Parker made the switch at the end of January, said Louis Scattaglia, managing partner at Scattaglia Growers & Shippers, Traver, Calif.
Parker was not immediately available for comment. Rivermaid Trading's products include pears, cherries and asparagus.
Prior to joining Scattaglia, he was director of marketing at Dinuba, Calif.-based Fruit Patch Sales Co. From 1988 to 2003, he was director of merchandising for the California Tree Fruit Agreement.
Earlier in his career, Parker was packinghouse manager and Northern California regional manager for Blue Anchor Inc., Loomis, Calif., where he spent 13 years.
Other industry roles included a one-year stint as chairman of the Produce for Better Health Foundation in 2005 and 2006. Parker was a founding member of the California 5 a Day steering committee and served as its chairman for nine years.
Scattaglia Growers & Shippers is weighing options for a successor, Scattaglia said Feb. 8.