Bombus occidentalis
National Institutes of Health
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Since the mid-1990s, Bombus occidentalis (Green) has declined from being one of the most common to one of the rarest bumble bee…
Conservation action for species of concern requires that “designatable units” (e.g., species, subspecies, geographic races…
Habitat loss is the leading cause of extinctions on the planet. However, negative effects of habitat loss and fragmentation on…
The taxonomic status of B. terricola Kirby and B. occidentalis Greene has long been questioned. However recent COI gene sequence…
The increasing evidence for population declines in bumble bee (Bombus) species worldwide has accelerated research efforts to…
Introduction: Several species of bumble bees (Bombus spp.) are apparently declining in different regions of North America. Among…
Summary Cold narcosis is commonly used for immobilizing bees and has been found to have no effect on mortality and fecundity in…
Abstract Experiments were conducted in commercial tomato, Lycopersicon esculentum Miller (Solanaceae), greenhouses to compare the…
Abstract. Spatiotemporal variation in the interactions among plants and animals is widespread; yet our conceptual and empirical…