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1 August 2016 Egg sac parasitism: how important are parasitoids in the range expansion of the wasp spider Argiope bruennichi?
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Abstract

During recent decades, the wasp spider, Argiope bruennichi (Scopoli, 1772), has expanded relatively quickly towards north Europe. As a consequence of its spreading, it is newly exposed to various factors of selection. We studied the impact of egg sac parasitoids on the mortality of A. bruennichi in three regions differing in climate conditions and time of settling by this spider. Parasitism of wasp spider egg sacs was relatively low (0–3.9%) and no significant differences between studied regions were found. One primary parasitoid, Tromatobia ornata, was reared; in approximately 60% of these parasitized cocoons, the entire content of the egg sac was destroyed.

Wioletta Wawer and Agata Kostro-Ambroziak "Egg sac parasitism: how important are parasitoids in the range expansion of the wasp spider Argiope bruennichi?," The Journal of Arachnology 44(2), 247-250, (1 August 2016). https://doi.org/10.1636/P15-65
Received: 9 September 2015; Published: 1 August 2016
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