Respiration Responses of a Caenorhabditis sp. and Aphelenchus avenae to the Nematicide, 1,2-dibromoethane (EDB)

C. F. Marks


The respiration rate of third stage larvae of Caenorhabditis sp. exposed to 0.53 × 10[sup-]² M EDB was 120% greater than in untreated checks and was highest shortly after the exposure began. Similarly-treated third- and fourth-stage Aphelenchus avenae exhibited no marked respiratory response. Different responses of these animals to EDB probably reflect basic physiological differences between the nematodes. Key Words: A. avenae, Caenorhabditis sp., EDB, Nematicide, Respiration.

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