Sex Pheromone Trap Catches of the Pearl Millet Stem Borer, Coniesta ignefuscalis Hampson (Lepidoptera: Pyralidae), in Relation to Weather Factor in Borno State, Nigeria.
Nig. J. Entomol. 23: 6 – 12 (2006)
ABSTRACT. Seasonal population patterns and the relationship between trap catches of the pearl millet stem borer, Coniesta ignefusalis (Hampson), and weather factors were investigated at three locations in Borno State in 1995 and 1996. Moth activity peaked thrice in 1995 and twice in 1996 at Maiduguri; twice in both years at Baga and once only in 1996 at Mallam-Fatori. Pheromone trap catches were significantly correlated with morning maximum air temperature at Baga in 1995; relative humidity and maximum air temperature at Maiduguri in 1995; maximum and minimum temperatures at Baga in 1996; and relative humidity and minimum air temperature at Mallam-Fatori in 1996. Thus morning relative humidity, maximum and minimum air temperatures appeared to be the key weather factors affecting flight activity of C. ignefusalis in the study area.