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Developing and establishing bee species as crop pollinators: the example of Osmia spp. (Hymenoptera: Megachilidae) and fruit trees

Published online by Cambridge University Press:  09 March 2007

J. Bosch*
Affiliation:
Biology Department, 5310 Old Main Hill, Utah State University, Logan, UT 84322–5310, USA
W.P. Kemp
Affiliation:
Bee Biology and Systematics Laboratory, USDA-Agricultural Research Service, Logan, UT 84322–5310, USA
*
*Fax: 1-435-797-0196. E-mail: Nomada@biology.usu.edu

Abstract

The development of a bee species as a new crop pollinator starts with the identification of a pollination-limited crop production deficit and the selection of one or more candidate pollinator species. The process continues with a series of studies on the developmental biology, pollinating efficacy, nesting behaviour, preference for different nesting substrates, and population dynamics of the candidate pollinator. Parallel studies investigate the biology of parasites, predators and pathogens. The information gained in these studies is combined with information on the reproductive biology of the crop to design a management system. Complete management systems should provide guidelines on rearing and releasing methods, bee densities required for adequate pollination, nesting materials, and control against parasites, predators and pathogens. Management systems should also provide methods to ensure a reliable pollinator supply. Pilot tests on a commercial scale are then conducted to test and eventually refine the management system. The process culminates with the delivery of a viable system to manage and sustain the new pollinator on a commercial scale. The process is illustrated by the development of three mason bees, Osmia cornifrons (Radoszkowski), O. lignaria Say and O. cornuta (Latreille) as orchard pollinators in Japan, the USA and Europe, respectively.

Type
Review Article
Copyright
Copyright © Cambridge University Press 2002

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References

Anderson, D.L. (2000) Variation in the parasitic bee mite Varroa jacobsoni Oud. Apidologie 31, 281292.CrossRefGoogle Scholar
Anderson, D.L. & Trueman, J.W.H. (2000) Varroa jacobsoni (Acari: Varroidae) is more than one species. Experimental and Applied Acarology 24, 165189.CrossRefGoogle ScholarPubMed
Barthell, J.F., Thorp, R.W. & Wenner, A.M. (1995). Invaders preferring invaders: the case of yellow star-thistle, gum-weed and feral honey bees on Santa Cruz Island. p. 15 in Proceedings of the 80th Annual Ecological Society of America Meeting, Snowbird, Utah, 30 July– 3 August 1995, Ecological Society of America.Google Scholar
Batra, S.W.T. (1978) Aggression, territoriality, mating and nest aggregation of some solitary bees (Hymenoptera: Halictidae, Megachilidae, Colletidae, Anthophoridae). Journal of the Kansas Entomological Society 51, 547559.Google Scholar
Batra, S.W.T. (1979). Osmia cornifrons and Pithitis smaragdula, two Asian bees introduced into the United States for crop pollination. Maryland Agricultural Experiment Station, Special Miscellaneous Publication 1, 307312.Google Scholar
Batra, S.W.T. (1982) The hornfaced bee for efficient pollination of small farm orchards. pp. 116120 in Kerr, H.W. & Knutson, L. (Eds) Research for small farms. USDA Miscellaneous Publication 1422.Google Scholar
Batra, S.W.T. (1998) Hornfaced bees for apple pollination. American Bee Journal 138, 364365.Google Scholar
Bitner, R.M. (2000) Overview of the pollination industry. pp. 15 in Proceedings of the Pioneer Pollination Workshop, 19–20 October 2000 Johnston, Iowa, Pioneer Hi-Bred International.Google Scholar
Bohart, G.E. (1958) Transfer and establishment of the alkali bee. pp. 46 in 16th Alfalfa Improvement Conference Ithaca, New York.Google Scholar
