Hematology values of wild harbor porpoises (Phocoena phocaena) from the Bay of Fundy, Canada

Clinical hematology values were determined for 29 harbor porpoises (Phocoen a phocoena) released front herring weirs in the Bay of Fundy, Canada. Eryth rocyte values exhibited narrow ranges, but there was a high degree of indiv idual variability in counts of white blood cells,Total white cell counts ra nged from 2.6 to 15.5 X 10(9)/liter, with an overall mean of 6.5 +/- 2.7 X 10(9)/liter. There were significant differences among reproductive classes in mean values of total red blood cells, hematocrit (HCT), mean cell volume (MCV), mean cell hemoglobin (MCHC) and total monocyte count. Wild harbor p orpoises had fewer white blood cells, lower relative total number of neutro phils and lymphocytes, and higher percentages of monocytes and eosinophils than reported in the literature far captive porpoises. Compared to publishe d values for other odontocetes, the hemograms of harbor porpoises were most similar to those of Pacific white-sided dolphins (Lagenorhynchus acutus). These hematology data represent a baseline from free-ranging harbor porpois es that can be used as a reference for long-term monitoring of the health o f this population and as a tool for rehabilitation facilities.