franklin's bumblebee population
No B. franklini were found during the BLM search effort in 2006 (Code & Haney 2006). The species has a NatureServe Global Status rank of G1, an Oregon state status rank of S1 and a California state status rank of SNR (NatureServe 2009). 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. In: K. Strickler and J. H. Cane (eds.). This thread is archived. 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. Pollinators of food crops and wild plants are in near catastrophic decline. 2009. These and other pesticides may be translocated through plants into the nectar or pollen. Oregon State College, Agricultural Experiment Station, Technical Bulletin 40, 163pp. It’s unclear whether the bees might recover. The federal government has proposed endangered species status for the Franklin’s bumblebee, last seen 13 years ago on Mount Ashland. 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 federal government has proposed endangered species status for the Franklin’s bumblebee, last seen 13 years ago on Mount Ashland. Worldwide, bees are facing significant challenges due to habitat loss, pesticide use and climate change. 2009. Pollinator Protection: a Bee and Pesticide Handbook. Franklin’s Bumblebee may be Added to Endangered Species List. (Hymenoptera: Apidae) in southern Alberta.  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. Status of Pollinators in North America. Oct 17 2018. Commercially reared bumble bees frequently harbor pathogens and their escape from greenhouses can lead to infections in native species (Colla et al. Evidence for the decline of Eastern North American Bumble Bees, with special focus on Bombus affinis Cresson. 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. 1983; Laverty and Harder 1988, Macfarlane et al. There are over 255 species of bumblebees, according to the Integrated Taxonomic Information System (ITIS), so bumblebees can be many sizes. No individuals were found in 2007 or 2008. The U.S. FWS's Threatened & Endangered Species System track information about listed species in the United States 2008. Thomson, D. 2004. Help support science-based conservation: become a member or make a donation today!  It is known only from a 190-by-70-mile (310 by 110 km) area in southern Oregon and northern California, between the Coast and Sierra-Cascade mountain ranges. 200, Portland, OR 97232 USA • Mailing Address for Donations: P.O. 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. 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. Prezi Video + Unsplash: Access over two million images to tell your story through video “I already knew (the Franklin’s) had declined by the time I saw that (last) one. 1983); a few individuals have also been encountered in October (Southern Oregon University Bee Collection records). During its flight season, from mid-May through September, Franklin’s bumble bee frequents California poppies, lupines, vetch, wild roses, blackberries, clover, sweet pea, horsemint and mountain penny royal. The 2010 petition by the Xerces Society and Dr. Robbin Thorp, Professor Emeritus at University of California–Davis. 1988. Population structure and inbreeding in a rare and declining bumblebee, Bombus muscorum (Hymenoptera: Apidae). However, the evidence for large-scale range reductions across North America is lacking. Ecology and Conservation of the Fender’s Blue Butterfly. It is known from Douglas, Jackson, and Josephine counties in Oregon and Siskiyou and Trinity counties in California. Thorp, R. W. 2004. Tolerance of pollination networks to species extinctions. It was he who sounded the alarm. Bulletin of the California Insect Survey 23: viii. Posted by. … (Last accessed 26 Feb. 2009). 1983; Macfarlane et al. May 28, 2013 - This Pin was discovered by Ahafer. Bumblebees Included In The Catalog Of Endangered Species - … Thorp et al. Conduct research aimed at increasing understanding of the pathology and control of Nosema bombi [Microsporidia] and other potential disease organisms (such as Locustacrus buchneri [Acarina] and Crithidia bombi [Protozoa]). Version 7.1. Davis, A. R. 2003. 2006. Thorp, who died at age 85 on June 7 at his home in Davis, had monitored the population closely since 1998, but last saw the bumble bee in August 2006. Biodiversity and Conservation 17: 1379-1391. What makes the Franklin’s bumblebee special is that they can only be found within the KS region. Therefore, we request comments or information from other concerned governmental agencies, Native American tribes, the scientific community, industry, or any other interested parties concerning this proposed rule. 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. Frankie, G. W., R. W. Thorp, M. Schindler, J. Hernandez, B. Ertter, and M. Rizzardi. Franklin’s Bumble Bee has the most limited geographic distribution of any bumble bee in North America and possibly the world (Williams 1998). Stephen, W. P. 1957. Original profile prepared by Dr. Robbin Thorp, University of California- Davis. Additional surveys in 2006 were conducted by the BLM; 16 sites with optimal habitat for B. franklini were each surveyed twice (Code & Haney 2006). Biological Conservation 139: 150-158. You can easily recognize them, because they are the only bumble bees flying out there for the moment. 