Bohart, G.E. (1962) How to manage the alfalfa leaf-cutting bee (Megachile rotundata Fabr.) for alfalfa pollination. Utah Agricultural Experiment Station, Circular 144.Google Scholar
Bohart, G.E. (1972) Management of wild bees for the pollination of crops. Annual Review of Entomology 17, 287312.CrossRefGoogle Scholar
Bosch, J. (1992) Osmia cornuta Latr. (Hymenoptera: Megachilidae) como polinizador potencial de almendros. PhD thesis, University of Barcelona, Barcelona.Google Scholar
Bosch, J. (1992) Parasitism in wild and managed populations of the almond pollinator Osmia cornuta Latr. (Hymenoptera: Megachilidae). Journal of Apicultural Research 31, 7782.CrossRefGoogle Scholar
Bosch, J. (1994) Improvement of field management of Osmia cornuta (Latreille) (Hymenoptera, Megachilidae). Apidologie 25, 7183.CrossRefGoogle Scholar
Bosch, J. (1994) The nesting behavior of the mason bee Osmia cornuta (Latr) with special reference to its pollinating potential (Hymenoptera, Megachilidae). Apidologie 25, 8493.CrossRefGoogle Scholar
Bosch, J. (1994) Osmia cornuta Latr. (Hym., Megachilidae) as a potential pollinator in almond orchards. Releasing methods and nest hole-length. Journal of Applied Entomology 117, 151157.CrossRefGoogle Scholar
Bosch, J. (1995) Comparison of nesting materials for the orchard pollinator Osmia cornuta (Hymenoptera: Megachilidae). Entomologia Generalis 19, 285289.CrossRefGoogle Scholar
Bosch, J. & Blas, M. (1994) Foraging behaviour and pollinating efficiency of Osmia cornuta and Apis mellifera on almond (Hymenoptera: Megachilidae and Apidae). Applied Entomology and Zoology 29, 19.CrossRefGoogle Scholar
Bosch, J. & Blas, M. (1994) Effect of over-wintering and incubation temperatures on adult emergence in Osmia cornuta Latr (Hymenoptera, Megachilidae). Apidologie 25, 265277.CrossRefGoogle Scholar
Bosch, J. & Kemp, W.P. (1999) Exceptional cherry production in an orchard pollinated with blue orchard bees. Bee World 80, 163173.CrossRefGoogle Scholar
Bosch, J. & Kemp, W.P. (2000) Development and emergence of the orchard pollinator, Osmia lignaria (Hymenoptera: Megachilidae). Environmental Entomology 29, 813.CrossRefGoogle Scholar
Bosch, J. & Kemp, W.P. (2000) Developmental biology and rearing methods for Osmia bees used as crop pollinators. pp. 119126 in Sommeijer, M.J. & Ruijter, A. de (Eds) Insect pollination in greenhouses. Den Haag, CIP-DATA Koninklijke Bibliotheek.Google Scholar
Bosch, J. & Kemp, W.P. (2001) How to manage the blue orchard bee, Osmia lignaria, as an orchard pollinator. Washington, DC, Sustainable Agriculture Network.Google Scholar
Bosch, J., Kemp, W.P. & Peterson, S.S. (2000) Management of populations of the mason bee Osmia lignaria Say (Hymenoptera: Megachilidae) to pollinate almonds: methods to advance bee emergence. Environmental Entomology 29, 874883.CrossRefGoogle Scholar
Boyle-Makowski, R.M.D. & Philogène, B.R.J. (1985) Pollinator activity and abiotic factors in an apple orchard. Canadian Entomologist 117, 15091521.CrossRefGoogle Scholar
Bubán, T. (1996) The effect of temperature and environmental pollution on fertilization. pp. 170172 in Nyéki, J. & Soltész, M. (Eds) Floral biology of temperate zone fruit trees and small fruits. Budapest, Akadémiai Kiadó.Google Scholar
Buttery, R.G., Parker, F.D., Teranishi, R., Mon, T.R. & Ling, L.C. (1981) Volatile components of alfalfa leaf-cutter bee cells. Journal of Agricultural and Food Chemistry 29, 955958.CrossRefGoogle Scholar
Butz Huryn, V.M. (1997) Ecological impacts of introduced honey bees. Quarterly Review of Biology 72, 275297.Google Scholar
Butz Huryn, V.M. & Moller, H. (1995) An assessment of the contribution of honey bees (Apis mellifera) to weed reproduction in New Zealand protected natural areas. New Zealand Journal of Ecology 19, 111122.Google Scholar
Calzadilla, J., Escolano, M.A., Vicens, N. & Bosch, J. (1997) Polinización de almendros en Mallorca con la abeja Osmia cornuta. pp. 105111 in VI Jornadas del almendro y algarrobo. Palma de Mallorca.Google Scholar
