Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Bacteria associated with early life stages of the great scallop, Pecten maximus: impact on larval survival
Torkildsen, L.; Lambert, C.; Nylund, A.; Magnesen, T.; Bergh, Ø. (2005). Bacteria associated with early life stages of the great scallop, Pecten maximus: impact on larval survival. Aquacult. Int. 13(6): 575-592. https://dx.doi.org/10.1007/s10499-005-9002-5
In: Aquaculture International. Springer: London. ISSN 0967-6120; e-ISSN 1573-143X
|  |
| Trefwoord |
|
| Author keywords |
bacteria; challenge experiment; phenotypic characterisation; 16S rDNA;scallop larvae |
| Auteurs | | Top |
- Torkildsen, L.
- Lambert, C.
- Nylund, A.
|
|
|
| Abstract |
A bacteriological study was carried out at a scallop (Pecten maximus) hatchery near Bergen, western Norway following a severe increase in mortality rates during the larval stages of the scallops. No larvae survived to settling, except for those in groups treated prophylactically with chloramphenicol. In order to identify pathogenic strains of bacteria, we performed a challenge test on 10- to 16-day-old larvae using isolated bacterial strains from the hatchery. Infection with six of these strains produced mortalities that were not statistically different from that resulting from infection with the known pathogen Vibrio pectenicida. However, about 5% of the strains tested in the challenge experiment produced higher motility rates than found in the unchallenged control group, indicating a possible probiotic effect. On the basis of 16S rDNA analysis on these strains, the phylogenetic tree indicated two groups of apparent pathogens: (1) one strain, LT13, grouped together with Alteromonas/Pseudoalteromonas; (2) a cluster of strains grouped together with Vibrio splendidus (LT06, LT21, LT73, PMV18 and PMV19). Strain LT13 was isolated from cultures of the microalga Chaetoceros calcitrans used for feed, while the other strains were isolated from larval cultures. Transmission electron microscopy showed intracellular bacteria that resembled bacteria in the groups Chlamydiaceae and Rickettsiaceae. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
