منابع مشابه
Secondary metabolites in floral nectar reduce parasite infections in bumblebees.
The synthesis of secondary metabolites is a hallmark of plant defence against herbivores. These compounds may be detrimental to consumers, but can also protect herbivores against parasites. Floral nectar commonly contains secondary metabolites, but little is known about the impacts of nectar chemistry on pollinators, including bees. We hypothesized that nectar secondary metabolites could reduce...
متن کاملFlower Choice and Learning in Foraging Bumblebees: Effects of Variation in Nectar Volume and Concentration
Many flower visitors, including bumblebees, interact with a diversity of host plants. Proficiency at handling several floral types requires considerable learning ability (reviews by Papaj & Lewis 1993; Menzel 2001). These bees rapidly learn which of several flower species is more profitable and specialize on the more profitable ones. They learn to associate a reward with a flower’s color, patte...
متن کاملNectar vs. pollen loading affects the tradeoff between flight stability and maneuverability in bumblebees.
Bumblebee foragers spend a significant portion of their lives transporting nectar and pollen, often carrying loads equivalent to more than half their body mass. Whereas nectar is stored in the abdomen near the bee's center of mass, pollen is carried on the hind legs, farther from the center of mass. We examine how load position changes the rotational moment of inertia in bumblebees and whether ...
متن کاملBumblebees are not deterred by ecologically relevant concentrations of nectar toxins.
Bees visit flowers to collect nectar and pollen that contain nutrients and simultaneously facilitate plant sexual reproduction. Paradoxically, nectar produced to attract pollinators often contains deterrent or toxic plant compounds associated with herbivore defence. The functional significance of these nectar toxins is not fully understood, but they may have a negative impact on pollinator beha...
متن کاملWeak and contradictory effects of self-medication with nectar nicotine by parasitized bumblebees
The presence of antimicrobial secondary metabolites in nectar suggests that pollinators, which are threatened globally by emergent disease, may benefit from the consumption of nectars rich in these metabolites. We tested whether nicotine, a nectar secondary metabolite common in and Solenaceae Tilia species, is used by parasitized bumblebees as a source of self-medication, using a series of toxi...
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ژورنال
عنوان ژورنال: Insectes Sociaux
سال: 2020
ISSN: 0020-1812,1420-9098
DOI: 10.1007/s00040-020-00751-y