Accession Number : AD0720022

Title :   Feeding in Rhodnius Prolixus: Responses to Artificial Diets as Revealed by Changes in Electrical Resistance,

Corporate Author : TORONTO UNIV (ONTARIO) DEPT OF ZOOLOGY

Personal Author(s) : Smith,J. J. B. ; Friend,W. G.

Report Date : 13 MAR 1970

Pagination or Media Count : 13

Abstract : Feeding activity was monitored in Rhodnius prolixus by recording changes in electrical resistance between an electrode implanted in the haemolymph of the thorax and a second electrode in an artificial diet. Animals gorging on diets containing .001 M adenosine triphosphate in 0.15 M sodium chloride gave electrical records with two distinct phases. The initial phase, consisting of a continuous high resistance interrupted by transient periods of low resistance, is correlated with maxillary probing and sampling activity. The second phase was characterized by regular 'spikes' associated with activity of the pharyngeal pump. When ATP was omitted from the diet, only an extended initial phase was observed. Resistance changes in insects feeding on a rabbit were similar to those in animals feeding on the ATP diet. (Author)

Descriptors :   (*HEMIPTERA, DIET), ADENOSINE PHOSPHATES, SODIUM CHLORIDE, NUTRITION, BEHAVIOR, CULICIDAE, ELECTRICAL RESISTANCE, CANADA

Subject Categories : Biology

Distribution Statement : APPROVED FOR PUBLIC RELEASE