| morphology and aspects of growth of a trypanosome transmitted by the marine leech johanssonia arctica (piscicolidae) from northern norway. | the fish leech johanssonia arctica (johansson, 1898) was collected from king crabs paralithodes camtschaticus (tilesius, 1815) in finnmark, n norway, and allowed to feed on experimental fish hosts in the laboratory. this leech ingested blood from laboratory-reared cod (gadus morhua) and halibut (hippoglossus hippoglossus). some experimental halibut acquired trypanosome infection, with parasitaemia between ca. 500 and 60,000 trypanosomes ml(-1). the trypanosomes were of variable size and measured ... | 2005 | 16270801 |
| a trypanosome of atlantic cod, gadus morhua l., transmitted by the marine leech calliobdella nodulifera (malm, 1863) (piscicolidae). | the fish leech, calliobdella nodulifera, transmitted a trypanosome while feeding on laboratory-reared cod ( gadus morhua). the flagellate body length increased from 43 microm 17 days post-infection (d.p.i.) to 57 microm 113 d.p.i. characteristic features are cell striation, a nearly central nucleus and a short (3.5 microm) distance from the kinetoplast to the posterior end (pk). following growth, the trypanosomes became increasingly slender, with fewer striae and a shorter flagellum, while the p ... | 2004 | 15127296 |
| experimental transmission, development, and effects of a parasitic copepod, lernaeocera branchialis, on atlantic cod, gadus morhua. | development and effects of adult lernaeocera branchialis were studied following experimental transmission to atlantic cod, gadus morhua. growth from the detection of pennella stages to mature adults was approximately 9-10 mo (september-june of the following year) at which time eggs were released and the adult parasites degenerated. cod from all size groups were susceptible but the prevalence of infection was greater in small fish. peak mortality, about 30%, occurred within 4 mo after infection a ... | 1988 | 3397819 |
| effect of concurrent infections of lernaeocera branchialis (copepoda) and trypanosoma murmanensis (protozoa) on atlantic cod, gadus morhua. | a study was initiated to ascertain the prevalence, effect and interaction of the adult stages of the parasitic copepod, lernaeocera branchialis, on atlantic cod concurrently infected with a hematozoan, trypanosoma murmanensis, by comparing condition (k) factor, organ somatic indices, hematological values and lipid concentrations of the liver from infected and uninfected fish of comparable length. prevalence of the copepod varied from 9 to 21% and was highest in fish examined on the southern coas ... | 1986 | 3712645 |
| trypanosoma murmanensis: its effects on the longhorn sculpin, myoxocephalus octodecemspinosus. | a study was undertaken to ascertain the effects of trypanosoma murmanensis, on adult longhorn sculpins (myoxocephalus octodecemspinosus) following experimental infection. blood samples, taken at intervals after infection, indicated a decrease in hematocrit, hemoglobin and total plasma protein levels which did not return to normal for at least 72 days. an increase of lymphocytic cells occurred about 42 and 58 days but reverted later to normal levels. anemia persisted despite low parasitemias and ... | 1980 | 7411741 |
| infectivity of trypanosoma murmanensis to leeches (johanssonia sp.). | | 1977 | 922612 |
| the life cycle of trypanosoma murmanensis nikitin. | | 1976 | 991015 |