Established in 1964, the IUCN Red List of Threatened Species has evolved to become the world’s most comprehensive information source on the global conservation status of animal, fungi and plant species. Stephen (1957) recorded it from the Umpqua and Rogue River Valleys of Oregon. Bumblebees, Their Behaviour and Ecology. Shared use of flowers leads to horizontal pathogen transmission. Recently, Thomson (2004, 2006) conducted competition experiments on B. occidentalis colonies placed at three distances from introduced honey bee hives. Report to US Fish and Wildlife Service, Portland, OR on 2001-2003 seasons (submitted 29 June 2004). Prezi Video + Unsplash: Access over two million images to tell your story through video Science 313(5785): 351-354. A review of butterfly conservation in central southern Britain: II. 1990. Bumble bee colonies depend on floral resources for their nutritional needs; nectar provides carbohydrates for adult flight fuel and basic colony energy needs and pollen provides protein primarily for offspring growth. (Last accessed 26 Feb. 2009). Whether you collect as part of atlassing activities, research, or to add to your personal collection, Bumble Bee Watch recommends that collectors strive to sample a population and not deplete it. He didn’t see a single one. Pollinators in general contribute $20 billion in value to the U.S. agriculture industry. What Do You Know About The Franklin's Bumblebee 10 Questions | By Jaksiboy | Last updated: May 10, 2018 | Total Attempts: 118 Questions All questions 5 questions 6 questions 7 questions 8 questions 9 questions 10 questions 2006; Ellis et al. Pollinator Conservation Handbook. Oikos 114: 407-418. Biological Conservation 113: 1-12. Panzer, R. 2002. Franklin's bumblebee (Bombus franklini) is known to be one of the most narrowly distributed bumblebee species, making it a critically endangered bee of the western United States. The Xerces Society, Portland, Oregon. The western monarch population has declined about 98 percent since the late 1980s, when the population was estimated at 4.5 million. Additionally, since B. franklini probably requires abandoned rodent borrows or clumps of grass for nesting, population sites may be limited by the abundance of rodents and the presence of undisturbed grassland. Insecticides applied in the spring when bumble bee queens are foraging and colonies are small are likely to have a more significant effect on bumble bee populations than insecticides that are applied at other times of the year (Goulson et al. Biesmeijer, J. C., S. P. M Roberts, M. Reemer, R. Ohlemiller, M. Edwards, T. Peeters, A. P. Schaffers, S. G. Potts, R. Kleukers, C. D. Thomas, J. Settele, and W. E. Kunin. If its population has indeed reached a critical level, the species will require extensive protection in order to avoid extinction. For Franklin’s bumble bee, the effects of this fungus may have been compounded by insecticide use; loss of habitat; and, given its restricted historic range, a small population size. What makes this species so fragile and close to extinction?  Franklin's bumblebee is known to collect nectar and pollen from several wildflowers, such as lupine, California poppy, and horsemint, which causes it to be classified as a generalist forager. Red List of Pollinator Insects of North America. Worldwide, bees are facing significant challenges due to habitat loss, pesticide use and climate change. Endangered Species Act Listing status: Under review; possibly already extinct. Box 97387, Washington, D.C. 20090-7387. You can easily recognize them, because they are the only bumble bees flying out there for the moment. An examination of the theoretical effect of removal of specialist and generalist pollinators on the extinction of plant species concluded that the loss of generalist pollinators poses the greatest threat to pollinator networks (Memmott et al. Japanese Journal of Applied Entomology and Zoology 44: 47-50 (in Japanese with English abstract). Restoration Ecology 6: 244-252. The known range of Franklin’s bumblebee covered an area only about 190 miles north to south and 70 miles east to west. Conservation Biology 16 (5): 1296-1307. Flanders, R. V., W. F. Wehling, and A. L. Craghead. Oregon State College, Agricultural Experiment Station, Technical Bulletin 40, 163pp. Bombus franklini have been observed collecting pollen on lupine (Lupinus) and California poppy (Eschscholzia), and nectaring on horsemint (Agastache) and mountain penny-royal (Monardella) (R. Thorp pers. Franklin’s Bumblebee may be Added to Endangered Species List. Franklin’s bumble bee is easily identified by the extended yellow on the anterior top of the thorax that extends behind the wing bases and forms an … Additionally, B. californicus have yellow on the abdomen while B. franklini does not, and have a long face in contrast to the round face of B. franklini. Insecticide application on Forest Service managed public lands for spruce budworm has been shown to cause massive kills of bumble bees and reduce pollination of nearby commercial blueberries in New Brunswick (reviewed in Kevan & Plowright 1995). Ecological impacts of introduced honey bees. It was he who sounded the alarm. 