@article {Krawchuk:1997xe,
	title = {Observations of a possible cleaning symbiosis between Painted Turtles, Chrysemys picta, and Snapping Turtles, Chelydra serpentina, in central Ontario},
	journal = {Canadian Field-Naturalist},
	volume = {111},
	year = {1997},
	pages = {315-317},
	publisher = {OTTAWA FIELD-NATURALISTS CLUB},
	address = {PO BOX 35069, WESTGATE PO, OTTAWA ON K1Z 1A2, CANADA},
	abstract = {Painted Turtles (Chrysemys picta) were observed removing chlorophytic algae and leeches (Placobdella spp.) from Snapping Turtles (Chelydra serpentina) in a pond in central Ontario. We propose that a facultative mutualistic association exists between the two species in that the Painted Turtles derive a nutritional benefit from the leeches and algae and the Snapping Turtles benefit by having parasites removed. This may be the first reported instance of a cleaning symbiosis between species of reptiles.},
	keywords = {Chelydra serpentina, Chrysemys picta, cleaning symbiosis, leech, mutualism, Painted Turtle, Placobdella parasitica, Snapping Turtle},
	author = {Krawchuk, MA and Koper, N and Brooks, RJ}
}
