Uncovering behavior of long-dead insects

What can you learn from the 120 year-old body of a parasitoid wasp? Using material from museum collections, researchers writing in the open access journal BMC Evolutionary Biology report that they can tell how males wasps court their females, based on dead specimens.

Parasitoid are one of the most abundant groups of organisms on the planet. Their diversity makes it very hard to study behaviors across many species. Seraina Klopfstein from the Natural History Museum of Bern, Switzerland, and co-workers have shown that males of many species coil their antennae around those of their mates, either once or in a more complex double coil. This peculiar courtship behavior is determined by antennal structures that bring male antennal glands into intimate contact with the female's . The coiling behavior has evolved slowly and, where lost, has never re-evolved.

The researchers amputated the antennae from specimen wasps of 56 different species and transferred them from an solution into pure water. The change in viscosity between the two liquids caused the antennae, where possible, to curl and was also reproducible on species where fresh material was available. Speaking about the results, Klopfstein said: "Our method emphasizes the importance of natural history museum collections, even for areas of research that could never have been anticipated at the time those collections were built."


Explore further

Tiny UK parasitoid wasp discovered

More information: The evolution of antennal courtship in diplazontine parasitoid wasps (Hymenoptera, Ichneumonidae, Diplazontinae), Seraina Klopfstein, Donald L.J. Quicke and Christian Kropf, BMC Evolutionary Biology (in press), www.biomedcentral.com/bmcevolbiol/
Provided by BioMed Central
Citation: Uncovering behavior of long-dead insects (2010, July 19) retrieved 17 June 2019 from https://phys.org/news/2010-07-uncovering-behavior-long-dead-insects.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
0 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more