Campbell, K. (2000). (() California bee shortage prompts multiple concerns. The Speedy Bee 29, 14.)Google Scholar
Cane, J.H. (1997) Ground-nesting bees: the neglected pollinator resource for agriculture. Acta Horticulturae 437, 309324.CrossRefGoogle Scholar
Cane, J.H. (2001) Exotic non-social bees (Hymenoptera: Apoidea) in North America: ecological implications. in Strickler, K. & Cane, J.H. (Eds) For non-native crops, whence pollinators of the future? Thomas Say Publications in Entomology: Proceedings. Entomological Society of America, Lanham, Maryland, USA (in press).Google Scholar
Chansigaud, J. (1972) Répartition des vols d'abeilles sauvages dans quelques vergers de la région parisienne au cours des années 1969 et 1970. Apidologie 3, 263273.CrossRefGoogle Scholar
Corbet, S.A., Williams, I.H. & Osborne, J.L. (1991) Bees and the pollination of crops and wild flowers in the European Community. Bee World 72, 4759.CrossRefGoogle Scholar
Crane, E. (1991) Apis species of Tropical Asia as pollinators, and some rearing methods for them. Acta Horticulturae 288, 2948.CrossRefGoogle Scholar
Dafni, A. & Shmida, A. (1996) The possible ecological implications of the invasion of Bombus terrestris (L.) (Apidae) at Mt Carmel, Israel. pp. 183200 in Matheson, A., Buchmann, S.L., O'Toole, C., Westrich, P. & Williams, I.H. (Eds) The conservation of bees. London, IBRA and Academic Press.Google Scholar
Davenport, T.L. (1982) Avocado growth and development. Proceedings of Florida State Horticultural Society 95, 9296.Google Scholar
DeGrandi-Hoffman, G., Thorp, R., Loper, G. & Eisikowitch, G. (1992) Identification and distribution of cross-pollinating honey-bees on almonds. Journal of Applied Ecology 29, 238246.CrossRefGoogle Scholar
Dobrynin, N.D. (1998) Alfalfa pollinators in the Central black-soil region of Russia and ecological bases of their protection, management, and utilization. PhD thesis, Russian Academy of Sciences, Moscow, Russia (in Russian).Google Scholar
Eves, J.D., Mayer, D.F. & Johansen, C.A. (1980). (, & () Parasites, predators and nest destroyers of the alfalfa leafcutting bee, Megachile rotundata . Washington State University, Agricultural Experiment Station, Western Regional Extension Publication 32, 15.Google Scholar
Faust, M. (1989) Physiology of temperate zone fruit trees. New York, John Wiley & Sons.Google Scholar
Finley, J., Camazine, S. & Frazier, M. (1996) The epidemic of honey bee colony losses during the 1995 –1996 season. American Bee Journal 136, 805808.Google Scholar
Free, J.B. (1960) The behaviour of honeybees visiting the flowers of fruit trees. Journal of Animal Ecology 29, 385395.CrossRefGoogle Scholar
Free, J.B. (1962) The effect of distance from pollinizer varieties on the fruit set on trees in plum and apple orchards. Journal of Horticultural Science 37, 262271.CrossRefGoogle Scholar
Free, J.B. (1993) Insect pollination of crops. 2nd edn. London, Academic Press.Google Scholar
Gerber, H.S. & Klostermeyer, E.C. (1972) Factors affecting sex ratio and nesting behavior of the alfalfa leafcutter bee. Washington Agricultural Experiment Station Technical Bulletin 73, 111.Google Scholar
Goka, K., Okabe, K., Niwa, S. & Yoneda, M. (2000) Parasitic mite infestation in introduced colonies of European bumblebees, Bombus terrestris . Japanese Journal of Applied Entomology and Zoology 44, 4750.(in Japanese).CrossRefGoogle Scholar
Heard, T.A. (1999) The role of stingless bees in crop pollination. Annual Review of Entomology 44, 183206.CrossRefGoogle ScholarPubMed
Hefetz, A., Batra, S.W.T. & Blum, M.S. (1979) Linalool, neral and geranial in the mandibular glands of Colletes bees – an aggregation pheromone. Experientia 35, 319320.CrossRefGoogle Scholar
