Mark E. Siddall is a Canadian biologist and former curator [1] at the American Museum of Natural History. Siddall has studied the evolution and systematics of blood parasites and leeches, and systematic theory [2] .[ citation needed ] Siddall was hired as an assistant curator at the American Museum of Natural History in July, 1999 [3] and worked there as a curator until September, 2020, when he was terminated for allegedly having violated the museum's policy prohibiting sexual relationships between staff and mentees. Siddall denied the claim. [1]
Siddall completed a Masters [4] and PhD [5] under the supervision of Sherwin S. Desser at the University of Toronto in 1991 and 1994, respectively. [6]
After completing his PhD, Siddall completed a postdoc at the Virginia Institute of Marine Science. [7] Subsequently, he was a fellow in the Michigan Society of Fellows from 1996-1999. [8] He also acted as treasurer of the Willi Hennig Society, publisher of the journal Cladistics . [9]
Siddall has worked and published on parasitic and other animals, including leeches, [10] jellyfish, [11] guinea worms, [12] and bed bugs. [13] [14]
He is author of the science book Poison: Sinister Species with Deadly Consequences. [15]
In 2016, Siddall, Jonathan Eisen, and others were involved in the Twitter controversy #ParsimonyGate. [9]
The American Museum of Natural History fired Siddall in September 2020 for alleged sexual harassment, citing museum policy that prohibits sexual relationships between staff and mentees under their academic supervision. [1] An outside law firm representing the museum's interests found that Siddall had "engaged in verbal, written, and physical conduct of a sexual nature that had the effect of unreasonably interfering with your academic performance." [1] Siddall denied that any sexual encounter ever took place, and claimed he was fired because "he had found a serious error" in a paper. [1]
Siddall studies phylogenetics and evolution. [10] Siddall has been described as "a staunch supporter of parsimony and a harsh critic of maximum likelihood approaches”, although "having mellowed a bit on that". [7]