What is synovigenic wasp?
Synovigenic parasitoids generally are idiobionts and attack primarily host eggs and pupae. They are longer lived than are proovigenic species and produce eggs throughout their adult lives. To sustain oogenesis the females of many synovigenic species require additional nutrient.
What is proovigenic?
Proovigenic insects mature all their eggs prior to emergence and are short lived, providing a unique opportunity to quantify their lifetime investments in the different functions.
What are parasitoids types?
There are two general categories of parasitoids: endoparasitoids, which hatch within the host from eggs or larvae laid there by an adult female, and then feed and develop inside the host; and ectoparasitoids, which are fastened to the outside of the host and feed through the host skin, sucking out body fluids.
What is the meaning Hyperparasite?
Definition of hyperparasite : a parasite that is parasitic upon another parasite.
What is facultative Arrhenotoky?
Facultative arrhenotoky: the ability of Hymenoptera females to control egg fertilization by allowing sperm egress from the spermatheca, thus giving them the ability to select the sex of the offspring.
What is Idiobiont parasitoid?
Idiobiont parasitoids are those that prevent further development of the host after initial parasitization; typically they attack a host life stage that is immobile (e.g., an egg or pupa; though often a larva as well), and almost without exception idiobiont parasitoids live outside the host (altered from Wikipedia– …
What order are parasitoids?
Taxonomic range. About 10% of described insects are parasitoids, in the orders Hymenoptera, Diptera, Coleoptera, Neuroptera, Lepidoptera, Strepsiptera, and Trichoptera. The majority are wasps within the Hymenoptera; most of the others are Dipteran flies.
What is the nature of parasitoids?
Parasitoids are a diverse group of insects that provide biological control of pests in your garden, greenhouses or crop fields. A parasitoid is an organism that spends its larval stage in or on another organism, also known as a host.
What is Hyperparasitism in parasitology?
Hyperparasitism—the parasitic habit of one species upon another parasitic species—has also attracted attention. Polyembryony, the development of many individuals (as many as 1,000) from a single egg, is an unusual phenomenon occurring in some members of the families Chalcididae and Proctotrupidae.
Are spiders insects?
This means that spiders are not classified as insects. Although spiders and insects are arthropods, insects only have 6 legs and are in the class Insecta. Another difference when identifying spiders is that they have 2 body parts whereas insects have 3 body parts.
What is the nervous system of a spider composed of?
The nervous system of both spiders and insects are composed of a brain and a ventral nerve cord. Both spiders and insects are unisexual animals, e. both sexes are separated.
What are the different types of venomous spiders?
These genera include species such as funnel-web spiders, orb-weaver spiders, sac spiders, wolf spiders, and hunting spiders. Some of the most frightening spiders are tarantulas in the Theraphosidae family. Many species of venomous spiders are black and red spiders. The most famous is the black widow spider that can cause a non-fatal nasty bite.
What is the difference between chewing bugs and spiders?
Chewing insects have mouthparts such as mandibles, maxilla, and labium. Sucking insects are called true bugs. Sponging insects secrete saliva on the solid food, and the solution is drawn up by the mouth. Both spiders and insects are invertebrates that belong to the phylum Arthropoda. Both spiders and insects are mainly terrestrial.