Genetic variation in lysozyme activity and spontaneous haemolytic activity in Atlantic salmon (Salmo salar)

Røed, Knut; Fjalestad, Kjersti Turid; Strømsheim, A.

doi:10.1016/0044-8486(93)90247-v

Cited by 51 publications

(37 citation statements)

References 27 publications

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“…This conclusion contrasts with the statements of other papers recently published about salmonids (Røed et al, 1993b) and carp (Wiegertjes et al, 1993) but appears confirmed by the findings of Lund et al (1995). Anyway, it must be kept in mind that mechanisms may be quite di#erent according to the species, and that haemolytic systems used in other studies were not always similar to the RRBC system used here with rainbow trout.…”

Section: Discussioncontrasting

confidence: 84%

“…Indeed lysozyme could even be considered as a susceptibility marker according to Fevolden et al, (1994). Røed et al (1993b) considered that serum haemolytic activity was a potential marker of resistance but later results of Lund et al (1995) seemed to invalidate this conclusion. Gjedrem et al (1991) sought for a correlation between the membrane fragility of Atlantic salmon and rainbow trout red blood cells and the resistance to furunculosis challenge, but without success.…”

Section: Introductionmentioning

confidence: 92%

“…Røed et al (1993a) tried again to compare the two above criteria on challenged salmon families and finally suggested a negative genetic correlation between these two putative markers. They concluded that lysozyme was not an adequate disease resistance marker in salmon or rainbow trout (Røed et al, 1993b). Indeed lysozyme could even be considered as a susceptibility marker according to Fevolden et al, (1994).…”

Section: Introductionmentioning

confidence: 97%

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Spontaneous bactericidal and complement activities in serum of rainbow trout (Oncorhynchus mykiss) genetically selected for resistance or susceptibility to furunculosis

Hollebecq

Faivre

Bourmaud

et al. 1995

Fish & Shellfish Immunology

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Section: Discussioncontrasting

confidence: 84%

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 97%

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Spontaneous bactericidal and complement activities in serum of rainbow trout (Oncorhynchus mykiss) genetically selected for resistance or susceptibility to furunculosis

Hollebecq

Faivre

Bourmaud

et al. 1995

Fish & Shellfish Immunology

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“…Non-genetic factors may include pathogen abundance, virulence, and temperature effects on pathogen development (Ibarra et al 1994). Differences in disease resistance between strains of fish have been linked to variation in levels of mucus precipitin activity (Cipriano et al 1994), plasma lipid components (Maita et al 1998), antibody production (Strønsheim et al 1994a, complement (Røed et al 1990(Røed et al , 1992(Røed et al , 1993, and respiratory burst activity in head kidney macrophages (Balfry et al 1994).…”

Section: Discussionmentioning

confidence: 99%

Innate susceptibility differences in chinook salmon Oncorhynchus tshawytscha to Loma salmonae (Microsporidia)

Shaw¹,

Kent²,

Adamson³

2000

Dis. Aquat. Org.

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Loma salmonae (Putz, Hoffman and Dunbar, 1965) Morrison & Sprague, 1981 (Microsporidia) is an important gill pathogen of Pacific salmon Oncorhynchus spp. in the Pacific Northwest. Three strains of chinook salmon O. tshawytscha were infected in 2 trials with L. salmonae by feeding of macerated infected gill tissue or per os as a gill tissue slurry. Intensity of infection was significantly higher in the Northern stream (NS) strain as compared to the Southern coastal (SC) and a hybrid (H) strain derived from these 2 strains. Both wet mount and histological enumeration of intensity of infection demonstrated strain differences. Survival in the NS strain was significantly lower than the other strains. The NS strain may represent a naive strain and be less able to mount an effective immune response against the parasite. KEY WORDS: Loma salmonae · Microsporidia · Innate susceptibilityResale or republication not permitted without written consent of the publisher

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“…These results demonstrate that prolonged stress due to high densities causes a decline in the immune system response, with no increased cortisol levels in chum salmon. Røed et al (1993) and Balfry et al (1997) revealed that there were species-specific variations in the stress-related lysozyme activity in salmonid fish. Therefore, the differences in the results between North et al (2006) and this study may result from the different salmonid species considered.…”

Section: -2 Development Of Techniques To Monitor the Physical Condimentioning

confidence: 99%

Studies on Improvement of Seed Production Techniques in Salmonids and Osmerids

Mizuno¹

2012

Aqua-BioSci. Monogr. (ABSM)

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anadromous and stream-resident types. The anadromous type migrates to the ocean in spring after spending 1 or 2 years in the streams. Before the seaward migration, they undergo smoltification, a series of behavioral, morphological, physiological and biochemical changes controlled by multiple hormonal pathways (Hoar 1988) that transform the freshwater parr into a seaward-migratory smolt. After 1 year of life in the ocean, the fish return to their natal stream in spring and spawn in autumn (Kubo 1980;Machidori and Kato 1984;Kato 1991). For the artificial propagation of masu salmon, hatchery-reared (hatchery) juveniles, originating from artificial insemination and fed a commercial food in hatcheries, are released into streams (Mayama 1992). Effects of masu salmon propagation, which are expressed as the recovery rate of released hatchery seed, are of 0.41 to 2.12% (Miyakoshi 2006), while the recovery rate of chum salmon artificial propagation was >10% (Taya 1989). In other Salmon and Freshwater Fisheries Research Institute Fisheries Research Department Local Independent Administrative Agency Hokkaido Research Organization 3-373, Kitakashiwagi, Eniwa, Hokkaido 061-1433, Japan e-mail: mizuno-shinya@hro.or.jp Abstract Anadromous salmonids and osmerids are artificially propagated in Japan by release of their seeds. However, there are many unsolved problems in the techniques of their propagation. In the present monograph, studies on the improvement of seed production techniques in 4 fishes (masu salmon Oncorhynchus masou, chum salmon O. keta, shishamo smelt Spirinchus lanceolatus and Japanese smelt Hypomesus nipponensis) were outlined. Techniques to evaluate dorsal fin pigmentation during smoltification as an external seed quality, and to improve seed quality of hatchery-reared fish, and the discovery of metabolic problems in hatchery-reared fish were described in yearling masu salmon. In underyearling masu salmon, techniques to evaluate nutritional conditions using kidney melano-macrophage density was developed, and applied to the evaluation of the nutritional condition in hatchery-reared fish after release. In chum salmon fry, the development of techniques to monitor the physical condition and to find its appropriate culture conditions was reviewed. In egg cultures of shishamo and Japanese smelt, techniques to eliminate egg adhesiveness with treatments of kaolin or scallop shell powder suspension were established in order to improve hatching rates. In addition, the appropriate embryogenetic stage for the release of shishamo smelt embryos was demonstrated. Consequently, this monograph reveals that these techniques contribute directly to the development of artificial propagation in some salmonids and osmerids. Studies on Improvement of Seed Production Techniques in Salmonids and Osmerids Shinya Mizuno

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Genetic variation in lysozyme activity and spontaneous haemolytic activity in Atlantic salmon (Salmo salar)

Cited by 51 publications

References 27 publications

Spontaneous bactericidal and complement activities in serum of rainbow trout (Oncorhynchus mykiss) genetically selected for resistance or susceptibility to furunculosis

Spontaneous bactericidal and complement activities in serum of rainbow trout (Oncorhynchus mykiss) genetically selected for resistance or susceptibility to furunculosis

Innate susceptibility differences in chinook salmon Oncorhynchus tshawytscha to Loma salmonae (Microsporidia)

Studies on Improvement of Seed Production Techniques in Salmonids and Osmerids

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