Haematological Effects of Nickel Toxicity on a Fresh Water Teleost, Colisa fasciatus

Abstract

Colisa fasciatius, a freshwater teleost, were exposed for 90 hrs to 45 p.p.m. nickel sulphate under static test conditions. The treatment resulted in leucopenia due to reduction in the number of small lymphocytes and polycythemia with concomitant increases in the haematocrit and haemoglobin values, and in retardation of the erythrocyte sedimentation rate of the moribund fish. No differences in total thrombocyte count, clotting time, and hepatosomatic index were found between the control and the treated fish. Lymphopenia and erythrocytosis may be used in presumptive monitoring nickel toxicity in fish.

Effects of some indigenous plant seed extracts on the Haematology of a predatory fish Singhi Heteropneustes fossilis (Bloch)

“…The RBC and WBC counts, haemoglobin content, PCV, MCV and MCH values of blood of treated fishes decreased with all of the extracts which was proved by t-test which indicated that these five plant toxicants had haemolytic properties. Similar result was observed by Bhatt and Farswan (1992) Agrawal et al (1979), Srivastava and Agrawal (1979), Goel and Gupta (1985) and Nasiruddin et al (2002) had reported similar decrease in mean values of RBC, WBC, Hb content and PCV values in Zinc, Nickel, Chromium, C. tora and A. lebbeck seed extract treated fishes but increase in the MCV and MCH values.…”

“…The changes in the characteristics of blood cells are important diagnostic indicators (Blaxhall 1972) of environmental stress on fish. Information about the effects of toxicants on fish blood are available from the studies of Srivastava and Agarwal (1979), Agrawal et al (1979Agrawal et al ( , 1985, Pandey et al (1981), Goel and Gupta (1985), Dheer et al (1986), Sen et al (1992), Wepner et al (1992), Allen (1993), Vosyliene (1996Vosyliene ( , 1999, Hymavathi and Rao (2000) and Ashraf et al (2003). However, only a few works have been carried out on the effects of plant extracts in fish haematology.…”

Effects of different artificial photoperiods and temperatures on haematological parameters of rainbow trout (Oncorhynchus mykiss)

“…The drop in total number of leukocytes (McLeay and Gordon 1977;Wedemeyer et al 1983;Wedemeyer et al 1990) as well as monocytopenia, lymphopenia, and necrophilia (McLeay 1975;Johanson-Sjobeck 1978;Agrawal et al 1979;Pulsford et al 1994) are common consequences of acute stress in fish. Langston et al (2002) reported that temperatures above the tolerance range diminish total leukocyte numbers in halibut (Hippoglossus hipoglossus L.) and Engelsma et al (2003) and Pettersen et al (2005) showed that thermal shock diminishes the number of B lymphocytes and increases granulocytes in Cyprinus carpio and Salmo salar, respectively, coinciding with some results of the present investigation.…”

Impact of Heavy Metal Toxicity on Hematology and Glycogen Status of Fish: A Review

“…The treatment resulted in leucopenia due to reduction in the number of small lymphocytes and polycythemia with concomitant increase in the Hct and Hb values, and in retardation of the ESR of the fish. No differences in total thrombocyte count and clotting time were found between the control and the treated fish [16]. The effect of Ni on Tilapia nilotica showed elevated RBC count, Hb and PCV along with leucopenia and lymphopenia [22].…”

“…Hematological indices like hemoglobin (Hb) content, total red blood cell count (tRBC), total white blood cell (tWBC) count/leucocyte count (TLC), hematocrit (Hct)/packed cell volume (PCV), mean corpuscular hemoglobin (MCH), mean corpuscular hemoglobin concentration (MCHC), mean corpuscular volume (MCV) may be changed in fish after exposure to heavy metals. Agrawal et al [16] reported that metals are known to induce anemia in fish. Anemia might be one of the earliest indications of metal toxicity.…”