title: [Ceratopogonidae (Diptera) of the Congolese Mayombe. I. Daily pattern of the biting activity of female Culicoides grahamii Austen, 1909].
abstract: Owing to appropriate sampling methods, the study of the daily pattern of biting of female "Culicoides grahamii Austen, 1909" was achieved in the Congolese Mayombe. It was discovered that this pattern was rhythmical in close connection with the sunrise and sunset. Many climatic parameters were simultaneously studied (temperature, hygrometry, brightness). This starting factor of this rhythmical pattern seems to be a brightness which agrees to a total shortwave radiation on the ground, equal or inferior to 25 cal x m-2 x h-1. It seems that the temperature does not play any role.
mesh_terms: D000818:Animals; D002519:Ceratopogonidae / Q000502:physiology*; D002940:Circadian Rhythm; D003223:Congo; D005260:Female; D006801:Humans; D007299:Insect Bites and Stings; D013696:Temperature
vernacular_title: Les Ceratopogonidae (Diptera) du Mayombe congolais. I--Rythme d'activité journalier des femelles de Culicoides grahamii Austen, 1909.