Hingston, A.B. & McQuillan, P.B. (1999) Displacement of Tasmanian native megachilid bees by the recently introduced bumblebee Bombus terrestris (Linnaeus, 1758) (Hymenoptera: Apidae). Australian Journal of Zoology 47, 5965.Google Scholar
Hobbs, G.A. (1967) Domestication of alfalfa leaf-cutter bees. Canada Department of Agriculture Publication 1313.CrossRefGoogle Scholar
Hood, W.M. (2000) Overview of the small hive beetle, Aethina tumida, in North America. Bee World 81, 129137.CrossRefGoogle Scholar
Inouye, D.W. (1980) The terminology of floral larceny. Ecology 61, 12511253.CrossRefGoogle Scholar
Jacob-Remacle, A. (1989) Comportément de butinage de l'abeille domestique et des abeilles sauvages dans des vergers de pommiers en Belgique. Apidologie 20, 271285.CrossRefGoogle Scholar
Johansen, C.A., Mayer, D.F., Stanford, A. & Kious, C. (1982) Alkali bees: their biology and management for alfalfa seed production in the Pacific Northwest. Pacific Northwest Cooperative Extension Bulletin 155.Google Scholar
Kearns, C.A. & Inouye, D.W. (1993) Techniques for pollination biologists. Niwot, University Press of Colorado.Google Scholar
Kearns, C.A., Inouye, D.W. & Wasser, N.M. (1998) Endangered mutualisms: the conservation of plant-pollinator interactions. Annual Review of Ecology and Systematics 29, 83112.CrossRefGoogle Scholar
Kemp, W.P. & Bosch, J. (2001) Postcocooning temperatures and diapause in the alfalfa pollinator Megachile rotundata (Hymenoptera: Megachilidae). Annals of the Entomological Society of America 94, 244250.CrossRefGoogle Scholar
Kendall, D.A. (1973) The viability and compatibility of pollen on insects visiting apple blossom. Journal of Applied Ecology 10, 847853.CrossRefGoogle Scholar
Kitamura, T. & Maeta, Y. (1969) Studies on the pollination of apple by Osmia (III). Preliminary report on the homing ability of Osmia cornifrons (Radoszkowsky) and Osmia pedicornis Cockerell. Kontyu 37, 8390.Google Scholar
Klostermeyer, E.C., Mech, S. & Rasmussen, W.B. (1973) Sex and weight of Megachile rotundata (Hymenoptera: Megachilidae) progeny associated with provision weights. Journal of the Kansas Entomological Society 46, 536548.Google Scholar
Kraus, B. & Page, R.E. (1995) Population growth of Varroa jacobsoni Oud. in Mediterranean climates of California. Apidologie 26, 149157.CrossRefGoogle Scholar
Krombein, K.V. (1967) Trap-nesting wasps and bees: life histories, nests and associates. Washington, DC, Smithsonian Press.Google Scholar
Krunic, M., Brajkovic, M.M. & Mihajlovic, L.S. (1991) Management and utilization of Osmia cornuta Latr. for orchard pollination in Yugoslavia. Acta Horticulturae 288, 190193.CrossRefGoogle Scholar
Kuhn, E.D. & Ambrose, J.T. (1984) Pollination of ‘Delicious’ apple by megachilid bees of the genus Osmia (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 57, 169180.Google Scholar
Løken, A. (1958) Pollination studies in apple orchards of Western Norway. pp. 961965 in Proceedings, 10th International Congress of Entomology. Montreal.Google Scholar
Maeta, Y. (1978) Comparative studies on the biology of the bees of the genus Osmia in Japan, with special reference to their management for pollination of crops (Hymenoptera, Megachilidae). Bulletin of the Tohoku National Agricultural Experiment Station 57, 1221.(in Japanese).Google Scholar
Maeta, Y. (1990) Utilization of wild bees. Farming Japan 24, 1319.Google Scholar
Maeta, Y. & Kitamura, T. (1974) How to manage the Mame-ko bee (Osmia cornifrons Radoszkowski) for pollination of fruit crops. Naganoshi, Ask Co Ltd (in Japanese).Google Scholar
Maeta, Y. & Kitamura, T. (1981) Pollinating efficiency by Osmia cornifrons (Radoszkowski) in relation to required number of nesting bees for economic fruit production. Honeybee Science 2, 6572.(in Japanese).Google Scholar
Maeta, Y. & Yamane, S. (1974) Host records and bionomics of Melittobia japonica Masi (Hymenoptera, Eulophidae). Bulletin of the Tohoku National Agricultural Experiment Station 47, 115131.Google Scholar
