Allegations of fabricated data have prompted a university investigation and some soul-searching.
A complex web is unravelling in the field of spider research. On 5 February, McMaster University in Hamilton, Canada, confirmed that it was investigating allegations that behavioural ecologist Jonathan Pruitt fabricated data in at least 17 papers on which he was a co-author.
An earlier report of a single retraction leads to an avalanche and research misconduct investigations.
Pruitt, who is reportedly doing field research in Australia and the South Pacific, told Science last week that he had not fabricated or manipulated data in any way. He did not respond to multiple requests from Nature for comment on the mounting list of retractions, or the accusation that he fabricated data.