1988. Franklin’s bumble bee, named in 1921 for Henry J. Franklin, who monographed the bumble bees of North and South America in 1912-13, frequents California poppies, … A modeling approach to management tradeoffs for the Fender’s blue. IUCN. The large bee that visits the nest near the end of the video above belongs to a different species. Original profile prepared by Dr. Robbin Thorp, University of California- Davis. Some people might recall dodging flying bumblebees as kids, or finding the bees flitting around flowers in their front yard. Near the end of the colony cycle, reproductives (queens and males) are produced. There are over 255 species of bumblebees, according to the Integrated Taxonomic Information System (ITIS), so bumblebees can be many sizes. At the end of the colony season the founding queen, all workers and males die and the inseminated hibernating new queens are left to carry on the line into the following year. These include the Morrison Bumblebee, Southern Plains Bumblebee, Franklin’s Bumblebee, Rusty Patched Bumblebee, and the Western Bumblebee. Additionally, increased amounts of UV-B radiation from a reduction in ozone could delay flowering in plants and reduce the amount of flowers that plants produce (National Research Council 2007), while an increase in atmospheric CO2 from global climate change may alter plant nectar production, all of which could have negative effects on the foraging success of bumble bees (reviewed in Davis 2003). Build a Nest Box for Bumblebees: It is mid-March now and this is the moment, here in the Netherlands, that the bumblebee queens are coming out of hibernation. Since many plants rely on bumble bees to achieve pollination, their population declines and losses have far ranging ecological impacts. Bulletin of the Natural History Museum, London (Ent.) Thomson, D. 2004. Sugden, E. A. 1994). 100% Upvoted. Landscape level habitat quality has been shown to influence bumble bee species richness and abundance, indicating that isolated patches of habitat are not sufficient to fully support bumble bee populations (Hatfield & LeBuhn 2007; Ã–ckinger & Smith 2007). Franklin's Bumble Bee Facts Last Updated: May 7, 2017 To Cite This Page: Glenn, C. R. 2006. 1998. Females of B. occidentalis are similar to B. franklini in the round faces, and black hair on the face, but differ in having the hair on the vertex black, as opposed to yellow. Related Stories. Complementary sex determination substantially increases extinction proneness of haplodiploid populations. 2006.  Females have black hair on their faces and the vertices, with some light hairs mixed above and below their antennal bases, while most similar bumblebee species have yellow. Therefore, a further decline in the population of bumblebees could result in higher costs of certain products. This article is only an excerpt. Most bumblebee species are currently located in central Europe ©Vladimir Sazonov – Adobe Stock.com. It is known from Douglas, Jackson, and Josephine counties in Oregon and Siskiyou and Trinity counties in California. Homeowners, community members, school gardeners, farmers—everyone can help Thorp, R. W. 2005b. NatureServe Explorer: An online encyclopedia of life [web application]. No individuals were found in 2007 or 2008. Pesticide drift from aerial spraying can kill 80% of foraging bees close to the source and drift can continue to be dangerous for well over a mile (Johansen and Mayer 1990). Archived. Biological Conservation 129: 461-467. Although the very large size of the queens suggests that the dispersal ability of this species may be greater than that of other bumble bees within its range, the patchy distribution of its remaining habitat might hinder dispersal made necessary by climate change. Tweet. Frankie, G. W., R. W. Thorp, M. Schindler, J. Hernandez, B. Ertter, and M. Rizzardi. The U.S. FWS's Threatened & Endangered Species System track information about listed species in the United States How to Protect Our Disappearing Bumble Bees. Bombus franklini is readily distinguished from other bumble bees in its range by the extended yellow on the anterior top of the thorax which extends well behind the wing bases and forms an inverted U-shape around the central patch of black, lack of yellow on the abdomen, predominantly black face with yellow on the vertex (top of the head), and white at the tip of the abdomen. Franklin’s bumble bee, Bombus (Bombus) franklini (Frison). (1983) recorded it from northern California and suggested its restriction to the Klamath Mountain region of southern Oregon and northern California. Williams, P. H. 1986. Male bumble bees patrol selected territories, producing a queen-attracting scent which they deposit in suitable places and replace if it rains. Management: All known Bombus franklini habitat should be protected and managed to include plentiful food (pollen and nectar resources such as Lupinus, Eschscholzia, Agastache, Monardella, Vicia), abandoned rodent burrows in which to nest, and proximity to water sources (lakes, rivers, streams, seeps) for prolongation of flowering season of plant food sources. pp. Posted by. 2003. 2008 Does pathogen spillover from commercially reared bumble bees threaten wild pollinators? Bumble Bees of Western America. Duchateau M. J. and H. H. W. Velthuis. Read More. The flight season of B. franklini is from mid-May to the end of September (Thorp et al. … Final Report: Franklin’s Bumble Bee Inventory in the Southern Cascades of Oregon. Endangered Species Act Listing status: Under review; possibly already extinct. , "Unveiling cryptic species of the bumblebee subgenus Bombus s. str. 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