Márquez, J., Bosch, J. & Vicens, N. (1994) Pollens collected by wild and managed populations of the potential pollinator Osmia cornuta Latreille. Journal of Applied Entomology 117, 353359.CrossRefGoogle Scholar
Mcgregor, S.E. (1976) Insect pollination of cultivated crop plants. Washington, DC, US Department of Agriculture.Google Scholar
Michener, C.D. (2000) The bees of the world. Baltimore, The Johns Hopkins University Press.Google Scholar
Monzón, V.H. (1998) Biología de Osmia cornuta Latr. (Hymenoptera: Megachilidae) y su utilización como polinizador de peral (Pyrus communis). PhD thesis, University of Barcelona, Barcelona.Google Scholar
Nyéki, J. (1996) Fertilization conditions. pp. 185256 in Nyéki, J. & Soltész, M. (Eds) Floral biology of temperate zone fruit trees and small fruits. Budapest, Akadémiai Kiadó.Google Scholar
Nyéki, J. & Soltész, M. (1996) Floral biology of temperate zone fruit trees and small fruits. Budapest, Akadémiai Kiadó.Google Scholar
Parker, F.D. & Potter, H.W. (1974) Methods of transferring and establishing the alkali bee. Environmental Entomology 3, 739743.CrossRefGoogle Scholar
Parker, F.D. & Tepedino, V.J. (1982) Maternal influence on diapause in the alfalfa leafcutting bee (Hymenoptera: Megachilidae). Annals of the Entomological Society of America 75, 407410.CrossRefGoogle Scholar
Parker, F.D., Teranishi, R. & Olson, A.C. (1983) Influence of attractants on nest establishment by the alfalfa leafcutting bee (Hymenoptera: Megachilidae) in styrofoam and rolled paper. Journal of the Kansas Entomological Society 56, 477482.Google Scholar
Parker, F.D., Batra, S.W.T. & Tepedino, V.J. (1987) New pollinators for our crops. Agricultural Zoology Review 2, 279304.Google Scholar
Peterson, S.S., Baird, C.R. & Bitner, R.M. (1992) Current status of the alfalfa leafcutting bee, Megachile rotundata, as a pollinator of alfalfa seed. Bee Science 2, 135142.Google Scholar
Ptacek, V. (1989) Nesting strips for Rhophitoides canus Ev. (Hymenoptera, Apoidea) in lucerne seed production. Sbornik Vedeckych Praci 11, 261273.(in Czech).Google Scholar
Ptacek, V. & Rotrekl, J. (1990) Pollination and plant protection in seed production of lucerne (Medicago sativa L.). pp. 125130 in Proceedings of the fourth International Symposium on the harmonization of methods for testing the toxicity of pesticides to bees. Rez u Prahy.Google Scholar
Rank, G.H. & Rank, F.P. (1989) Diapause intensity in a French univoltine and a Saskatchewan commercial strain of Megachile rotundata (Fab.). Canadian Entomologist 121, 141148.CrossRefGoogle Scholar
Raw, A. (1992) Solitary bees (Hymenoptera: Megachilidae), restricted to identical resources for nesting, recognized their own nests: an example of genetically determined personal scents?. The Entomologist 111, 7987.Google Scholar
Richards, K.W. (1984) Alfalfa leafcutter bee management in Western Canada. Ottawa, Agriculture Canada.Google Scholar
Roberts, R.H. (1945) Blossom structure and setting of ‘Delicious’ and other apple varieties. Proceedings of the American Society for Horticultural Science 46, 8790.Google Scholar
Robinson, W.S. (1979) Effect of apple cultivar on foraging behaviour and pollen transfer by honey bees. Journal of the American Society for Horticultural Science 104, 596598.Google Scholar
Rosner, B. (1994) Chemische Kommunikation bei der Mauerbiene Osmia rufa (Megachilidae). MS thesis, University of Vienna.Google Scholar
Roubik, D.W. & Wolda, H. (2001) Do competing honey bees matter? Dynamics and abundance of native bees before and after honey bee invasion. Population Ecology 43, 5362.CrossRefGoogle Scholar
Scott-Dupree, C.D. & Winston, M.L. (1987) Wild bee pollinator diversity and abundance in orchard and uncultivated habitats in Okanagan Valley, British Columbia. Canadian Entomologist 119, 735745.CrossRefGoogle Scholar
