Results 71 to 80 of about 41,218 (203)
VirulenceUnlike vertebrates, which use adaptive immunity, insects depend on humoral and cellular innate immunity to resist pathogens, with pattern recognition receptors (PRRs) like C-type lectins (CTLs) critical for recognizing pathogen-associated molecular ...
Dufu Li +8 more
doaj +1 more source
The Pollination of the Olive [PDF]
Nature, 1908 As Knuth's great work on flower pollination, compiled from all available sources, says nothing whatever about the olive, I recently asked Prof. J. E. Coit, of Arizona, to look out for insects upon the flowers. He carefully examined many olive trees in flower at Tucson, and did not find a single insect at the flowers, with the exception of a thrips ...
openaire +2 more sources
Using stable isotopes in hummingbird breath to estimate reliance on supplemental feeders
Ecology and Evolution, 2023 Understanding the ecological consequences of supplemental feeding to both hummingbirds and the plants they pollinate is complicated by logistical challenges associated with assessing relative dietary resource use with commonly applied observational ...
Nathan Wolf +3 more
doaj +1 more source
Pervasiveness of Parasites in Pollinators [PDF]
PLoS ONE, 2012 Many pollinator populations are declining, with large economic and ecological implications. Parasites are known to be an important factor in the some of the population declines of honey bees and bumblebees, but little is known about the parasites afflicting most other pollinators, or the extent of interspecific transmission or vectoring of parasites ...
Sophie E F Evison +8 more
openaire +4 more sources
InsectsWorker honey bees are crucial for colony stability and ecosystem pollination. However, the cross-scale aging features and underlying mechanisms in the Eastern honey bee (Apis cerana) remain poorly understood.
Qiang Ma +8 more
doaj +1 more source
BiologyThe intestinal immune system is essential for insects to defend against pathogenic infections, while the dual oxidase-reactive oxygen species (DUOX-ROS) pathway is a key component.
Hanjun Wang +11 more
doaj +1 more source
Typology in pollination biology: lessons from an historical critique [PDF]
, 2011 Typological schemes that describe putative floral adaptations for pollinators have played a central role in pollination biology. In 1882 the prominent German botanist and Darwinist Hermann Müller commented critically on a precursor of modern versions of ...
Ollerton, Jeff +6 more
core +1 more source
The Pollinating Network of Pollinators and the Service Value of Pollination in Hanzhong City, China
InsectsPollinating insects are the most important pollinators in nature; they pollinate vegetables, fruits, oil crops, and wild plants, so that crop yields can be increased, wild plants can live and reproduce, and human food security and ecosystem stability are maintained. To identify the pollination network of plants–insects and the pollination service value
Xuemei Chang +5 more
openaire +2 more sources
The role of pollinator attracting scent in the sexually deceptive orchids Ophrys chestermanii, O. normanii and O. tenthredinifera [PDF]
, 2008 Sexual deception of male bees is one of the most remarkable mechanisms of pollination (Ackermann 1986, Proctor & al. 1996). Flowers of the orchid genus Ophrys mimic females of their pollinator species, usually bees and wasps, to attract males, which try ...
Francke, Wittko +9 more
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