The differential leucocyte landscape of four teleosts: juvenile Oncorhynchus kisutch, Clupea pallasi, Culaea inconstans and Pimephales promelas

Abstract

The appearance and proportions of morphologically distinct leucocytes (monocytes, thrombocytes, lymphocytes and diverse forms of granulocytes) encountered in the blood of four teleost species: coho salmon Oncorhynchus kisutch, Pacific herring Clupea pallasi, brook stickleback Culaea inconstans and fathead minnow Pimephales promelas, are presented, along with examples of how water quality influenced their relative proportions. The results clearly show that relative leucocyte number responds significantly and differently to changes in water quality. The value of using differential white cell counting as a quick and inexpensive component of assaying immune system alterations is discussed. # 2004 The Fisheries Society of the British Isles

Comparative Hematological Values, Morphometric and Morphological Observation of the Blood Cell in Capture and Culture Asian Eel, Monopterus albus (Zuiew)

“…Quantity and quality of leucocyte cells, which are hematologic parameters, are generally used to determine immune reactions and disease. Moreover, changes in leucocytes also occur when fish are stressed and environmental quality is altered [2] . Sahan et al [3] used some hematological values as parameters to determine the effect of water pollution induced stress in European eel.…”

Fish health changes in Lake Okaro, New Zealand: effects of nutrient remediation, season or eutrophication?

“…The relative proportions of white blood cells changed between sampling periods, but did not differ between lake populations at each period. Both total and DWBC have been shown to respond to stress and changes in water quality (Tierney et al, 2004). In August, the tail end of the spawning season for this particular strain of rainbow trout, relatively fewer lymphocytes were observed in both trout populations, particularly Lake Okaro.…”

A comparison of hematology, plasma chemistry, and injuries in Hickory shad (Alosa mediocris) captured by electrofishing or angling during a spawning run

“…In teleosts, lymphocytes generally account for the majority of leukocytes in blood, and nonneutrophilic granulocytes are generally either absent or infrequent . Well‐described leukograms are not available for Hickory shad, and the types and relative frequencies of circulating leukocytes in other clupeid fish species have varied widely in previous reports . In Atlantic herring ( Clupea harengus harengus ), eosinophils were reported infrequently (< 4% of WBC), or not at all, and cells that were likely neutrophils were identified as heterophils .…”