societies & organization
Associate Editor of Journal of Molluscan Studies
Since 2014

Board member of the Humboldt Club Nederland (www.humboldt-club.nl/)
Since 2014

Member of Peerage of Science
Since 2012

Vice-president of the International Society of Invertebrate Reproduction & Development (www.isird.nl)
Since 2010
(Web master since 2005)

Chairman of the Jury of the Dutch Zoology Prize of the Royal Dutch Zoological Society (www.kndv.nl)
2010-2012
(Jury member since 2009)

Co-organizer, with Kurt Jordaens of the symposium "Reproduction and mating systems in hermaphroditic molluscs" at the World Congress of Malacology, Phuket (Thailand)
2010

Co-organizer, with Jeroen Hoffer of the "Simultaneously Hermaphroditic Animal Meeting" (a.k.a. SHAM workshop) in Amsterdam (The Netherlands)
2010

Editorial board member of Invertebrate Reproduction & Development
Since 2009

Organizer of the annual meeting of the Netherlands Society of Behavioural Biology (NVG, Nederlandse Vereniging van Gedragsbiologie) in Dalfsen (The Netherlands)
2007-2009

Board member and webmaster of the Netherlands Society of Behavioural Biology (NVG, Nederlandse Vereniging van Gedragsbiologie)
2007-2009

Organizer of the symposium "Sexual Conflict" for the presentation of the Dutch Zoology Prize 2008 of the Koninklijke Nederlandse Dierkundige Vereniging (KNDV, Royal Dutch Zoological Society) in Amsterdam (The Netherlands)
2008

Co-organizer of the 14th Benelux Congress of Zoology, Amsterdam (The Netherlands)
2007

Organizer, together with Ronald Chase, of session "Sexual Selection" at the World Congress of Malacology, Antwerp (Belgium)
2007

Member of the Scientific Committee of the 13th Benelux Congress of Zoology, Leuven (Belgium)
2006

Organizer of session "Animal Behaviour" at the 12th Benelux Congress of Zoology, Wageningen (The Netherlands)
2005

Webmaster and Member of the Scientific Committee of the 12th Benelux Congress of Zoology, Wageningen (The Netherlands)
2005

Member of the Scientific board of Bionieuws (the official journal of the Netherlands Institute of Biology (NIBI)
2003-2008

Webmaster and 2nd treasurer of the Koninklijke Nederlandse Dierkundige Vereniging/Royal Dutch Zoological Society (KNDV)
2003 - 2009

Webmaster and Member of the Scientific Committee of the 10th Benelux Congress of Zoology
2003

Member of the Scientific Committee of the 1st European Conference on Behavioural Biology
2002