John Ascher

Last updated
A mountain bumblebee (Bombus appositus) that John Ascher identified for a contributor to the community science website BugGuide.net. Bombus appositus lateral1.jpg
A mountain bumblebee ( Bombus appositus ) that John Ascher identified for a contributor to the community science website BugGuide.net.

John S. Ascher is an American entomologist. He specializes in the study of Apoidea (bees as well as sphecid wasps) and has been described as "one of the world's leading native bee taxonomists." [1] While they get less publicity than the industrious honeybee, bees indigenous to the Americas play a crucial "role in pollinating crops such as tomatoes, cranberries, alfalfa and squash, experts say. They are often more effective than honeybees as pollinators, and more resistant to problems that have decimated honeybees in the U.S. and Europe, several studies show.” [2]

Contents

Career

Ascher is an assistant professor at the National University of Singapore and is the senior project manager of the Bee Database at the American Museum of Natural History. [3]

Ascher has compiled an index of all known bee species in our biosphere, which as of 2008 totaled 19,200 types of bees. [4] [5] Ascher told NPR’s Talk of the Nation in 2013, “We know that this is a big underestimate because there are vast numbers of new species…waiting in our collections for a taxonomist to have the resources to describe them.” [6]

He led the data-collection effort on one project that determined “that declining bee species tend to have larger body sizes, restricted diets, and shorter flight seasons [and] ‘southern’ bees reaching their northern distributional limits in the Northeast are increasing, a finding that could reflect a response to climate change.” [7]

His data was also used to generate a map of bee diversity worldwide that determined bees prefer dry, treeless landscapes in temperate zones rather than dense, humid forests, which is an “unusual distribution.” Daniel Cariveau of the University of Minnesota’s Cariveau Native Bee Lab described the creators of the map project as “really some of the best taxonomists in the world.” [8]

Ascher found the newly identified bee species Lasioglossum gotham in a New York City botanic garden. [9]

Related Research Articles

<span class="mw-page-title-main">Bee</span> Clade of insects

Bees are winged insects closely related to wasps and ants, known for their roles in pollination and, in the case of the best-known bee species, the western honey bee, for producing honey. Bees are a monophyletic lineage within the superfamily Apoidea. They are currently considered a clade, called Anthophila. There are over 20,000 known species of bees in seven recognized biological families. Some species – including honey bees, bumblebees, and stingless bees – live socially in colonies while most species (>90%) – including mason bees, carpenter bees, leafcutter bees, and sweat bees – are solitary.

<span class="mw-page-title-main">Honey bee</span> Colonial flying insect of genus Apis

A honey bee is a eusocial flying insect within the genus Apis of the bee clade, all native to mainland Afro-Eurasia. After bees spread naturally throughout Africa and Eurasia, humans became responsible for the current cosmopolitan distribution of honey bees, introducing multiple subspecies into South America, North America, and Australia.

<span class="mw-page-title-main">Pollinator</span> Animal that moves pollen from the male anther of a flower to the female stigma

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.

<span class="mw-page-title-main">Bumblebee</span> Genus of insect

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.

<span class="mw-page-title-main">Fruit tree pollination</span>

Pollination of fruit trees is required to produce seeds with surrounding fruit. It is the process of moving pollen from the anther to the stigma, either in the same flower or in another flower. Some tree species, including many fruit trees, do not produce fruit from self-pollination, so pollinizer trees are planted in orchards.

<span class="mw-page-title-main">Pollination management</span> Horticultural practices to enhance pollination

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.

<i>Vaccinium virgatum</i> Berry and plant

Vaccinium virgatum is a species of blueberry native to the Southeastern United States, from North Carolina south to Florida and west to Texas.

<span class="mw-page-title-main">Pollinator decline</span> Reduction in abundance of insect and other animal pollinators

Pollinator decline is the reduction in abundance of insect and other animal pollinators in many ecosystems worldwide that began being recorded at the end of the 20th century. Multiple lines of evidence exist for the reduction of wild pollinator populations at the regional level, especially within Europe and North America. Similar findings from studies in South America, China and Japan make it reasonable to suggest that declines are occurring around the globe. The majority of studies focus on bees, particularly honeybee and bumblebee species, with a smaller number involving hoverflies and lepidopterans.

<i>Gelsemium sempervirens</i> Species of plant

Gelsemium sempervirens is a twining vine in the family Gelsemiaceae, native to subtropical and tropical America: Honduras, Guatemala, Belize, Mexico, and southeastern and south-central United States. It has a number of common names including yellow jessamine or confederate jessamine or jasmine, Carolina jasmine or jessamine, evening trumpetflower, gelsemium and woodbine.

<span class="mw-page-title-main">Buzz pollination</span> Technique used by bees to release pollen

Buzz pollination or sonication is a technique used by some bees, such as solitary bees and bumblebees, to release pollen which is more or less firmly held by the anthers. The anthers of buzz-pollinated plant species are typically tubular, with an opening at only one end, and the pollen inside is smooth-grained and firmly attached. With self-fertile plants such as tomatoes, wind may be sufficient to shake loose the pollen through pores in the anther and accomplish pollination. Visits by bees may also shake loose some pollen, but more efficient pollination of those plants is accomplished by a few insect species who specialize in sonication or buzz pollination.

