Comparative study of hematological parameters of snow trout Schizopyge plagiostomus and Schizopyge niger inhabiting two different habitats

Abstract

The aim of the present study is to compare the hematological parameters of two snow trout fish species, Schizopyge plagiostomus and Schizopyge niger, inhabiting two different habitats, to establish and compare baseline information about the hematological profile of the two species using standard methodology and light microscopy. Results showed significant (P < 0.05) differences in hematological parameters of the two species. Significantly higher hemoglobin (Hb), red blood cell count (RBC) and hematocrit (Hct) values were recorded in S. plagiostomus as compared to S. niger. Conversely, the values of thrombocyte count (TC), white blood cell count (WBC) and mean corpuscular volume (MCV) were higher in S. niger in comparison to S. plagiostomus. The erythrocyte dimensions of these two species were distinguished and characterized under light microscopy; different morphometric characteristics were observed, such as larger size and smaller number in S. niger as compared to S. plagiostomus. The variation in hematological parameters and morphometric characteristics of erythrocytes between the two species inhabiting different environments might be due to their divergent physiological activity level, movement, metabolic rate and feeding behavior. This study will provide essential tools for physiologists and pathologists in monitoring the health status of these fish species in particular and fish species in general.

Hematological and cytochemical characteristics of peripheral blood cells in the argus snakehead (Ophiocephalus argus Cantor)

“…The morphological characteristics of mature erythrocytes of O. argus were similar to those of other fish (Ahmed & Sheikh, 2020;Chen et al, 2019a;Negrete et al, 2010;Vázquez & Guerrero, 2007), which were usually oval in shape with an oval or long-oval nucleus. The size of erythrocytes in O. argus was smaller than in the Chinese sturgeon (Acipenser sinensis) and sisorid catfish (Glyptosternum maculatum), larger than in the Siamese fighting fish and cichlid fish, and similar to the piebald naked carp (Table 4).…”

Haematological and serum biochemical reference values of snow trout, Schizothorax labiatus habiting in river Sindh of Indian Himalayan region

“…Fish is also considered to be a best bio‐indicator species, as it plays a vital role in assaying the quality of habitat by responding quickly to different alterations in physico‐chemical characteristics of the surrounding medium in the water (Borkovic et al ., 2008; Das et al ., 2012). Knowledge of haematological and biochemical parameters is a valuable tool to determine the wellbeing of different fish species, as these parameters are closely associated with their response to varied biological and environmental factors (Ahmed & Sheikh, 2020; Fernandez & Mazon, 2003; Satheeshkumar et al ., 2011). Such studies play a vital part in understanding the association of blood characteristics with habitat and adaptability in connection with their environment, including various mechanisms of adaptation and processes of evolution (Fazio, 2019; Fazio et al ., 2012; Jan & Ahmed, 2020).…”

Investigation of genotoxicity, mutagenicity, and cytotoxicity in erythrocytes of Nile tilapia (Oreochromis niloticus) after fluoxetine exposure

“…The erythrocyte morphometry was performed according to Ahmed and Sheikh [47] with modification. One hundred erythrocyte measurements were randomly processed using ImageJ 1.52av software [34] per fish under a light microscope at a magnification of 100 × magnification (Olympus BX51).…”