Sign up for our enewsletter to receive up-to-date information about our programs & events. Plath, O. E. 1927. The last sighting of this bumblebee species was in Oregon in 2006. 2006. Psyche 34: 122-128. Thorp, R. W. 2004. 2003, Smallidge & Leopold 1997). A review of butterfly conservation in central southern Britain: II. A Tree Bumblebee (Bombus hypnorum) Nest. Endangered Species Act (ESA), making it the first bee in the western U.S. to be officially recognized under the ESA. Males of this species are similar to females, differing as follows: malar space as long as wide, face below antennae with predominantly yellow hair, and tergum 6 with some pale hair laterally. 1994. Agriculture Ecosystems and Environment 74: 373-393. Male bumble bees patrol selected territories, producing a queen-attracting scent which they deposit in suitable places and replace if it rains. California Department of Food and Agriculture, State of California, The Resources Agency, Department of Fish and Game. An estimate of bumble bee population and distribution shows that half of the species studied have seen a more than 50 percent decline. Although 20 were found in 2002 only three were sighted in 2003, all at a single locality. In Bombus sensu stricto, queen production is complicated, apparently depending on a switch point when the first males are produced. Restoration Ecology 6: 244-252. Homeowners, community members, school gardeners, farmers—everyone can help In addition to insecticides, broad-spectrum herbicides used to control weeds can indirectly harm bumble bees by removing the flowers that would otherwise provide the bees with pollen and nectar (Williams 1986; Shepherd et al. 2009, Endangered Species “Species Data” http://www.fws.gov/oregonfwo/Species/Data/. 1994). Research: Monitor, sample, and conduct population estimates of extant populations of B. franklini. An early switch point results in more males and fewer queens, while a late switch point results in larger colonies, more queens, and fewer males (Duchateau and Velthius 1988). 2005. New research using a massive dataset found that the insects are far less common than they used to be; in North America, you are nearly 50 percent less likely to see a bumblebee … Vegetation management for the maintenance and conservation of butterfly habitats in temperate human-dominated habitats. Other pests and diseases found in commercial bumble bees that could be leading to the continued decline in North American bumble bees include the protozoan parasite Crithidia bombi, the tracheal mite Locustacarus buchneri, and the RNA virus known as Deformed Wing Virus (DWV). Why your go-to-market strategy should be industry focused; Dec. 1, 2020. Why your go-to-market strategy should be industry focused Global climate change: A changing climate may cause shifts in the range of host plant species available to pollinators, and can be especially detrimental to pollinators when combined with habitat loss (National Research Council 2007). IUCN. In Shepherd, M. D., D. M. Vaughan, and S. H. Black (eds.) Natural Resources Canada, Canadian Forest Service, Science and Sustainable Development Directorate, Ottawa, Ontario, Canada. Ashland, where the last B. franklini were found in 2003. 2004). 1994, Hobbs 1968). Oikos 114: 407-418. Ecology 85: 458-470. “I already knew (the Franklin’s) had declined by the time I saw that (last) one. 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 is from mid-May to the end of September. Small or inbred populations may also lose resilience to environmental changes, and are at risk of extirpation due to stochastic events such as fire or unusually wet or dry years. Memmott, J., N. M. Waser, and M. V. Price. Endangered Species Act Listing status: Under review; possibly already extinct. worldwide with COI barcodes (Hymenoptera: Apidae)", "Group seeks endangered listing for Franklin's bumblebee", https://en.wikipedia.org/w/index.php?title=Franklin%27s_bumblebee&oldid=985010280, IUCN Red List critically endangered species, Critically endangered fauna of the United States, Critically endangered fauna of California, Pages using citations with accessdate and no URL, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 October 2020, at 12:30. Hair of thorax (= mesosoma) on anterior two-thirds above (= scutum) yellow extending rearward laterally inside and beyond the wing bases (= tegulae) to rear third (= scutellum), but interrupted medioposteriorly by inverted U-shaped patch of black; hair on posterior third (= scutellum) black above; hair of lateral thorax (= mesopleura) black, except for small patch of yellow in upper anterior corner in area of pronotal lobes. Could it be a Franklin’s bumblebee, which hasn’t been seen in these parts since 2006? University of Kent. It is found only from southern Oregon to northern California between the Coast and Sierra-Cascade Ranges, in Douglas, Jackson, and Josephine in Oregon and Siskiyou and Trinity counties in California. During each of the past 11 years, Dr. Thorp surveyed from nine to 17 historic sites (average 12.3 sites) some visited more than once each year with an average of 29.6 visits to historic sites per year. In particular, agricultural intensification, livestock grazing, urban development, and road construction can fragment bumble bee habitat into pieces that are too small or too distant to support diverse bumble bee communities (Goulson et al. It was he who sounded the alarm. 