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A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.
A bumblebee is any of over 250 species in the genus Bombus, part of Apidae, one of the bee families. This genus is the only extant group in the tribe Bombini, though a few extinct related genera are known from fossils. They are found primarily in higher altitudes or latitudes in the Northern Hemisphere, although they are also found in South America, where a few lowland tropical species have been identified. European bumblebees have also been introduced to New Zealand and Tasmania. Female bumblebees can sting repeatedly, but generally ignore humans and other animals.
Pollination management is the horticultural practices that accomplish or enhance pollination of a crop, to improve yield or quality, by understanding of the particular crop's pollination needs, and by knowledgeable management of pollenizers, pollinators, and pollination conditions.
Pesticides vary in their effects on bees. Contact pesticides are usually sprayed on plants and can kill bees when they crawl over sprayed surfaces of plants or other areas around it. Systemic pesticides, on the other hand, are usually incorporated into the soil or onto seeds and move up into the stem, leaves, nectar, and pollen of plants.
Bombus terrestris, the buff-tailed bumblebee or large earth bumblebee, is one of the most numerous bumblebee species in Europe. It is one of the main species used in greenhouse pollination, and so can be found in many countries and areas where it is not native, such as Tasmania. Moreover, it is a eusocial insect with an overlap of generations, a division of labour, and cooperative brood care. The queen is monogamous which means she mates with only one male. B. terrestris workers learn flower colours and forage efficiently.
Bees can suffer serious effects from toxic chemicals in their environments. These include various synthetic chemicals, particularly insecticides, as well as a variety of naturally occurring chemicals from plants, such as ethanol resulting from the fermentation of organic materials. Bee intoxication can result from exposure to ethanol from fermented nectar, ripe fruits, and manmade and natural chemicals in the environment.
Neonicotinoids are a class of neuro-active insecticides chemically similar to nicotine, developed by scientists at Shell and Bayer in the 1980s.
Clothianidin is an insecticide developed by Takeda Chemical Industries and Bayer AG. Similar to thiamethoxam and imidacloprid, it is a neonicotinoid. Neonicotinoids are a class of insecticides that are chemically similar to nicotine, which has been used as a pesticide since the late 1700s. Clothianidin and other neonicotinoids act on the central nervous system of insects as an agonist of nAChR, the same receptor as acetylcholine, the neurotransmitter that stimulates and activating post-synaptic acetylcholine receptors but not inhibiting AChE. Clothianidin and other neonicotinoids were developed to last longer than nicotine, which is more toxic and which breaks down too quickly in the environment.
Bombus hortorum, the garden bumblebee or small garden bumblebee, is a species of bumblebee found in most of Europe north to 70°N, as well as parts of Asia and New Zealand. It is distinguished from most other bumblebees by its long tongue used for feeding on pollen in deep-flowered plants. Accordingly, this bumblebee mainly visits flowers with deep corollae, such as deadnettles, ground ivy, vetches, clovers, comfrey, foxglove, and thistles. They have a good visual memory, which aids them in navigating the territory close to their habitat and seeking out food sources.
Bombus suckleyi is a species of bumblebee known commonly as Suckley's cuckoo bumblebee, named after biologist George Suckley. Suckley's bumble bee is a generalist pollinator and represents a rare group of obligate, parasitic bumble bees. Suckley's bumble bee is a social-parasite because it invades the nests of the host bumble bees, including the western bumble bee, and relies on host species workers to provision its larvae. It is native to northwestern North America, including Alaska and parts of western and central Canada and the western United States.
Bombus occidentalis, the western bumblebee, is one of around 30 bumblebee species present in the western United States and western Canada. A recent review of all of its close relatives worldwide appears to have confirmed its status as a separate species.
Thiacloprid is an insecticide of the neonicotinoid class. Its mechanism of action is similar to other neonicotinoids and involves disruption of the insect's nervous system by stimulating nicotinic acetylcholine receptors. Thiacloprid was developed by Bayer CropScience for use on agricultural crops to control of a variety of sucking and chewing insects, primarily aphids and whiteflies.
Bombus affinis, commonly known as the rusty patched bumble bee, is a species of bumblebee endemic to North America. Its historical range in North America has been throughout the east and upper Midwest of the United States, north to Ontario, Canada, where it is considered a "species at risk", east to Quebec, south to Georgia, and west to the Dakotas. Its numbers have declined in 87% of its historical habitat range. On January 10, 2017, the United States Fish and Wildlife Service placed B. affinis on the list of endangered species, making the rusty patched bumblebee the first bee to be added to the list in the continental United States.
Geraldine (Jeri) Wright is an insect neuroethologist in the United Kingdom. In 2018 she became the Professor of Comparative Physiology/Organismal Biology at the University of Oxford and in 2021 she was appointed Hope Professor of Zoology.
Lynn Dicks is a conservation scientist and ecologist in the UK. She is a Professor of Ecology at the University of Cambridge, Honorary Reader at the University of East Anglia, and an expert in sustainable farming and insect conservation.
Julia Koricheva is an ecologist in the UK. She is professor of ecology at Royal Holloway, University of London and she researches ecosystem services in forests, the interactions between insects and plants and is an expert in meta-analysis.
Juliet Osborne is an entomologist and ecologist in the UK. She is professor of applied ecology at the University of Exeter and she looks at the health of social insects and how they pollinate plants.
Jane Memmott is an ecologist and entomologist from the United Kingdom. She is professor of ecology at the University of Bristol. Her research focuses on community ecology and she is an expert on the interactions between insect pollinators and plants.
Bombus hypocrita, also known as the short-tongued bumblebee, is a Japanese bumblebee commonly used in commercial pollination. These short-tongued bumblebees have a proboscis about 7-9mm long, which is folded under their head when flying. Bumblebees are a small fuzzy insect with yellow and black banding along their abdomen. They are round and covered in pile, the hair-like structures that give them their distinct fuzzy appearance.
Jane Stout FRES is an Entomologist and Ecologist in Ireland. She is a professor of Ecology and Vice President for Biodiversity & Climate Action, at Trinity College Dublin, is current President of the Royal Entomological Society and is an expert in pollination ecology.
References
- ↑ "Professor Elli Leadbeater - Research - Royal Holloway, University of London". pure.royalholloway.ac.uk. Retrieved 13 December 2019.
- ↑ UCL (27 March 2024). "GEE recruits Professor of Ecosystems and Biodiversity Research". UCL Division of Biosciences. Retrieved 30 September 2024.
- ↑ "Bumblebees use logic to find the best flowers". ScienceDaily. Retrieved 13 December 2019.
- 1 2 "Decoding the honeybee dance could lead to healthier hives". phys.org. Retrieved 13 December 2019.
- ↑ "Pesticides influence bee learning and memory". ScienceDaily. Retrieved 13 December 2019.
- ↑ Asher, Claire (15 August 2018). "A new pesticide may be as harmful to bees as the old one". Science | AAAS. Retrieved 13 December 2019.
- ↑ "New Pesticide Affects Bumblebee Reproduction". The Scientist Magazine. Retrieved 13 December 2019.
- ↑ "Research finds a new generation insecticide reduces bumblebee egg laying". phys.org. Retrieved 13 December 2019.
