An evaluation on host discrimination and superparasitism in Trissolcus semistriatus (Nees, 1834) (Hymenoptera: Scelionidae), egg parasitoid of Eurygaster integricepsPut., 1881 (Hemiptera: Scutelleridae)
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Dosyalar
Tarih
2018
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Entomological Soc Turkey, Ege Univ
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Trissolcus semistriatus (Nees, 1834) (Hymenoptera: Scelionidae) is the most common and important egg parasitoid of Eurygaster integriceps Put., 1881 (Hemiptera: Scutelleridae). This study was conducted to determine discrimination E. integriceps eggs parasitized by either self or a conspecific female of T. semistriatus in choice and no-choice tests, and to establish effect of adult parasitoid density and host density on parasitism in the laboratory in 2016. Female parasitoids did not superparasitize self-parasitized host eggs. However, superparasitism of 18% (significantly lower than the 81% parasitism rate) of the eggs parasitized by another female occurred within 1 h of first parasitism. Superparasitism was significantly lower at 1% in no-choice tests than the 23% recorded in choice tests within 24 h of first parasitism. Parasitism significantly decreased with increasing host egg number, but parasitism did not change with increasing parasitoid density. Therefore, it is concluded that T. semistriatus can discriminate between parasitized and unparasitized host eggs, with superparasitism infrequent when females encounter preparasitized host eggs within 48 h of first parasitism.
Açıklama
Anahtar Kelimeler
Eurygaster integriceps, host discrimination, intraspecific competition, parasitism, Trissolcus semistriatus, Adaptive Superparasitism, Solitary Parasitoids, Biological-Control, Telenomus-Podisi, Nezara-Viridula, Time Allocation, Heteroptera, Behavior, Patch
Kaynak
Turkiye Entomoloji Dergisi-Turkish Journal of Entomology
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
42
Sayı
4