Sekita, N., Watanabe, T. & Yamada, M. (1996) Population ecology of Osmia cornifrons (Hymenoptera, Megachilidae) in natural habitats. Bulletin of the Aomori Apple Experiment Station 29, 1736.Google Scholar
Soltész, M. (1996) Requirements for successful fruit set in orchards. pp. 257286 in Nyéki, J. & Soltész, M. (Eds) Floral biology of temperate zone fruit trees and small fruits. Budapest, Akadémiai Kiadó.Google Scholar
Stanghellini, M.S., Ambrose, J.T. & Hopkins, D.I. (2000) Bumblebee colonies as potential alternative hosts for the small hive beetle (Aethina tumida Murray). American Bee Journal 140, 7175.Google Scholar
Steinmann, E. (1976) Über die Nahorientierung solitärer Hymenopteren: Individuelle markierung der Nesteingänge. Bulletin de la Société Entomologique Suisse 49, 253258.Google Scholar
Stephen, W.P. (1959) Maintaining alkali bees for alfalfa seed production. Agricultural Experiment Station, Oregon State University, Station Bulletin 568.Google Scholar
Stephen, W.P. (1962) Propagation of the leaf-cutter bee for alfalfa seed production. Agricultural Experiment Station, Oregon State University, Station Bulletin 586.Google Scholar
Stephen, W.P. & Osgood, C.E. (1965) Influence of tunnel size and nesting medium on sex ratios in a leaf-cutter bee, Megachile rotundata. Journal of Economic Entomology 58, 965968.CrossRefGoogle Scholar
Stephenson, A.G. (1981) Flower and fruit abortion: proximate causes and ultimate functions. Annual Review of Ecology and Systematics 12, 253279.CrossRefGoogle Scholar
Sugiura, N. & Maeta, Y. (1989) Parental investment and offspring sex ratio in a solitary mason bee, Osmia cornifrons (Radoszkowski) (Hymenoptera, Megachilidae). Japanese Journal of Entomology 57, 861875.Google Scholar
Tepedino, V.J. & Parker, F.D. (1986) Effect of rearing temperature on mortality, second-generation emergence, and size of adult in Megachile rotundata (Hymenoptera: Megachilidae). Journal of Economic Entomology 79, 974977.CrossRefGoogle Scholar
Tepedino, V.J. & Torchio, P.F. (1982) Phenotypic variability in the nesting success among Osmia lignaria propinqua females in a glasshouse environment (Hymenoptera: Megachilidae). Ecological Entomology 7, 453462.CrossRefGoogle Scholar
Tepedino, V.J. & Torchio, P.F. (1982) Temporal variability in the sex ratio of a non-social bee, Osmia lignaria propinqua Cresson: extrinsic determination or the tracking of an optimum?. Oikos 38, 177182.CrossRefGoogle Scholar
Tepedino, V.J. & Torchio, P.F. (1989) The influence of nest-hole selection on sex ratio and progeny size in Osmia lignaria propinqua (Hymenoptera: Megachilidae). Annals of the Entomological Society of America 82, 355360.CrossRefGoogle Scholar
Thomson, J.D. & Plowright, R.C. (1980) Pollen carryover, nectar rewards, and pollinator behavior with special reference to Diervilla lonicera . Oecologia 46, 6874.CrossRefGoogle ScholarPubMed
Thomson, J.D. & Thomson, B.A. (1992) Pollen-presentation and viability schedules in animal-pollinated plants: consequences for reproductive success. pp. 124 in Wyatt, R. (Ed.) Ecology and evolution of plant reproduction. New York, Chapman and Hall.Google Scholar
Thorp, R.W. (1979). Honey bee foraging behavior in California almond orchards. Maryland Agricultural Experiment Station, Special Miscellaneous Publication 1, 285293.Google Scholar
Thorp, R.W. (2001) Bumble bees: commercial use and environmental concerns. in Strickler, K. & Cane, J.H. (Eds) For non-native crops, whence pollinators of the future? Thomas Say Publications in Entomology, Proceedings, Entomological Society of America, Lanham, Maryland (in press).Google Scholar
Torchio, P.F. (1966) A survey of alfalfa pollinators and pollination in the San Joaquin Valley of California with emphasis on the establishment of the alkali bee. MS thesis, Oregon State University, Corvallis.Google Scholar
