Petefészektüszk

Petefészektüszk refers to a phenomenon observed in some species of parasitic wasps, specifically within the order Hymenoptera. It describes the appearance of wasp larvae or pupae within the developing eggs of their host organism, most commonly insects. This is a direct result of endoparasitism, where the wasp's eggs are laid inside the host's body, and the subsequent development occurs within the host's tissues, including its reproductive organs and developing gametes.

The term itself is a compound of two Hungarian words: "petefészek" meaning ovary and "tüszk" referring to a blister or gall-like structure. While not a true gall, the presence of the parasitic larva can induce changes in the host's tissues, leading to abnormal formations. This strategy allows the wasp to exploit the host's resources for nourishment and protection during its vulnerable larval and pupal stages. The developing host eggs, or even the mature eggs within the ovary, can become the primary food source for the parasitoid. This can lead to a variety of outcomes for the host, often resulting in sterilization or death before reproduction can occur. Understanding petefészektüszk is important in fields like entomology and pest control, as it sheds light on complex host-parasite interactions and the intricate life cycles of parasitoid wasps.