not similar.
日本ペストロジー学会の論文
2007-04-30