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Changes in blood parameters of hybrid tambacu fish parasitized by Dolops carvalhoi (Crustacea, Branchiura), a fish louse

Promjene pokazatelja krvne slike hibridnih riba tambacu invadiranih ribljom uši Dolops carvalhoi (Crustacea, Branchiura).
Authors: Tavares-Dias, Marcos; De Moraes, Flávio Ruas; Onaka, Eduardo Makoto; Rezende, Paula Cristina Bonadio;

Changes in blood parameters of hybrid tambacu fish parasitized by Dolops carvalhoi (Crustacea, Branchiura), a fish louse

Abstract

Measurement of blood parameters has been used for many years as a tool for monitoring the health of fish. The present study investigated the effects of a natural infestation of Dolops carvalhoi Lemos de Castro, 1949, on red blood cells, thrombocytes and white blood cell counts, as well as plasma glucose and serum electrolyte levels in hybrid tambacu (Piaractus mesopotamicus x Colossoma macropomum). Parasitized fish showed low haematocrit and magnesium levels and increases in MCHC, plasma glucose levels, serum protein, sodium and chloride levels, number of monocytes and PAS-positive granular leukocytes (PAS-GL), when compared with values in control fish. This study is the first to report changes in fish physiology caused by D. Carvalhoi infestation, and the results obtained indicate that a mild infection can lead to important osmoregulatory disturbances in hosts.

Poznato je da se mjerenje vrijednosti različitih pokazatelja u krvi riba upotrebljava za praćenje njihova zdravlja. U ovom istraživanju promatran je učinak prirodne invazije ribljom uši Dolops carvalhoi, Lemos de Castro, 1949., na broj eritrocita, trombocita, leukocita te na razinu glukoze u plazmi i elektrolita u serumu u hibridne ribe tambacu (Piaractus mesopotamicus x Colossoma macropomum). U invadiranih riba zabilježene su niže vrijednosti hematokrita i magnezija te povećane vrijednosti srednje koncentracije hemoglobina, glukoze u plazmi, serumskih proteina, natrija i klorida, broja monocita te PAS pozitivnih granuliranih leukocita u odnosu na kontrolne ribe. Ovo je prvo izvješće o fiziološkim promjenama uzrokovanima ribljom uši Dolops carvalhoi. Rezultati naznačuju da blaga invazija može dovesti do znatnih osmozoregulacijskih poremećaja u domaćina.

Countries
Brazil, Croatia
Keywords

Blood cells, paraziti, Infestation, Branchiura (Crustacea), parasites, 333, Crustacea, Phthiraptera, Haematological, Parasites, invazija, Colossoma macropomum, Piaractus mesopotamicus, Dolops carvalhoi, Freshwater fish, hematologija, Arguloida, freshwater fish, slatkovodna riba, blood cells, infestation, krvne stanice, haematological

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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bronze