Haematological characteristics associated with parasitism in bream, Abramis brama orientalis

Abstract

A parasitological investigation was done on 175 specimens. Infections of A. brama orientalis were analyzed according to the age and sex. The fish also were examined for evaluation changes of haematological parameters in relation to parasitic infection. Four parasites were found, including-Caryophyllaeus laticeps and Ligula intestinalis (Cestoda), Diplostomum spathaceum (Platyhelminthes) and Trichodina sp. (Ciliophora). Among identified parasites maximum prevalence and mean intensity were related to Ligula intestinalis and Caryophyllaeus laticeps respectively. The values of prevalence and mean intensity showed significant differences among ages. Our results revealed prevalence, mean intensity and abundance had not significant difference between males and females. Parasite infection provoked reduction (P \ 0.05) in haematocrit, mean cell volume and lymphocyte. On the other hand, significant increase (P \ 0.05) in white blood cell (WBC), mean cell haemoglobin concentration and neutrophil in blood of infected fish was observed. Significant differences were detected for the WBC, lymphocyte and neutrophil (infected versus uninfected by Trichodina sp., Diplostomum spathaceum and Caryophyllaeus laticeps). In addition to WBC and lymphocytes, significant change was observed for the haemoglobin (Hb) (infected versus uninfected by Ligula intestinalis).

Haematological response of snow barbell, Schizothorax plagiostomus Heckel, naturally infected with a new Trypanosoma species

“…These cells orchestrate the initial line of defense against pathogens (Stoskopf 1993). It is well recognized that leukocyte cells are normally lower in healthy fish while, under stress (due to infection), the number of cells increases and hence, WBC count can be used as a significant indicator of health status in fish (Roberts 1978;Hayatbakhsh et al 2013). In the present study, the total leucocyte count showed a significant increase in the infected fishes, which has also been reported by Joshi and Tandon (1980); Gupta and Gupta (1985) in Trypanosoma infected fishes.…”

Histopathological changes induced by the digenean intestinal parasite Masenia nkomatiensis Dumbo, Dos Santos, & Avenant‐Oldewage, 2019 of the catfish Clarias gariepinus (Burchell) from Incomati Basin, Mozambique

“…No significant difference in lymphocyte number was recorded between uninfected and infected fish, and it seems likely that the maseniid parasite did not stimulate lymphocytosis as reported by Movahed, Khara, Ahmadnezhad, and Sayadboorani (). However, Tavares‐Dias, Moraes, and Martins (), Hayatbakhsh et al () and Fallah, Khara, Rohi, and Sayadborani () reported an increased level of lymphocytes in fish with concurrent infections with helminths and protozoans. Similarly, the haematocrit value showed no significant difference between infected and uninfected fish corroborating with Ranzani‐Paiva, Ishikawa, Campos, and Eiras (), Azevedo, Martins, Bozzo, and Moraes (), Tavares‐Dias et al () and Fallah et al (), while Hayatbakhsh et al (), Panjvini, Abarghuei, Khara, and Parashkoh () and Restiannasab, Hemmatzadeh, Khara, and Saljoghi () reported a low level in helminth‐infected fish.…”

“…However, Tavares‐Dias, Moraes, and Martins (), Hayatbakhsh et al () and Fallah, Khara, Rohi, and Sayadborani () reported an increased level of lymphocytes in fish with concurrent infections with helminths and protozoans. Similarly, the haematocrit value showed no significant difference between infected and uninfected fish corroborating with Ranzani‐Paiva, Ishikawa, Campos, and Eiras (), Azevedo, Martins, Bozzo, and Moraes (), Tavares‐Dias et al () and Fallah et al (), while Hayatbakhsh et al (), Panjvini, Abarghuei, Khara, and Parashkoh () and Restiannasab, Hemmatzadeh, Khara, and Saljoghi () reported a low level in helminth‐infected fish. For leucocrit, insignificant differences indicate the absence of cellular immunity relating to maseniid infection, similar to the observation made for Rutilus rutilus infected with Rhipidocotyle fennica (Jeney, Valtonen, Jeney, & Jokinen, ), while an increased leucocrit value was reported in fishes infected by trematodes (Khurshid & Ahmad, ; Restiannasab et al, ; Shah, Parveen, Mir, Sarwar, & Yousuf, ).…”

Sexual and age characteristics of the parasitofauna of Abramis brama (Cypriniformes, Cyprinidae) of the Lower Irtysh (Russia)

“…Recently, the interest of scientists to determining presence of dependence between the infestation with different species of parasites and the sex and age of the host has increased (Lizama et al, 2006;Tadiri et al, 2016). The age structure and sex of fish have an effect on change in distribution of parasites in ichthyocenoses, where differences in preferences in feeding and living indicate non-uniformity of trophic behaviour, which significantly contributes to the usually observed aggregation of helminths in hosts in natural conditions (Duneau & Ebert, 2012;Hayatbakhsh et al, 2014;Tadiri et al, 2016). During their research Rahman & Saidin (2011) and Ibrahim (2012) determined the highest number of parasitic species and their intensity in females compared with males.…”

“…Also, Ranzani-Paiva et al (1997) in their study reported that males of Mugil platanus had a higher percentage of infection with parasitic species than females. Hayatbakhsh et al (2014) determined the broadest distribution, average intensity and abundance of parasites in A. brama orientalis at the age of 5 years, compared with other age groups. A significant difference was observed in the composition of parasitofauna between males and females, though the authors mentioned that the differences were not statistically significant, male fish were more heavily infested than females (Hayatbakhsh et al, 2014).…”