Torchio, P.F. (1972) Sapyga pumila Cresson, a parasite of Megachile rotundata (F.) (Hymenoptera: Sapygidae, Megachilidae). I: Biology and description of immature stages. Melanderia 10, 122.Google Scholar
Torchio, P.F. (1972) Sapyga pumila Cresson, a parasite of Megachile rotundata (F.) (Hymenoptera: Sapygidae, Megachilidae). II: Methods for control. Melanderia 10, 2330.Google Scholar
Torchio, P.F. (1976) Use of Osmia lignaria Say (Hymenoptera: Apoidea: Megachilidae) as a pollinator in an apple and prune orchard. Journal of the Kansas Entomological Society 49, 475482.Google Scholar
Torchio, P.F. (1979). Use of Osmia lignaria Say as a pollinator of caged almond in California. Maryland Agricultural Experiment Station, Special Miscellaneous Publication 1, 285293.)Google Scholar
Torchio, P.F. (1981) Field experiments with Osmia lignaria propinqua Cresson as a pollinator in almond orchards: II, 1976 studies (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 54, 824836.Google Scholar
Torchio, P.F. (1982) Field experiments with the pollinator species, Osmia lignaria propinqua Cresson in apple orchards: I, 1975 studies (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 55, 136144.Google Scholar
Torchio, P.F. (1982) Field experiments with the pollinator species, Osmia lignaria propinqua Cresson in apple orchards: II, 1976 studies (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 55, 759778.Google Scholar
Torchio, P.F. (1984) Field experiments with the pollinator species, Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae) in apple orchards: III, 1977 studies. Journal of the Kansas Entomological Society 57, 517521.Google Scholar
Torchio, P.F. (1984) Field experiments with the pollinator species, Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae) in apple orchards: IV, 1978 studies. Journal of the Kansas Entomological Society 57, 689694.Google Scholar
Torchio, P.F. (1985) Field experiments with the pollinator species, Osmia lignaria propinqua Cresson in apple orchards: V, 1979 – 1980, methods of introducing bees, nesting success, seed counts, fruit yields (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 58, 448464.Google Scholar
Torchio, P.F. (1987) Use of non-honey bee species as pollinators of crops. Proceedings of the Entomological Society of Ontario 118, 111124.Google Scholar
Torchio, P.F. (1989) In-nest biologies and immature development of three Osmia species (Hymenoptera: Megachilidae). Annals of the Entomological Society of America 82, 599615.CrossRefGoogle Scholar
Torchio, P.F. (1989) Biology, immature development, and adaptive behavior of Stelis montana, a cleptoparasite of Osmia spp. (Hymenoptera: Megachilidae). Annals of the Entomological Society of America 82, 616632.CrossRefGoogle Scholar
Torchio, P.F. (1990) Diversification of pollination strategies for U.S. crops. Environmental Entomology 19, 16491656.CrossRefGoogle Scholar
Torchio, P.F. (1991) Bees as crop pollinators and the role of solitary species in changing environments. Acta Horticulturae 288, 4961.CrossRefGoogle Scholar
Torchio, P.F. (1991) Use of Osmia lignaria propinqua (Hymenoptera: Megachilidae) as a mobile pollinator of orchard crops. Environmental Entomology 20, 590596.CrossRefGoogle Scholar
Torchio, P.F. (1992) Effects of dosage and temperature on pathogenic expressions of chalkbrood syndrome caused by Ascosphaera torchioi within larvae of Osmia lignaria propinqua (Hymenoptera: Megachilidae). Environmental Entomology 21, 10861091.CrossRefGoogle Scholar
Torchio, P.F. & Asensio, E. (1985) The introduction of the European bee, Osmia cornuta Latr., into the U.S. as a potential pollinator of orchard crops, and a comparison of its manageability with Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae). Journal of the Kansas Entomological Society 58, 4252.Google Scholar
