Study on the male fecundity of an alien invasive pest, cotton mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae)
By method of mixing different quantity of females with one male,the fecundity of cotton mealybug Phenacoccus solenopsis Tinsley male was studied in this paper.The results indicated that,the successful mating rates of 1 male with 1-7 females were 94.4％,91.2％,85.4％,80.7％,77.7％,69.5％,and 66.2％ respectively.The relationship between no.of ovipositing females and the sex ratios could be stimulated by the Logistic model,Ff =5.2159EXP (-2.5304EXP (-0.421739N)),and 1 male could mate with 4.5 females (up to 5.22) and make them inseminate.The total fecundity of females mated with 1 male varied from 358.8 to 1274.2,and its dynamic with sex ratios was presented as S type curve Ft =1524.589e-1.3922/N,and could reach the maximum of 1525.Fecundity per female appeared a peak at 427.6 when sex ration with 3 ∶ 1,and then went down to 266.5 at 6 ∶ 1.Sex ratio of offspring was from 1.13 to 1.86,and females in offspring was from 206.1 to 727.4,and its realtionship with sex ratios would be described by the firmula Fof =840.1124e-1.2599/N,and the biggest was 840.
NETL
NSTL
万方数据
维普
