ABSTRACT To what extent are generalist species cohesive evolutionary units rather than a compilation of recently diverged lineages. We examine this question in the context of host specificity and geographic structure in the insect pathogen and nematode mutualist Xenorhabdus bovienii. This bacterial species partners with multiple nematode species across two clades in the genus Steinern... https://herbsdailyes.shop/product-category/wheelchairs-power-wheelchairs/