Torchio, P.F. & Bosch, J. (1992) Biology of Tricrania stansburyi, a meloid beetle cleptoparasite of the bee Osmia lignaria propinqua (Hymenoptera: Megachilidae). Annals of the Entomological Society of America 85, 713721.CrossRefGoogle Scholar
Torchio, P.F., Asensio, E. & Thorp, R.W. (1987) Introduction of the European bee, Osmia cornuta, into California almond orchards (Hymenoptera: Megachilidae). Environmental Entomology 16, 664667.CrossRefGoogle Scholar
Traynor, J. (1998) Will bee supply meet almond pollination needs?. The Speedy Bee 28, 79.Google Scholar
Traynor, J. (2000) March blooming almonds. Pacific Nut Producer March 2000, 1819.Google Scholar
van den Eijnde, J., de Ruijter, A. & van der, Steen J. (1991) Method for rearing Bombus terrestris continuously and the production of bumblebee colonies for pollination purposes. Acta Horticulturae 288, 154158.CrossRefGoogle Scholar
van Heemert, C., de Ruijter, A., van den Eijnde, J. & van der Steen, J. (1990) Year-round production of bumblebee colonies for crop pollination. Bee World 71, 5456.CrossRefGoogle Scholar
Vicens, N. (1997) Potencial pollinitzador en pomeres i inversió parental en l'abella solitària Osmia cornuta (Latreille) (Hymenoptera: Megachilidae). PhD thesis, University of Barcelona.Google Scholar
Vicens, N. & Bosch, J. (2000) Pollinating efficacy of Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae, Apidae) on ‘Red Delicious’ apple. Environmental Entomology 29, 235240.CrossRefGoogle Scholar
Vicens, N. & Bosch, J. (2000) Weather-dependent pollinator activity in an apple orchard, with special reference to Osmia cornuta and Apis mellifera (Hymenoptera: Megachilidae and Apidae). Environmental Entomology 29, 413420.CrossRefGoogle Scholar
Vicens, N. & Bosch, J. (2000) Nest site orientation and relocation of populations of the orchard pollinator Osmia cornuta (Hymenoptera: Megachilidae). Environmental Entomology 29, 6975.CrossRefGoogle Scholar
Vicens, N., Bosch, J. & Blas, M. (1993) Análisis de los nidos de algunas Osmia (Hymenoptera: Megachilidae) nidificantes en cavidades preestablecidas. Orsis 8, 4152.Google Scholar
Warner, M. (1999) Cherry guesswork: new products help hedge the gamble with nature. Tree Fruit January/February 1999, 47.Google Scholar
Westwood, M.N. (1993) Temperate-zone pomology, physiology and culture. Portland, Timber Press.Google Scholar
Williams, J.T. (1991) Seasonal light requirements in a fruit orchard. Fruit Notes 56, 2021.Google Scholar
Williams, R.R. (1969) Factors affecting pollination in fruit trees. pp. 193207 in Luckvill, L.C. & Cutting, L.V. (Eds) Physiology of tree crops. London, Academic Press.Google Scholar
Xu, H.-L., Yang, L.-I. & Kwon, Y.J. (1995) Current status on the utilization of Osmia bees as pollinators of fruit trees in China (Hymenoptera: Megachilidae). Korean Journal of Apiculture 10, 111116.Google Scholar
Yamada, M. (1990) Control of Chaetodactylus mite, Chaetodactylus nipponicus Kurosa, an important mortality agent of hornfaced bee, Osmia cornifrons Radoszkowski. Bulletin of the Aomori Apple Experiment Station 26, 3977.(in Japanese).Google Scholar
Yamada, M., Oyama, N., Sekita, N., Shirasaki, S. & Tsugawa, C. (1971) The ecology of the megachilid bee Osmia cornifrons and its utilization for apple pollination. Bulletin of the Aomori Apple Experiment Station 15, 180.(in Japanese).Google Scholar
Yoshida, A. & Maeta, Y. (1988) Utilization of Osmia cornifrons (Radoszkowski) as a pollinator of apples in south-western Japan. Honeybee Science 9, 16.(in Japanese).Google Scholar
Youssef, N.N., McManus, W.R. & Torchio, P.F. (1985) Cross-infectivity potential of Ascosphaera spp. (Ascomycetes: Ascosphaera) on the bee, Osmia lignaria propinqua Cresson. Journal of Economic Entomology 78, 227231.CrossRefGoogle Scholar
Zimmerman, M. & Pyke, G.H. (1988) Reproduction in Polemonium: assessing the factors limiting seed set. American Naturalist 131, 723738.CrossRefGoogle Scholar