Some Demographic Parameters of Lysiphlebus confusus, L. fabarum, and L. testaceipes (Hymenoptera: Braconidae: Aphidiinae)
Küçük Resim Yok
Tarih
2019
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Oxford Univ Press Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Lysiphlebus confusus Tremblay and Eady, L. fabarum (Marshall), and L. testaceipes (Cresson) (Hymenoptera: Braconidae: Aphidiinae) are important biological control agents for aphids. To select the appropriate biological control agent for a target pest, an understanding of the demographic parameters is essential. Therefore, a study was conducted to determine the effect of five temperatures, 12, 17, 22, 27, and 32 degrees C, at 60% RH and 5.0 Lux photoperiod of 16:8 (L:D) h, on the parasitism rate, development, and fecundity of these three parasitoids of Aphis gossypii Glover (Hemiptera: Aphididae). Only L. fabarum parasitized at 12 degrees C and the rate was low. None of the parasitoids was able to develop at 32 degrees C. Lysiphlebus testaceipes had the shortest developmental period at the other temperatures. Lysiphlebus confusus and L. fabarum had similar developmental times at 22 and 27 degrees C, with L. confusus completing its development faster at 17 degrees C. The mortality rate of the three parasitoids varied between 3 and 20% at 17, 22, and 27 degrees C, except for L. testaceipes which had about 53% mortality at 27 degrees C. Lysiphlebus testaceipes had the highest net reproductive rate at all temperatures for the 2.5 and 97.5% bootstrap CIs. Lysiphlebus fabarum had the highest intrinsic rate of increase at 22 degrees C and L. testaceipes had the highest at the other temperatures. The best temperatures for fecundity were 17 and 22 degrees C for L. testaceipes and 22 degrees C for the other species. Lysiphlebus testaceipes appeared to be the most suited biological control agent for A. gossypii in southern Turkey, but its intolerance to high temperature could prove problematic for its establishment and persistence in this region.
Açıklama
Anahtar Kelimeler
aphid, life table parameters, parasitism rate, parasitoids, temperature
Kaynak
Journal of Economic Entomology
WoS Q Değeri
Q1
Scopus Q Değeri
Cilt
112
Sayı
3
