Hematological parameters associated with parasitism in pike, Esox lucius caught from Anzali wetland

Fallah, F Jamalzad; Khara, H; Rohi, Javad Daghigh; Sayadborani, Mohammad

doi:10.1007/s12639-013-0329-y

Cited by 14 publications

(10 citation statements)

References 11 publications

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“…MCV showed an increasing tendency but without any statistical differences in the Small treatment, but there were statistical differences in the Big treatment between 0 and 5 h after infestation, with an increase in MCV values over time. This is in agreement with data obtained for this index in parasitic infections [62]. The absence of MCH and MCHC is also in agreement with the previous data.…”

Section: Discussionsupporting

confidence: 94%

Influence of Age on Stress Responses of White Seabream to Amyloodiniosis

Moreira

Cordeiro-Silva

Barata

et al. 2019

Fishes

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Amyloodiniosis is a disease that represents a major bottleneck for semi-intensive aquaculture, especially in Southern Europe. The inefficacy of many of the treatments for this disease on marine fish produced in semi-intensive aquaculture has led to a new welfare approach to amyloodiniosis. There is already some knowledge of several welfare issues that lead to amyloodiniosis as well as the stress, physiological, and immunological responses to the parasite by the host, but no work is available about the influence of fish age on the progression of amyloodiniosis. The objective of this work was to determine if stress, hematological, and histopathological responses are age dependent. For that purpose, we determined the mortality rate, histopathological lesions, hematological indexes, and stress responses (cortisol, glucose, lactate, and total protein) in “Small” (total weight: 50 ± 5.1 g, age: 273 days after eclosion (DAE)) and “Big” (total weight: 101.3 ± 10.4 g, age: 571 DAE) white seabream (Diplodus sargus) subjected to an Amyloodinium ocellatum infestation (8000 dinospores mL−1) during a 24-h period. The results demonstrated a strong stress response to A. ocellatum, with marked differences in histopathological alterations, glucose levels, and some hematological indexes between the fish of the two treatments. This work elucidates the need to take in account the size and age of the fish in the development and establishment of adequate mitigating measures and treatment protocols for amyloodiniosis.

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Section: Discussionsupporting

confidence: 94%

Influence of Age on Stress Responses of White Seabream to Amyloodiniosis

Moreira

Cordeiro-Silva

Barata

et al. 2019

Fishes

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“…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.…”

Section: Discussionmentioning

confidence: 99%

“…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, ).…”

Section: Discussionmentioning

confidence: 99%

“…However, Tavares-Dias, Martins (2008), Hayatbakhsh et al (2014) andFallah, Khara, Rohi, and Sayadborani (2015) 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 un-infected fish corroborating with Ranzani-Paiva, Ishikawa, Campos, and Eiras (1997), Azevedo, Martins, Bozzo, and Moraes (2006), F I G U R E 3 Photomicrographs of the sections showing the host's immune response to Masenia nkomatiensis.…”

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confidence: 99%

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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

Dumbo

Avenant‐Oldewage

2019

Journal of Fish Diseases

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The intestines of 154 Clarias gariepinus were examined of which 29 were naturally infected with Masenia nkomatiensis, and of these, seven (intensity ranging from 8 to 231) were examined for pathology. Destruction of the epithelium covering the villi, detachment of epithelial cells and parts of villi were observed. Excessive mucus secretion occurred in the vicinity of the worm and catarrh was observed, indicative of an inflammatory response. The number of mucous and mast cells was higher at the attachment site than at an area 5,000 µm away and in uninfected individuals, suggesting that the parasite triggered a localized innate immune response. The number of neutrophils, basophils and lymphocytes in infected tissue was not significantly different from uninfected tissue confirming that no acquired immune response was produced against the maseniid. The caecae in the anterior part of the parasites' intestine consisted of convoluted epithelium forming invaginations or “crypts.” Contraction of the thick layer of circular muscle fibres of the caeca facilitates the movement of digested material. Observation of digested host cells and cell debris within the caecae provides further evidence that M. nkomatiensis is consuming host cells.

