Food preference in various cockroach species under laboratory conditions

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  • 9種ゴキブリの餌材嗜好性
  • 9シュ ゴキブリ ノ ジザイシコウセイ

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Food preference in nine cockroach species (the German cockroach, Blattella germanica, the smoky brown cockroach, Periplaneta fuliginosa, the Japanese cockroach, P. japonica, the brown cockroach, P. brunnea the American cockroach, P. americana, the Satsuma cockroach, Opistoplatia orientaris, the lobster cockroach, Nauphoeta cinerea, the blaberus cockroach, Blaberus trapezoideus and the Madagascar cockroach, Gromphadorrhina portentosa) was studied under laboratory conditions. Adults of each species were released for 72 hours in an arena and fed seven different kinds of powdered food materials, rice bran, mouse food, wheat flour, dry yeast, dried sardine, dried Shiitake and green tea. Food materials were set around the circumference at regular intervals in a small plastic cup. The consumption rate of each food was checked. Six species (German, American, Brown, Lobster, Blaberus and Madagascar) preferred the rice bran most. However, rice bran consumption by the Japanese cockroach was only 10% of the total, and this species accounted for 44.8% of the total dry yeast consumption. Mouse food was selected most by the smoky brown and the Satsuma. Dried Shiitake was selected by only the Madagascar (14.5%), and green tea was consumed by the Japanese (15.3%) while other species consumed only a little. Dry yeast was consumed moderately by the American (25.7%), the brown (21.5%) and the smoky brown (19.7%). The feeding patterns of the American and the brown were very similar. The large cockroaches consumed more food materials than did smaller ones.

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