<i>Amegilla</i> Genus of insects, blue-banded bees

Amegilla is a large genus of bees in the tribe Anthophorini. It has been split into many subgenera, including Asaropoda, Micramegilla,Notomegilla and Zonamegilla.

<span class="mw-page-title-main">Colony collapse disorder</span> Aspect of apiculture

Colony collapse disorder (CCD) is an abnormal phenomenon that occurs when the majority of worker bees in a honey bee colony disappear, leaving behind a queen, plenty of food, and a few nurse bees to care for the remaining immature bees. While such disappearances have occurred sporadically throughout the history of apiculture, and have been known by various names, the syndrome was renamed colony collapse disorder in early 2007 in conjunction with a drastic rise in reports of disappearances of western honey bee colonies in North America. Beekeepers in most European countries had observed a similar phenomenon since 1998, especially in Southern and Western Europe; the Northern Ireland Assembly received reports of a decline greater than 50%. The phenomenon became more global when it affected some Asian and African countries as well. From 1990 to 2021, the United Nation’s FAO calculated that the worldwide number of honeybee colonies increased 47%, reaching 102 million.

<span class="mw-page-title-main">The Pollinator Pathway</span> Interactive biodiversity project in Washington state

The Pollinator Pathway is a participatory art, design and ecology social sculpture initiative founded by the artist and designer Sarah Bergmann. Its objective is to connect existing isolated green spaces and create a more hospitable urban environment for pollinators like bees with a system of ecological corridors of flowering plants by using existing urban infrastructure such as curb space and rooftops.

<i>Blephilia hirsuta</i> Species of flowering plant

Blephilia hirsuta, commonly known as hairy wood-mint or hairy pagoda plant, is a species of herbaceous perennial in the mint family Lamiaceae. It is native to eastern North America.

<i>Bombus ruderatus</i> Species of bee

Bombus ruderatus, the large garden bumblebee or ruderal bumblebee, is a species of long-tongued bumblebee found in Europe and in some parts of northern Africa. This species is the largest bumblebee in Britain and it uses its long face and tongue to pollinate hard-to-reach tubed flowers. Bumblebees are key pollinators in many agricultural ecosystems, which has led to B. ruderatus and other bumblebees being commercially bred and introduced into non-native countries, specifically New Zealand and Chile. Since its introduction in Chile, B. ruderatus has spread into Argentina as well. Population numbers have been declining and it has been placed on the Biodiversity Action Plan to help counteract these declines.

<i>Lasioglossum gotham</i> Species of bee in the United States

Lasioglossum gotham, commonly known as the Gotham bee, is an extant species of sweat bee native to Eastern and Midwestern United States.

Megachile angelarum is a species of bee in the Megachilidae family.

<i>Agapostemon angelicus</i> Species of bee

Agapostemon angelicus is a species of sweat bee in the family Halictidae native to North America. Unlike apid bees, members of the Halictidae family are not honey-producers, although they still are pollinators.

<span class="mw-page-title-main">Irish Bee Conservation Project</span> Bee conservation charity in Ireland

The Irish Bee Conservation Project is a charitable organisation in Ireland that seeks to conserve all native Irish bee species. It has four "pillars of support" in its work: providing habitats, increasing biodiversity, holding education events and performing research into the decline of bee species. Species of bee in Ireland include the honeybee, 21 species of bumblebee and 78 species of solitary bee.

<span class="mw-page-title-main">Kit Prendergast</span> Australian wild bee ecologist

Kit Prendergast, nicknamed "The Bee Babette", is a wild bee ecologist from Perth, Western Australia.

References

  1. Neal, Quinn; Sinanan, Samuel (2020-05-22). "137 John Ascher - The problem with measuring bee decline". PolliNation Podcast - Oregon State University (OSU) Extension Service. Archived from the original on 2021-01-22. Retrieved 2022-08-08.
  2. "Native Bees are all the Buzz." Wall Street Journal (Online), Apr 28, 2012.
  3. "ANHM staff directory: Ascher, John". Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  4. Thompson, Andrea (2008-06-16). "Bees outnumber birds and mammals". NBC News . Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  5. "John Ascher | The Brian Lehrer Show". WNYC. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  6. "Getting The Springtime Buzz On Bees". NPR.org. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  7. "New research confirms plight of bumble bees, persistence of other bees in Northeast". ScienceDaily. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  8. Wetzel, Corryn (2020-11-19). "Scientists Create a Buzz With the First Ever Global Map of Bee Species". Smithsonian Magazine. Archived from the original on 2022-08-08. Retrieved 2022-08-08.
  9. Olsen, Erik (2011-11-10). "City Bees Newly Discovered, Yet Here All Along". The New York Times City Room Blog. Archived from the original on 2022-08-08. Retrieved 2022-08-08.