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“…Also it is found in fresh-water marine areas: in bays of the Baltic and Azov seas. In water bodies where no intensive fishing is done, pike can reach up to 180 cm in length (usually length of caught fish is up to 1 meter) and weigh up to 40 kg (usually up to 8 kg) (Crai, 1996). E. lucius lives in areas with slow flow, preferring to keep in thickets of aquatic vegetation.…”

Section: Introductionmentioning

confidence: 99%

Parasitofauna of pike Esox lucius of the Lower Tobol (Russia)

Liberman¹,

Voropaeva

Козлов³

2019

Biosys. divers.

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One of the predators of the ichthyofauna of the Lower Tobol is Esox lucius (Linnaeus, 1758) (Esociformes, Esocidae). The purpose of this work is to study the current state of the E. lucius parasite fauna in the lower reaches of the Tobol River. In the present study 47 individuals of the northern pike of different sex aged from 2+ to 8+ years were examined by the method of complete parasitological dissection. As a result of the research, 23 types of parasites were found in the pike. The largest number of species of parasitic organisms – 20 – were found in May, 12 were found in December and 11 in September. Of these, 10 species are specific to northern pike: Haemogregarina esoci (Nawrotzky, 1914), Chloromyxum esocinum (Dogiel, 1934), Myxidium lieberkuhni (Biitschli, 1882), Myxosoma anurum (Cohn, 1895), Henneguya psorospermica (Thelohan, 1995), Tetraonchus monenteron (Wagener, 1857), Gyrodactylus lucii (Kulakowskaja, 1951), Triaenophorus nodulosus (Pallas, 1781), Azygia lucii (Miiller, 1776), Raphidascaris acus (Bloch, 1779). For the first time an intraerythrocyte parasite – H. esoci – was found in pike in the Lower Tobol, the extensiveness of invasion was 18.7% in December, and 6.2% in May. Epistylis sp. and Trichodinella epizzotica parasitized on the surface of the body of fish only in May, whereas members of the genus Trichodina were found in winter and spring. In all seasons, parasitization by M. anurum and H. psorospermica was established on the gills. The greatest occurrence of spores of M. lieberkuhni and C. esocinum was observed in the spring. Myxosporidia parasitized in the kidneys and T. monenteron parasitized on the gills during all periods of the study (the latter with an extensivity of invasion of 100.0%). All examined fish are infected with T. nodulosus 100.0% of cases. In May, other types of cestodes were found: P. esocis and Dibothriocephalus latus. Three pike were infected with proteocephalis. The larval stage of diphyllobothriid was found in one fish in the liver and gonads in an amount of 139 individuals. In the pikes’ stomach, during all periods of the study, A. lucii was found in all the fish examined. In the autumn period of the study immature R. campanula were found in in the intestine of 4 fish specimens. The nematode R. acus was found in pike only in spring. This nematode was found in fish aged 4+–8+. In May, glochidia with a high intensity of invasion were found on fins, gill covers and gills of fish. E. sieboldi copepods were found on the gills; in May, one specimen was found in one pike and in September in 6 with AI of 0.7. Tetraonchus monenteron was a dominant species, in May its degree of dominance decreased with the greatest uniformity of species in this study period. Having considered the age dynamics of pike infection by various types of parasites, it was found that in the age group 4+–5+ the number of species of parasites was greatest (20), while in groups 2+–3+ and 6+–8+ it was 14. In the pike, the core parasitic fauna were M. anurum, H. psorospermica, T. monenteron, T. nodulosus, A. lucii. Seasonality has virtually no effect on the degree of infection with specific parasites. The age of fish largely determines the qualitative and quantitative composition of the parasite fauna.

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Hematological parameters associated with parasitism in pike, Esox lucius caught from Anzali wetland

Cited by 14 publications

References 11 publications

Influence of Age on Stress Responses of White Seabream to Amyloodiniosis

Influence of Age on Stress Responses of White Seabream to Amyloodiniosis

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

Parasitofauna of pike Esox lucius of the Lower Tobol (Russia)

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