The flight ability of Oedaleus asiaticus and its relationship to population density

The flying ability of Oedaleus asiaticus which is a dominant locust species and its relationship with population density were studied in laboratory.The results of 12-hour continuous suspension flying test showed that O.asiaticus had relatively strong high-density population flying ability-the farthest accumulated flight distance was up to 15 km,accumulated flight time was more than 2 h.Different day-old adult individuals show significant difference,which 4 day-old adults after eclosion exhibited weaker flying ability,while the 13 day-old ones possessed the strongest flying ability,20 day-old showed a decreasing trend.Male and female individuals had no significant difference(P0.05).Low-density populations of adults did not have the long distance flying ability,each day-old adult accumulated flying distance and flying time were significantly shorter than those of same day-old high-density population individuals(P0.01).