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 cl… 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. 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. 1988. Ecological patterns of bees and their host ornamental flowers in two northern California cities. Sightings decreased from 94 in 1998 to 20 in 1999 to 9 in 2000 to one in 2001. Personal communication with Robbin Thorp. Thorp, R. W. 2005a. Lists a Bumble Bee Species as Endangered for First Time. Towards the end of the colony life cycle, fertile males and new queens are produced and leave the colony to find mates. Read More. Behaviour 107: 186-207. For example, Kevan (1999) found that herbicide applications have reduced the reproductive success of blueberry pollinators by limiting alternative food sources that can sustain the insects when the blueberries are not in bloom. An estimate of bumble bee population and distribution shows that half of the species studied have seen a more than 50 percent decline. Great Basin Naturalist 45: 299-312. Print E-Mail. 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. 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. 2000. Bombus franklini is a primitively eusocial bumble bee. 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). 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). Conservation Biology 16 (5): 1296-1307. Mated queens overwinter in the soil and emerge from hibernation in early spring when they feed on spring flowers and search for a suitable location, such as a former rodent burrow in the soil, to begin their colonies. Homeowners, community members, school gardeners, farmers—everyone can help 2001. In the early stages of colony development, the queen is responsible for all food collection and care of the larvae. BURNS: It's not just the Franklin's bumblebee population that's crashed. 1994. Plant Systematics and Evolution 238: 169-181. http://www.plosone.org/doi/pone.0002771. NatureServe, Arlington, Virginia. 9 years ago. A Tree Bumblebee (Bombus hypnorum) Nest. NatureServe. Additional records with unknown dates and or localities are also available, including the 1917 type specimen whose locality (Nogales, AZ) has been determined to be erroneous. Male bumble bees patrol selected territories, producing a queen-attracting scent which they deposit in suitable places and replace if it rains. 2003. Williams, P. H. 1986.  Males of this species are similar except their malar spaces are long and wide, the hair on males' faces is yellow, and tergum 6 has some pale hairs laterally. 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). Ashland, where the last B. franklini were found in 2003. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Subgenus Bombus. Pollinators as bioindicators of the state of the environment: species, activity and diversity. Bombus franklini is currently considered to be a Species of Concern by the U.S. Thomas Say Publications in Entomology: Proceedings. Bumble bees are generalist foragers, gathering pollen and nectar from a wide variety of flowering plants. Bumble bees (Hymenoptea: Apidae): commercial use and environmental concerns. http://www.iucnredlist.org/details/135295. 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. Quarterly Review of Biology. 2008). Laverty, T. and L. D. Harder. Technical keys, including color pattern illustrations of B. franklini and species that it might be confused with, are presented in Stephen (1957) and Thorp et al. Franklin’s bumble bee ... POPULATION TRENDS, ABUNDANCE, RANGE, AND DISTRIBUTION Current Conservation Status The conservation status and extinction risk of the petitioned species has been evaluated by the International Union for the Conservation of Nature (IUCN) Bumblebee Specialist Group, a Environmental change and the distribution of British bumble bees (Bombus Latr.). Fire to restore butterfly habitat? Tweet. Biogeographic Data Branch: California Natural Diversity Database: Special Animals (901 taxa) February 2009. http://www.dfg.ca.gov/biogeodata/cnddb/pdfs/spanimals.pdf (Last accessed April 2009). 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. They should still be treated with respect when they are discovered, though. A review of butterfly conservation in central southern Britain: II. (1983). Why your go-to-market strategy should be industry focused Although the number of populations that existed prior to 1998 is unknown, there are several historical records for this species, both published and in museums, including two in 1925 (Gold Hill and Roseburg, OR), one in 1930 (Roseburg, OR), two in 1950 (Gold Hill and Medford, OR), two in 1958 (Ashland, OR), two in 1968 (Mt. 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). your own Pins on Pinterest 1996; Butz Huryn 1997). 2006; Ellis et al. For Nonnative Crops, Whence Pollinators of the Future? Goka, K., K. Okabe, S. Niwa, and M. Yoneda. Biological Conservation 64: 37-49. Sixteen North American bumble bees patrol selected territories, producing a queen-attracting which. Both pollen and nectar from vetch ( Vicia ) and also rob from... 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