Professor's nationwide career spanned a generation.
Dale Jackson was born in Great Stainton, Bishop Auckland, County Durham, May 20, 1932.
In the late 1950s he studied for a PhD in parasitic insects at the University of Durham, where he met his wife Shirley Anne Scotland, of Whitburn, Sunderland.
Shortly after they married in 1959 they moved to Ontario in Canada, where Mr Jackson taught biology at the University of Guelph.
They moved again, to the University of Akron, in Ohio, USA, in 1961, where Prof Jackson taught about parasitic insects until his retirement in 1995. He died last Friday.
He last visited Great Stainton, Bishop Auckland, with his wife two years ago. Last night she said: "He held great affection for the North of England and always enjoyed his visits home.
"He was a great father and grandfather and never complained about babysitting.
"He was dedicated to his research and his students and in the late 1970s even helped establish a university in Iranian Kurdistan."
Mr Jackson is survived by his daughter Heather Rebecca Kirschbaum 40, a buyer for an art gallery in Akron and his grandchildren Olivia Kirschbaum, five, and Alexandra Kirschbaum, six.