Seasonal changes in erythrocyte osmotic fragility and haematocrit in American plaice infected with <i>Haemohormidium terranovae</i>

Siddall, Mark E.; Measures, Lena N.; Desser, Sherwin S.

doi:10.1111/j.1095-8649.1995.tb01867.x

Cited by 4 publications

(1 citation statement)

References 18 publications

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“…On the other hand, the H. terraenovae-like organism was detected in fish from CB and SJ, but only once during the Brazilian winter (July-September, water surface temperature, 13-14 o C). This contrasts with Siddall et al (1995), who reported that American plaice held in captivity over winter in Canada showed increased intensity of infection with H. terraenovae between December and March. Dual transmission by marine leeches of Haemohormidium and trypanosomes, and of haemogregarines and trypanosomes, has been reported (Khan 1984, Hayes et al 2006, and leeches and haemogregarines of freshwater turtles may tolerate urban contamination (Brites and Rantin 2004).…”

Section: Remarkscontrasting

confidence: 89%

Potential environmental and host gender influences on prevalence of Haemogregarina platessae (Adeleorina: Haemogregarinidae) and suspected Haemohormidium terraenovae (incertae sedis) in Brazilian flounder from the Patos Lagoon Estuary, Southern Brazil

Davies¹,

Amado²,

Cook³

et al. 2008

FOLIA PARASIT

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Abstract. Flounder, Paralichthys orbignyanus (Valenciennes), were captured in polluted and non-polluted sites within the Patos Lagoon Estuary, southern Brazil, over four seasons. Blood films showed a high prevalence of infection with a haemogregarine, or mixed parasitaemias of this and an organism resembling Haemohormidium terraenovae So, 1972. Haemogregarine gamont stages conformed to existing descriptions of Desseria platessae (Lebailly, 1904) Siddall, 1995 from flatfishes, but intraerythrocytic division of meronts was observed, leading to the recommendation for nomenclatural correction, placing the haemogregarine in the genus Haemogregarina (sensu lato) Danilewsky, 1885. Statistical analyses suggested that although sample sizes were small, infections with meront stages, immature and mature gamonts were all influenced by site, and possibly therefore, by pollution. Season also appeared to determine likelihood of infection with meronts and immature gamonts, but not mature gamonts, while adult fish gender apparently affected infection with immature and mature gamonts, but not meronts. The H. terraenovaelike organism exhibited unusual extracellular forms and did not match closely with the type description of H. terraenovae; precise identification was therefore difficult. Data analyses suggested that parasitism by this organism was influenced by site and fish gender, since females and males from non-polluted water were infected, but only females from the polluted site. Season was also important and significantly more adult fish of both sexes were infected with this parasite in the Brazilian summer and autumn, compared with winter and spring. Finally, these appeared to be the first observations of Haemogregarina platessae, and possibly H. terraenovae, from the southern hemisphere.

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Section: Remarkscontrasting

confidence: 89%

Potential environmental and host gender influences on prevalence of Haemogregarina platessae (Adeleorina: Haemogregarinidae) and suspected Haemohormidium terraenovae (incertae sedis) in Brazilian flounder from the Patos Lagoon Estuary, Southern Brazil

Davies¹,

Amado²,

Cook³

et al. 2008

FOLIA PARASIT

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Potential of Thraustochytrids to Partially Replace Fish Oil in Atlantic Salmon Feeds

Carter

Bransden

Lewis

et al. 2003

Marine Biotechnology

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The replacement of fish oil with a dried product made from thraustochytrid culture, a marine microorganism, in canola-oil-based diets for Atlantic salmon was investigated. Salmon (37 g) were fed for 51 days on diets containing only canola oil, canola oil and fish oil, or canola oil and the thraustochytrid. There were no significant differences in final weight (106.1 +/- 1.1 g), weight gain (69.6 +/- 1.1 g), feed consumption (16.5 +/- 0.2 mg dry matter g(-1) d(-1)), feed efficiency ratio (1.15 +/- 0.03 g (g-1)), or productive protein value (51.2% +/- 1.7%) between the diets. Nor were there any significant differences in whole-body chemical composition, organ somatic indices, or measures of immune function. However, following transfer to seawater and 2 challenges with Vibrio anguillarum, cumulative mortality was significantly lower in fish fed some fish oil than in those fed the 2 diets containing no fish oil. In conclusion, the thraustochytrid had no detrimental effects on the performance of salmon but, at the current inclusion of 10%, failed to confer the same effect as fish oil under challenging conditions.

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Comparative analysis of inherited patterns of the transgene in transgenic mud loach Misgurnus mizolepis lines carrying the CAT reporter gene

Kim

Lee

et al. 2004

Fisheries Sci

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Comparative analyses of the inheritance patterns of transgene transmission and expression for up to F 5 progenies were carried out in different lines of transgenic mud loach Misgurnus mizolepis containing the chloramphenicol acetyltransferase (CAT) reporter gene. Based on Southern blot hybridization, the analyses revealed different integration sites of transgenes in host chromosomes as well as different transmission modes among transgenic lines, including stable inheritance of integrated transgenic constructs, co-transmission of integrated and extrachromosomally persistant copies, and transgene rearrangement through successive generations. CAT-enzyme-linked immunosorbent assay expression analysis found three different major patterns of inherited expression of the transgene: (i) stable persistence of consistent level of expression; (ii) sudden loss of transgene expression following passage through the germline; and (iii) different levels of reduction in the expression in successive generations.

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Seasonal changes in erythrocyte osmotic fragility and haematocrit in American plaice infected with Haemohormidium terranovae

Cited by 4 publications

References 18 publications

Potential environmental and host gender influences on prevalence of Haemogregarina platessae (Adeleorina: Haemogregarinidae) and suspected Haemohormidium terraenovae (incertae sedis) in Brazilian flounder from the Patos Lagoon Estuary, Southern Brazil

Potential environmental and host gender influences on prevalence of Haemogregarina platessae (Adeleorina: Haemogregarinidae) and suspected Haemohormidium terraenovae (incertae sedis) in Brazilian flounder from the Patos Lagoon Estuary, Southern Brazil

Potential of Thraustochytrids to Partially Replace Fish Oil in Atlantic Salmon Feeds

Comparative analysis of inherited patterns of the transgene in transgenic mud loach Misgurnus mizolepis lines carrying the CAT reporter gene

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