Superparasitism and host discrimination byEphedrus cerasicola [Hym.: Aphidiidae], an aphidiid parasitoid ofMyzus persicae [Hom.: Aphididae]

@article{Hofsvang1983SuperparasitismAH,
  title={Superparasitism and host discrimination byEphedrus cerasicola [Hym.: Aphidiidae], an aphidiid parasitoid ofMyzus persicae [Hom.: Aphididae]},
  author={Trond Hofsvang and Eline Benestad H{\aa}gvar},
  journal={Entomophaga},
  year={1983},
  volume={28},
  pages={379-386}
}
Myzus persicae (Sulzer) at different densities (1 to 120 aphids) on a paprika plant in a 1.8 dm3 cage were exposed at 21°C to single females of the parasitoidEphedrus cerasicola Stary. Three different exposure periods were used: 1 hr, 6 hrs, 24 hrs. The aphids were dissected 6 days after parasitization.Superparasitism was measured as number of hosts superparasitized and number of parasitoid larvae per aphid. It attained a maximum around host density=5 and decreased with increasing host density… 

Oviposition behaviour ofEphedrus cerasicola [Hym.: Aphidiidae] parasitizing different instars of its aphid host

The parasitoidEphedrus cerasicola Starý oviposited in all 4 nymphal instars and in newly moulted adults ofMyzus persicae (Sulzer). The different host categories were offered with no choice. The

Functional responses to prey density ofEphedrus cerasicola [Hym.: Aphidiidae], an aphidiid parasitoid ofMyzus persicae [Hom.: Aphididae]

The functional responses of the parasitoidEphedrus cerasicola Starý parasitizingMyzus persicae (Sulzer) on a paprika plant, were studied for single females at different host densities during 3 different time periods (1 hr, 6 hrs, 24 hrs) at 21 °C.

Intraspecific competition among first instars of the parasitic wasp Biosteres longicaudatus

Females of the solitary endoparasitic wasp Biosteres longicaudatus sometimes deposit >1 egg (superparasitism) in each larva of the Caribbean fruit fly host, Anastrepha suspensa, and the mechanism by which supernumaries are eliminated was investigated by indirect, in vivo and direct, in vitro methods.

In vitro rearing ofLysiphlebus fabarum [Hym.: Braconidae]

In vitro rearing of the aphid endoparasitoid Lysiphlebus fabarum (Marshall) (Hymenoptera, Braconidae) was attempted, but only 2 out of the 48 tested in the 3 substrates became adults.

Behavioral and Ovipositional Response of Diaeretiella rapae (Hymenoptera: Braconidae) to Rhopalosiphum padi and Brevicoryne brassicae in Winter Wheat and Winter Canola

Results suggest that D. rapae faces challenges to maintain significant populations in the wheat/canola landscape of the Southern Great Plains, especially in years when canola is not locally present.

Fecundity and intrinsic rate of increase of the aphid parasitoid Ephedrus cerasicola Starý (Hym., Aphidiidae)

Species within the genus Ephedrus seem to have a very high fecundity compared with other genera of Aphidiidae.

Competition between Gonatocerus ashmeadi and G. triguttatus for glassy winged sharpshooter (Homalodisca coagulata) egg masses

Results illustrate the importance of experimental design in the assessment of competitive superiority between two species of parasitoids and the complexity of competitive behavior when designing pre-introduction laboratory tests to determine a priori which natural enemy from several candidate species is likely to be the most effective agent at controlling the target.

Effect of maternal age on primary and secondary sex ratios in the ectoparasitoid wasp Pachycrepoideus vindemmiae

The application of microsatellites helped explore and improve the understanding of the primary sex ratio and self‐superparasitism in this ectoparasitoid species.

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Functional responses to prey density ofEphedrus cerasicola [Hym.: Aphidiidae], an aphidiid parasitoid ofMyzus persicae [Hom.: Aphididae]

The functional responses of the parasitoidEphedrus cerasicola Starý parasitizingMyzus persicae (Sulzer) on a paprika plant, were studied for single females at different host densities during 3 different time periods (1 hr, 6 hrs, 24 hrs) at 21 °C.

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A biological study of the parasites of aphids was begun early in the summer of 1920, after many observations during an outbreak of Aphis gossypii Glov. on cotton in North Carolina had demonstrated

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