2003. This gives them the distinction of having the narrowest range of any bumblebee in North America. (Hymenoptera: Apidae), in montane meadows. Therefore, a further decline in the population of bumblebees could result in higher costs of certain products. 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. Parallel Declines in Pollinators and Insect-Pollinated Plants in Britain and the Netherlands. We particularly seek comments concerning: (1) Franklin's bumble bee's biology, range, and population trend… USFWS, Oregon Fish and Wildlife Office. Post-1998, the numbers of populations and individuals of B. franklini have declined drastically, evidenced by intensive and extensive surveys primarily conducted by R. W. Thorp each year from 1998 through 2008 (Thorp 1999, 2001, 2004, 2005b, c, 2008). However, the evidence for large-scale range reductions across North America is lacking. Related Stories. (Last accessed 26 Feb. 2009). Thorp, R. W. 2005a. Tel: (855) 232-6639 • Fax: (503) 233-6794, Main Office: 628 NE Broadway, Ste. However, researchers have been aware of the rapid decline of the Franklin's bee Goulson, D. 2003. Sightings decreased from 94 in 1998 to 20 in 1999 to 9 in 2000 to one in 2001. There are over 255 species of bumblebees, according to the Integrated Taxonomic Information System (ITIS), so bumblebees can be many sizes. Notes on the nesting habits of some of the less common New England bumblebees. These include the Morrison Bumblebee, Southern Plains Bumblebee, Franklin’s Bumblebee, Rusty Patched Bumblebee, and the Western Bumblebee. Warren, M. S. 1993. In K. Strickler and J. H. Cane (eds.) Thorp researches the declining population of Franklin’s bumble bee, Bombus franklini (Frison), found only in a narrow range of southern Oregon and northern California. Habitat Alteration: Any habitat alteration which destroys, fragments, degrades, or reduces food supplies, nest sites, or over-wintering sites can harm this species. Between 1998 and 2005, the number of sightings of Bombus franklini declined precipitously from 94 individuals in 1998 to 20 in 1999, nine in 2000 and one in 2001. Laws and regulations on the import, movement and release of bees in the United States. There are currently no federal regulations that limit the interstate transport of bumble bees even outside their native range (Flanders et al. Goka, K., K. Okabe, S. Niwa, and M. Yoneda. 1995. http://www.fs.fed.us/r6/sfpnw/issssp/species-index/fauna-invertebrates.shtml (Last accessed 27 April 2009). The Franklin's bee was not put on the endangered species list until very recently, in 2010. He saw the population of Franklin’s and another related bee, the western bumblebee, dropping in the early 2000s. Original profile prepared by Dr. Robbin Thorp, University of California- Davis. When a female locates a male patrol-area, she remains still until a male finds her, and mating usually takes place on vegetation or the ground. [1] 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. 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). 2008. Its entire distribution, including historic populations and recent range extensions (Thorp 1999, 2001, 2004) can be covered by an oval of about 190 miles north to south and 70 miles east to west between 122o to 124o west longitude and 40o 58o to 43o 30o north latitude. Oregon Department of Fish and Wildlife (ODFW). [4], Franklin's bumblebee is distinguished from other bumblebees by a solid black abdomen, with yellow anteriorly on the thorax in a U-shaped design. Durrer, S. and P. Schmid-Hempel. pp. Personal communication with Robbin Thorp. Franklin bumble bee populations in particular, there is not yet reason to believe the species is extinct. Report to US Fish and Wildlife Service, Portland, OR on 2004 season (submitted 29 March 2005). Bumble bees (Hymenoptea: Apidae): commercial use and environmental concerns. Consequently, the population of the species started decreasing significantly. Forest Service/BLM. Environmental change and the distribution of British bumble bees (Bombus Latr.). The primary threat to this species is the spread of disease by bumble bees from outside of its geographic range. Proceedings of the National Academy of Sciences of the United States of America 102 (30): 10742-10746. Sugden, E. A. 2009. 2009. IMAGE: A Common Carder bee, Bombus pascuorum, carding hairs from a dead-nettle. Where does the Franklin's Bumble Bee live? Canadian Entomologist 100: 156-164. The western monarch population has declined about 98 percent since the late 1980s, when the population was estimated at 4.5 million. Williams, P. H. 1998. Fire suppression can lead to extensive changes in vegetation structure, including degradation and loss of grasslands and herbaceous species as the shrub community matures (Panzer 2002, Schultz & Crone 1998). 1997. Plants such as sunflowers and thyme could help save Britain's dwindling bumblebee population, a new study suggests. Franklin’s bumble bee, Bombus franklini (Frison 1921): a species of special concern. Interagency Special Status Sensitive Species Program. Available http://www.natureserve.org/explorer. 67: 79-152. updated at: www.nhm.ac.uk/research-curation/projects/bombus/. Share. Franklin’s bumble bee, Bombus (Bombus) franklini (Frison). “But the season is still young,” he said, hopefully. Two colonies of B. franklini initiated in the laboratory and set out to complete development in the field contained over 60 workers by early September, and probably produced over 100 workers by end of season (Plowright and Stephen 1980). 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