The susceptibility of fishes to haemoflagellates at different ambient temperatures

Author:

Woo P. T. K.,Wehnert S. D.,Rodgers D.

Abstract

SummaryTrout acclimated to 20 °C could not be infected with Cryptobia salmositica. Those acclimated to 5 °C had longer pre-patent periods and considerably lower parasitaemias than those at 10 °C. Forty days after infection, the parasitaemias in fish at 10 °C fluctuated, while this was not observed in those at 5 °C. In vitro incubation of Cryptobia in plasma from 20 °C fish did not affect the motility nor the infectivity of the parasite. Fish infected at 15 °C (low parasitaemias and 2 weeks after inoculation) lost their infections when the ambient temperature was raised to 20 °C. However, in fish with more acute infections (4 weeks after inoculation), the parasitaemias were only substantially reduced when the ambient temperature was raised to 20 °C. Trypanosoma danilewskyi were detected in goldfish acclimated to 10, 20 and 30 °C. However, the parasitaemias in goldfish at 10 and 30 °C were consistently much lower than those at 20 °C.

Publisher

Cambridge University Press (CUP)

Subject

Infectious Diseases,Animal Science and Zoology,Parasitology

Cited by 28 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. trypanosomosis in freshwater fish;CABI Compendium;2022-01-07

2. cryptobiosis;CABI Compendium;2022-01-07

3. Diplomonadida (phylum Parabasalia) and Kinetoplastea (phylum Euglenozoa).;Fish diseases and disorders. Volume 1: protozoan and metazoan infections;2006

4. Effect of Cryptobia salmositica-induced anorexia on feeding behavior and immune response in juvenile rainbow trout Oncorhynchus mykiss;Diseases of Aquatic Organisms;2004

5. Cryptobia (Trypanoplasma) salmositica and salmonid cryptobiosis;Journal of Fish Diseases;2003-11

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