Query: NC_011313:871445 Aliivibrio salmonicida LFI1238 chromosome 2, complete sequence Lineage: Aliivibrio salmonicida; Aliivibrio; Vibrionaceae; Vibrionales; Proteobacteria; Bacteria General Information: The fish pathogen Aliivibrio salmonicida, formerly Vibrio salmonicida, a halophilic and psychrophilic bacterium, is the causative agent of Hitra disease, also called cold water vibriosis, in Atlantic salmon and sea farmed rainbow trout in marine aquaculture. This disease, a generalized infection of the blood, occurs primarily in late autumn, winter, or early spring when water temperatures are below 15 degrees C. The Gram-negative bacterium causes tissue degradation, hemolysis and sepsis in vivo.
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General Information: This genus is a group of insect pathogens which live in a mutualistic relationship with the soil nematode family, Steinernematidae. Free-living, juvenile Steinernema spp. enter insect larvae through the digestive tract. They penetrate the larvae body cavity and release Xenorhabdus spp. into the hemolymph (blood). The bacteria multiply rapidly, killing the larvae, and providing suitable nutrient conditions for the growth and reproduction of the Steinernema spp. The nematode matures and reproduces. The new juveniles reassociate with Xenorhabdus spp. and are released into the soil. Unlike Xenorhabdus bovienii, which is found in different Steinernema spp., Xenorhabdus nematophila is associated specifically with Steinernema carpocapsae and can be used as a model for studying host specificity.